./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/xor4.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/xor4.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 90b7e6947bda838aad0c5e01877b9a712c46c1a2dc1a2af9f1fb1c6266593b6a --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:39:41,642 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:39:41,716 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:39:41,722 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:39:41,722 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:39:41,758 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:39:41,759 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:39:41,759 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:39:41,760 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:39:41,760 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:39:41,760 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:39:41,761 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:39:41,761 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:39:41,765 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:39:41,765 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:39:41,765 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:39:41,766 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:39:41,766 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:39:41,768 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:39:41,768 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:39:41,769 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:39:41,769 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:39:41,769 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:39:41,769 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:39:41,770 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:39:41,770 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:39:41,770 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:39:41,770 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:39:41,770 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:39:41,771 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:39:41,771 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:39:41,771 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:39:41,771 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:39:41,771 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:39:41,772 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:39:41,772 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:39:41,772 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:39:41,773 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:39:41,773 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:39:41,774 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:39:41,774 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:39:41,774 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:39:41,774 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 90b7e6947bda838aad0c5e01877b9a712c46c1a2dc1a2af9f1fb1c6266593b6a [2024-11-16 02:39:42,026 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:39:42,052 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:39:42,054 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:39:42,055 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:39:42,056 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:39:42,057 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/xor4.i [2024-11-16 02:39:43,500 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:39:43,682 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:39:43,684 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/xor4.i [2024-11-16 02:39:43,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6417ff20/ab6a56427feb4adcb5e793f2acff9e04/FLAG0227739cf [2024-11-16 02:39:43,711 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f6417ff20/ab6a56427feb4adcb5e793f2acff9e04 [2024-11-16 02:39:43,716 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:39:43,717 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:39:43,720 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:39:43,720 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:39:43,726 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:39:43,727 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:39:43" (1/1) ... [2024-11-16 02:39:43,728 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d383f07 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:43, skipping insertion in model container [2024-11-16 02:39:43,728 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:39:43" (1/1) ... [2024-11-16 02:39:43,751 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:39:43,948 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/xor4.i[1303,1316] [2024-11-16 02:39:43,952 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:39:43,959 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:39:43,980 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/xor4.i[1303,1316] [2024-11-16 02:39:43,981 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:39:43,997 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:39:44,000 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44 WrapperNode [2024-11-16 02:39:44,000 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:39:44,001 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:39:44,002 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:39:44,002 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:39:44,007 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,014 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,030 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2024-11-16 02:39:44,030 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:39:44,031 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:39:44,031 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:39:44,031 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:39:44,041 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,041 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,055 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 7, 11]. 55 percent of accesses are in the largest equivalence class. The 9 initializations are split as follows [2, 7, 0]. The 5 writes are split as follows [0, 0, 5]. [2024-11-16 02:39:44,055 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,056 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,061 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,062 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,063 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,064 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,066 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:39:44,067 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:39:44,067 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:39:44,067 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:39:44,068 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (1/1) ... [2024-11-16 02:39:44,073 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:39:44,084 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:44,100 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 02:39:44,105 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 02:39:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:39:44,151 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:39:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:39:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:39:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:39:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:39:44,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:39:44,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:39:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:39:44,154 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:39:44,154 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:39:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:39:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:39:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2024-11-16 02:39:44,155 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2024-11-16 02:39:44,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:39:44,250 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:39:44,252 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:39:44,376 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 02:39:44,437 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-16 02:39:44,439 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:39:44,465 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:39:44,466 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:39:44,466 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:39:44 BoogieIcfgContainer [2024-11-16 02:39:44,466 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:39:44,470 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:39:44,470 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:39:44,473 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:39:44,474 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:39:43" (1/3) ... [2024-11-16 02:39:44,474 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df4c0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:39:44, skipping insertion in model container [2024-11-16 02:39:44,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:44" (2/3) ... [2024-11-16 02:39:44,475 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1df4c0b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:39:44, skipping insertion in model container [2024-11-16 02:39:44,475 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:39:44" (3/3) ... [2024-11-16 02:39:44,477 INFO L112 eAbstractionObserver]: Analyzing ICFG xor4.i [2024-11-16 02:39:44,494 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:39:44,494 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:39:44,558 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:39:44,565 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;@54ae213d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:39:44,567 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:39:44,570 INFO L276 IsEmpty]: Start isEmpty. Operand has 32 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 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 02:39:44,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 02:39:44,579 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:44,580 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 02:39:44,580 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:44,586 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:44,586 INFO L85 PathProgramCache]: Analyzing trace with hash -1401774428, now seen corresponding path program 1 times [2024-11-16 02:39:44,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:44,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [697056197] [2024-11-16 02:39:44,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:44,595 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:44,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,742 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 02:39:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 02:39:44,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,771 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 02:39:44,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,783 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 02:39:44,783 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:44,784 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [697056197] [2024-11-16 02:39:44,785 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [697056197] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:44,785 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:39:44,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:39:44,786 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [455105770] [2024-11-16 02:39:44,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:44,790 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:39:44,790 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:44,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:39:44,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:39:44,815 INFO L87 Difference]: Start difference. First operand has 32 states, 26 states have (on average 1.4230769230769231) internal successors, (37), 27 states have internal predecessors, (37), 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 02:39:44,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:44,841 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2024-11-16 02:39:44,846 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:39:44,847 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 02:39:44,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:44,857 INFO L225 Difference]: With dead ends: 60 [2024-11-16 02:39:44,857 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:39:44,861 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 02:39:44,867 INFO L432 NwaCegarLoop]: 38 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, 38 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 02:39:44,868 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 1 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 1 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:44,883 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:39:44,900 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 02:39:44,902 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 23 states have (on average 1.2608695652173914) internal successors, (29), 23 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 02:39:44,904 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-16 02:39:44,906 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 29 [2024-11-16 02:39:44,906 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:44,907 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-16 02:39:44,907 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 02:39:44,908 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-16 02:39:44,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:39:44,910 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:44,911 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 02:39:44,911 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:39:44,911 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:44,912 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:44,913 INFO L85 PathProgramCache]: Analyzing trace with hash -298656342, now seen corresponding path program 1 times [2024-11-16 02:39:44,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:44,914 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [886126623] [2024-11-16 02:39:44,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:44,914 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:44,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 02:39:45,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,109 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:39:45,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,139 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 02:39:45,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,171 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 02:39:45,172 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:45,172 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [886126623] [2024-11-16 02:39:45,172 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [886126623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:45,173 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [8554577] [2024-11-16 02:39:45,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:45,173 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:45,174 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:45,176 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 02:39:45,177 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 02:39:45,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,272 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:39:45,279 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:45,310 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 02:39:45,311 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:39:45,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [8554577] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:45,313 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:39:45,313 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 02:39:45,314 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164932324] [2024-11-16 02:39:45,314 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:45,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:39:45,315 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:45,316 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:39:45,317 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:39:45,318 INFO L87 Difference]: Start difference. First operand 28 states and 35 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 02:39:45,337 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:45,337 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2024-11-16 02:39:45,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:39:45,342 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 02:39:45,342 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:45,343 INFO L225 Difference]: With dead ends: 54 [2024-11-16 02:39:45,343 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 02:39:45,343 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 02:39:45,344 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 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 02:39:45,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:45,350 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 02:39:45,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-16 02:39:45,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 25 states have (on average 1.24) internal successors, (31), 25 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 02:39:45,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-16 02:39:45,355 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 34 [2024-11-16 02:39:45,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:45,355 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-16 02:39:45,355 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 02:39:45,356 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-16 02:39:45,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:39:45,357 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:45,357 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 02:39:45,378 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 02:39:45,558 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 02:39:45,558 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:45,559 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:45,559 INFO L85 PathProgramCache]: Analyzing trace with hash -721826583, now seen corresponding path program 1 times [2024-11-16 02:39:45,559 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:45,559 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1343840121] [2024-11-16 02:39:45,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:45,560 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:45,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,681 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:39:45,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,698 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-16 02:39:45,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,710 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 02:39:45,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,734 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 02:39:45,734 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:45,734 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1343840121] [2024-11-16 02:39:45,735 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1343840121] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:45,735 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [946545956] [2024-11-16 02:39:45,735 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:45,735 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:45,735 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:45,738 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 02:39:45,739 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 02:39:45,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,834 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:39:45,836 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:45,847 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 02:39:45,851 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:39:45,851 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [946545956] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:45,852 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:39:45,852 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-11-16 02:39:45,852 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145221129] [2024-11-16 02:39:45,852 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:45,854 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:39:45,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:45,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:39:45,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:39:45,858 INFO L87 Difference]: Start difference. First operand 30 states and 37 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 02:39:45,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:45,878 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2024-11-16 02:39:45,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:39:45,879 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 02:39:45,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:45,881 INFO L225 Difference]: With dead ends: 59 [2024-11-16 02:39:45,881 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 02:39:45,882 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 02:39:45,885 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 8 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 62 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 02:39:45,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 62 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:45,887 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 02:39:45,892 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2024-11-16 02:39:45,893 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 27 states have (on average 1.2222222222222223) internal successors, (33), 27 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 02:39:45,895 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-16 02:39:45,895 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 36 [2024-11-16 02:39:45,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:45,897 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-16 02:39:45,897 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 02:39:45,897 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-16 02:39:45,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 02:39:45,898 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:45,899 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 02:39:45,913 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-16 02:39:46,099 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 02:39:46,100 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:46,100 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:46,100 INFO L85 PathProgramCache]: Analyzing trace with hash 577035755, now seen corresponding path program 1 times [2024-11-16 02:39:46,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:46,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [260269959] [2024-11-16 02:39:46,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:46,101 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:46,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,192 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:39:46,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,200 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:39:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,246 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 02:39:46,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,255 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 02:39:46,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:46,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [260269959] [2024-11-16 02:39:46,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [260269959] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:46,257 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [985682295] [2024-11-16 02:39:46,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:46,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:46,257 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:46,259 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 02:39:46,261 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 02:39:46,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:39:46,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:46,364 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 02:39:46,364 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:39:46,365 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [985682295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:46,365 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:39:46,365 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-16 02:39:46,365 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1965913957] [2024-11-16 02:39:46,365 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:46,366 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:39:46,366 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:46,367 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:39:46,367 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:39:46,367 INFO L87 Difference]: Start difference. First operand 32 states and 39 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 02:39:46,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:46,384 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-16 02:39:46,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:39:46,385 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 02:39:46,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:46,386 INFO L225 Difference]: With dead ends: 53 [2024-11-16 02:39:46,386 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 02:39:46,386 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 02:39:46,387 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 62 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 02:39:46,388 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 62 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:46,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 02:39:46,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 02:39:46,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 29 states have (on average 1.206896551724138) internal successors, (35), 29 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 02:39:46,392 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-16 02:39:46,392 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 48 [2024-11-16 02:39:46,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:46,393 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-16 02:39:46,394 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 02:39:46,394 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-16 02:39:46,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:39:46,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:46,397 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 02:39:46,410 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 02:39:46,597 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 02:39:46,598 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:46,598 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:46,599 INFO L85 PathProgramCache]: Analyzing trace with hash 1627662892, now seen corresponding path program 1 times [2024-11-16 02:39:46,599 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:46,599 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [219103623] [2024-11-16 02:39:46,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:46,599 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,666 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:39:46,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:39:46,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,695 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 02:39:46,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,701 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 02:39:46,701 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:46,701 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [219103623] [2024-11-16 02:39:46,701 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [219103623] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:46,702 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [863016076] [2024-11-16 02:39:46,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:46,702 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:46,702 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:46,704 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 02:39:46,706 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 02:39:46,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,789 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:39:46,790 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:46,828 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 02:39:46,831 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:46,881 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 02:39:46,881 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [863016076] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:46,881 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:46,881 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-16 02:39:46,882 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [125521225] [2024-11-16 02:39:46,882 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:46,882 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 02:39:46,882 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:46,883 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 02:39:46,883 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 02:39:46,884 INFO L87 Difference]: Start difference. First operand 34 states and 41 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 02:39:46,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:46,935 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2024-11-16 02:39:46,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:39:46,936 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 02:39:46,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:46,937 INFO L225 Difference]: With dead ends: 80 [2024-11-16 02:39:46,937 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 02:39:46,937 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 02:39:46,940 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 20 mSDsluCounter, 121 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:46,940 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 152 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:46,941 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 02:39:46,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-16 02:39:46,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 42 states have (on average 1.2142857142857142) internal successors, (51), 42 states have internal predecessors, (51), 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 02:39:46,948 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2024-11-16 02:39:46,949 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 50 [2024-11-16 02:39:46,949 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:46,949 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2024-11-16 02:39:46,949 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 02:39:46,949 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-16 02:39:46,950 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:39:46,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:46,951 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 02:39:46,968 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-16 02:39:47,152 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 02:39:47,152 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:47,153 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:47,153 INFO L85 PathProgramCache]: Analyzing trace with hash -1331421269, now seen corresponding path program 2 times [2024-11-16 02:39:47,153 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:47,153 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [119405439] [2024-11-16 02:39:47,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:47,153 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:47,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,243 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:39:47,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,249 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:39:47,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,253 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 02:39:47,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,259 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 02:39:47,259 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:47,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [119405439] [2024-11-16 02:39:47,259 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [119405439] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:47,260 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1810471963] [2024-11-16 02:39:47,260 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:39:47,260 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:47,260 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:47,262 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 02:39:47,263 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 02:39:47,354 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:39:47,355 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:47,356 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:39:47,358 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:47,406 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 02:39:47,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:47,495 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 02:39:47,495 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1810471963] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:47,495 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:47,496 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-16 02:39:47,496 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271992762] [2024-11-16 02:39:47,497 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:47,497 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:39:47,497 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:47,499 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:39:47,499 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:39:47,500 INFO L87 Difference]: Start difference. First operand 47 states and 57 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 02:39:47,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:47,553 INFO L93 Difference]: Finished difference Result 96 states and 122 transitions. [2024-11-16 02:39:47,553 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:39:47,554 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 02:39:47,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:47,554 INFO L225 Difference]: With dead ends: 96 [2024-11-16 02:39:47,555 INFO L226 Difference]: Without dead ends: 61 [2024-11-16 02:39:47,555 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 02:39:47,556 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 183 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 02:39:47,556 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 183 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:47,556 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-16 02:39:47,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-16 02:39:47,565 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 61 states, 56 states have (on average 1.1607142857142858) internal successors, (65), 56 states have internal predecessors, (65), 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 02:39:47,566 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-16 02:39:47,566 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 68 [2024-11-16 02:39:47,567 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:47,567 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-16 02:39:47,567 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 02:39:47,567 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-16 02:39:47,568 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 02:39:47,568 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:47,569 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 02:39:47,586 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 02:39:47,772 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 02:39:47,773 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:47,773 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:47,773 INFO L85 PathProgramCache]: Analyzing trace with hash -358262490, now seen corresponding path program 3 times [2024-11-16 02:39:47,774 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:47,774 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1434948848] [2024-11-16 02:39:47,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:47,774 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:47,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:39:47,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 02:39:47,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 02:39:47,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,936 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 02:39:47,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1434948848] [2024-11-16 02:39:47,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1434948848] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:47,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [96237750] [2024-11-16 02:39:47,937 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:39:47,937 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:47,938 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:47,939 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 02:39:47,941 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 02:39:48,030 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:39:48,031 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:48,032 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:39:48,034 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:48,061 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 02:39:48,062 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:48,122 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 02:39:48,123 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [96237750] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:48,123 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:48,123 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-16 02:39:48,123 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734831293] [2024-11-16 02:39:48,123 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:48,124 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 02:39:48,124 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:48,125 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 02:39:48,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:39:48,128 INFO L87 Difference]: Start difference. First operand 61 states and 71 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 02:39:48,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:48,179 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2024-11-16 02:39:48,183 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:39:48,183 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 02:39:48,184 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:48,185 INFO L225 Difference]: With dead ends: 124 [2024-11-16 02:39:48,185 INFO L226 Difference]: Without dead ends: 89 [2024-11-16 02:39:48,186 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 02:39:48,186 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 52 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 160 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:48,187 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 160 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:48,187 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-16 02:39:48,193 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-16 02:39:48,194 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 84 states have (on average 1.25) internal successors, (105), 84 states have internal predecessors, (105), 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 02:39:48,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2024-11-16 02:39:48,195 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 82 [2024-11-16 02:39:48,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:48,195 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2024-11-16 02:39:48,196 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 02:39:48,196 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2024-11-16 02:39:48,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 02:39:48,198 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:48,198 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 02:39:48,218 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-16 02:39:48,398 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 02:39:48,399 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:48,399 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:48,399 INFO L85 PathProgramCache]: Analyzing trace with hash 1156015406, now seen corresponding path program 4 times [2024-11-16 02:39:48,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:48,400 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [116174018] [2024-11-16 02:39:48,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:48,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:48,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,689 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:39:48,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 02:39:48,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,720 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 02:39:48,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,735 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 02:39:48,735 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:48,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [116174018] [2024-11-16 02:39:48,736 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [116174018] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:48,736 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1473258601] [2024-11-16 02:39:48,736 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:39:48,736 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:48,736 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:48,738 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 02:39:48,740 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 02:39:48,871 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:39:48,872 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:48,874 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:39:48,881 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:49,011 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 02:39:49,015 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:49,197 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 02:39:49,198 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1473258601] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:49,198 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:49,198 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-16 02:39:49,198 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415159450] [2024-11-16 02:39:49,198 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:49,199 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 02:39:49,199 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:49,200 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 02:39:49,201 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:39:49,201 INFO L87 Difference]: Start difference. First operand 89 states and 111 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 02:39:49,323 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:49,324 INFO L93 Difference]: Finished difference Result 212 states and 291 transitions. [2024-11-16 02:39:49,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 02:39:49,324 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 02:39:49,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:49,326 INFO L225 Difference]: With dead ends: 212 [2024-11-16 02:39:49,326 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 02:39:49,328 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:39:49,329 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 196 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 401 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 92 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:49,329 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 401 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 92 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:39:49,330 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 02:39:49,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-16 02:39:49,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 142 states have (on average 1.3169014084507042) internal successors, (187), 142 states have internal predecessors, (187), 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 02:39:49,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2024-11-16 02:39:49,347 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 130 [2024-11-16 02:39:49,348 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:49,348 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2024-11-16 02:39:49,348 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 02:39:49,348 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2024-11-16 02:39:49,351 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-16 02:39:49,351 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:49,352 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 02:39:49,374 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-16 02:39:49,552 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 02:39:49,553 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:49,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:49,553 INFO L85 PathProgramCache]: Analyzing trace with hash 1831056509, now seen corresponding path program 5 times [2024-11-16 02:39:49,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:49,553 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1581885300] [2024-11-16 02:39:49,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:49,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:49,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:49,902 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 02:39:49,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:49,921 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-16 02:39:49,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:49,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-16 02:39:49,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:49,965 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 02:39:49,966 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1581885300] [2024-11-16 02:39:49,966 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1581885300] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:49,966 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2003678134] [2024-11-16 02:39:49,966 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:39:49,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:49,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:49,968 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 02:39:49,970 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 02:39:50,324 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-16 02:39:50,325 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:50,329 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:39:50,337 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:50,654 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 02:39:50,654 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:51,180 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 02:39:51,181 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2003678134] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:51,181 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:51,181 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2024-11-16 02:39:51,181 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1675772508] [2024-11-16 02:39:51,181 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:51,182 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:39:51,182 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:51,183 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:39:51,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:39:51,184 INFO L87 Difference]: Start difference. First operand 147 states and 193 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 02:39:51,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:51,410 INFO L93 Difference]: Finished difference Result 382 states and 541 transitions. [2024-11-16 02:39:51,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 02:39:51,411 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 02:39:51,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:51,413 INFO L225 Difference]: With dead ends: 382 [2024-11-16 02:39:51,413 INFO L226 Difference]: Without dead ends: 261 [2024-11-16 02:39:51,415 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:39:51,417 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 520 mSDsluCounter, 390 mSDsCounter, 0 mSdLazyCounter, 130 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 520 SdHoareTripleChecker+Valid, 421 SdHoareTripleChecker+Invalid, 132 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 130 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:51,417 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [520 Valid, 421 Invalid, 132 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 130 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:39:51,418 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-16 02:39:51,438 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-16 02:39:51,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 261 states, 256 states have (on average 1.36328125) internal successors, (349), 256 states have internal predecessors, (349), 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 02:39:51,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 355 transitions. [2024-11-16 02:39:51,446 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 355 transitions. Word has length 228 [2024-11-16 02:39:51,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:51,446 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 355 transitions. [2024-11-16 02:39:51,447 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 02:39:51,448 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 355 transitions. [2024-11-16 02:39:51,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-16 02:39:51,455 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:51,455 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 02:39:51,473 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 02:39:51,659 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 02:39:51,660 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:51,660 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:51,661 INFO L85 PathProgramCache]: Analyzing trace with hash -931862500, now seen corresponding path program 6 times [2024-11-16 02:39:51,661 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:51,661 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2015601322] [2024-11-16 02:39:51,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:51,661 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:51,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:52,256 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:39:52,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:52,289 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 02:39:52,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:52,318 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-11-16 02:39:52,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:52,354 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 02:39:52,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:52,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2015601322] [2024-11-16 02:39:52,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2015601322] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:52,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [552056535] [2024-11-16 02:39:52,355 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:39:52,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:52,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:52,357 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 02:39:52,359 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 02:39:52,542 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:39:52,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:52,544 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:39:52,548 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:52,603 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 02:39:52,604 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:52,673 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 02:39:52,673 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [552056535] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:52,674 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:52,674 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2024-11-16 02:39:52,674 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [91138153] [2024-11-16 02:39:52,674 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:52,675 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:39:52,675 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:52,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:39:52,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:39:52,676 INFO L87 Difference]: Start difference. First operand 261 states and 355 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 02:39:52,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:52,715 INFO L93 Difference]: Finished difference Result 504 states and 696 transitions. [2024-11-16 02:39:52,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:39:52,716 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 02:39:52,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:52,718 INFO L225 Difference]: With dead ends: 504 [2024-11-16 02:39:52,718 INFO L226 Difference]: Without dead ends: 271 [2024-11-16 02:39:52,720 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:39:52,720 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 44 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:52,720 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:52,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-16 02:39:52,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-16 02:39:52,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 266 states have (on average 1.349624060150376) internal successors, (359), 266 states have internal predecessors, (359), 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 02:39:52,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 365 transitions. [2024-11-16 02:39:52,732 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 365 transitions. Word has length 422 [2024-11-16 02:39:52,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:52,732 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 365 transitions. [2024-11-16 02:39:52,733 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 02:39:52,733 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 365 transitions. [2024-11-16 02:39:52,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-16 02:39:52,739 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:52,739 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 02:39:52,758 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2024-11-16 02:39:52,943 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 02:39:52,944 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:52,944 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:52,944 INFO L85 PathProgramCache]: Analyzing trace with hash 666014559, now seen corresponding path program 7 times [2024-11-16 02:39:52,944 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:52,945 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1406950741] [2024-11-16 02:39:52,945 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:52,945 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:53,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,474 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-16 02:39:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,503 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 02:39:53,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,530 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-11-16 02:39:53,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,562 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 02:39:53,562 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:53,562 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1406950741] [2024-11-16 02:39:53,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1406950741] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:53,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1559498311] [2024-11-16 02:39:53,563 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:39:53,563 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:53,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:53,565 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 02:39:53,566 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 02:39:53,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,840 INFO L255 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:39:53,845 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:53,924 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 02:39:53,927 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:54,257 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 02:39:54,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1559498311] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:54,258 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:54,258 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-16 02:39:54,258 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12133121] [2024-11-16 02:39:54,259 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:54,259 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:39:54,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:54,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:39:54,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:39:54,261 INFO L87 Difference]: Start difference. First operand 271 states and 365 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 02:39:54,307 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:54,307 INFO L93 Difference]: Finished difference Result 542 states and 744 transitions. [2024-11-16 02:39:54,307 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 02:39:54,308 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 02:39:54,308 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:54,309 INFO L225 Difference]: With dead ends: 542 [2024-11-16 02:39:54,311 INFO L226 Difference]: Without dead ends: 301 [2024-11-16 02:39:54,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 884 GetRequests, 855 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:39:54,313 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 207 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:54,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 207 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:54,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-16 02:39:54,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-16 02:39:54,321 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 296 states have (on average 1.3141891891891893) internal successors, (389), 296 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 02:39:54,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 395 transitions. [2024-11-16 02:39:54,323 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 395 transitions. Word has length 432 [2024-11-16 02:39:54,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:54,324 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 395 transitions. [2024-11-16 02:39:54,324 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 02:39:54,324 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 395 transitions. [2024-11-16 02:39:54,331 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-16 02:39:54,331 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:54,331 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 02:39:54,350 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-16 02:39:54,532 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 02:39:54,532 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:54,533 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:54,533 INFO L85 PathProgramCache]: Analyzing trace with hash -322132848, now seen corresponding path program 8 times [2024-11-16 02:39:54,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:54,533 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1786038250] [2024-11-16 02:39:54,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:54,533 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:54,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:55,729 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 02:39:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:55,750 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-11-16 02:39:55,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:55,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-11-16 02:39:55,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:55,802 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 02:39:55,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:55,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1786038250] [2024-11-16 02:39:55,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1786038250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:55,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [826700016] [2024-11-16 02:39:55,803 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:39:55,803 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:55,803 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:55,805 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 02:39:55,806 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 02:39:56,137 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:39:56,138 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:56,145 INFO L255 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 02:39:56,151 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:56,258 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 02:39:56,259 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:57,423 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 02:39:57,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [826700016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:57,424 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:57,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-16 02:39:57,425 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700913849] [2024-11-16 02:39:57,425 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:57,426 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-16 02:39:57,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:57,427 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-16 02:39:57,428 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:39:57,429 INFO L87 Difference]: Start difference. First operand 301 states and 395 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 02:39:57,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:57,503 INFO L93 Difference]: Finished difference Result 602 states and 819 transitions. [2024-11-16 02:39:57,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-16 02:39:57,504 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 02:39:57,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:57,506 INFO L225 Difference]: With dead ends: 602 [2024-11-16 02:39:57,506 INFO L226 Difference]: Without dead ends: 361 [2024-11-16 02:39:57,508 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:39:57,509 INFO L432 NwaCegarLoop]: 33 mSDtfsCounter, 0 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 236 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:57,509 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 236 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-16 02:39:57,510 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-16 02:39:57,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-16 02:39:57,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 356 states have (on average 1.2612359550561798) internal successors, (449), 356 states have internal predecessors, (449), 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 02:39:57,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 455 transitions. [2024-11-16 02:39:57,519 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 455 transitions. Word has length 462 [2024-11-16 02:39:57,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:57,520 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 455 transitions. [2024-11-16 02:39:57,520 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 02:39:57,520 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 455 transitions. [2024-11-16 02:39:57,523 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-16 02:39:57,523 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:57,524 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 02:39:57,543 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 02:39:57,727 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 02:39:57,728 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:57,728 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:57,728 INFO L85 PathProgramCache]: Analyzing trace with hash -796421198, now seen corresponding path program 9 times [2024-11-16 02:39:57,728 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:57,728 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1156279724] [2024-11-16 02:39:57,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:57,729 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:57,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:00,861 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 02:40:00,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:00,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-11-16 02:40:00,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:00,907 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2024-11-16 02:40:00,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:00,930 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 02:40:00,930 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:00,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1156279724] [2024-11-16 02:40:00,930 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1156279724] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:40:00,930 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735704264] [2024-11-16 02:40:00,931 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:40:00,931 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:40:00,931 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:40:00,933 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 02:40:00,934 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 02:40:01,254 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 02:40:01,254 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:40:01,258 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:40:01,264 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:40:01,492 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 02:40:01,492 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:40:01,830 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 02:40:01,830 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735704264] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:40:01,830 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:40:01,830 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 9, 9] total 75 [2024-11-16 02:40:01,831 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544467828] [2024-11-16 02:40:01,831 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:40:01,833 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 02:40:01,833 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:40:01,835 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 02:40:01,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:40:01,838 INFO L87 Difference]: Start difference. First operand 361 states and 455 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 02:40:01,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:40:01,955 INFO L93 Difference]: Finished difference Result 620 states and 816 transitions. [2024-11-16 02:40:01,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 02:40:01,956 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 02:40:01,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:40:01,959 INFO L225 Difference]: With dead ends: 620 [2024-11-16 02:40:01,959 INFO L226 Difference]: Without dead ends: 379 [2024-11-16 02:40:01,962 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:40:01,962 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 298 SdHoareTripleChecker+Invalid, 108 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:40:01,963 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 298 Invalid, 108 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:40:01,964 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-16 02:40:01,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-11-16 02:40:01,972 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 379 states, 374 states have (on average 1.2486631016042782) internal successors, (467), 374 states have internal predecessors, (467), 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 02:40:01,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 473 transitions. [2024-11-16 02:40:01,974 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 473 transitions. Word has length 522 [2024-11-16 02:40:01,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:40:01,975 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 473 transitions. [2024-11-16 02:40:01,976 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 02:40:01,977 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 473 transitions. [2024-11-16 02:40:01,980 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-16 02:40:01,980 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:01,980 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 02:40:01,999 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 02:40:02,184 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 02:40:02,185 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:02,185 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:02,185 INFO L85 PathProgramCache]: Analyzing trace with hash 1048684281, now seen corresponding path program 10 times [2024-11-16 02:40:02,185 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:02,185 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672464215] [2024-11-16 02:40:02,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:02,186 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:02,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:04,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 02:40:04,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:04,875 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-11-16 02:40:04,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:04,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-11-16 02:40:04,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:04,917 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 02:40:04,917 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:04,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672464215] [2024-11-16 02:40:04,917 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672464215] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:40:04,917 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [314765462] [2024-11-16 02:40:04,918 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:40:04,918 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:40:04,918 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:40:04,920 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 02:40:04,922 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 02:40:05,318 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:40:05,319 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:40:05,325 INFO L255 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:40:05,332 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:40:06,510 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 02:40:06,510 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:40:08,182 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 02:40:08,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [314765462] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:40:08,183 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:40:08,183 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 33, 33] total 124 [2024-11-16 02:40:08,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [829129426] [2024-11-16 02:40:08,183 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:40:08,186 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-16 02:40:08,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:40:08,188 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-16 02:40:08,194 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-16 02:40:08,194 INFO L87 Difference]: Start difference. First operand 379 states and 473 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 02:40:09,047 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:40:09,048 INFO L93 Difference]: Finished difference Result 862 states and 1181 transitions. [2024-11-16 02:40:09,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-16 02:40:09,049 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 02:40:09,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:40:09,052 INFO L225 Difference]: With dead ends: 862 [2024-11-16 02:40:09,052 INFO L226 Difference]: Without dead ends: 605 [2024-11-16 02:40:09,056 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-16 02:40:09,057 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 1240 mSDsluCounter, 684 mSDsCounter, 0 mSdLazyCounter, 276 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1240 SdHoareTripleChecker+Valid, 715 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 276 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-16 02:40:09,057 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1240 Valid, 715 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 276 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-16 02:40:09,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-16 02:40:09,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-16 02:40:09,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 605 states, 600 states have (on average 1.315) internal successors, (789), 600 states have internal predecessors, (789), 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 02:40:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 795 transitions. [2024-11-16 02:40:09,073 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 795 transitions. Word has length 540 [2024-11-16 02:40:09,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:40:09,073 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 795 transitions. [2024-11-16 02:40:09,074 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 02:40:09,074 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 795 transitions. [2024-11-16 02:40:09,080 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2024-11-16 02:40:09,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:09,081 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 02:40:09,102 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-16 02:40:09,282 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 02:40:09,282 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:09,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:09,283 INFO L85 PathProgramCache]: Analyzing trace with hash 141668792, now seen corresponding path program 11 times [2024-11-16 02:40:09,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:09,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2019171940] [2024-11-16 02:40:09,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:09,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:09,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:12,580 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 02:40:12,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:12,623 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-11-16 02:40:12,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:12,651 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2024-11-16 02:40:12,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:12,683 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 02:40:12,683 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:12,683 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2019171940] [2024-11-16 02:40:12,683 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2019171940] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:40:12,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1782823854] [2024-11-16 02:40:12,684 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:40:12,684 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:40:12,684 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:40:12,686 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 02:40:12,688 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process