./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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 valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 07:04:22,966 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 07:04:23,017 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 07:04:23,023 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 07:04:23,024 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 07:04:23,047 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 07:04:23,048 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 07:04:23,048 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 07:04:23,049 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 07:04:23,049 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 07:04:23,049 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 07:04:23,049 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 07:04:23,050 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 07:04:23,051 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 07:04:23,052 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 07:04:23,052 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 07:04:23,053 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 07:04:23,055 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 07:04:23,055 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 07:04:23,055 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 07:04:23,055 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 07:04:23,056 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 07:04:23,056 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 07:04:23,056 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 07:04:23,056 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 07:04:23,057 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 07:04:23,057 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 07:04:23,057 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 07:04:23,057 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 07:04:23,059 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 07:04:23,059 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 07:04:23,059 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 07:04:23,059 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 07:04:23,059 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 07:04:23,059 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 07:04:23,060 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 07:04:23,060 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 07:04:23,060 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 07:04:23,060 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 07:04:23,060 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 07:04:23,060 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 07:04:23,062 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 07:04:23,062 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> fabf091179f48b7141dc193b5040f4974c042bd8a2afb03b99137d693bf63ce7 [2024-11-19 07:04:23,269 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 07:04:23,291 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 07:04:23,294 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 07:04:23,296 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 07:04:23,296 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 07:04:23,297 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2024-11-19 07:04:24,523 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 07:04:24,718 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 07:04:24,723 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_of_sll_nondet_append-1.i [2024-11-19 07:04:24,738 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bfc3a39c/ce2173bc260042b18f3b51220f3baa7b/FLAG1aa403b46 [2024-11-19 07:04:24,766 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6bfc3a39c/ce2173bc260042b18f3b51220f3baa7b [2024-11-19 07:04:24,768 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 07:04:24,769 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 07:04:24,770 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 07:04:24,770 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 07:04:24,778 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 07:04:24,778 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:04:24" (1/1) ... [2024-11-19 07:04:24,779 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@9ce1ae9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:24, skipping insertion in model container [2024-11-19 07:04:24,779 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:04:24" (1/1) ... [2024-11-19 07:04:24,839 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 07:04:25,074 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 07:04:25,082 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 07:04:25,122 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 07:04:25,144 INFO L204 MainTranslator]: Completed translation [2024-11-19 07:04:25,144 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25 WrapperNode [2024-11-19 07:04:25,145 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 07:04:25,146 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 07:04:25,146 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 07:04:25,146 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 07:04:25,153 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,163 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,184 INFO L138 Inliner]: procedures = 129, calls = 40, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 191 [2024-11-19 07:04:25,185 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 07:04:25,186 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 07:04:25,186 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 07:04:25,186 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 07:04:25,194 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,194 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,197 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,216 INFO L175 MemorySlicer]: Split 20 memory accesses to 3 slices as follows [2, 13, 5]. 65 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 0, 1]. The 6 writes are split as follows [0, 5, 1]. [2024-11-19 07:04:25,216 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,216 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,222 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,224 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,226 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,227 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,232 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 07:04:25,233 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 07:04:25,233 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 07:04:25,233 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 07:04:25,234 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (1/1) ... [2024-11-19 07:04:25,238 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 07:04:25,245 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:04:25,259 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) [2024-11-19 07:04:25,261 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 [2024-11-19 07:04:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2024-11-19 07:04:25,300 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2024-11-19 07:04:25,300 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-19 07:04:25,301 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 07:04:25,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 07:04:25,303 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 07:04:25,407 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 07:04:25,408 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 07:04:25,423 INFO L735 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2024-11-19 07:04:25,678 INFO L? ?]: Removed 130 outVars from TransFormulas that were not future-live. [2024-11-19 07:04:25,678 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 07:04:25,693 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 07:04:25,694 INFO L316 CfgBuilder]: Removed 9 assume(true) statements. [2024-11-19 07:04:25,695 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:04:25 BoogieIcfgContainer [2024-11-19 07:04:25,695 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 07:04:25,697 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 07:04:25,698 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 07:04:25,701 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 07:04:25,701 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:04:24" (1/3) ... [2024-11-19 07:04:25,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1c3b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:04:25, skipping insertion in model container [2024-11-19 07:04:25,702 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:04:25" (2/3) ... [2024-11-19 07:04:25,702 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c1c3b56 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:04:25, skipping insertion in model container [2024-11-19 07:04:25,703 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:04:25" (3/3) ... [2024-11-19 07:04:25,703 INFO L112 eAbstractionObserver]: Analyzing ICFG sll_of_sll_nondet_append-1.i [2024-11-19 07:04:25,716 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 07:04:25,716 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 42 error locations. [2024-11-19 07:04:25,752 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 07:04:25,757 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=None, 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;@4fcd34e7, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 07:04:25,757 INFO L334 AbstractCegarLoop]: Starting to check reachability of 42 error locations. [2024-11-19 07:04:25,760 INFO L276 IsEmpty]: Start isEmpty. Operand has 121 states, 76 states have (on average 1.9078947368421053) internal successors, (145), 119 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:25,765 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 07:04:25,765 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:25,766 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 07:04:25,767 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:25,772 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:25,772 INFO L85 PathProgramCache]: Analyzing trace with hash 1083078, now seen corresponding path program 1 times [2024-11-19 07:04:25,779 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:25,779 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1507733855] [2024-11-19 07:04:25,779 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:25,779 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:25,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:25,890 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:25,891 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:25,891 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1507733855] [2024-11-19 07:04:25,892 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1507733855] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:25,892 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:25,892 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:04:25,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1783960466] [2024-11-19 07:04:25,893 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:25,896 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 07:04:25,896 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:25,920 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 07:04:25,920 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 07:04:25,922 INFO L87 Difference]: Start difference. First operand has 121 states, 76 states have (on average 1.9078947368421053) internal successors, (145), 119 states have internal predecessors, (145), 2 states have call successors, (2), 1 states have call predecessors, (2), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:25,937 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:25,937 INFO L93 Difference]: Finished difference Result 120 states and 135 transitions. [2024-11-19 07:04:25,938 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 07:04:25,939 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-19 07:04:25,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:25,944 INFO L225 Difference]: With dead ends: 120 [2024-11-19 07:04:25,944 INFO L226 Difference]: Without dead ends: 114 [2024-11-19 07:04:25,945 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 07:04:25,948 INFO L432 NwaCegarLoop]: 135 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 135 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:25,948 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:25,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-19 07:04:25,977 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-19 07:04:25,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 72 states have (on average 1.7638888888888888) internal successors, (127), 113 states have internal predecessors, (127), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:25,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 127 transitions. [2024-11-19 07:04:25,982 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 127 transitions. Word has length 4 [2024-11-19 07:04:25,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:25,982 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 127 transitions. [2024-11-19 07:04:25,982 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:25,982 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 127 transitions. [2024-11-19 07:04:25,983 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 07:04:25,983 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:25,983 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 07:04:25,984 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-19 07:04:25,984 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:25,985 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:25,985 INFO L85 PathProgramCache]: Analyzing trace with hash 1079730, now seen corresponding path program 1 times [2024-11-19 07:04:25,985 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:25,985 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [485043679] [2024-11-19 07:04:25,985 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:25,986 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:26,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:26,068 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:26,069 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:26,069 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [485043679] [2024-11-19 07:04:26,069 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [485043679] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:26,069 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:26,069 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:04:26,069 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682434799] [2024-11-19 07:04:26,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:26,070 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:04:26,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:26,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:04:26,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:26,071 INFO L87 Difference]: Start difference. First operand 114 states and 127 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:26,171 INFO L93 Difference]: Finished difference Result 139 states and 154 transitions. [2024-11-19 07:04:26,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:04:26,171 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-19 07:04:26,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:26,172 INFO L225 Difference]: With dead ends: 139 [2024-11-19 07:04:26,174 INFO L226 Difference]: Without dead ends: 139 [2024-11-19 07:04:26,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:26,175 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 114 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 56 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 102 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 56 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:26,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 102 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 56 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:26,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2024-11-19 07:04:26,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 112. [2024-11-19 07:04:26,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 72 states have (on average 1.7361111111111112) internal successors, (125), 111 states have internal predecessors, (125), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 125 transitions. [2024-11-19 07:04:26,187 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 125 transitions. Word has length 4 [2024-11-19 07:04:26,187 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:26,188 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 125 transitions. [2024-11-19 07:04:26,188 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,188 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 125 transitions. [2024-11-19 07:04:26,188 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-19 07:04:26,188 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:26,188 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-19 07:04:26,188 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 07:04:26,188 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:26,189 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:26,192 INFO L85 PathProgramCache]: Analyzing trace with hash 1079731, now seen corresponding path program 1 times [2024-11-19 07:04:26,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:26,192 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [804307235] [2024-11-19 07:04:26,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:26,192 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:26,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:26,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:26,256 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:26,256 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [804307235] [2024-11-19 07:04:26,256 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [804307235] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:26,257 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:26,257 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 07:04:26,257 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2105349623] [2024-11-19 07:04:26,257 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:26,258 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:04:26,259 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:26,259 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:04:26,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:26,260 INFO L87 Difference]: Start difference. First operand 112 states and 125 transitions. Second operand has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:26,314 INFO L93 Difference]: Finished difference Result 160 states and 178 transitions. [2024-11-19 07:04:26,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:04:26,314 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-19 07:04:26,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:26,315 INFO L225 Difference]: With dead ends: 160 [2024-11-19 07:04:26,315 INFO L226 Difference]: Without dead ends: 160 [2024-11-19 07:04:26,316 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:26,316 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 52 mSDsluCounter, 110 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 232 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:26,317 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 232 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:26,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2024-11-19 07:04:26,324 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 113. [2024-11-19 07:04:26,324 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 73 states have (on average 1.726027397260274) internal successors, (126), 112 states have internal predecessors, (126), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,325 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 126 transitions. [2024-11-19 07:04:26,325 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 126 transitions. Word has length 4 [2024-11-19 07:04:26,325 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:26,326 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 126 transitions. [2024-11-19 07:04:26,326 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,326 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 126 transitions. [2024-11-19 07:04:26,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-11-19 07:04:26,326 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:26,326 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:26,326 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-19 07:04:26,326 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:26,327 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:26,327 INFO L85 PathProgramCache]: Analyzing trace with hash -336207078, now seen corresponding path program 1 times [2024-11-19 07:04:26,327 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:26,327 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [277865282] [2024-11-19 07:04:26,330 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:26,330 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:26,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:26,401 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:26,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [277865282] [2024-11-19 07:04:26,401 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [277865282] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:04:26,401 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [848152604] [2024-11-19 07:04:26,401 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:26,401 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:26,402 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:04:26,404 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) [2024-11-19 07:04:26,405 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 07:04:26,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:26,466 INFO L255 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 5 conjuncts are in the unsatisfiable core [2024-11-19 07:04:26,468 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:04:26,545 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:26,545 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:04:26,571 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:26,572 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [848152604] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:04:26,572 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:04:26,572 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 7 [2024-11-19 07:04:26,572 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1089386257] [2024-11-19 07:04:26,572 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:04:26,573 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 07:04:26,573 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:26,573 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 07:04:26,573 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-19 07:04:26,574 INFO L87 Difference]: Start difference. First operand 113 states and 126 transitions. Second operand has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:26,638 INFO L93 Difference]: Finished difference Result 245 states and 270 transitions. [2024-11-19 07:04:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 07:04:26,638 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-11-19 07:04:26,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:26,640 INFO L225 Difference]: With dead ends: 245 [2024-11-19 07:04:26,641 INFO L226 Difference]: Without dead ends: 245 [2024-11-19 07:04:26,641 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=22, Unknown=0, NotChecked=0, Total=42 [2024-11-19 07:04:26,642 INFO L432 NwaCegarLoop]: 150 mSDtfsCounter, 402 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 48 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 503 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 48 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:26,643 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [402 Valid, 503 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 48 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:26,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 245 states. [2024-11-19 07:04:26,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 245 to 176. [2024-11-19 07:04:26,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 176 states, 136 states have (on average 1.7352941176470589) internal successors, (236), 175 states have internal predecessors, (236), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 236 transitions. [2024-11-19 07:04:26,657 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 236 transitions. Word has length 9 [2024-11-19 07:04:26,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:26,659 INFO L471 AbstractCegarLoop]: Abstraction has 176 states and 236 transitions. [2024-11-19 07:04:26,659 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.2857142857142856) internal successors, (23), 7 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,659 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 236 transitions. [2024-11-19 07:04:26,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 07:04:26,659 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:26,659 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:26,673 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-19 07:04:26,863 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:26,864 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:26,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:26,865 INFO L85 PathProgramCache]: Analyzing trace with hash -991177183, now seen corresponding path program 1 times [2024-11-19 07:04:26,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:26,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265666892] [2024-11-19 07:04:26,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:26,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:26,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:26,931 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:26,932 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:26,932 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265666892] [2024-11-19 07:04:26,932 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265666892] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:26,932 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:26,932 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:04:26,932 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [199846703] [2024-11-19 07:04:26,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:26,933 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:04:26,933 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:26,933 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:04:26,933 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:26,934 INFO L87 Difference]: Start difference. First operand 176 states and 236 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:26,981 INFO L93 Difference]: Finished difference Result 175 states and 233 transitions. [2024-11-19 07:04:26,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:04:26,982 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 07:04:26,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:26,982 INFO L225 Difference]: With dead ends: 175 [2024-11-19 07:04:26,982 INFO L226 Difference]: Without dead ends: 175 [2024-11-19 07:04:26,983 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:26,983 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 1 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 47 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:26,984 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 198 Invalid, 47 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:26,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2024-11-19 07:04:26,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 175. [2024-11-19 07:04:26,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 136 states have (on average 1.713235294117647) internal successors, (233), 174 states have internal predecessors, (233), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,997 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 233 transitions. [2024-11-19 07:04:26,997 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 233 transitions. Word has length 11 [2024-11-19 07:04:26,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:26,997 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 233 transitions. [2024-11-19 07:04:26,998 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:26,998 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 233 transitions. [2024-11-19 07:04:26,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-19 07:04:26,998 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:26,998 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:26,998 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 07:04:26,998 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:26,999 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:26,999 INFO L85 PathProgramCache]: Analyzing trace with hash -991177182, now seen corresponding path program 1 times [2024-11-19 07:04:26,999 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:26,999 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1466062879] [2024-11-19 07:04:26,999 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:26,999 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:27,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:27,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:27,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:27,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1466062879] [2024-11-19 07:04:27,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1466062879] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:27,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:27,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:04:27,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1643129164] [2024-11-19 07:04:27,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:27,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:04:27,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:27,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:04:27,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:27,090 INFO L87 Difference]: Start difference. First operand 175 states and 233 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:27,136 INFO L93 Difference]: Finished difference Result 174 states and 230 transitions. [2024-11-19 07:04:27,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:04:27,136 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 11 [2024-11-19 07:04:27,136 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:27,137 INFO L225 Difference]: With dead ends: 174 [2024-11-19 07:04:27,137 INFO L226 Difference]: Without dead ends: 174 [2024-11-19 07:04:27,137 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:27,138 INFO L432 NwaCegarLoop]: 120 mSDtfsCounter, 1 mSDsluCounter, 82 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 202 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:27,138 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 202 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:27,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2024-11-19 07:04:27,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 174. [2024-11-19 07:04:27,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 174 states, 136 states have (on average 1.6911764705882353) internal successors, (230), 173 states have internal predecessors, (230), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 174 states to 174 states and 230 transitions. [2024-11-19 07:04:27,149 INFO L78 Accepts]: Start accepts. Automaton has 174 states and 230 transitions. Word has length 11 [2024-11-19 07:04:27,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:27,149 INFO L471 AbstractCegarLoop]: Abstraction has 174 states and 230 transitions. [2024-11-19 07:04:27,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,150 INFO L276 IsEmpty]: Start isEmpty. Operand 174 states and 230 transitions. [2024-11-19 07:04:27,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 07:04:27,150 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:27,150 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:27,150 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 07:04:27,150 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:27,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:27,151 INFO L85 PathProgramCache]: Analyzing trace with hash -661772220, now seen corresponding path program 1 times [2024-11-19 07:04:27,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:27,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1063078237] [2024-11-19 07:04:27,151 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:27,151 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:27,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:27,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:27,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:27,201 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1063078237] [2024-11-19 07:04:27,201 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1063078237] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:27,201 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:27,201 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:04:27,201 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [439006092] [2024-11-19 07:04:27,201 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:27,201 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:04:27,201 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:27,202 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:04:27,202 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:27,202 INFO L87 Difference]: Start difference. First operand 174 states and 230 transitions. Second operand has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,249 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:27,249 INFO L93 Difference]: Finished difference Result 172 states and 224 transitions. [2024-11-19 07:04:27,250 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:04:27,250 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 07:04:27,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:27,250 INFO L225 Difference]: With dead ends: 172 [2024-11-19 07:04:27,251 INFO L226 Difference]: Without dead ends: 172 [2024-11-19 07:04:27,251 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:27,251 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 6 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:27,251 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 183 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:27,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2024-11-19 07:04:27,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 172. [2024-11-19 07:04:27,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 172 states, 136 states have (on average 1.6470588235294117) internal successors, (224), 171 states have internal predecessors, (224), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 172 states to 172 states and 224 transitions. [2024-11-19 07:04:27,255 INFO L78 Accepts]: Start accepts. Automaton has 172 states and 224 transitions. Word has length 12 [2024-11-19 07:04:27,255 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:27,256 INFO L471 AbstractCegarLoop]: Abstraction has 172 states and 224 transitions. [2024-11-19 07:04:27,256 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 6.0) internal successors, (12), 3 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,256 INFO L276 IsEmpty]: Start isEmpty. Operand 172 states and 224 transitions. [2024-11-19 07:04:27,256 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-19 07:04:27,256 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:27,256 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:27,256 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 07:04:27,257 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:27,257 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:27,257 INFO L85 PathProgramCache]: Analyzing trace with hash -661772219, now seen corresponding path program 1 times [2024-11-19 07:04:27,257 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:27,257 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [790493006] [2024-11-19 07:04:27,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:27,257 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:27,372 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:27,372 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:27,372 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [790493006] [2024-11-19 07:04:27,372 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [790493006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:27,372 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:27,372 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 07:04:27,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188677759] [2024-11-19 07:04:27,373 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:27,373 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 07:04:27,373 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:27,374 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 07:04:27,374 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 07:04:27,374 INFO L87 Difference]: Start difference. First operand 172 states and 224 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:27,433 INFO L93 Difference]: Finished difference Result 242 states and 303 transitions. [2024-11-19 07:04:27,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 07:04:27,433 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2024-11-19 07:04:27,433 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:27,435 INFO L225 Difference]: With dead ends: 242 [2024-11-19 07:04:27,435 INFO L226 Difference]: Without dead ends: 242 [2024-11-19 07:04:27,435 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 07:04:27,436 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 111 mSDsluCounter, 392 mSDsCounter, 0 mSdLazyCounter, 61 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 111 SdHoareTripleChecker+Valid, 560 SdHoareTripleChecker+Invalid, 64 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 61 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:27,438 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [111 Valid, 560 Invalid, 64 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 61 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:27,439 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2024-11-19 07:04:27,443 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 175. [2024-11-19 07:04:27,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 175 states, 139 states have (on average 1.6330935251798562) internal successors, (227), 174 states have internal predecessors, (227), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 175 states to 175 states and 227 transitions. [2024-11-19 07:04:27,446 INFO L78 Accepts]: Start accepts. Automaton has 175 states and 227 transitions. Word has length 12 [2024-11-19 07:04:27,447 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:27,447 INFO L471 AbstractCegarLoop]: Abstraction has 175 states and 227 transitions. [2024-11-19 07:04:27,447 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 5 states have internal predecessors, (12), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,447 INFO L276 IsEmpty]: Start isEmpty. Operand 175 states and 227 transitions. [2024-11-19 07:04:27,447 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2024-11-19 07:04:27,450 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:27,450 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:27,450 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-19 07:04:27,450 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:27,451 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:27,451 INFO L85 PathProgramCache]: Analyzing trace with hash -51661170, now seen corresponding path program 1 times [2024-11-19 07:04:27,451 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:27,451 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036695246] [2024-11-19 07:04:27,451 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:27,451 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:27,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:27,557 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:27,558 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:27,558 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036695246] [2024-11-19 07:04:27,558 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036695246] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:04:27,559 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [587147192] [2024-11-19 07:04:27,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:27,559 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:27,559 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:04:27,560 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) [2024-11-19 07:04:27,562 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 07:04:27,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:27,636 INFO L255 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 10 conjuncts are in the unsatisfiable core [2024-11-19 07:04:27,638 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:04:27,668 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:27,669 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:04:27,718 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:27,719 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [587147192] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:04:27,719 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:04:27,719 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6, 6] total 9 [2024-11-19 07:04:27,719 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [111484631] [2024-11-19 07:04:27,719 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:04:27,719 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 07:04:27,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:27,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 07:04:27,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-19 07:04:27,722 INFO L87 Difference]: Start difference. First operand 175 states and 227 transitions. Second operand has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,834 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:27,834 INFO L93 Difference]: Finished difference Result 257 states and 318 transitions. [2024-11-19 07:04:27,835 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 07:04:27,835 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 16 [2024-11-19 07:04:27,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:27,836 INFO L225 Difference]: With dead ends: 257 [2024-11-19 07:04:27,836 INFO L226 Difference]: Without dead ends: 257 [2024-11-19 07:04:27,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 28 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=47, Invalid=109, Unknown=0, NotChecked=0, Total=156 [2024-11-19 07:04:27,838 INFO L432 NwaCegarLoop]: 168 mSDtfsCounter, 116 mSDsluCounter, 948 mSDsCounter, 0 mSdLazyCounter, 122 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 1116 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 122 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:27,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [116 Valid, 1116 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 122 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:27,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-19 07:04:27,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 199. [2024-11-19 07:04:27,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 199 states, 163 states have (on average 1.539877300613497) internal successors, (251), 198 states have internal predecessors, (251), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 199 states to 199 states and 251 transitions. [2024-11-19 07:04:27,844 INFO L78 Accepts]: Start accepts. Automaton has 199 states and 251 transitions. Word has length 16 [2024-11-19 07:04:27,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:27,846 INFO L471 AbstractCegarLoop]: Abstraction has 199 states and 251 transitions. [2024-11-19 07:04:27,846 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.111111111111111) internal successors, (28), 9 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:27,847 INFO L276 IsEmpty]: Start isEmpty. Operand 199 states and 251 transitions. [2024-11-19 07:04:27,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-11-19 07:04:27,847 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:27,847 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1] [2024-11-19 07:04:27,862 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 07:04:28,051 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,SelfDestructingSolverStorable8 [2024-11-19 07:04:28,053 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:28,053 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:28,053 INFO L85 PathProgramCache]: Analyzing trace with hash 1254577850, now seen corresponding path program 2 times [2024-11-19 07:04:28,053 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:28,053 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1681128626] [2024-11-19 07:04:28,053 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 07:04:28,054 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:28,064 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2024-11-19 07:04:28,065 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:04:28,088 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 07:04:28,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:28,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1681128626] [2024-11-19 07:04:28,090 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1681128626] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:28,090 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:28,090 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 07:04:28,090 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082546784] [2024-11-19 07:04:28,090 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:28,090 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 07:04:28,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:28,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 07:04:28,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:28,090 INFO L87 Difference]: Start difference. First operand 199 states and 251 transitions. Second operand has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:28,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:28,123 INFO L93 Difference]: Finished difference Result 197 states and 249 transitions. [2024-11-19 07:04:28,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 07:04:28,124 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-11-19 07:04:28,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:28,124 INFO L225 Difference]: With dead ends: 197 [2024-11-19 07:04:28,124 INFO L226 Difference]: Without dead ends: 197 [2024-11-19 07:04:28,125 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 07:04:28,125 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 77 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 116 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:28,125 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 116 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:28,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 197 states. [2024-11-19 07:04:28,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 197 to 197. [2024-11-19 07:04:28,128 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 197 states, 163 states have (on average 1.5276073619631902) internal successors, (249), 196 states have internal predecessors, (249), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:28,129 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 197 states to 197 states and 249 transitions. [2024-11-19 07:04:28,129 INFO L78 Accepts]: Start accepts. Automaton has 197 states and 249 transitions. Word has length 19 [2024-11-19 07:04:28,129 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:28,129 INFO L471 AbstractCegarLoop]: Abstraction has 197 states and 249 transitions. [2024-11-19 07:04:28,129 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.5) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:28,129 INFO L276 IsEmpty]: Start isEmpty. Operand 197 states and 249 transitions. [2024-11-19 07:04:28,131 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 07:04:28,131 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:28,131 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:28,131 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 07:04:28,131 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:28,131 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:28,131 INFO L85 PathProgramCache]: Analyzing trace with hash 1535685581, now seen corresponding path program 1 times [2024-11-19 07:04:28,132 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:28,132 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1873542286] [2024-11-19 07:04:28,132 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:28,132 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:28,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:28,191 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 07:04:28,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:28,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1873542286] [2024-11-19 07:04:28,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1873542286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:28,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:28,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 07:04:28,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [145230549] [2024-11-19 07:04:28,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:28,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 07:04:28,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:28,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 07:04:28,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 07:04:28,193 INFO L87 Difference]: Start difference. First operand 197 states and 249 transitions. Second operand has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:28,237 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:28,237 INFO L93 Difference]: Finished difference Result 334 states and 430 transitions. [2024-11-19 07:04:28,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 07:04:28,238 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-19 07:04:28,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:28,238 INFO L225 Difference]: With dead ends: 334 [2024-11-19 07:04:28,238 INFO L226 Difference]: Without dead ends: 334 [2024-11-19 07:04:28,239 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2024-11-19 07:04:28,239 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 47 mSDsluCounter, 328 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 442 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:28,239 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 442 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:28,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 334 states. [2024-11-19 07:04:28,245 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 334 to 315. [2024-11-19 07:04:28,246 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 315 states, 281 states have (on average 1.491103202846975) internal successors, (419), 314 states have internal predecessors, (419), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:28,247 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 419 transitions. [2024-11-19 07:04:28,247 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 419 transitions. Word has length 24 [2024-11-19 07:04:28,247 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:28,247 INFO L471 AbstractCegarLoop]: Abstraction has 315 states and 419 transitions. [2024-11-19 07:04:28,247 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.8) internal successors, (14), 5 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:28,247 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 419 transitions. [2024-11-19 07:04:28,249 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-11-19 07:04:28,249 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:28,249 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:28,249 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 07:04:28,249 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:28,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:28,250 INFO L85 PathProgramCache]: Analyzing trace with hash 877276576, now seen corresponding path program 2 times [2024-11-19 07:04:28,250 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:28,250 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1734254498] [2024-11-19 07:04:28,250 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 07:04:28,250 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:28,272 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 07:04:28,272 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:04:28,447 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 07:04:28,447 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:28,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1734254498] [2024-11-19 07:04:28,447 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1734254498] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:04:28,447 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [918801112] [2024-11-19 07:04:28,448 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 07:04:28,448 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:28,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:04:28,449 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) [2024-11-19 07:04:28,451 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 07:04:28,528 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 07:04:28,528 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:04:28,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 21 conjuncts are in the unsatisfiable core [2024-11-19 07:04:28,531 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:04:28,565 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 07:04:28,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 07:04:28,620 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-19 07:04:28,620 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-19 07:04:28,629 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 07:04:28,722 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 07:04:28,723 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 07:04:28,750 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-19 07:04:28,750 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-19 07:04:28,818 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 07:04:28,819 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 07:04:28,831 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-11-19 07:04:28,831 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-11-19 07:04:28,863 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 07:04:28,864 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:04:29,196 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 9 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 07:04:29,196 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [918801112] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:04:29,196 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:04:29,196 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 10 [2024-11-19 07:04:29,196 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192382645] [2024-11-19 07:04:29,196 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:04:29,196 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 07:04:29,196 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:29,197 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 07:04:29,197 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=69, Unknown=0, NotChecked=0, Total=110 [2024-11-19 07:04:29,197 INFO L87 Difference]: Start difference. First operand 315 states and 419 transitions. Second operand has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,321 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:29,321 INFO L93 Difference]: Finished difference Result 313 states and 407 transitions. [2024-11-19 07:04:29,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 07:04:29,322 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2024-11-19 07:04:29,323 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:29,324 INFO L225 Difference]: With dead ends: 313 [2024-11-19 07:04:29,324 INFO L226 Difference]: Without dead ends: 313 [2024-11-19 07:04:29,324 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 41 SyntacticMatches, 3 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2024-11-19 07:04:29,324 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 33 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:29,324 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 243 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:29,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 313 states. [2024-11-19 07:04:29,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 313 to 313. [2024-11-19 07:04:29,328 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 313 states, 281 states have (on average 1.4483985765124556) internal successors, (407), 312 states have internal predecessors, (407), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 313 states to 313 states and 407 transitions. [2024-11-19 07:04:29,329 INFO L78 Accepts]: Start accepts. Automaton has 313 states and 407 transitions. Word has length 24 [2024-11-19 07:04:29,329 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:29,329 INFO L471 AbstractCegarLoop]: Abstraction has 313 states and 407 transitions. [2024-11-19 07:04:29,329 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.2) internal successors, (52), 11 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,329 INFO L276 IsEmpty]: Start isEmpty. Operand 313 states and 407 transitions. [2024-11-19 07:04:29,330 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-19 07:04:29,330 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:29,330 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:29,343 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 07:04:29,533 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:29,534 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:29,534 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:29,534 INFO L85 PathProgramCache]: Analyzing trace with hash 361637955, now seen corresponding path program 1 times [2024-11-19 07:04:29,534 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:29,534 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [148272165] [2024-11-19 07:04:29,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:29,535 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:29,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:29,608 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 07:04:29,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:29,609 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [148272165] [2024-11-19 07:04:29,609 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [148272165] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:29,609 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:29,609 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 07:04:29,610 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523133427] [2024-11-19 07:04:29,610 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:29,611 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 07:04:29,611 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:29,611 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 07:04:29,611 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 07:04:29,611 INFO L87 Difference]: Start difference. First operand 313 states and 407 transitions. Second operand has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:29,645 INFO L93 Difference]: Finished difference Result 332 states and 420 transitions. [2024-11-19 07:04:29,645 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 07:04:29,645 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 25 [2024-11-19 07:04:29,645 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:29,646 INFO L225 Difference]: With dead ends: 332 [2024-11-19 07:04:29,646 INFO L226 Difference]: Without dead ends: 332 [2024-11-19 07:04:29,647 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 07:04:29,647 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 41 mSDsluCounter, 316 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 428 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:29,647 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [41 Valid, 428 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:29,648 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-19 07:04:29,650 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 317. [2024-11-19 07:04:29,651 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 317 states, 285 states have (on average 1.4421052631578948) internal successors, (411), 316 states have internal predecessors, (411), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,651 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 317 states to 317 states and 411 transitions. [2024-11-19 07:04:29,651 INFO L78 Accepts]: Start accepts. Automaton has 317 states and 411 transitions. Word has length 25 [2024-11-19 07:04:29,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:29,652 INFO L471 AbstractCegarLoop]: Abstraction has 317 states and 411 transitions. [2024-11-19 07:04:29,652 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.0) internal successors, (15), 5 states have internal predecessors, (15), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,652 INFO L276 IsEmpty]: Start isEmpty. Operand 317 states and 411 transitions. [2024-11-19 07:04:29,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 07:04:29,652 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:29,652 INFO L215 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:29,652 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 07:04:29,653 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:29,653 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:29,653 INFO L85 PathProgramCache]: Analyzing trace with hash -1674125762, now seen corresponding path program 1 times [2024-11-19 07:04:29,653 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:29,653 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1693867543] [2024-11-19 07:04:29,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:29,653 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:29,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:29,737 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 07:04:29,738 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:29,738 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1693867543] [2024-11-19 07:04:29,738 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1693867543] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:29,738 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:29,738 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 07:04:29,738 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132754007] [2024-11-19 07:04:29,739 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:29,739 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 07:04:29,739 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:29,739 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 07:04:29,739 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:04:29,739 INFO L87 Difference]: Start difference. First operand 317 states and 411 transitions. Second operand has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,793 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:29,793 INFO L93 Difference]: Finished difference Result 340 states and 440 transitions. [2024-11-19 07:04:29,794 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 07:04:29,794 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 26 [2024-11-19 07:04:29,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:29,795 INFO L225 Difference]: With dead ends: 340 [2024-11-19 07:04:29,795 INFO L226 Difference]: Without dead ends: 332 [2024-11-19 07:04:29,795 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:04:29,796 INFO L432 NwaCegarLoop]: 113 mSDtfsCounter, 1 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 81 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 81 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:29,796 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 269 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 81 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:29,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2024-11-19 07:04:29,799 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 330. [2024-11-19 07:04:29,813 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 330 states, 298 states have (on average 1.4429530201342282) internal successors, (430), 329 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 330 states to 330 states and 430 transitions. [2024-11-19 07:04:29,814 INFO L78 Accepts]: Start accepts. Automaton has 330 states and 430 transitions. Word has length 26 [2024-11-19 07:04:29,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:29,814 INFO L471 AbstractCegarLoop]: Abstraction has 330 states and 430 transitions. [2024-11-19 07:04:29,814 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.333333333333333) internal successors, (16), 4 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,814 INFO L276 IsEmpty]: Start isEmpty. Operand 330 states and 430 transitions. [2024-11-19 07:04:29,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 07:04:29,814 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:29,815 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] [2024-11-19 07:04:29,815 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 07:04:29,815 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:29,815 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:29,815 INFO L85 PathProgramCache]: Analyzing trace with hash -981051253, now seen corresponding path program 1 times [2024-11-19 07:04:29,815 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:29,815 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1068931808] [2024-11-19 07:04:29,816 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:29,816 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:29,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:29,890 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 07:04:29,890 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:29,890 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1068931808] [2024-11-19 07:04:29,890 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1068931808] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:29,890 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:29,890 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 07:04:29,890 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680859466] [2024-11-19 07:04:29,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:29,891 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 07:04:29,891 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:29,891 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 07:04:29,891 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 07:04:29,891 INFO L87 Difference]: Start difference. First operand 330 states and 430 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:29,962 INFO L93 Difference]: Finished difference Result 329 states and 424 transitions. [2024-11-19 07:04:29,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 07:04:29,963 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-19 07:04:29,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:29,964 INFO L225 Difference]: With dead ends: 329 [2024-11-19 07:04:29,964 INFO L226 Difference]: Without dead ends: 329 [2024-11-19 07:04:29,965 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-11-19 07:04:29,965 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 28 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:29,965 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 300 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:29,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2024-11-19 07:04:29,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 329. [2024-11-19 07:04:29,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 329 states, 298 states have (on average 1.4228187919463087) internal successors, (424), 328 states have internal predecessors, (424), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 329 states to 329 states and 424 transitions. [2024-11-19 07:04:29,970 INFO L78 Accepts]: Start accepts. Automaton has 329 states and 424 transitions. Word has length 29 [2024-11-19 07:04:29,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:29,971 INFO L471 AbstractCegarLoop]: Abstraction has 329 states and 424 transitions. [2024-11-19 07:04:29,971 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:29,971 INFO L276 IsEmpty]: Start isEmpty. Operand 329 states and 424 transitions. [2024-11-19 07:04:29,972 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2024-11-19 07:04:29,973 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:29,973 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] [2024-11-19 07:04:29,973 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-19 07:04:29,973 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:29,973 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:29,974 INFO L85 PathProgramCache]: Analyzing trace with hash -981051252, now seen corresponding path program 1 times [2024-11-19 07:04:29,974 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:29,974 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918642587] [2024-11-19 07:04:29,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:29,974 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:29,996 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:30,107 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 07:04:30,107 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:30,107 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918642587] [2024-11-19 07:04:30,107 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918642587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:30,107 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:30,108 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 07:04:30,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1967911407] [2024-11-19 07:04:30,108 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:30,108 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 07:04:30,108 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:30,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 07:04:30,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 07:04:30,109 INFO L87 Difference]: Start difference. First operand 329 states and 424 transitions. Second operand has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:30,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:30,169 INFO L93 Difference]: Finished difference Result 328 states and 418 transitions. [2024-11-19 07:04:30,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 07:04:30,172 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 29 [2024-11-19 07:04:30,173 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:30,173 INFO L225 Difference]: With dead ends: 328 [2024-11-19 07:04:30,174 INFO L226 Difference]: Without dead ends: 328 [2024-11-19 07:04:30,174 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 07:04:30,174 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 28 mSDsluCounter, 237 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 334 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:30,174 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 334 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:30,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-19 07:04:30,178 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 328. [2024-11-19 07:04:30,179 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 298 states have (on average 1.4026845637583893) internal successors, (418), 327 states have internal predecessors, (418), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 418 transitions. [2024-11-19 07:04:30,180 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 418 transitions. Word has length 29 [2024-11-19 07:04:30,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:30,180 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 418 transitions. [2024-11-19 07:04:30,180 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.2) internal successors, (21), 6 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:30,180 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 418 transitions. [2024-11-19 07:04:30,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-19 07:04:30,180 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:30,181 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, 1] [2024-11-19 07:04:30,181 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-19 07:04:30,181 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:30,181 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:30,181 INFO L85 PathProgramCache]: Analyzing trace with hash -347817722, now seen corresponding path program 1 times [2024-11-19 07:04:30,181 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:30,181 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1098271293] [2024-11-19 07:04:30,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:30,182 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:30,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:30,479 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 07:04:30,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:30,479 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1098271293] [2024-11-19 07:04:30,480 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1098271293] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:04:30,480 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744531170] [2024-11-19 07:04:30,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:30,480 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:30,480 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:04:30,481 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) [2024-11-19 07:04:30,482 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 07:04:30,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:30,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 261 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-19 07:04:30,569 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:04:30,574 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 07:04:30,606 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 07:04:30,607 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 07:04:30,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 07:04:30,634 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 07:04:30,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 07:04:30,657 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 07:04:30,677 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 07:04:30,677 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-19 07:04:30,715 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 07:04:30,715 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:04:31,069 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 07:04:31,070 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744531170] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:04:31,070 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:04:31,070 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 11 [2024-11-19 07:04:31,070 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1504690779] [2024-11-19 07:04:31,070 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:04:31,071 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 07:04:31,071 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:31,071 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 07:04:31,071 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2024-11-19 07:04:31,072 INFO L87 Difference]: Start difference. First operand 328 states and 418 transitions. Second operand has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:31,174 INFO L93 Difference]: Finished difference Result 327 states and 403 transitions. [2024-11-19 07:04:31,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 07:04:31,175 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 30 [2024-11-19 07:04:31,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:31,175 INFO L225 Difference]: With dead ends: 327 [2024-11-19 07:04:31,176 INFO L226 Difference]: Without dead ends: 327 [2024-11-19 07:04:31,176 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 52 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=54, Invalid=102, Unknown=0, NotChecked=0, Total=156 [2024-11-19 07:04:31,176 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 172 mSDsluCounter, 143 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 227 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:31,176 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 227 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:31,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2024-11-19 07:04:31,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 324. [2024-11-19 07:04:31,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 324 states, 298 states have (on average 1.342281879194631) internal successors, (400), 323 states have internal predecessors, (400), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 324 states to 324 states and 400 transitions. [2024-11-19 07:04:31,181 INFO L78 Accepts]: Start accepts. Automaton has 324 states and 400 transitions. Word has length 30 [2024-11-19 07:04:31,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:31,182 INFO L471 AbstractCegarLoop]: Abstraction has 324 states and 400 transitions. [2024-11-19 07:04:31,182 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 7.0) internal successors, (77), 12 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,182 INFO L276 IsEmpty]: Start isEmpty. Operand 324 states and 400 transitions. [2024-11-19 07:04:31,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-19 07:04:31,183 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:31,183 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, 1, 1, 1, 1] [2024-11-19 07:04:31,197 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-19 07:04:31,383 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable16 [2024-11-19 07:04:31,384 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:31,384 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:31,385 INFO L85 PathProgramCache]: Analyzing trace with hash 1918350099, now seen corresponding path program 1 times [2024-11-19 07:04:31,385 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:31,385 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [356408007] [2024-11-19 07:04:31,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:31,385 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:31,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:31,513 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 07:04:31,513 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:31,513 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [356408007] [2024-11-19 07:04:31,514 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [356408007] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:31,514 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:31,514 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 07:04:31,514 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [13847268] [2024-11-19 07:04:31,514 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:31,514 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 07:04:31,514 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:31,515 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 07:04:31,515 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 07:04:31,515 INFO L87 Difference]: Start difference. First operand 324 states and 400 transitions. Second operand has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,572 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:31,572 INFO L93 Difference]: Finished difference Result 285 states and 330 transitions. [2024-11-19 07:04:31,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 07:04:31,572 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2024-11-19 07:04:31,573 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:31,573 INFO L225 Difference]: With dead ends: 285 [2024-11-19 07:04:31,573 INFO L226 Difference]: Without dead ends: 285 [2024-11-19 07:04:31,573 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2024-11-19 07:04:31,574 INFO L432 NwaCegarLoop]: 106 mSDtfsCounter, 25 mSDsluCounter, 407 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 513 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:31,574 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 513 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:31,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-19 07:04:31,577 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 282. [2024-11-19 07:04:31,577 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 256 states have (on average 1.27734375) internal successors, (327), 281 states have internal predecessors, (327), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,577 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 327 transitions. [2024-11-19 07:04:31,578 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 327 transitions. Word has length 33 [2024-11-19 07:04:31,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:31,578 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 327 transitions. [2024-11-19 07:04:31,578 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.166666666666667) internal successors, (25), 6 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,578 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 327 transitions. [2024-11-19 07:04:31,578 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 07:04:31,578 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:31,579 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:31,579 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 07:04:31,579 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:31,579 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:31,579 INFO L85 PathProgramCache]: Analyzing trace with hash 1545942185, now seen corresponding path program 1 times [2024-11-19 07:04:31,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:31,580 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1903917899] [2024-11-19 07:04:31,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:31,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:31,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:31,765 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 07:04:31,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:31,765 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1903917899] [2024-11-19 07:04:31,766 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1903917899] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:31,766 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:31,766 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 07:04:31,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1224761495] [2024-11-19 07:04:31,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:31,766 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 07:04:31,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:31,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 07:04:31,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-11-19 07:04:31,767 INFO L87 Difference]: Start difference. First operand 282 states and 327 transitions. Second operand has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:31,955 INFO L93 Difference]: Finished difference Result 291 states and 338 transitions. [2024-11-19 07:04:31,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 07:04:31,955 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-19 07:04:31,955 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:31,956 INFO L225 Difference]: With dead ends: 291 [2024-11-19 07:04:31,956 INFO L226 Difference]: Without dead ends: 291 [2024-11-19 07:04:31,956 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=162, Unknown=0, NotChecked=0, Total=210 [2024-11-19 07:04:31,957 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 115 mSDsluCounter, 401 mSDsCounter, 0 mSdLazyCounter, 310 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 115 SdHoareTripleChecker+Valid, 497 SdHoareTripleChecker+Invalid, 316 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 310 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:31,957 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [115 Valid, 497 Invalid, 316 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 310 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:31,957 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2024-11-19 07:04:31,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 283. [2024-11-19 07:04:31,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 258 states have (on average 1.2790697674418605) internal successors, (330), 282 states have internal predecessors, (330), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 330 transitions. [2024-11-19 07:04:31,960 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 330 transitions. Word has length 56 [2024-11-19 07:04:31,960 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:31,960 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 330 transitions. [2024-11-19 07:04:31,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 5.0) internal successors, (40), 9 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:31,961 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 330 transitions. [2024-11-19 07:04:31,961 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 07:04:31,961 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:31,961 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:31,961 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 07:04:31,961 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:31,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:31,962 INFO L85 PathProgramCache]: Analyzing trace with hash 1545942186, now seen corresponding path program 1 times [2024-11-19 07:04:31,962 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:31,962 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [139925726] [2024-11-19 07:04:31,962 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:31,962 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:31,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:32,108 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:32,109 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:32,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [139925726] [2024-11-19 07:04:32,109 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [139925726] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:04:32,109 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [754248120] [2024-11-19 07:04:32,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:32,109 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:32,109 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:04:32,113 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) [2024-11-19 07:04:32,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 07:04:32,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:32,224 INFO L255 TraceCheckSpWp]: Trace formula consists of 344 conjuncts, 14 conjuncts are in the unsatisfiable core [2024-11-19 07:04:32,227 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:04:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:32,277 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:04:32,346 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 27 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-19 07:04:32,346 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [754248120] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 07:04:32,347 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 07:04:32,347 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10, 10] total 15 [2024-11-19 07:04:32,348 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1523890203] [2024-11-19 07:04:32,348 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 07:04:32,348 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-11-19 07:04:32,348 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:32,349 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-11-19 07:04:32,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=151, Unknown=0, NotChecked=0, Total=210 [2024-11-19 07:04:32,349 INFO L87 Difference]: Start difference. First operand 283 states and 330 transitions. Second operand has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:32,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:32,522 INFO L93 Difference]: Finished difference Result 379 states and 424 transitions. [2024-11-19 07:04:32,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-19 07:04:32,523 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-19 07:04:32,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:32,524 INFO L225 Difference]: With dead ends: 379 [2024-11-19 07:04:32,524 INFO L226 Difference]: Without dead ends: 379 [2024-11-19 07:04:32,524 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 102 SyntacticMatches, 5 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 146 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=174, Invalid=426, Unknown=0, NotChecked=0, Total=600 [2024-11-19 07:04:32,525 INFO L432 NwaCegarLoop]: 227 mSDtfsCounter, 306 mSDsluCounter, 970 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1197 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:32,525 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1197 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:32,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-19 07:04:32,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 328. [2024-11-19 07:04:32,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 328 states, 303 states have (on average 1.283828382838284) internal successors, (389), 327 states have internal predecessors, (389), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:32,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 328 states to 328 states and 389 transitions. [2024-11-19 07:04:32,532 INFO L78 Accepts]: Start accepts. Automaton has 328 states and 389 transitions. Word has length 56 [2024-11-19 07:04:32,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:32,532 INFO L471 AbstractCegarLoop]: Abstraction has 328 states and 389 transitions. [2024-11-19 07:04:32,532 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 15 states have (on average 5.133333333333334) internal successors, (77), 15 states have internal predecessors, (77), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:32,532 INFO L276 IsEmpty]: Start isEmpty. Operand 328 states and 389 transitions. [2024-11-19 07:04:32,533 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-19 07:04:32,533 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:32,533 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:32,547 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2024-11-19 07:04:32,736 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:32,737 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:32,737 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:32,737 INFO L85 PathProgramCache]: Analyzing trace with hash -276278870, now seen corresponding path program 2 times [2024-11-19 07:04:32,737 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:32,737 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718675960] [2024-11-19 07:04:32,737 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 07:04:32,737 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:32,771 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 07:04:32,771 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 07:04:33,093 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 07:04:33,093 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:33,093 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718675960] [2024-11-19 07:04:33,093 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [718675960] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:33,093 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:33,094 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 07:04:33,094 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233228895] [2024-11-19 07:04:33,094 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:33,094 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 07:04:33,094 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:33,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 07:04:33,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2024-11-19 07:04:33,095 INFO L87 Difference]: Start difference. First operand 328 states and 389 transitions. Second operand has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:33,343 INFO L93 Difference]: Finished difference Result 372 states and 447 transitions. [2024-11-19 07:04:33,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 07:04:33,344 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 56 [2024-11-19 07:04:33,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:33,345 INFO L225 Difference]: With dead ends: 372 [2024-11-19 07:04:33,345 INFO L226 Difference]: Without dead ends: 372 [2024-11-19 07:04:33,345 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=145, Unknown=0, NotChecked=0, Total=182 [2024-11-19 07:04:33,346 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 134 mSDsluCounter, 519 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 615 SdHoareTripleChecker+Invalid, 323 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:33,346 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 615 Invalid, 323 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 07:04:33,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 372 states. [2024-11-19 07:04:33,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 372 to 361. [2024-11-19 07:04:33,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 361 states, 336 states have (on average 1.306547619047619) internal successors, (439), 360 states have internal predecessors, (439), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 361 states to 361 states and 439 transitions. [2024-11-19 07:04:33,352 INFO L78 Accepts]: Start accepts. Automaton has 361 states and 439 transitions. Word has length 56 [2024-11-19 07:04:33,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:33,353 INFO L471 AbstractCegarLoop]: Abstraction has 361 states and 439 transitions. [2024-11-19 07:04:33,353 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 4.875) internal successors, (39), 9 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,353 INFO L276 IsEmpty]: Start isEmpty. Operand 361 states and 439 transitions. [2024-11-19 07:04:33,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 07:04:33,353 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:33,353 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:33,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-19 07:04:33,354 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:33,354 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:33,354 INFO L85 PathProgramCache]: Analyzing trace with hash 25314791, now seen corresponding path program 1 times [2024-11-19 07:04:33,354 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:33,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1569411437] [2024-11-19 07:04:33,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:33,355 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:33,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:33,497 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-19 07:04:33,497 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:33,497 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1569411437] [2024-11-19 07:04:33,497 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1569411437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:33,497 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:33,497 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-19 07:04:33,498 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661712992] [2024-11-19 07:04:33,498 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:33,498 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 07:04:33,498 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:33,498 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 07:04:33,498 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-19 07:04:33,499 INFO L87 Difference]: Start difference. First operand 361 states and 439 transitions. Second operand has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,565 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:33,565 INFO L93 Difference]: Finished difference Result 375 states and 450 transitions. [2024-11-19 07:04:33,565 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 07:04:33,565 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-19 07:04:33,566 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:33,566 INFO L225 Difference]: With dead ends: 375 [2024-11-19 07:04:33,567 INFO L226 Difference]: Without dead ends: 375 [2024-11-19 07:04:33,567 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 07:04:33,567 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 52 mSDsluCounter, 458 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 555 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:33,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [52 Valid, 555 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:33,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 375 states. [2024-11-19 07:04:33,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 375 to 366. [2024-11-19 07:04:33,571 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 366 states, 341 states have (on average 1.3020527859237536) internal successors, (444), 365 states have internal predecessors, (444), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 366 states to 366 states and 444 transitions. [2024-11-19 07:04:33,572 INFO L78 Accepts]: Start accepts. Automaton has 366 states and 444 transitions. Word has length 57 [2024-11-19 07:04:33,572 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:33,572 INFO L471 AbstractCegarLoop]: Abstraction has 366 states and 444 transitions. [2024-11-19 07:04:33,572 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.285714285714286) internal successors, (37), 7 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,572 INFO L276 IsEmpty]: Start isEmpty. Operand 366 states and 444 transitions. [2024-11-19 07:04:33,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-19 07:04:33,573 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:33,573 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:33,573 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-19 07:04:33,573 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr40ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:33,574 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:33,574 INFO L85 PathProgramCache]: Analyzing trace with hash 25335514, now seen corresponding path program 1 times [2024-11-19 07:04:33,574 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:33,574 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1037546106] [2024-11-19 07:04:33,574 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:33,574 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:33,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:33,632 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2024-11-19 07:04:33,633 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:33,633 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1037546106] [2024-11-19 07:04:33,633 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1037546106] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:33,633 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:33,633 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-19 07:04:33,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [381788818] [2024-11-19 07:04:33,633 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:33,633 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 07:04:33,633 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:33,634 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 07:04:33,634 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 07:04:33,634 INFO L87 Difference]: Start difference. First operand 366 states and 444 transitions. Second operand has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:33,662 INFO L93 Difference]: Finished difference Result 413 states and 495 transitions. [2024-11-19 07:04:33,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 07:04:33,663 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 57 [2024-11-19 07:04:33,663 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:33,664 INFO L225 Difference]: With dead ends: 413 [2024-11-19 07:04:33,664 INFO L226 Difference]: Without dead ends: 413 [2024-11-19 07:04:33,664 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-19 07:04:33,664 INFO L432 NwaCegarLoop]: 97 mSDtfsCounter, 97 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 97 SdHoareTripleChecker+Valid, 248 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 [2024-11-19 07:04:33,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [97 Valid, 248 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 07:04:33,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 413 states. [2024-11-19 07:04:33,668 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 413 to 364. [2024-11-19 07:04:33,668 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 364 states, 339 states have (on average 1.2979351032448379) internal successors, (440), 363 states have internal predecessors, (440), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 364 states to 364 states and 440 transitions. [2024-11-19 07:04:33,669 INFO L78 Accepts]: Start accepts. Automaton has 364 states and 440 transitions. Word has length 57 [2024-11-19 07:04:33,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:33,669 INFO L471 AbstractCegarLoop]: Abstraction has 364 states and 440 transitions. [2024-11-19 07:04:33,669 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 9.25) internal successors, (37), 4 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,669 INFO L276 IsEmpty]: Start isEmpty. Operand 364 states and 440 transitions. [2024-11-19 07:04:33,670 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-19 07:04:33,670 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:33,670 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:33,670 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-19 07:04:33,670 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr41ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:33,670 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:33,670 INFO L85 PathProgramCache]: Analyzing trace with hash 784758042, now seen corresponding path program 1 times [2024-11-19 07:04:33,670 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:33,670 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1743253523] [2024-11-19 07:04:33,671 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:33,671 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:33,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:33,840 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2024-11-19 07:04:33,840 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:33,840 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1743253523] [2024-11-19 07:04:33,841 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1743253523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:33,841 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:33,841 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 07:04:33,841 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [295799072] [2024-11-19 07:04:33,841 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:33,841 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 07:04:33,841 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:33,842 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 07:04:33,842 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-19 07:04:33,842 INFO L87 Difference]: Start difference. First operand 364 states and 440 transitions. Second operand has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:33,954 INFO L93 Difference]: Finished difference Result 368 states and 436 transitions. [2024-11-19 07:04:33,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 07:04:33,954 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 58 [2024-11-19 07:04:33,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:33,955 INFO L225 Difference]: With dead ends: 368 [2024-11-19 07:04:33,955 INFO L226 Difference]: Without dead ends: 368 [2024-11-19 07:04:33,955 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2024-11-19 07:04:33,956 INFO L432 NwaCegarLoop]: 111 mSDtfsCounter, 128 mSDsluCounter, 549 mSDsCounter, 0 mSdLazyCounter, 163 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 660 SdHoareTripleChecker+Invalid, 164 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 163 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:33,956 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 660 Invalid, 164 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 163 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 07:04:33,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 368 states. [2024-11-19 07:04:33,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 368 to 359. [2024-11-19 07:04:33,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 359 states, 334 states have (on average 1.2874251497005988) internal successors, (430), 358 states have internal predecessors, (430), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 359 states to 359 states and 430 transitions. [2024-11-19 07:04:33,961 INFO L78 Accepts]: Start accepts. Automaton has 359 states and 430 transitions. Word has length 58 [2024-11-19 07:04:33,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:33,961 INFO L471 AbstractCegarLoop]: Abstraction has 359 states and 430 transitions. [2024-11-19 07:04:33,961 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 5.125) internal successors, (41), 8 states have internal predecessors, (41), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:33,961 INFO L276 IsEmpty]: Start isEmpty. Operand 359 states and 430 transitions. [2024-11-19 07:04:33,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 07:04:33,962 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:33,962 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:33,962 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 07:04:33,962 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:33,962 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:33,962 INFO L85 PathProgramCache]: Analyzing trace with hash -1466385390, now seen corresponding path program 1 times [2024-11-19 07:04:33,963 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:33,963 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [324801848] [2024-11-19 07:04:33,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:33,963 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:33,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:34,639 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 17 proven. 0 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2024-11-19 07:04:34,639 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:34,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [324801848] [2024-11-19 07:04:34,639 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [324801848] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:34,640 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:34,640 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 07:04:34,640 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401604127] [2024-11-19 07:04:34,640 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:34,640 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 07:04:34,640 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:34,641 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 07:04:34,641 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-19 07:04:34,641 INFO L87 Difference]: Start difference. First operand 359 states and 430 transitions. Second operand has 17 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:35,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:35,049 INFO L93 Difference]: Finished difference Result 493 states and 605 transitions. [2024-11-19 07:04:35,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2024-11-19 07:04:35,050 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-19 07:04:35,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:35,051 INFO L225 Difference]: With dead ends: 493 [2024-11-19 07:04:35,051 INFO L226 Difference]: Without dead ends: 493 [2024-11-19 07:04:35,051 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=74, Invalid=478, Unknown=0, NotChecked=0, Total=552 [2024-11-19 07:04:35,052 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 121 mSDsluCounter, 737 mSDsCounter, 0 mSdLazyCounter, 655 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 121 SdHoareTripleChecker+Valid, 821 SdHoareTripleChecker+Invalid, 660 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 655 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:35,052 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [121 Valid, 821 Invalid, 660 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 655 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 07:04:35,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 493 states. [2024-11-19 07:04:35,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 493 to 417. [2024-11-19 07:04:35,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 392 states have (on average 1.3035714285714286) internal successors, (511), 416 states have internal predecessors, (511), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:35,062 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 511 transitions. [2024-11-19 07:04:35,063 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 511 transitions. Word has length 59 [2024-11-19 07:04:35,063 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:35,063 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 511 transitions. [2024-11-19 07:04:35,063 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.75) internal successors, (44), 17 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:35,063 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 511 transitions. [2024-11-19 07:04:35,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 07:04:35,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:35,064 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:35,064 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 07:04:35,064 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:35,064 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:35,065 INFO L85 PathProgramCache]: Analyzing trace with hash -1466385389, now seen corresponding path program 1 times [2024-11-19 07:04:35,065 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:35,065 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [321690364] [2024-11-19 07:04:35,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:35,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:35,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:35,936 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 21 proven. 0 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2024-11-19 07:04:35,937 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:35,937 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [321690364] [2024-11-19 07:04:35,937 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [321690364] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 07:04:35,937 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 07:04:35,937 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-19 07:04:35,937 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [349675925] [2024-11-19 07:04:35,937 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 07:04:35,937 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 07:04:35,937 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 07:04:35,938 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 07:04:35,938 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=233, Unknown=0, NotChecked=0, Total=272 [2024-11-19 07:04:35,938 INFO L87 Difference]: Start difference. First operand 417 states and 511 transitions. Second operand has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:36,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 07:04:36,580 INFO L93 Difference]: Finished difference Result 592 states and 723 transitions. [2024-11-19 07:04:36,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2024-11-19 07:04:36,581 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 59 [2024-11-19 07:04:36,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 07:04:36,583 INFO L225 Difference]: With dead ends: 592 [2024-11-19 07:04:36,583 INFO L226 Difference]: Without dead ends: 592 [2024-11-19 07:04:36,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 188 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=125, Invalid=867, Unknown=0, NotChecked=0, Total=992 [2024-11-19 07:04:36,584 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 164 mSDsluCounter, 687 mSDsCounter, 0 mSdLazyCounter, 661 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 164 SdHoareTripleChecker+Valid, 775 SdHoareTripleChecker+Invalid, 669 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 661 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 07:04:36,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [164 Valid, 775 Invalid, 669 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 661 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 07:04:36,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 592 states. [2024-11-19 07:04:36,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 592 to 417. [2024-11-19 07:04:36,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 417 states, 392 states have (on average 1.2984693877551021) internal successors, (509), 416 states have internal predecessors, (509), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:36,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 509 transitions. [2024-11-19 07:04:36,591 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 509 transitions. Word has length 59 [2024-11-19 07:04:36,591 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 07:04:36,591 INFO L471 AbstractCegarLoop]: Abstraction has 417 states and 509 transitions. [2024-11-19 07:04:36,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.875) internal successors, (46), 17 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-19 07:04:36,591 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 509 transitions. [2024-11-19 07:04:36,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 07:04:36,592 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 07:04:36,592 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 07:04:36,592 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-19 07:04:36,592 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 39 more)] === [2024-11-19 07:04:36,592 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 07:04:36,592 INFO L85 PathProgramCache]: Analyzing trace with hash -974651946, now seen corresponding path program 1 times [2024-11-19 07:04:36,593 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 07:04:36,593 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1342712400] [2024-11-19 07:04:36,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:36,593 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 07:04:36,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:37,770 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 12 proven. 16 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 07:04:37,771 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 07:04:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1342712400] [2024-11-19 07:04:37,771 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1342712400] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 07:04:37,771 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1548666750] [2024-11-19 07:04:37,771 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 07:04:37,771 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 07:04:37,771 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 07:04:37,773 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) [2024-11-19 07:04:37,775 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 07:04:37,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 07:04:37,911 INFO L255 TraceCheckSpWp]: Trace formula consists of 380 conjuncts, 88 conjuncts are in the unsatisfiable core [2024-11-19 07:04:37,917 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 07:04:37,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-19 07:04:38,027 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-19 07:04:38,029 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-11-19 07:04:38,079 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-11-19 07:04:38,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-11-19 07:04:38,229 INFO L349 Elim1Store]: treesize reduction 40, result has 32.2 percent of original size [2024-11-19 07:04:38,229 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 24 treesize of output 28 [2024-11-19 07:04:38,305 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 07:04:38,577 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 57 treesize of output 29 [2024-11-19 07:04:38,596 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 07:04:38,687 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-19 07:04:38,687 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 35 [2024-11-19 07:04:38,700 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 07:04:38,835 INFO L349 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2024-11-19 07:04:38,836 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 65 treesize of output 35 [2024-11-19 07:04:38,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 11 [2024-11-19 07:04:38,960 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-11-19 07:04:38,964 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2024-11-19 07:04:39,403 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 07:04:39,404 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 105 treesize of output 65 [2024-11-19 07:04:39,407 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 07:04:39,408 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 07:04:39,408 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-19 07:04:39,540 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2024-11-19 07:04:39,676 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 07:04:39,676 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 29 [2024-11-19 07:04:39,784 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 22 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2024-11-19 07:04:39,784 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 07:04:40,234 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 209 treesize of output 197 [2024-11-19 07:04:40,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 337 treesize of output 313 [2024-11-19 07:05:08,784 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 07:05:08,785 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 185 [2024-11-19 07:05:08,863 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:08,942 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,057 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,091 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,140 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 07:05:09,141 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 185 [2024-11-19 07:05:09,187 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,222 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,269 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 07:05:09,269 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 185 [2024-11-19 07:05:09,348 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,428 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,465 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,504 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 07:05:09,504 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 185 [2024-11-19 07:05:09,554 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 07:05:09,555 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 195 treesize of output 185 [2024-11-19 07:05:09,617 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:09,674 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 174 treesize of output 162 [2024-11-19 07:05:15,816 INFO L349 Elim1Store]: treesize reduction 4, result has 96.0 percent of original size [2024-11-19 07:05:15,817 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 10 case distinctions, treesize of input 52828 treesize of output 50788