./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/array-crafted/xor3.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/xor3.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 c89c2ec3a6d8d6162c4c4ac97fed99fb9c343c7a2c2e60d87226da2b47103d07 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-3289d67-m [2024-11-16 02:39:40,820 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-16 02:39:40,879 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2024-11-16 02:39:40,882 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-16 02:39:40,884 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-16 02:39:40,906 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-16 02:39:40,907 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-16 02:39:40,907 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-16 02:39:40,907 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-16 02:39:40,908 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-16 02:39:40,908 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-16 02:39:40,909 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-16 02:39:40,909 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-16 02:39:40,911 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-16 02:39:40,911 INFO L153 SettingsManager]: * Use SBE=true [2024-11-16 02:39:40,911 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-16 02:39:40,911 INFO L153 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2024-11-16 02:39:40,912 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-16 02:39:40,912 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-16 02:39:40,912 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-16 02:39:40,912 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-16 02:39:40,915 INFO L153 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2024-11-16 02:39:40,916 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-16 02:39:40,916 INFO L153 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2024-11-16 02:39:40,916 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-16 02:39:40,916 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-16 02:39:40,916 INFO L153 SettingsManager]: * Check if freed pointer was valid=false [2024-11-16 02:39:40,917 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-16 02:39:40,917 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-16 02:39:40,917 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-16 02:39:40,917 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-16 02:39:40,917 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-16 02:39:40,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:39:40,918 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-16 02:39:40,918 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-16 02:39:40,918 INFO L153 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopHeads [2024-11-16 02:39:40,918 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-16 02:39:40,918 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-16 02:39:40,918 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-16 02:39:40,919 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-16 02:39:40,919 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-16 02:39:40,919 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-16 02:39:40,920 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c89c2ec3a6d8d6162c4c4ac97fed99fb9c343c7a2c2e60d87226da2b47103d07 [2024-11-16 02:39:41,108 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-16 02:39:41,125 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-16 02:39:41,127 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-16 02:39:41,128 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-16 02:39:41,129 INFO L274 PluginConnector]: CDTParser initialized [2024-11-16 02:39:41,130 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-crafted/xor3.i [2024-11-16 02:39:42,493 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-16 02:39:42,659 INFO L384 CDTParser]: Found 1 translation units. [2024-11-16 02:39:42,659 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-crafted/xor3.i [2024-11-16 02:39:42,667 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868b0c7b8/ad9fbd954e494cda8c360696216f6fa2/FLAGa3ffd8ee1 [2024-11-16 02:39:42,679 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/868b0c7b8/ad9fbd954e494cda8c360696216f6fa2 [2024-11-16 02:39:42,681 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-16 02:39:42,682 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-16 02:39:42,683 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-16 02:39:42,683 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-16 02:39:42,688 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-16 02:39:42,689 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:42,690 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1429982e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42, skipping insertion in model container [2024-11-16 02:39:42,690 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:42,715 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-16 02:39:42,901 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/xor3.i[1297,1310] [2024-11-16 02:39:42,906 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:39:42,920 INFO L200 MainTranslator]: Completed pre-run [2024-11-16 02:39:42,946 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/xor3.i[1297,1310] [2024-11-16 02:39:42,948 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-16 02:39:42,963 INFO L204 MainTranslator]: Completed translation [2024-11-16 02:39:42,965 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42 WrapperNode [2024-11-16 02:39:42,966 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-16 02:39:42,967 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-16 02:39:42,967 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-16 02:39:42,967 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-16 02:39:42,972 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:42,992 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,016 INFO L138 Inliner]: procedures = 16, calls = 30, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 74 [2024-11-16 02:39:43,022 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-16 02:39:43,023 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-16 02:39:43,023 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-16 02:39:43,023 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-16 02:39:43,035 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,039 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,043 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,053 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 02:39:43,054 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,054 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,058 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,059 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,062 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,063 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,065 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-16 02:39:43,065 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-16 02:39:43,066 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-16 02:39:43,066 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-16 02:39:43,066 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (1/1) ... [2024-11-16 02:39:43,075 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-16 02:39:43,088 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:43,101 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 02:39:43,112 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 02:39:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-16 02:39:43,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-16 02:39:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-16 02:39:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-16 02:39:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-16 02:39:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-16 02:39:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-16 02:39:43,154 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-16 02:39:43,155 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-16 02:39:43,156 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-16 02:39:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-16 02:39:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-16 02:39:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-16 02:39:43,156 INFO L130 BoogieDeclarations]: Found specification of procedure xor [2024-11-16 02:39:43,157 INFO L138 BoogieDeclarations]: Found implementation of procedure xor [2024-11-16 02:39:43,157 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-16 02:39:43,246 INFO L256 CfgBuilder]: Building ICFG [2024-11-16 02:39:43,248 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-16 02:39:43,432 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 02:39:43,489 INFO L? ?]: Removed 22 outVars from TransFormulas that were not future-live. [2024-11-16 02:39:43,489 INFO L307 CfgBuilder]: Performing block encoding [2024-11-16 02:39:43,505 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-16 02:39:43,505 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-16 02:39:43,506 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:39:43 BoogieIcfgContainer [2024-11-16 02:39:43,506 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-16 02:39:43,508 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-16 02:39:43,508 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-16 02:39:43,511 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-16 02:39:43,511 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.11 02:39:42" (1/3) ... [2024-11-16 02:39:43,512 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717690bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:39:43, skipping insertion in model container [2024-11-16 02:39:43,513 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.11 02:39:42" (2/3) ... [2024-11-16 02:39:43,514 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@717690bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.11 02:39:43, skipping insertion in model container [2024-11-16 02:39:43,514 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 16.11 02:39:43" (3/3) ... [2024-11-16 02:39:43,515 INFO L112 eAbstractionObserver]: Analyzing ICFG xor3.i [2024-11-16 02:39:43,539 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:LoopHeads NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-16 02:39:43,539 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2024-11-16 02:39:43,590 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-16 02:39:43,595 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;@2d04382, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-16 02:39:43,596 INFO L334 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2024-11-16 02:39:43,599 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 02:39:43,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-16 02:39:43,604 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:43,605 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 02:39:43,605 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:43,610 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:43,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1401774428, now seen corresponding path program 1 times [2024-11-16 02:39:43,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:43,618 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [43819571] [2024-11-16 02:39:43,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:43,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:43,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:43,816 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2024-11-16 02:39:43,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:43,829 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-11-16 02:39:43,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:43,850 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 20 [2024-11-16 02:39:43,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:43,861 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 02:39:43,861 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:43,862 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [43819571] [2024-11-16 02:39:43,862 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [43819571] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:43,862 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-16 02:39:43,863 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-16 02:39:43,864 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1352170260] [2024-11-16 02:39:43,864 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:43,867 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-16 02:39:43,867 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:43,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-16 02:39:43,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-16 02:39:43,891 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 02:39:43,907 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:43,907 INFO L93 Difference]: Finished difference Result 60 states and 83 transitions. [2024-11-16 02:39:43,910 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-16 02:39:43,911 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 02:39:43,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:43,930 INFO L225 Difference]: With dead ends: 60 [2024-11-16 02:39:43,934 INFO L226 Difference]: Without dead ends: 28 [2024-11-16 02:39:43,937 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 02:39:43,939 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 02:39:43,940 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 02:39:43,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-11-16 02:39:43,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-11-16 02:39:44,001 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 02:39:44,005 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 35 transitions. [2024-11-16 02:39:44,006 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 35 transitions. Word has length 29 [2024-11-16 02:39:44,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:44,007 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 35 transitions. [2024-11-16 02:39:44,007 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 02:39:44,007 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 35 transitions. [2024-11-16 02:39:44,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-16 02:39:44,009 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:44,009 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 02:39:44,012 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-16 02:39:44,013 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:44,013 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:44,013 INFO L85 PathProgramCache]: Analyzing trace with hash -298656342, now seen corresponding path program 1 times [2024-11-16 02:39:44,013 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:44,013 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [702196730] [2024-11-16 02:39:44,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:44,014 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:44,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,123 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2024-11-16 02:39:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:39:44,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,152 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-16 02:39:44,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,164 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 02:39:44,164 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:44,164 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [702196730] [2024-11-16 02:39:44,165 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [702196730] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:44,165 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [256187657] [2024-11-16 02:39:44,165 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:44,165 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:44,165 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:44,167 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 02:39:44,168 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 02:39:44,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,240 INFO L255 TraceCheckSpWp]: Trace formula consists of 143 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:39:44,246 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:44,273 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 02:39:44,273 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:39:44,274 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [256187657] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:44,274 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:39:44,274 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [4] total 5 [2024-11-16 02:39:44,275 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [158682525] [2024-11-16 02:39:44,275 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:44,275 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:39:44,276 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:44,277 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:39:44,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:39:44,277 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 02:39:44,291 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:44,292 INFO L93 Difference]: Finished difference Result 54 states and 68 transitions. [2024-11-16 02:39:44,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:39:44,293 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 02:39:44,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:44,294 INFO L225 Difference]: With dead ends: 54 [2024-11-16 02:39:44,294 INFO L226 Difference]: Without dead ends: 30 [2024-11-16 02:39:44,295 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 02:39:44,296 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 02:39:44,297 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 02:39:44,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-11-16 02:39:44,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-11-16 02:39:44,303 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 02:39:44,306 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2024-11-16 02:39:44,306 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 34 [2024-11-16 02:39:44,306 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:44,306 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2024-11-16 02:39:44,306 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 02:39:44,306 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2024-11-16 02:39:44,307 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2024-11-16 02:39:44,307 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:44,308 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 02:39:44,321 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 02:39:44,508 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 02:39:44,509 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:44,510 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:44,510 INFO L85 PathProgramCache]: Analyzing trace with hash -721826583, now seen corresponding path program 1 times [2024-11-16 02:39:44,510 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:44,510 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [836944181] [2024-11-16 02:39:44,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:44,511 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:44,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,628 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:39:44,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,655 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2024-11-16 02:39:44,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,663 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 26 [2024-11-16 02:39:44,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,684 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 02:39:44,685 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:44,685 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [836944181] [2024-11-16 02:39:44,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [836944181] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:44,686 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [844722074] [2024-11-16 02:39:44,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:44,686 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:44,687 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:44,694 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 02:39:44,695 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 02:39:44,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:44,760 INFO L255 TraceCheckSpWp]: Trace formula consists of 153 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:39:44,761 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:44,768 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 02:39:44,768 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:39:44,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [844722074] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:44,771 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:39:44,771 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 5 [2024-11-16 02:39:44,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [492241028] [2024-11-16 02:39:44,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:44,772 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:39:44,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:44,773 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:39:44,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-16 02:39:44,774 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 02:39:44,788 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:44,789 INFO L93 Difference]: Finished difference Result 59 states and 78 transitions. [2024-11-16 02:39:44,790 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:39:44,790 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 02:39:44,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:44,791 INFO L225 Difference]: With dead ends: 59 [2024-11-16 02:39:44,791 INFO L226 Difference]: Without dead ends: 37 [2024-11-16 02:39:44,792 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 02:39:44,793 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 02:39:44,794 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 02:39:44,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2024-11-16 02:39:44,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2024-11-16 02:39:44,799 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 02:39:44,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2024-11-16 02:39:44,800 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 36 [2024-11-16 02:39:44,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:44,800 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2024-11-16 02:39:44,800 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 02:39:44,801 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2024-11-16 02:39:44,803 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-16 02:39:44,803 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:44,803 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 02:39:44,817 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 02:39:45,007 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 02:39:45,008 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:45,009 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:45,010 INFO L85 PathProgramCache]: Analyzing trace with hash 577035755, now seen corresponding path program 1 times [2024-11-16 02:39:45,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:45,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2010265023] [2024-11-16 02:39:45,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:45,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:45,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:39:45,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,097 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:39:45,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,131 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 34 [2024-11-16 02:39:45,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,138 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 02:39:45,138 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:45,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2010265023] [2024-11-16 02:39:45,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2010265023] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:45,138 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1469131802] [2024-11-16 02:39:45,138 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:45,138 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:45,139 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:45,144 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 02:39:45,146 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 02:39:45,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,220 INFO L255 TraceCheckSpWp]: Trace formula consists of 189 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-16 02:39:45,221 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:45,243 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 02:39:45,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-16 02:39:45,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1469131802] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-16 02:39:45,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-16 02:39:45,245 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [6] total 7 [2024-11-16 02:39:45,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1666361850] [2024-11-16 02:39:45,245 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-16 02:39:45,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-16 02:39:45,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:45,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-16 02:39:45,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-16 02:39:45,247 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 02:39:45,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:45,268 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2024-11-16 02:39:45,269 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-16 02:39:45,269 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 02:39:45,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:45,270 INFO L225 Difference]: With dead ends: 53 [2024-11-16 02:39:45,270 INFO L226 Difference]: Without dead ends: 34 [2024-11-16 02:39:45,270 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 02:39:45,271 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 02:39:45,271 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 02:39:45,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-11-16 02:39:45,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-11-16 02:39:45,280 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 02:39:45,280 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 41 transitions. [2024-11-16 02:39:45,281 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 41 transitions. Word has length 48 [2024-11-16 02:39:45,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:45,284 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 41 transitions. [2024-11-16 02:39:45,286 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 02:39:45,288 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 41 transitions. [2024-11-16 02:39:45,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-16 02:39:45,289 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:45,289 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 02:39:45,303 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-16 02:39:45,489 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 02:39:45,490 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:45,490 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:45,490 INFO L85 PathProgramCache]: Analyzing trace with hash 1627662892, now seen corresponding path program 1 times [2024-11-16 02:39:45,493 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:45,493 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108767030] [2024-11-16 02:39:45,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:45,493 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:45,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2024-11-16 02:39:45,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,558 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-16 02:39:45,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,616 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2024-11-16 02:39:45,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,626 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 02:39:45,626 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108767030] [2024-11-16 02:39:45,626 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108767030] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:45,626 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2063840124] [2024-11-16 02:39:45,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:45,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:45,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:45,629 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 02:39:45,631 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 02:39:45,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:45,697 INFO L255 TraceCheckSpWp]: Trace formula consists of 197 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-16 02:39:45,698 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:45,739 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 02:39:45,739 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:45,772 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 02:39:45,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2063840124] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:45,772 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:45,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 4, 4] total 9 [2024-11-16 02:39:45,772 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [402353849] [2024-11-16 02:39:45,773 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:45,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-16 02:39:45,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:45,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-16 02:39:45,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 02:39:45,774 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 02:39:45,807 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:45,807 INFO L93 Difference]: Finished difference Result 80 states and 106 transitions. [2024-11-16 02:39:45,808 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:39:45,808 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 02:39:45,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:45,809 INFO L225 Difference]: With dead ends: 80 [2024-11-16 02:39:45,809 INFO L226 Difference]: Without dead ends: 52 [2024-11-16 02:39:45,809 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=46, Unknown=0, NotChecked=0, Total=72 [2024-11-16 02:39:45,810 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 02:39:45,810 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 02:39:45,810 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-11-16 02:39:45,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 47. [2024-11-16 02:39:45,818 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 02:39:45,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 57 transitions. [2024-11-16 02:39:45,818 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 57 transitions. Word has length 50 [2024-11-16 02:39:45,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:45,819 INFO L471 AbstractCegarLoop]: Abstraction has 47 states and 57 transitions. [2024-11-16 02:39:45,819 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 02:39:45,819 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 57 transitions. [2024-11-16 02:39:45,820 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-16 02:39:45,820 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:45,820 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 02:39:45,837 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 02:39:46,020 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 02:39:46,021 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:46,021 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:46,022 INFO L85 PathProgramCache]: Analyzing trace with hash -1331421269, now seen corresponding path program 2 times [2024-11-16 02:39:46,022 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:46,022 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [641595737] [2024-11-16 02:39:46,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:46,022 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:46,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,125 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2024-11-16 02:39:46,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:39:46,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,144 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2024-11-16 02:39:46,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,155 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 02:39:46,155 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:46,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [641595737] [2024-11-16 02:39:46,155 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [641595737] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:46,155 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1382172594] [2024-11-16 02:39:46,155 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:39:46,156 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:46,156 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:46,160 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 02:39:46,168 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 02:39:46,245 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:39:46,246 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:46,247 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-16 02:39:46,249 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:46,286 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 02:39:46,287 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:46,352 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 02:39:46,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1382172594] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:46,352 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:46,353 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 7, 7] total 14 [2024-11-16 02:39:46,353 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690106719] [2024-11-16 02:39:46,353 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:46,353 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-16 02:39:46,354 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:46,354 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-16 02:39:46,354 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=71, Invalid=111, Unknown=0, NotChecked=0, Total=182 [2024-11-16 02:39:46,354 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 02:39:46,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:46,387 INFO L93 Difference]: Finished difference Result 96 states and 122 transitions. [2024-11-16 02:39:46,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-16 02:39:46,388 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 02:39:46,388 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:46,389 INFO L225 Difference]: With dead ends: 96 [2024-11-16 02:39:46,389 INFO L226 Difference]: Without dead ends: 61 [2024-11-16 02:39:46,389 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 02:39:46,390 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 02:39:46,390 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 02:39:46,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2024-11-16 02:39:46,394 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2024-11-16 02:39:46,394 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 02:39:46,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 71 transitions. [2024-11-16 02:39:46,395 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 71 transitions. Word has length 68 [2024-11-16 02:39:46,395 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:46,395 INFO L471 AbstractCegarLoop]: Abstraction has 61 states and 71 transitions. [2024-11-16 02:39:46,395 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 02:39:46,395 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 71 transitions. [2024-11-16 02:39:46,396 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2024-11-16 02:39:46,396 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:46,396 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 02:39:46,412 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-16 02:39:46,600 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 02:39:46,601 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:46,601 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:46,602 INFO L85 PathProgramCache]: Analyzing trace with hash -358262490, now seen corresponding path program 3 times [2024-11-16 02:39:46,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:46,602 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1041999194] [2024-11-16 02:39:46,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:46,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:46,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,701 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:39:46,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,722 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 41 [2024-11-16 02:39:46,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,727 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2024-11-16 02:39:46,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:46,732 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 02:39:46,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:46,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1041999194] [2024-11-16 02:39:46,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1041999194] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:46,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1087184249] [2024-11-16 02:39:46,733 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:39:46,733 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:46,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:46,738 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 02:39:46,743 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 02:39:46,831 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-16 02:39:46,831 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:46,832 INFO L255 TraceCheckSpWp]: Trace formula consists of 174 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:39:46,833 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:46,848 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 02:39:46,848 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:46,884 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 02:39:46,885 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1087184249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:46,885 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:46,885 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-16 02:39:46,885 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1776676317] [2024-11-16 02:39:46,885 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:46,885 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-16 02:39:46,886 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:46,886 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-16 02:39:46,886 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=28, Unknown=0, NotChecked=0, Total=56 [2024-11-16 02:39:46,886 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 02:39:46,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:46,914 INFO L93 Difference]: Finished difference Result 124 states and 161 transitions. [2024-11-16 02:39:46,914 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-16 02:39:46,915 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 02:39:46,915 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:46,915 INFO L225 Difference]: With dead ends: 124 [2024-11-16 02:39:46,916 INFO L226 Difference]: Without dead ends: 89 [2024-11-16 02:39:46,916 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 02:39:46,916 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 02:39:46,917 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 02:39:46,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-11-16 02:39:46,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-11-16 02:39:46,922 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 02:39:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 111 transitions. [2024-11-16 02:39:46,922 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 111 transitions. Word has length 82 [2024-11-16 02:39:46,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:46,923 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 111 transitions. [2024-11-16 02:39:46,923 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 02:39:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 111 transitions. [2024-11-16 02:39:46,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2024-11-16 02:39:46,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:46,924 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 02:39:46,939 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 02:39:47,125 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 02:39:47,126 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:47,126 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:47,126 INFO L85 PathProgramCache]: Analyzing trace with hash 1156015406, now seen corresponding path program 4 times [2024-11-16 02:39:47,126 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:47,126 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [299586276] [2024-11-16 02:39:47,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:47,127 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:47,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,353 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2024-11-16 02:39:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,361 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 57 [2024-11-16 02:39:47,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,368 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2024-11-16 02:39:47,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:47,376 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 02:39:47,377 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [299586276] [2024-11-16 02:39:47,377 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [299586276] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:47,377 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1948956973] [2024-11-16 02:39:47,377 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:39:47,377 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:47,378 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:47,382 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 02:39:47,388 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 02:39:47,489 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:39:47,490 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:47,491 INFO L255 TraceCheckSpWp]: Trace formula consists of 475 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-16 02:39:47,494 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:47,580 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 02:39:47,580 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:47,713 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 02:39:47,713 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1948956973] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:47,713 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:47,713 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 9, 9] total 27 [2024-11-16 02:39:47,714 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [424271788] [2024-11-16 02:39:47,714 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:47,714 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-16 02:39:47,714 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:47,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-16 02:39:47,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:39:47,715 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 02:39:47,795 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:47,796 INFO L93 Difference]: Finished difference Result 212 states and 291 transitions. [2024-11-16 02:39:47,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-16 02:39:47,796 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 02:39:47,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:47,797 INFO L225 Difference]: With dead ends: 212 [2024-11-16 02:39:47,798 INFO L226 Difference]: Without dead ends: 147 [2024-11-16 02:39:47,798 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 277 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 140 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=197, Invalid=505, Unknown=0, NotChecked=0, Total=702 [2024-11-16 02:39:47,799 INFO L432 NwaCegarLoop]: 31 mSDtfsCounter, 196 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 92 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 02:39:47,799 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 02:39:47,800 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2024-11-16 02:39:47,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 147. [2024-11-16 02:39:47,806 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 02:39:47,807 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 193 transitions. [2024-11-16 02:39:47,807 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 193 transitions. Word has length 130 [2024-11-16 02:39:47,807 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:47,807 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 193 transitions. [2024-11-16 02:39:47,808 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 02:39:47,808 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 193 transitions. [2024-11-16 02:39:47,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2024-11-16 02:39:47,810 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:47,810 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 02:39:47,829 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 02:39:48,010 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 02:39:48,011 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:48,011 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:48,011 INFO L85 PathProgramCache]: Analyzing trace with hash 1831056509, now seen corresponding path program 5 times [2024-11-16 02:39:48,011 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:48,011 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739162326] [2024-11-16 02:39:48,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:48,011 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:48,082 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,317 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2024-11-16 02:39:48,323 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,330 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2024-11-16 02:39:48,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,341 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 162 [2024-11-16 02:39:48,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:48,355 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 02:39:48,355 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739162326] [2024-11-16 02:39:48,355 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [739162326] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:48,355 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2136648122] [2024-11-16 02:39:48,355 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:39:48,355 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:48,356 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:48,357 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 02:39:48,367 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 02:39:48,655 INFO L227 tOrderPrioritization]: Assert order INSIDE_LOOP_FIRST1 issued 29 check-sat command(s) [2024-11-16 02:39:48,655 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:48,659 INFO L255 TraceCheckSpWp]: Trace formula consists of 700 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-16 02:39:48,662 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:48,889 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 02:39:48,889 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:49,272 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 02:39:49,272 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2136648122] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:49,272 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:49,272 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 17, 17] total 44 [2024-11-16 02:39:49,272 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [834553299] [2024-11-16 02:39:49,273 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:49,273 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-16 02:39:49,273 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:49,274 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-16 02:39:49,275 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:39:49,275 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 02:39:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:49,462 INFO L93 Difference]: Finished difference Result 382 states and 541 transitions. [2024-11-16 02:39:49,462 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 44 states. [2024-11-16 02:39:49,463 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 02:39:49,463 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:49,464 INFO L225 Difference]: With dead ends: 382 [2024-11-16 02:39:49,464 INFO L226 Difference]: Without dead ends: 261 [2024-11-16 02:39:49,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 474 GetRequests, 432 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 330 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=586, Invalid=1306, Unknown=0, NotChecked=0, Total=1892 [2024-11-16 02:39:49,466 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 02:39:49,466 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 02:39:49,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 261 states. [2024-11-16 02:39:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 261 to 261. [2024-11-16 02:39:49,475 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 02:39:49,476 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 261 states to 261 states and 355 transitions. [2024-11-16 02:39:49,477 INFO L78 Accepts]: Start accepts. Automaton has 261 states and 355 transitions. Word has length 228 [2024-11-16 02:39:49,477 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:49,477 INFO L471 AbstractCegarLoop]: Abstraction has 261 states and 355 transitions. [2024-11-16 02:39:49,477 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 02:39:49,477 INFO L276 IsEmpty]: Start isEmpty. Operand 261 states and 355 transitions. [2024-11-16 02:39:49,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 423 [2024-11-16 02:39:49,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:49,481 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 02:39:49,495 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 02:39:49,682 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 02:39:49,682 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:49,683 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:49,683 INFO L85 PathProgramCache]: Analyzing trace with hash -931862500, now seen corresponding path program 6 times [2024-11-16 02:39:49,683 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:49,683 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1278252928] [2024-11-16 02:39:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:49,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:49,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:50,084 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2024-11-16 02:39:50,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:50,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 157 [2024-11-16 02:39:50,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:50,135 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2024-11-16 02:39:50,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:50,161 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 02:39:50,161 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1278252928] [2024-11-16 02:39:50,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1278252928] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:50,161 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1746107802] [2024-11-16 02:39:50,161 INFO L93 rtionOrderModulation]: Changing assertion order to MIX_INSIDE_OUTSIDE [2024-11-16 02:39:50,162 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:50,162 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:50,163 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 02:39:50,166 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 02:39:50,282 INFO L227 tOrderPrioritization]: Assert order MIX_INSIDE_OUTSIDE issued 7 check-sat command(s) [2024-11-16 02:39:50,283 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:50,284 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-16 02:39:50,288 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:50,342 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 02:39:50,342 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:50,416 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 02:39:50,418 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1746107802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:50,419 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:50,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 5, 5] total 21 [2024-11-16 02:39:50,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1201845239] [2024-11-16 02:39:50,419 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:50,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2024-11-16 02:39:50,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:50,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2024-11-16 02:39:50,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:39:50,421 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 02:39:50,520 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:50,521 INFO L93 Difference]: Finished difference Result 504 states and 696 transitions. [2024-11-16 02:39:50,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-16 02:39:50,524 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 02:39:50,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:50,526 INFO L225 Difference]: With dead ends: 504 [2024-11-16 02:39:50,526 INFO L226 Difference]: Without dead ends: 271 [2024-11-16 02:39:50,527 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 863 GetRequests, 844 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=132, Invalid=288, Unknown=0, NotChecked=0, Total=420 [2024-11-16 02:39:50,527 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 157 mSDsCounter, 0 mSdLazyCounter, 44 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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, 0.1s IncrementalHoareTripleChecker+Time [2024-11-16 02:39:50,528 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 189 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 44 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-16 02:39:50,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 271 states. [2024-11-16 02:39:50,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 271 to 271. [2024-11-16 02:39:50,544 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 02:39:50,545 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 365 transitions. [2024-11-16 02:39:50,546 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 365 transitions. Word has length 422 [2024-11-16 02:39:50,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:50,547 INFO L471 AbstractCegarLoop]: Abstraction has 271 states and 365 transitions. [2024-11-16 02:39:50,547 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 02:39:50,547 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 365 transitions. [2024-11-16 02:39:50,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 433 [2024-11-16 02:39:50,551 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:50,551 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 02:39:50,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-16 02:39:50,755 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 02:39:50,756 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:50,756 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:50,758 INFO L85 PathProgramCache]: Analyzing trace with hash 666014559, now seen corresponding path program 7 times [2024-11-16 02:39:50,758 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:50,758 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [282995696] [2024-11-16 02:39:50,758 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:50,758 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:50,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:51,332 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2024-11-16 02:39:51,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:51,354 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 159 [2024-11-16 02:39:51,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:51,375 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 302 [2024-11-16 02:39:51,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:51,403 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 02:39:51,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [282995696] [2024-11-16 02:39:51,403 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [282995696] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:51,403 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1783231536] [2024-11-16 02:39:51,403 INFO L93 rtionOrderModulation]: Changing assertion order to NOT_INCREMENTALLY [2024-11-16 02:39:51,403 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:51,404 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:51,407 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 02:39:51,411 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 02:39:51,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:51,618 INFO L255 TraceCheckSpWp]: Trace formula consists of 1401 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-16 02:39:51,622 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:51,666 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 02:39:51,667 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:52,000 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 02:39:52,004 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1783231536] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:52,004 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:52,004 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16, 16] total 31 [2024-11-16 02:39:52,005 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559665173] [2024-11-16 02:39:52,005 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:52,005 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2024-11-16 02:39:52,005 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:52,006 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2024-11-16 02:39:52,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=465, Invalid=465, Unknown=0, NotChecked=0, Total=930 [2024-11-16 02:39:52,007 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 02:39:52,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:52,061 INFO L93 Difference]: Finished difference Result 542 states and 744 transitions. [2024-11-16 02:39:52,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2024-11-16 02:39:52,062 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 02:39:52,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:52,063 INFO L225 Difference]: With dead ends: 542 [2024-11-16 02:39:52,063 INFO L226 Difference]: Without dead ends: 301 [2024-11-16 02:39:52,064 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 02:39:52,065 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 02:39:52,065 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 02:39:52,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-16 02:39:52,075 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-16 02:39:52,075 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 02:39:52,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 395 transitions. [2024-11-16 02:39:52,077 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 395 transitions. Word has length 432 [2024-11-16 02:39:52,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:52,077 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 395 transitions. [2024-11-16 02:39:52,077 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 02:39:52,077 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 395 transitions. [2024-11-16 02:39:52,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 463 [2024-11-16 02:39:52,081 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:52,081 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 02:39:52,095 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Ended with exit code 0 [2024-11-16 02:39:52,285 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 02:39:52,286 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:52,286 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:52,286 INFO L85 PathProgramCache]: Analyzing trace with hash -322132848, now seen corresponding path program 8 times [2024-11-16 02:39:52,286 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:52,287 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1067896857] [2024-11-16 02:39:52,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:52,287 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:52,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,150 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 61 [2024-11-16 02:39:53,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,167 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 189 [2024-11-16 02:39:53,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,185 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 332 [2024-11-16 02:39:53,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:53,226 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 02:39:53,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:53,226 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1067896857] [2024-11-16 02:39:53,226 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1067896857] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:53,227 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1113010237] [2024-11-16 02:39:53,227 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-16 02:39:53,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:53,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:53,231 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 02:39:53,236 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 02:39:53,509 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-16 02:39:53,509 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:53,517 INFO L255 TraceCheckSpWp]: Trace formula consists of 1551 conjuncts, 30 conjuncts are in the unsatisfiable core [2024-11-16 02:39:53,522 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:53,615 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 02:39:53,616 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:54,668 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 02:39:54,668 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1113010237] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:54,668 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:54,668 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31, 31, 31] total 61 [2024-11-16 02:39:54,668 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1118453612] [2024-11-16 02:39:54,669 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:54,669 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 61 states [2024-11-16 02:39:54,669 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:54,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 61 interpolants. [2024-11-16 02:39:54,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:39:54,672 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 02:39:54,730 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:54,730 INFO L93 Difference]: Finished difference Result 602 states and 819 transitions. [2024-11-16 02:39:54,731 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 60 states. [2024-11-16 02:39:54,731 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 02:39:54,731 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:54,736 INFO L225 Difference]: With dead ends: 602 [2024-11-16 02:39:54,736 INFO L226 Difference]: Without dead ends: 361 [2024-11-16 02:39:54,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 959 GetRequests, 900 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=1830, Invalid=1830, Unknown=0, NotChecked=0, Total=3660 [2024-11-16 02:39:54,739 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 02:39:54,739 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 02:39:54,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 361 states. [2024-11-16 02:39:54,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 361 to 361. [2024-11-16 02:39:54,745 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 02:39:54,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 455 transitions. [2024-11-16 02:39:54,747 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 455 transitions. Word has length 462 [2024-11-16 02:39:54,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:54,747 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 455 transitions. [2024-11-16 02:39:54,747 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 02:39:54,747 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 455 transitions. [2024-11-16 02:39:54,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 523 [2024-11-16 02:39:54,753 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:54,753 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 02:39:54,768 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 02:39:54,953 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 02:39:54,954 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:54,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:54,954 INFO L85 PathProgramCache]: Analyzing trace with hash -796421198, now seen corresponding path program 9 times [2024-11-16 02:39:54,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:54,954 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [19764166] [2024-11-16 02:39:54,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:54,954 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:55,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:57,513 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 121 [2024-11-16 02:39:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:57,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 249 [2024-11-16 02:39:57,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:57,561 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 392 [2024-11-16 02:39:57,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:39:57,581 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 02:39:57,581 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:39:57,581 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [19764166] [2024-11-16 02:39:57,582 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [19764166] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:39:57,582 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1570937968] [2024-11-16 02:39:57,582 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-16 02:39:57,582 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:39:57,582 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:39:57,583 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 02:39:57,584 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 02:39:57,800 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 8 check-sat command(s) [2024-11-16 02:39:57,800 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:39:57,803 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 17 conjuncts are in the unsatisfiable core [2024-11-16 02:39:57,811 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:39:58,051 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 02:39:58,052 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:39:58,308 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 02:39:58,308 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1570937968] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:39:58,308 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:39:58,309 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [61, 9, 9] total 75 [2024-11-16 02:39:58,309 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2089238621] [2024-11-16 02:39:58,309 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:39:58,310 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 75 states [2024-11-16 02:39:58,310 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:39:58,311 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 75 interpolants. [2024-11-16 02:39:58,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:39:58,312 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 02:39:58,393 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:39:58,394 INFO L93 Difference]: Finished difference Result 620 states and 816 transitions. [2024-11-16 02:39:58,394 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 75 states. [2024-11-16 02:39:58,394 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 02:39:58,394 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:39:58,396 INFO L225 Difference]: With dead ends: 620 [2024-11-16 02:39:58,396 INFO L226 Difference]: Without dead ends: 379 [2024-11-16 02:39:58,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1109 GetRequests, 1036 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 812 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=1949, Invalid=3601, Unknown=0, NotChecked=0, Total=5550 [2024-11-16 02:39:58,398 INFO L432 NwaCegarLoop]: 32 mSDtfsCounter, 0 mSDsluCounter, 266 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s 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 02:39:58,399 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 02:39:58,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-16 02:39:58,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 379. [2024-11-16 02:39:58,405 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 02:39:58,407 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 379 states to 379 states and 473 transitions. [2024-11-16 02:39:58,407 INFO L78 Accepts]: Start accepts. Automaton has 379 states and 473 transitions. Word has length 522 [2024-11-16 02:39:58,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:39:58,407 INFO L471 AbstractCegarLoop]: Abstraction has 379 states and 473 transitions. [2024-11-16 02:39:58,407 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 02:39:58,408 INFO L276 IsEmpty]: Start isEmpty. Operand 379 states and 473 transitions. [2024-11-16 02:39:58,410 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 541 [2024-11-16 02:39:58,410 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:39:58,410 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 02:39:58,424 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 02:39:58,614 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 02:39:58,615 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:39:58,615 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:39:58,615 INFO L85 PathProgramCache]: Analyzing trace with hash 1048684281, now seen corresponding path program 10 times [2024-11-16 02:39:58,615 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:39:58,615 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990686364] [2024-11-16 02:39:58,616 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:39:58,616 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:39:58,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:01,001 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 123 [2024-11-16 02:40:01,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:01,015 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 251 [2024-11-16 02:40:01,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:01,028 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 410 [2024-11-16 02:40:01,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:01,043 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 02:40:01,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:01,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990686364] [2024-11-16 02:40:01,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990686364] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:40:01,044 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1099089334] [2024-11-16 02:40:01,044 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2024-11-16 02:40:01,044 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:40:01,044 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:40:01,046 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 02:40:01,047 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 02:40:01,364 INFO L227 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2024-11-16 02:40:01,365 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-16 02:40:01,374 INFO L255 TraceCheckSpWp]: Trace formula consists of 1925 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-16 02:40:01,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-16 02:40:02,406 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 02:40:02,406 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-16 02:40:04,087 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 02:40:04,087 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1099089334] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-16 02:40:04,087 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-16 02:40:04,088 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [62, 33, 33] total 124 [2024-11-16 02:40:04,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1426898565] [2024-11-16 02:40:04,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-16 02:40:04,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 124 states [2024-11-16 02:40:04,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-16 02:40:04,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 124 interpolants. [2024-11-16 02:40:04,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-16 02:40:04,093 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 02:40:04,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-16 02:40:04,871 INFO L93 Difference]: Finished difference Result 862 states and 1181 transitions. [2024-11-16 02:40:04,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 124 states. [2024-11-16 02:40:04,872 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 02:40:04,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-16 02:40:04,874 INFO L225 Difference]: With dead ends: 862 [2024-11-16 02:40:04,875 INFO L226 Difference]: Without dead ends: 605 [2024-11-16 02:40:04,878 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1146 GetRequests, 1024 SyntacticMatches, 0 SemanticMatches, 122 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3658 ImplicationChecksByTransitivity, 3.5s TimeCoverageRelationStatistics Valid=3906, Invalid=11346, Unknown=0, NotChecked=0, Total=15252 [2024-11-16 02:40:04,878 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 02:40:04,879 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 02:40:04,879 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 605 states. [2024-11-16 02:40:04,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 605 to 605. [2024-11-16 02:40:04,887 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 02:40:04,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 605 states to 605 states and 795 transitions. [2024-11-16 02:40:04,890 INFO L78 Accepts]: Start accepts. Automaton has 605 states and 795 transitions. Word has length 540 [2024-11-16 02:40:04,891 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-16 02:40:04,891 INFO L471 AbstractCegarLoop]: Abstraction has 605 states and 795 transitions. [2024-11-16 02:40:04,891 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 02:40:04,891 INFO L276 IsEmpty]: Start isEmpty. Operand 605 states and 795 transitions. [2024-11-16 02:40:04,896 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 927 [2024-11-16 02:40:04,896 INFO L207 NwaCegarLoop]: Found error trace [2024-11-16 02:40:04,896 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 02:40:04,911 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-16 02:40:05,096 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 02:40:05,098 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2024-11-16 02:40:05,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-16 02:40:05,098 INFO L85 PathProgramCache]: Analyzing trace with hash 141668792, now seen corresponding path program 11 times [2024-11-16 02:40:05,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-16 02:40:05,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1887177246] [2024-11-16 02:40:05,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-16 02:40:05,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-16 02:40:05,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:07,958 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 125 [2024-11-16 02:40:07,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:07,989 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 381 [2024-11-16 02:40:08,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:08,017 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 668 [2024-11-16 02:40:08,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-16 02:40:08,080 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 02:40:08,084 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-16 02:40:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1887177246] [2024-11-16 02:40:08,084 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1887177246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-16 02:40:08,084 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2001884272] [2024-11-16 02:40:08,084 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2024-11-16 02:40:08,085 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-16 02:40:08,085 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-16 02:40:08,089 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 02:40:08,091 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process