./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0214_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 803cd42f Calling Ultimate with: /root/.sdkman/candidates/java/current/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-ext-properties/test-0214_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 8cac36e956b24d42ea840a07609fb159882a2e76b1195da25a4d4343e0b31026 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-803cd42-m [2024-11-22 18:38:26,390 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-22 18:38:26,456 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-22 18:38:26,462 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-22 18:38:26,464 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-22 18:38:26,480 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-22 18:38:26,481 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-22 18:38:26,481 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-22 18:38:26,481 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-22 18:38:26,482 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-22 18:38:26,482 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-22 18:38:26,482 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-22 18:38:26,483 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-22 18:38:26,483 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-22 18:38:26,483 INFO L153 SettingsManager]: * Use SBE=true [2024-11-22 18:38:26,483 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-22 18:38:26,484 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-22 18:38:26,484 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-22 18:38:26,484 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-22 18:38:26,484 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-22 18:38:26,485 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-22 18:38:26,489 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-22 18:38:26,489 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-22 18:38:26,489 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-22 18:38:26,489 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-22 18:38:26,489 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-22 18:38:26,490 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-22 18:38:26,490 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-22 18:38:26,490 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-22 18:38:26,490 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-22 18:38:26,491 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-22 18:38:26,491 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-22 18:38:26,491 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-22 18:38:26,491 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:38:26,491 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-22 18:38:26,492 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-22 18:38:26,492 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-22 18:38:26,492 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-22 18:38:26,492 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-22 18:38:26,492 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-22 18:38:26,493 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-22 18:38:26,494 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-22 18:38:26,494 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8cac36e956b24d42ea840a07609fb159882a2e76b1195da25a4d4343e0b31026 [2024-11-22 18:38:26,704 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-22 18:38:26,738 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-22 18:38:26,744 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-22 18:38:26,745 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-22 18:38:26,749 INFO L274 PluginConnector]: CDTParser initialized [2024-11-22 18:38:26,751 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0214_1.i [2024-11-22 18:38:28,052 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-22 18:38:28,310 INFO L384 CDTParser]: Found 1 translation units. [2024-11-22 18:38:28,310 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0214_1.i [2024-11-22 18:38:28,323 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3a9c7e5/b4057ea26bb34e3d84c36baec5fbb1e8/FLAG93df02829 [2024-11-22 18:38:28,636 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9a3a9c7e5/b4057ea26bb34e3d84c36baec5fbb1e8 [2024-11-22 18:38:28,638 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-22 18:38:28,639 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-22 18:38:28,640 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-22 18:38:28,640 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-22 18:38:28,647 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-22 18:38:28,648 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:38:28" (1/1) ... [2024-11-22 18:38:28,650 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ac5d16c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:28, skipping insertion in model container [2024-11-22 18:38:28,650 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.11 06:38:28" (1/1) ... [2024-11-22 18:38:28,691 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-22 18:38:29,038 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:38:29,051 INFO L200 MainTranslator]: Completed pre-run [2024-11-22 18:38:29,111 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-22 18:38:29,179 INFO L204 MainTranslator]: Completed translation [2024-11-22 18:38:29,180 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29 WrapperNode [2024-11-22 18:38:29,180 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-22 18:38:29,181 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-22 18:38:29,181 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-22 18:38:29,181 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-22 18:38:29,196 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,241 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,280 INFO L138 Inliner]: procedures = 181, calls = 43, calls flagged for inlining = 8, calls inlined = 8, statements flattened = 220 [2024-11-22 18:38:29,284 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-22 18:38:29,285 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-22 18:38:29,285 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-22 18:38:29,285 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-22 18:38:29,302 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,303 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,306 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,337 INFO L175 MemorySlicer]: Split 27 memory accesses to 3 slices as follows [2, 7, 18]. 67 percent of accesses are in the largest equivalence class. The 4 initializations are split as follows [2, 0, 2]. The 11 writes are split as follows [0, 5, 6]. [2024-11-22 18:38:29,338 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,339 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,350 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,357 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,363 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,364 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,371 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-22 18:38:29,371 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-22 18:38:29,371 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-22 18:38:29,371 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-22 18:38:29,372 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (1/1) ... [2024-11-22 18:38:29,378 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-22 18:38:29,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:29,403 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) [2024-11-22 18:38:29,405 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 [2024-11-22 18:38:29,438 INFO L130 BoogieDeclarations]: Found specification of procedure rand_end_point [2024-11-22 18:38:29,438 INFO L138 BoogieDeclarations]: Found implementation of procedure rand_end_point [2024-11-22 18:38:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-22 18:38:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-22 18:38:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-22 18:38:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-22 18:38:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-22 18:38:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-22 18:38:29,439 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-22 18:38:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-22 18:38:29,440 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-22 18:38:29,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-22 18:38:29,441 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-22 18:38:29,441 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-22 18:38:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-22 18:38:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-22 18:38:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-22 18:38:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-22 18:38:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-22 18:38:29,442 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-22 18:38:29,443 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-22 18:38:29,443 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-22 18:38:29,543 INFO L238 CfgBuilder]: Building ICFG [2024-11-22 18:38:29,545 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-22 18:38:29,818 INFO L? ?]: Removed 157 outVars from TransFormulas that were not future-live. [2024-11-22 18:38:29,818 INFO L287 CfgBuilder]: Performing block encoding [2024-11-22 18:38:29,830 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-22 18:38:29,830 INFO L316 CfgBuilder]: Removed 4 assume(true) statements. [2024-11-22 18:38:29,830 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:38:29 BoogieIcfgContainer [2024-11-22 18:38:29,830 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-22 18:38:29,832 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-22 18:38:29,832 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-22 18:38:29,835 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-22 18:38:29,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.11 06:38:28" (1/3) ... [2024-11-22 18:38:29,835 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3a5432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:38:29, skipping insertion in model container [2024-11-22 18:38:29,835 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.11 06:38:29" (2/3) ... [2024-11-22 18:38:29,836 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3c3a5432 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.11 06:38:29, skipping insertion in model container [2024-11-22 18:38:29,836 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.11 06:38:29" (3/3) ... [2024-11-22 18:38:29,837 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0214_1.i [2024-11-22 18:38:29,849 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-22 18:38:29,849 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 57 error locations. [2024-11-22 18:38:29,891 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-22 18:38:29,897 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;@1bf2696a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-22 18:38:29,897 INFO L334 AbstractCegarLoop]: Starting to check reachability of 57 error locations. [2024-11-22 18:38:29,904 INFO L276 IsEmpty]: Start isEmpty. Operand has 147 states, 86 states have (on average 1.941860465116279) internal successors, (167), 143 states have internal predecessors, (167), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:29,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-22 18:38:29,909 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:29,910 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-22 18:38:29,910 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:29,914 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:29,915 INFO L85 PathProgramCache]: Analyzing trace with hash 1044165707, now seen corresponding path program 1 times [2024-11-22 18:38:29,921 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:29,924 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [63964979] [2024-11-22 18:38:29,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:29,924 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:30,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:30,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:30,062 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:30,062 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [63964979] [2024-11-22 18:38:30,063 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [63964979] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:30,063 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:30,063 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:38:30,065 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383707746] [2024-11-22 18:38:30,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:30,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-22 18:38:30,070 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:30,092 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-22 18:38:30,093 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-22 18:38:30,095 INFO L87 Difference]: Start difference. First operand has 147 states, 86 states have (on average 1.941860465116279) internal successors, (167), 143 states have internal predecessors, (167), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-22 18:38:30,119 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:30,120 INFO L93 Difference]: Finished difference Result 147 states and 166 transitions. [2024-11-22 18:38:30,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-22 18:38:30,122 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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 6 [2024-11-22 18:38:30,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:30,129 INFO L225 Difference]: With dead ends: 147 [2024-11-22 18:38:30,129 INFO L226 Difference]: Without dead ends: 144 [2024-11-22 18:38:30,131 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 [2024-11-22 18:38:30,133 INFO L432 NwaCegarLoop]: 166 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, 166 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 [2024-11-22 18:38:30,134 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 166 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:30,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-22 18:38:30,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-22 18:38:30,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 84 states have (on average 1.880952380952381) internal successors, (158), 140 states have internal predecessors, (158), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:30,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 162 transitions. [2024-11-22 18:38:30,182 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 162 transitions. Word has length 6 [2024-11-22 18:38:30,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:30,182 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 162 transitions. [2024-11-22 18:38:30,183 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 3.0) internal successors, (6), 2 states have internal predecessors, (6), 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) [2024-11-22 18:38:30,183 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 162 transitions. [2024-11-22 18:38:30,184 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 18:38:30,184 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:30,184 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:30,185 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-22 18:38:30,185 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:30,186 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:30,186 INFO L85 PathProgramCache]: Analyzing trace with hash 594325856, now seen corresponding path program 1 times [2024-11-22 18:38:30,186 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:30,187 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [366314844] [2024-11-22 18:38:30,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:30,188 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:30,265 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:30,265 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:30,265 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [366314844] [2024-11-22 18:38:30,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [366314844] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:30,266 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:30,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:30,266 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1030606567] [2024-11-22 18:38:30,266 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:30,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:30,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:30,269 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:30,269 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:30,269 INFO L87 Difference]: Start difference. First operand 144 states and 162 transitions. Second operand has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-22 18:38:30,317 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:30,318 INFO L93 Difference]: Finished difference Result 286 states and 321 transitions. [2024-11-22 18:38:30,318 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:30,318 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-22 18:38:30,319 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:30,320 INFO L225 Difference]: With dead ends: 286 [2024-11-22 18:38:30,320 INFO L226 Difference]: Without dead ends: 286 [2024-11-22 18:38:30,321 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:30,322 INFO L432 NwaCegarLoop]: 156 mSDtfsCounter, 158 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 463 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:30,322 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 463 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:30,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 286 states. [2024-11-22 18:38:30,330 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 286 to 146. [2024-11-22 18:38:30,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 146 states, 86 states have (on average 1.8604651162790697) internal successors, (160), 142 states have internal predecessors, (160), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:30,332 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 146 states to 146 states and 164 transitions. [2024-11-22 18:38:30,332 INFO L78 Accepts]: Start accepts. Automaton has 146 states and 164 transitions. Word has length 8 [2024-11-22 18:38:30,332 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:30,333 INFO L471 AbstractCegarLoop]: Abstraction has 146 states and 164 transitions. [2024-11-22 18:38:30,333 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.0) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-22 18:38:30,333 INFO L276 IsEmpty]: Start isEmpty. Operand 146 states and 164 transitions. [2024-11-22 18:38:30,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 18:38:30,333 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:30,334 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:30,334 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-22 18:38:30,334 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:30,334 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:30,335 INFO L85 PathProgramCache]: Analyzing trace with hash 592478814, now seen corresponding path program 1 times [2024-11-22 18:38:30,335 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:30,335 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [212957286] [2024-11-22 18:38:30,335 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:30,335 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:30,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:30,507 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:30,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:30,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [212957286] [2024-11-22 18:38:30,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [212957286] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:30,509 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:30,509 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:38:30,509 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1477458360] [2024-11-22 18:38:30,509 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:30,510 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:30,510 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:30,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:30,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:30,511 INFO L87 Difference]: Start difference. First operand 146 states and 164 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-22 18:38:30,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:30,657 INFO L93 Difference]: Finished difference Result 251 states and 282 transitions. [2024-11-22 18:38:30,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:30,657 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-22 18:38:30,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:30,659 INFO L225 Difference]: With dead ends: 251 [2024-11-22 18:38:30,659 INFO L226 Difference]: Without dead ends: 251 [2024-11-22 18:38:30,659 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:30,660 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 112 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 112 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 135 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:30,664 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [112 Valid, 349 Invalid, 135 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:30,665 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 251 states. [2024-11-22 18:38:30,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 251 to 198. [2024-11-22 18:38:30,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 198 states, 135 states have (on average 1.8592592592592592) internal successors, (251), 192 states have internal predecessors, (251), 4 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 18:38:30,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 259 transitions. [2024-11-22 18:38:30,683 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 259 transitions. Word has length 8 [2024-11-22 18:38:30,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:30,683 INFO L471 AbstractCegarLoop]: Abstraction has 198 states and 259 transitions. [2024-11-22 18:38:30,684 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-22 18:38:30,684 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 259 transitions. [2024-11-22 18:38:30,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 18:38:30,684 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:30,684 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:30,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-11-22 18:38:30,685 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:30,685 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:30,685 INFO L85 PathProgramCache]: Analyzing trace with hash 592478813, now seen corresponding path program 1 times [2024-11-22 18:38:30,685 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:30,686 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [784917606] [2024-11-22 18:38:30,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:30,686 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:30,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:30,747 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:30,747 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:30,747 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [784917606] [2024-11-22 18:38:30,747 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [784917606] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:30,748 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:30,748 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-11-22 18:38:30,748 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208015947] [2024-11-22 18:38:30,748 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:30,748 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:38:30,749 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:30,749 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:38:30,749 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:38:30,749 INFO L87 Difference]: Start difference. First operand 198 states and 259 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-22 18:38:30,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:30,884 INFO L93 Difference]: Finished difference Result 381 states and 498 transitions. [2024-11-22 18:38:30,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:38:30,885 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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 8 [2024-11-22 18:38:30,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:30,888 INFO L225 Difference]: With dead ends: 381 [2024-11-22 18:38:30,888 INFO L226 Difference]: Without dead ends: 381 [2024-11-22 18:38:30,888 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:38:30,889 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 142 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 113 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 209 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 113 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:30,890 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 209 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 113 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:30,890 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 381 states. [2024-11-22 18:38:30,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 381 to 280. [2024-11-22 18:38:30,899 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 211 states have (on average 1.8056872037914693) internal successors, (381), 269 states have internal predecessors, (381), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:30,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 397 transitions. [2024-11-22 18:38:30,901 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 397 transitions. Word has length 8 [2024-11-22 18:38:30,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:30,901 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 397 transitions. [2024-11-22 18:38:30,901 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 2 states have internal predecessors, (8), 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) [2024-11-22 18:38:30,901 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 397 transitions. [2024-11-22 18:38:30,901 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-11-22 18:38:30,901 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:30,901 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:30,901 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-11-22 18:38:30,902 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:30,902 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:30,902 INFO L85 PathProgramCache]: Analyzing trace with hash 592478876, now seen corresponding path program 1 times [2024-11-22 18:38:30,902 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:30,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [730858629] [2024-11-22 18:38:30,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:30,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:30,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:30,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:30,986 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:30,986 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [730858629] [2024-11-22 18:38:30,986 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [730858629] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:30,986 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:30,986 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:38:30,987 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131126270] [2024-11-22 18:38:30,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:30,987 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:30,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:30,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:30,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:30,988 INFO L87 Difference]: Start difference. First operand 280 states and 397 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-22 18:38:31,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:31,098 INFO L93 Difference]: Finished difference Result 336 states and 425 transitions. [2024-11-22 18:38:31,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:31,099 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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 8 [2024-11-22 18:38:31,099 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:31,100 INFO L225 Difference]: With dead ends: 336 [2024-11-22 18:38:31,100 INFO L226 Difference]: Without dead ends: 336 [2024-11-22 18:38:31,100 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:31,101 INFO L432 NwaCegarLoop]: 133 mSDtfsCounter, 110 mSDsluCounter, 217 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 350 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:31,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 350 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:31,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 336 states. [2024-11-22 18:38:31,108 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 336 to 280. [2024-11-22 18:38:31,109 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 211 states have (on average 1.8056872037914693) internal successors, (381), 269 states have internal predecessors, (381), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:31,110 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 397 transitions. [2024-11-22 18:38:31,110 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 397 transitions. Word has length 8 [2024-11-22 18:38:31,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:31,110 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 397 transitions. [2024-11-22 18:38:31,110 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 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) [2024-11-22 18:38:31,111 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 397 transitions. [2024-11-22 18:38:31,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2024-11-22 18:38:31,111 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:31,111 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:31,111 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-22 18:38:31,112 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:31,112 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:31,112 INFO L85 PathProgramCache]: Analyzing trace with hash -1779058665, now seen corresponding path program 1 times [2024-11-22 18:38:31,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:31,112 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [294863594] [2024-11-22 18:38:31,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:31,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:31,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:31,159 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:31,159 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:31,159 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [294863594] [2024-11-22 18:38:31,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [294863594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:31,160 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:31,160 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:31,160 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1973483274] [2024-11-22 18:38:31,160 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:31,160 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:38:31,160 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:31,161 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:38:31,161 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:38:31,161 INFO L87 Difference]: Start difference. First operand 280 states and 397 transitions. Second operand has 3 states, 3 states have (on average 3.6666666666666665) 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) [2024-11-22 18:38:31,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:31,176 INFO L93 Difference]: Finished difference Result 380 states and 495 transitions. [2024-11-22 18:38:31,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:38:31,177 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.6666666666666665) 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 [2024-11-22 18:38:31,177 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:31,178 INFO L225 Difference]: With dead ends: 380 [2024-11-22 18:38:31,178 INFO L226 Difference]: Without dead ends: 380 [2024-11-22 18:38:31,178 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 [2024-11-22 18:38:31,179 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 130 mSDsluCounter, 155 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 314 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:31,179 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 314 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:31,180 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2024-11-22 18:38:31,190 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 282. [2024-11-22 18:38:31,193 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 282 states, 213 states have (on average 1.7887323943661972) internal successors, (381), 271 states have internal predecessors, (381), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:31,194 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 282 states to 282 states and 397 transitions. [2024-11-22 18:38:31,195 INFO L78 Accepts]: Start accepts. Automaton has 282 states and 397 transitions. Word has length 11 [2024-11-22 18:38:31,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:31,195 INFO L471 AbstractCegarLoop]: Abstraction has 282 states and 397 transitions. [2024-11-22 18:38:31,195 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.6666666666666665) 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) [2024-11-22 18:38:31,195 INFO L276 IsEmpty]: Start isEmpty. Operand 282 states and 397 transitions. [2024-11-22 18:38:31,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2024-11-22 18:38:31,197 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:31,197 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:31,197 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-22 18:38:31,197 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:31,198 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:31,198 INFO L85 PathProgramCache]: Analyzing trace with hash 683754949, now seen corresponding path program 1 times [2024-11-22 18:38:31,198 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:31,198 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [263990587] [2024-11-22 18:38:31,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:31,198 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:31,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:31,222 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:31,222 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:31,222 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [263990587] [2024-11-22 18:38:31,222 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [263990587] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:31,222 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:31,222 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:38:31,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1062813309] [2024-11-22 18:38:31,223 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:31,223 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:38:31,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:31,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:38:31,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:38:31,224 INFO L87 Difference]: Start difference. First operand 282 states and 397 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) [2024-11-22 18:38:31,302 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:31,303 INFO L93 Difference]: Finished difference Result 337 states and 448 transitions. [2024-11-22 18:38:31,303 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:38:31,303 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 [2024-11-22 18:38:31,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:31,304 INFO L225 Difference]: With dead ends: 337 [2024-11-22 18:38:31,305 INFO L226 Difference]: Without dead ends: 330 [2024-11-22 18:38:31,305 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 [2024-11-22 18:38:31,306 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 75 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:31,307 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 237 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 86 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:31,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2024-11-22 18:38:31,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 279. [2024-11-22 18:38:31,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 279 states, 210 states have (on average 1.7904761904761906) internal successors, (376), 268 states have internal predecessors, (376), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:31,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 279 states to 279 states and 392 transitions. [2024-11-22 18:38:31,316 INFO L78 Accepts]: Start accepts. Automaton has 279 states and 392 transitions. Word has length 12 [2024-11-22 18:38:31,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:31,317 INFO L471 AbstractCegarLoop]: Abstraction has 279 states and 392 transitions. [2024-11-22 18:38:31,317 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) [2024-11-22 18:38:31,317 INFO L276 IsEmpty]: Start isEmpty. Operand 279 states and 392 transitions. [2024-11-22 18:38:31,317 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:38:31,317 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:31,318 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:31,318 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-22 18:38:31,318 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:31,319 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:31,319 INFO L85 PathProgramCache]: Analyzing trace with hash -930261550, now seen corresponding path program 1 times [2024-11-22 18:38:31,320 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:31,320 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1129809654] [2024-11-22 18:38:31,320 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:31,320 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:31,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:31,375 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:31,376 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:31,376 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1129809654] [2024-11-22 18:38:31,376 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1129809654] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:31,376 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:31,376 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:38:31,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [29119924] [2024-11-22 18:38:31,377 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:31,377 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:31,377 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:31,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:31,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:31,378 INFO L87 Difference]: Start difference. First operand 279 states and 392 transitions. Second operand has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:31,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:31,402 INFO L93 Difference]: Finished difference Result 439 states and 602 transitions. [2024-11-22 18:38:31,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:31,402 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-22 18:38:31,402 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:31,404 INFO L225 Difference]: With dead ends: 439 [2024-11-22 18:38:31,404 INFO L226 Difference]: Without dead ends: 439 [2024-11-22 18:38:31,404 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 [2024-11-22 18:38:31,405 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 148 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 446 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:31,405 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 446 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:31,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 439 states. [2024-11-22 18:38:31,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 439 to 283. [2024-11-22 18:38:31,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 214 states have (on average 1.766355140186916) internal successors, (378), 272 states have internal predecessors, (378), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:31,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 394 transitions. [2024-11-22 18:38:31,415 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 394 transitions. Word has length 14 [2024-11-22 18:38:31,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:31,415 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 394 transitions. [2024-11-22 18:38:31,417 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:31,417 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 394 transitions. [2024-11-22 18:38:31,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:38:31,418 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:31,418 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:31,418 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-11-22 18:38:31,418 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:31,419 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:31,419 INFO L85 PathProgramCache]: Analyzing trace with hash -120914924, now seen corresponding path program 1 times [2024-11-22 18:38:31,419 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:31,419 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1806821703] [2024-11-22 18:38:31,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:31,419 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:31,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:31,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:31,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:31,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1806821703] [2024-11-22 18:38:31,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1806821703] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:31,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:31,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:31,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [720205703] [2024-11-22 18:38:31,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:31,475 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:31,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:31,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:31,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:31,475 INFO L87 Difference]: Start difference. First operand 283 states and 394 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:31,624 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:31,625 INFO L93 Difference]: Finished difference Result 379 states and 490 transitions. [2024-11-22 18:38:31,625 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:31,625 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-22 18:38:31,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:31,627 INFO L225 Difference]: With dead ends: 379 [2024-11-22 18:38:31,627 INFO L226 Difference]: Without dead ends: 379 [2024-11-22 18:38:31,627 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:31,628 INFO L432 NwaCegarLoop]: 107 mSDtfsCounter, 168 mSDsluCounter, 193 mSDsCounter, 0 mSdLazyCounter, 184 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 168 SdHoareTripleChecker+Valid, 300 SdHoareTripleChecker+Invalid, 191 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 184 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:31,628 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [168 Valid, 300 Invalid, 191 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 184 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:31,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-22 18:38:31,632 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 283. [2024-11-22 18:38:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 283 states, 214 states have (on average 1.7383177570093458) internal successors, (372), 272 states have internal predecessors, (372), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 6 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:31,633 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 283 states to 283 states and 388 transitions. [2024-11-22 18:38:31,633 INFO L78 Accepts]: Start accepts. Automaton has 283 states and 388 transitions. Word has length 14 [2024-11-22 18:38:31,634 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:31,634 INFO L471 AbstractCegarLoop]: Abstraction has 283 states and 388 transitions. [2024-11-22 18:38:31,634 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 283 states and 388 transitions. [2024-11-22 18:38:31,634 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2024-11-22 18:38:31,634 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:31,634 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:31,635 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-11-22 18:38:31,635 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:31,635 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:31,635 INFO L85 PathProgramCache]: Analyzing trace with hash -120914923, now seen corresponding path program 1 times [2024-11-22 18:38:31,635 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:31,635 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1328188944] [2024-11-22 18:38:31,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:31,636 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:31,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:31,833 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:31,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:31,834 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1328188944] [2024-11-22 18:38:31,834 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1328188944] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:31,834 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:31,834 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-22 18:38:31,834 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847331874] [2024-11-22 18:38:31,834 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:31,835 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-22 18:38:31,835 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:31,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-22 18:38:31,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:31,839 INFO L87 Difference]: Start difference. First operand 283 states and 388 transitions. Second operand has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:32,079 INFO L93 Difference]: Finished difference Result 323 states and 397 transitions. [2024-11-22 18:38:32,080 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:38:32,080 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2024-11-22 18:38:32,080 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:32,081 INFO L225 Difference]: With dead ends: 323 [2024-11-22 18:38:32,081 INFO L226 Difference]: Without dead ends: 323 [2024-11-22 18:38:32,081 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:32,082 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 93 mSDsluCounter, 434 mSDsCounter, 0 mSdLazyCounter, 194 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 578 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 194 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:32,082 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 578 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 194 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:32,082 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 323 states. [2024-11-22 18:38:32,090 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 323 to 287. [2024-11-22 18:38:32,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 287 states, 218 states have (on average 1.7293577981651376) internal successors, (377), 274 states have internal predecessors, (377), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:32,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 287 states to 287 states and 393 transitions. [2024-11-22 18:38:32,096 INFO L78 Accepts]: Start accepts. Automaton has 287 states and 393 transitions. Word has length 14 [2024-11-22 18:38:32,096 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:32,096 INFO L471 AbstractCegarLoop]: Abstraction has 287 states and 393 transitions. [2024-11-22 18:38:32,096 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,096 INFO L276 IsEmpty]: Start isEmpty. Operand 287 states and 393 transitions. [2024-11-22 18:38:32,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:38:32,097 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:32,097 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:32,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-22 18:38:32,097 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:32,097 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:32,101 INFO L85 PathProgramCache]: Analyzing trace with hash 1042256562, now seen corresponding path program 1 times [2024-11-22 18:38:32,101 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:32,101 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [143707421] [2024-11-22 18:38:32,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:32,102 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:32,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:32,176 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:32,176 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:32,176 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [143707421] [2024-11-22 18:38:32,176 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [143707421] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:32,176 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:32,176 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:32,176 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569490557] [2024-11-22 18:38:32,177 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:32,177 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:32,177 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:32,177 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:32,177 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:32,177 INFO L87 Difference]: Start difference. First operand 287 states and 393 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,395 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:32,396 INFO L93 Difference]: Finished difference Result 379 states and 488 transitions. [2024-11-22 18:38:32,396 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:32,396 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-22 18:38:32,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:32,398 INFO L225 Difference]: With dead ends: 379 [2024-11-22 18:38:32,398 INFO L226 Difference]: Without dead ends: 379 [2024-11-22 18:38:32,398 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:32,398 INFO L432 NwaCegarLoop]: 112 mSDtfsCounter, 138 mSDsluCounter, 195 mSDsCounter, 0 mSdLazyCounter, 177 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 307 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 177 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:32,399 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 307 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 177 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:32,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 379 states. [2024-11-22 18:38:32,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 379 to 293. [2024-11-22 18:38:32,403 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 224 states have (on average 1.7098214285714286) internal successors, (383), 280 states have internal predecessors, (383), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:32,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 399 transitions. [2024-11-22 18:38:32,404 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 399 transitions. Word has length 17 [2024-11-22 18:38:32,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:32,404 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 399 transitions. [2024-11-22 18:38:32,404 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,404 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 399 transitions. [2024-11-22 18:38:32,405 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-11-22 18:38:32,405 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:32,405 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:32,405 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-22 18:38:32,405 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:32,406 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:32,406 INFO L85 PathProgramCache]: Analyzing trace with hash 1042256563, now seen corresponding path program 1 times [2024-11-22 18:38:32,406 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:32,406 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74473866] [2024-11-22 18:38:32,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:32,406 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:32,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:32,489 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:32,489 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:32,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74473866] [2024-11-22 18:38:32,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74473866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:32,489 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:32,489 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:32,489 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [248653557] [2024-11-22 18:38:32,489 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:32,490 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:32,490 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:32,490 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:32,490 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:32,490 INFO L87 Difference]: Start difference. First operand 293 states and 399 transitions. Second operand has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:32,680 INFO L93 Difference]: Finished difference Result 328 states and 399 transitions. [2024-11-22 18:38:32,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:32,680 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 17 [2024-11-22 18:38:32,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:32,681 INFO L225 Difference]: With dead ends: 328 [2024-11-22 18:38:32,681 INFO L226 Difference]: Without dead ends: 328 [2024-11-22 18:38:32,682 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:32,682 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 96 mSDsluCounter, 220 mSDsCounter, 0 mSdLazyCounter, 138 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 96 SdHoareTripleChecker+Valid, 364 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 138 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:32,682 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [96 Valid, 364 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 138 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:32,683 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2024-11-22 18:38:32,690 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 293. [2024-11-22 18:38:32,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 224 states have (on average 1.6830357142857142) internal successors, (377), 280 states have internal predecessors, (377), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:32,696 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 393 transitions. [2024-11-22 18:38:32,696 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 393 transitions. Word has length 17 [2024-11-22 18:38:32,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:32,696 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 393 transitions. [2024-11-22 18:38:32,696 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 5.0) internal successors, (15), 4 states have internal predecessors, (15), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,696 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 393 transitions. [2024-11-22 18:38:32,696 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:38:32,697 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:32,697 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:32,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-22 18:38:32,700 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:32,701 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:32,701 INFO L85 PathProgramCache]: Analyzing trace with hash -1738140034, now seen corresponding path program 1 times [2024-11-22 18:38:32,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:32,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [658199347] [2024-11-22 18:38:32,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:32,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:32,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:32,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:32,751 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:32,751 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [658199347] [2024-11-22 18:38:32,751 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [658199347] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:32,751 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:32,751 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-22 18:38:32,751 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [483383506] [2024-11-22 18:38:32,751 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:32,752 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:38:32,752 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:32,752 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:38:32,752 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:38:32,752 INFO L87 Difference]: Start difference. First operand 293 states and 393 transitions. Second operand has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,844 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:32,845 INFO L93 Difference]: Finished difference Result 290 states and 387 transitions. [2024-11-22 18:38:32,845 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:38:32,845 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 18:38:32,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:32,850 INFO L225 Difference]: With dead ends: 290 [2024-11-22 18:38:32,850 INFO L226 Difference]: Without dead ends: 290 [2024-11-22 18:38:32,850 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 [2024-11-22 18:38:32,851 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 6 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 63 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 65 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 63 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:32,851 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 244 Invalid, 65 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 63 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:32,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2024-11-22 18:38:32,854 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 290. [2024-11-22 18:38:32,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 290 states, 224 states have (on average 1.65625) internal successors, (371), 277 states have internal predecessors, (371), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:32,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 290 states to 290 states and 387 transitions. [2024-11-22 18:38:32,860 INFO L78 Accepts]: Start accepts. Automaton has 290 states and 387 transitions. Word has length 20 [2024-11-22 18:38:32,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:32,860 INFO L471 AbstractCegarLoop]: Abstraction has 290 states and 387 transitions. [2024-11-22 18:38:32,860 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 9.0) internal successors, (18), 3 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:32,860 INFO L276 IsEmpty]: Start isEmpty. Operand 290 states and 387 transitions. [2024-11-22 18:38:32,861 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-11-22 18:38:32,864 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:32,864 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:32,864 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-22 18:38:32,864 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:32,865 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:32,865 INFO L85 PathProgramCache]: Analyzing trace with hash -1738140033, now seen corresponding path program 1 times [2024-11-22 18:38:32,865 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:32,865 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1294341678] [2024-11-22 18:38:32,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:32,865 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:32,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:32,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:32,981 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:32,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1294341678] [2024-11-22 18:38:32,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1294341678] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:32,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:32,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:32,983 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2067374999] [2024-11-22 18:38:32,983 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:32,984 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:32,984 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:32,984 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:32,984 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:32,985 INFO L87 Difference]: Start difference. First operand 290 states and 387 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:33,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:33,114 INFO L93 Difference]: Finished difference Result 293 states and 389 transitions. [2024-11-22 18:38:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:33,115 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 20 [2024-11-22 18:38:33,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:33,116 INFO L225 Difference]: With dead ends: 293 [2024-11-22 18:38:33,120 INFO L226 Difference]: Without dead ends: 293 [2024-11-22 18:38:33,120 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2024-11-22 18:38:33,121 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 8 mSDsluCounter, 211 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 362 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:33,121 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 362 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:33,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 293 states. [2024-11-22 18:38:33,125 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 293 to 293. [2024-11-22 18:38:33,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 293 states, 228 states have (on average 1.6359649122807018) internal successors, (373), 280 states have internal predecessors, (373), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:33,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 293 states to 293 states and 389 transitions. [2024-11-22 18:38:33,131 INFO L78 Accepts]: Start accepts. Automaton has 293 states and 389 transitions. Word has length 20 [2024-11-22 18:38:33,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:33,131 INFO L471 AbstractCegarLoop]: Abstraction has 293 states and 389 transitions. [2024-11-22 18:38:33,131 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:33,134 INFO L276 IsEmpty]: Start isEmpty. Operand 293 states and 389 transitions. [2024-11-22 18:38:33,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 18:38:33,134 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:33,134 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:33,134 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-22 18:38:33,135 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:33,135 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:33,135 INFO L85 PathProgramCache]: Analyzing trace with hash 1952233834, now seen corresponding path program 1 times [2024-11-22 18:38:33,135 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:33,135 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1241372384] [2024-11-22 18:38:33,136 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:33,136 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:33,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:33,263 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:33,267 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:33,267 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1241372384] [2024-11-22 18:38:33,267 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1241372384] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:33,267 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:33,268 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:38:33,268 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [687882734] [2024-11-22 18:38:33,268 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:33,268 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:38:33,268 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:33,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:38:33,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:33,269 INFO L87 Difference]: Start difference. First operand 293 states and 389 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:33,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:33,377 INFO L93 Difference]: Finished difference Result 299 states and 395 transitions. [2024-11-22 18:38:33,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:33,377 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-22 18:38:33,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:33,382 INFO L225 Difference]: With dead ends: 299 [2024-11-22 18:38:33,382 INFO L226 Difference]: Without dead ends: 299 [2024-11-22 18:38:33,382 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:33,383 INFO L432 NwaCegarLoop]: 151 mSDtfsCounter, 9 mSDsluCounter, 253 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:33,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 404 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:33,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 299 states. [2024-11-22 18:38:33,390 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 299 to 295. [2024-11-22 18:38:33,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 295 states, 230 states have (on average 1.6304347826086956) internal successors, (375), 282 states have internal predecessors, (375), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:33,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 295 states to 295 states and 391 transitions. [2024-11-22 18:38:33,396 INFO L78 Accepts]: Start accepts. Automaton has 295 states and 391 transitions. Word has length 21 [2024-11-22 18:38:33,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:33,396 INFO L471 AbstractCegarLoop]: Abstraction has 295 states and 391 transitions. [2024-11-22 18:38:33,397 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 5 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:33,397 INFO L276 IsEmpty]: Start isEmpty. Operand 295 states and 391 transitions. [2024-11-22 18:38:33,397 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-11-22 18:38:33,397 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:33,397 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:33,397 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-11-22 18:38:33,397 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:33,398 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:33,398 INFO L85 PathProgramCache]: Analyzing trace with hash 1952289538, now seen corresponding path program 1 times [2024-11-22 18:38:33,398 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:33,398 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957484139] [2024-11-22 18:38:33,399 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:33,399 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:33,456 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:33,456 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:33,456 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957484139] [2024-11-22 18:38:33,457 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957484139] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:33,457 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:33,457 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:38:33,457 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1719572398] [2024-11-22 18:38:33,457 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:33,457 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:33,457 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:33,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:33,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:38:33,458 INFO L87 Difference]: Start difference. First operand 295 states and 391 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:33,498 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:33,498 INFO L93 Difference]: Finished difference Result 285 states and 375 transitions. [2024-11-22 18:38:33,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:38:33,499 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 21 [2024-11-22 18:38:33,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:33,500 INFO L225 Difference]: With dead ends: 285 [2024-11-22 18:38:33,500 INFO L226 Difference]: Without dead ends: 285 [2024-11-22 18:38:33,500 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:38:33,501 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 31 mSDsluCounter, 689 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 834 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 [2024-11-22 18:38:33,501 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 834 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:33,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 285 states. [2024-11-22 18:38:33,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 285 to 285. [2024-11-22 18:38:33,507 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 285 states, 222 states have (on average 1.617117117117117) internal successors, (359), 272 states have internal predecessors, (359), 8 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (8), 8 states have call predecessors, (8), 8 states have call successors, (8) [2024-11-22 18:38:33,508 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 285 states to 285 states and 375 transitions. [2024-11-22 18:38:33,508 INFO L78 Accepts]: Start accepts. Automaton has 285 states and 375 transitions. Word has length 21 [2024-11-22 18:38:33,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:33,509 INFO L471 AbstractCegarLoop]: Abstraction has 285 states and 375 transitions. [2024-11-22 18:38:33,509 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:33,509 INFO L276 IsEmpty]: Start isEmpty. Operand 285 states and 375 transitions. [2024-11-22 18:38:33,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2024-11-22 18:38:33,510 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:33,510 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:33,510 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-11-22 18:38:33,510 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:33,511 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:33,511 INFO L85 PathProgramCache]: Analyzing trace with hash -1056785802, now seen corresponding path program 1 times [2024-11-22 18:38:33,512 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:33,512 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1632082594] [2024-11-22 18:38:33,512 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:33,512 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:33,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:33,759 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:33,760 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:33,760 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1632082594] [2024-11-22 18:38:33,760 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1632082594] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:33,760 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:33,760 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:38:33,760 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1131592891] [2024-11-22 18:38:33,760 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:33,761 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:38:33,761 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:33,761 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:38:33,761 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:33,761 INFO L87 Difference]: Start difference. First operand 285 states and 375 transitions. Second operand has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:34,048 INFO L93 Difference]: Finished difference Result 385 states and 486 transitions. [2024-11-22 18:38:34,049 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:38:34,049 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2024-11-22 18:38:34,049 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:34,050 INFO L225 Difference]: With dead ends: 385 [2024-11-22 18:38:34,050 INFO L226 Difference]: Without dead ends: 385 [2024-11-22 18:38:34,050 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:38:34,051 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 86 mSDsluCounter, 717 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 86 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:34,051 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [86 Valid, 849 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:34,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 385 states. [2024-11-22 18:38:34,055 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 385 to 337. [2024-11-22 18:38:34,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 337 states, 269 states have (on average 1.5910780669144982) internal successors, (428), 320 states have internal predecessors, (428), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:38:34,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 337 states to 337 states and 450 transitions. [2024-11-22 18:38:34,056 INFO L78 Accepts]: Start accepts. Automaton has 337 states and 450 transitions. Word has length 23 [2024-11-22 18:38:34,056 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:34,056 INFO L471 AbstractCegarLoop]: Abstraction has 337 states and 450 transitions. [2024-11-22 18:38:34,057 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.625) internal successors, (21), 8 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,057 INFO L276 IsEmpty]: Start isEmpty. Operand 337 states and 450 transitions. [2024-11-22 18:38:34,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 18:38:34,057 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:34,057 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 18:38:34,057 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-22 18:38:34,058 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:34,058 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:34,058 INFO L85 PathProgramCache]: Analyzing trace with hash -1951233503, now seen corresponding path program 1 times [2024-11-22 18:38:34,058 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:34,058 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1305948750] [2024-11-22 18:38:34,058 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:34,058 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:34,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:34,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:34,095 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:34,095 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1305948750] [2024-11-22 18:38:34,095 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1305948750] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:34,095 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:34,095 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2024-11-22 18:38:34,095 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [130893719] [2024-11-22 18:38:34,095 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:34,096 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:38:34,096 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:34,096 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:38:34,096 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:34,096 INFO L87 Difference]: Start difference. First operand 337 states and 450 transitions. Second operand has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:34,163 INFO L93 Difference]: Finished difference Result 342 states and 449 transitions. [2024-11-22 18:38:34,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:34,164 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-22 18:38:34,164 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:34,165 INFO L225 Difference]: With dead ends: 342 [2024-11-22 18:38:34,165 INFO L226 Difference]: Without dead ends: 342 [2024-11-22 18:38:34,165 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:34,165 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 38 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 94 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 308 SdHoareTripleChecker+Invalid, 101 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 94 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:34,166 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 308 Invalid, 101 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 94 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:34,166 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 342 states. [2024-11-22 18:38:34,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 342 to 333. [2024-11-22 18:38:34,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 333 states, 271 states have (on average 1.5313653136531364) internal successors, (415), 316 states have internal predecessors, (415), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-22 18:38:34,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 333 states to 333 states and 437 transitions. [2024-11-22 18:38:34,171 INFO L78 Accepts]: Start accepts. Automaton has 333 states and 437 transitions. Word has length 25 [2024-11-22 18:38:34,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:34,171 INFO L471 AbstractCegarLoop]: Abstraction has 333 states and 437 transitions. [2024-11-22 18:38:34,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.75) internal successors, (23), 5 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,172 INFO L276 IsEmpty]: Start isEmpty. Operand 333 states and 437 transitions. [2024-11-22 18:38:34,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 18:38:34,172 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:34,172 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 18:38:34,172 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-22 18:38:34,172 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:34,173 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:34,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1951233502, now seen corresponding path program 1 times [2024-11-22 18:38:34,173 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:34,173 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1097722852] [2024-11-22 18:38:34,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:34,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:34,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:34,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:34,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:34,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1097722852] [2024-11-22 18:38:34,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1097722852] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:34,312 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:34,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:38:34,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [225510171] [2024-11-22 18:38:34,312 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:34,314 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:38:34,314 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:34,314 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:38:34,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:34,315 INFO L87 Difference]: Start difference. First operand 333 states and 437 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:34,460 INFO L93 Difference]: Finished difference Result 322 states and 387 transitions. [2024-11-22 18:38:34,460 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:38:34,460 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-22 18:38:34,460 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:34,461 INFO L225 Difference]: With dead ends: 322 [2024-11-22 18:38:34,461 INFO L226 Difference]: Without dead ends: 322 [2024-11-22 18:38:34,462 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=161, Unknown=0, NotChecked=0, Total=210 [2024-11-22 18:38:34,462 INFO L432 NwaCegarLoop]: 140 mSDtfsCounter, 72 mSDsluCounter, 807 mSDsCounter, 0 mSdLazyCounter, 134 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 72 SdHoareTripleChecker+Valid, 947 SdHoareTripleChecker+Invalid, 134 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 134 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:34,462 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [72 Valid, 947 Invalid, 134 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 134 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:34,463 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 322 states. [2024-11-22 18:38:34,466 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 322 to 280. [2024-11-22 18:38:34,466 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 280 states, 220 states have (on average 1.4772727272727273) internal successors, (325), 265 states have internal predecessors, (325), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:38:34,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 345 transitions. [2024-11-22 18:38:34,467 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 345 transitions. Word has length 25 [2024-11-22 18:38:34,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:34,467 INFO L471 AbstractCegarLoop]: Abstraction has 280 states and 345 transitions. [2024-11-22 18:38:34,467 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 8 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,467 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 345 transitions. [2024-11-22 18:38:34,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-11-22 18:38:34,468 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:34,468 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 18:38:34,468 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-22 18:38:34,468 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:34,468 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:34,469 INFO L85 PathProgramCache]: Analyzing trace with hash 456369005, now seen corresponding path program 1 times [2024-11-22 18:38:34,469 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:34,469 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [865223728] [2024-11-22 18:38:34,469 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:34,469 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:34,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:34,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:34,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:34,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [865223728] [2024-11-22 18:38:34,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [865223728] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:34,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:34,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:38:34,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10789258] [2024-11-22 18:38:34,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:34,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:38:34,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:34,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:38:34,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:34,630 INFO L87 Difference]: Start difference. First operand 280 states and 345 transitions. Second operand has 8 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:34,792 INFO L93 Difference]: Finished difference Result 315 states and 376 transitions. [2024-11-22 18:38:34,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:38:34,792 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 25 [2024-11-22 18:38:34,792 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:34,793 INFO L225 Difference]: With dead ends: 315 [2024-11-22 18:38:34,793 INFO L226 Difference]: Without dead ends: 315 [2024-11-22 18:38:34,793 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:38:34,794 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 69 mSDsluCounter, 707 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 849 SdHoareTripleChecker+Invalid, 139 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:34,794 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 849 Invalid, 139 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:34,794 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 315 states. [2024-11-22 18:38:34,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 315 to 300. [2024-11-22 18:38:34,799 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 240 states have (on average 1.4375) internal successors, (345), 285 states have internal predecessors, (345), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:38:34,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 365 transitions. [2024-11-22 18:38:34,800 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 365 transitions. Word has length 25 [2024-11-22 18:38:34,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:34,800 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 365 transitions. [2024-11-22 18:38:34,800 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.875) internal successors, (23), 6 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:34,801 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 365 transitions. [2024-11-22 18:38:34,801 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-22 18:38:34,801 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:34,801 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 18:38:34,801 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-11-22 18:38:34,801 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:34,802 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:34,802 INFO L85 PathProgramCache]: Analyzing trace with hash 484106160, now seen corresponding path program 1 times [2024-11-22 18:38:34,802 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:34,802 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [452284858] [2024-11-22 18:38:34,802 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:34,803 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:34,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:35,017 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:35,017 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:35,017 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [452284858] [2024-11-22 18:38:35,018 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [452284858] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:35,018 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:35,018 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-22 18:38:35,018 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [305083475] [2024-11-22 18:38:35,018 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:35,018 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 18:38:35,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:35,020 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 18:38:35,020 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2024-11-22 18:38:35,021 INFO L87 Difference]: Start difference. First operand 300 states and 365 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:35,325 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:35,325 INFO L93 Difference]: Finished difference Result 364 states and 420 transitions. [2024-11-22 18:38:35,326 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-22 18:38:35,326 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 27 [2024-11-22 18:38:35,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:35,327 INFO L225 Difference]: With dead ends: 364 [2024-11-22 18:38:35,327 INFO L226 Difference]: Without dead ends: 364 [2024-11-22 18:38:35,327 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:38:35,328 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 134 mSDsluCounter, 462 mSDsCounter, 0 mSdLazyCounter, 450 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 553 SdHoareTripleChecker+Invalid, 452 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 450 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:35,328 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 553 Invalid, 452 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 450 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:35,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 364 states. [2024-11-22 18:38:35,332 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 364 to 300. [2024-11-22 18:38:35,332 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 300 states, 240 states have (on average 1.4333333333333333) internal successors, (344), 285 states have internal predecessors, (344), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:38:35,333 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 364 transitions. [2024-11-22 18:38:35,333 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 364 transitions. Word has length 27 [2024-11-22 18:38:35,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:35,334 INFO L471 AbstractCegarLoop]: Abstraction has 300 states and 364 transitions. [2024-11-22 18:38:35,334 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 7 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:35,334 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 364 transitions. [2024-11-22 18:38:35,335 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-11-22 18:38:35,335 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:35,335 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 18:38:35,336 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-11-22 18:38:35,336 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:35,336 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:35,336 INFO L85 PathProgramCache]: Analyzing trace with hash 2122389103, now seen corresponding path program 1 times [2024-11-22 18:38:35,336 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:35,336 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [31676860] [2024-11-22 18:38:35,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:35,336 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:35,464 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:35,464 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:35,464 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [31676860] [2024-11-22 18:38:35,464 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [31676860] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:35,464 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:35,464 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:38:35,464 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [693884189] [2024-11-22 18:38:35,465 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:35,465 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:35,465 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:35,465 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:35,465 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:38:35,466 INFO L87 Difference]: Start difference. First operand 300 states and 364 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:35,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:35,541 INFO L93 Difference]: Finished difference Result 300 states and 362 transitions. [2024-11-22 18:38:35,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:38:35,541 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 28 [2024-11-22 18:38:35,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:35,542 INFO L225 Difference]: With dead ends: 300 [2024-11-22 18:38:35,542 INFO L226 Difference]: Without dead ends: 300 [2024-11-22 18:38:35,542 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:35,543 INFO L432 NwaCegarLoop]: 129 mSDtfsCounter, 18 mSDsluCounter, 457 mSDsCounter, 0 mSdLazyCounter, 109 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 586 SdHoareTripleChecker+Invalid, 111 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 109 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:35,543 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [18 Valid, 586 Invalid, 111 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 109 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:35,543 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2024-11-22 18:38:35,546 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 298. [2024-11-22 18:38:35,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 240 states have (on average 1.4166666666666667) internal successors, (340), 283 states have internal predecessors, (340), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:38:35,547 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 360 transitions. [2024-11-22 18:38:35,548 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 360 transitions. Word has length 28 [2024-11-22 18:38:35,548 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:35,548 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 360 transitions. [2024-11-22 18:38:35,548 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:35,548 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 360 transitions. [2024-11-22 18:38:35,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2024-11-22 18:38:35,548 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:35,549 INFO L215 NwaCegarLoop]: trace histogram [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] [2024-11-22 18:38:35,549 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2024-11-22 18:38:35,549 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:35,549 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:35,549 INFO L85 PathProgramCache]: Analyzing trace with hash -493536303, now seen corresponding path program 1 times [2024-11-22 18:38:35,549 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:35,549 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [591183104] [2024-11-22 18:38:35,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:35,550 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:35,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:35,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:35,749 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:35,749 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [591183104] [2024-11-22 18:38:35,749 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [591183104] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:35,749 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:35,749 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:38:35,749 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360512003] [2024-11-22 18:38:35,749 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:35,750 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:35,750 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:35,750 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:35,750 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:38:35,750 INFO L87 Difference]: Start difference. First operand 298 states and 360 transitions. Second operand has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:36,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:36,097 INFO L93 Difference]: Finished difference Result 359 states and 415 transitions. [2024-11-22 18:38:36,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-22 18:38:36,098 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 30 [2024-11-22 18:38:36,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:36,099 INFO L225 Difference]: With dead ends: 359 [2024-11-22 18:38:36,099 INFO L226 Difference]: Without dead ends: 359 [2024-11-22 18:38:36,099 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:38:36,100 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 150 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 206 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 264 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 206 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:36,100 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 264 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 206 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:38:36,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 359 states. [2024-11-22 18:38:36,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 359 to 298. [2024-11-22 18:38:36,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 298 states, 240 states have (on average 1.4083333333333334) internal successors, (338), 283 states have internal predecessors, (338), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:38:36,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 298 states to 298 states and 358 transitions. [2024-11-22 18:38:36,105 INFO L78 Accepts]: Start accepts. Automaton has 298 states and 358 transitions. Word has length 30 [2024-11-22 18:38:36,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:36,106 INFO L471 AbstractCegarLoop]: Abstraction has 298 states and 358 transitions. [2024-11-22 18:38:36,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.666666666666667) internal successors, (28), 7 states have internal predecessors, (28), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:36,106 INFO L276 IsEmpty]: Start isEmpty. Operand 298 states and 358 transitions. [2024-11-22 18:38:36,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-22 18:38:36,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:36,106 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:36,106 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-22 18:38:36,107 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:36,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:36,107 INFO L85 PathProgramCache]: Analyzing trace with hash 1918246339, now seen corresponding path program 1 times [2024-11-22 18:38:36,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:36,107 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [755214876] [2024-11-22 18:38:36,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:36,107 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:36,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:36,148 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:36,149 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [755214876] [2024-11-22 18:38:36,149 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [755214876] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:36,149 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1797849789] [2024-11-22 18:38:36,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:36,149 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:36,149 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:36,151 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) [2024-11-22 18:38:36,156 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-22 18:38:36,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:36,233 INFO L255 TraceCheckSpWp]: Trace formula consists of 136 conjuncts, 2 conjuncts are in the unsatisfiable core [2024-11-22 18:38:36,240 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:36,259 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2024-11-22 18:38:36,259 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:36,260 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1797849789] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:36,260 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:36,260 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [5] total 6 [2024-11-22 18:38:36,260 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1999499285] [2024-11-22 18:38:36,260 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:36,260 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:38:36,260 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:36,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:38:36,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:36,261 INFO L87 Difference]: Start difference. First operand 298 states and 358 transitions. Second operand has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:36,273 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:36,273 INFO L93 Difference]: Finished difference Result 302 states and 361 transitions. [2024-11-22 18:38:36,274 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:38:36,274 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-11-22 18:38:36,274 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:36,275 INFO L225 Difference]: With dead ends: 302 [2024-11-22 18:38:36,275 INFO L226 Difference]: Without dead ends: 301 [2024-11-22 18:38:36,275 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 33 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-22 18:38:36,276 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 6 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:36,276 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 6 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:36,276 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 301 states. [2024-11-22 18:38:36,279 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 301 to 301. [2024-11-22 18:38:36,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 301 states, 243 states have (on average 1.3991769547325104) internal successors, (340), 286 states have internal predecessors, (340), 10 states have call successors, (10), 5 states have call predecessors, (10), 5 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-22 18:38:36,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 301 states to 301 states and 360 transitions. [2024-11-22 18:38:36,281 INFO L78 Accepts]: Start accepts. Automaton has 301 states and 360 transitions. Word has length 33 [2024-11-22 18:38:36,281 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:36,281 INFO L471 AbstractCegarLoop]: Abstraction has 301 states and 360 transitions. [2024-11-22 18:38:36,281 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 10.0) internal successors, (30), 3 states have internal predecessors, (30), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:36,281 INFO L276 IsEmpty]: Start isEmpty. Operand 301 states and 360 transitions. [2024-11-22 18:38:36,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2024-11-22 18:38:36,281 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:36,281 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:36,291 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2024-11-22 18:38:36,485 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable23 [2024-11-22 18:38:36,486 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:36,486 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:36,486 INFO L85 PathProgramCache]: Analyzing trace with hash -1559072507, now seen corresponding path program 1 times [2024-11-22 18:38:36,486 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:36,486 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [589158406] [2024-11-22 18:38:36,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:36,486 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:36,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:36,894 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:38:36,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:36,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [589158406] [2024-11-22 18:38:36,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [589158406] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:36,895 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:36,895 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 18:38:36,895 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734923706] [2024-11-22 18:38:36,895 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:36,895 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-22 18:38:36,895 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:36,896 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-22 18:38:36,896 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:38:36,896 INFO L87 Difference]: Start difference. First operand 301 states and 360 transitions. Second operand has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:37,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:37,352 INFO L93 Difference]: Finished difference Result 257 states and 303 transitions. [2024-11-22 18:38:37,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:38:37,352 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 33 [2024-11-22 18:38:37,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:37,353 INFO L225 Difference]: With dead ends: 257 [2024-11-22 18:38:37,353 INFO L226 Difference]: Without dead ends: 257 [2024-11-22 18:38:37,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2024-11-22 18:38:37,354 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 104 mSDsluCounter, 696 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 828 SdHoareTripleChecker+Invalid, 195 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:37,354 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 828 Invalid, 195 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:37,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 257 states. [2024-11-22 18:38:37,358 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 257 to 229. [2024-11-22 18:38:37,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 177 states have (on average 1.463276836158192) internal successors, (259), 219 states have internal predecessors, (259), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:38:37,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 271 transitions. [2024-11-22 18:38:37,359 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 271 transitions. Word has length 33 [2024-11-22 18:38:37,359 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:37,359 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 271 transitions. [2024-11-22 18:38:37,359 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.1) internal successors, (31), 10 states have internal predecessors, (31), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:37,359 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 271 transitions. [2024-11-22 18:38:37,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-22 18:38:37,360 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:37,360 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 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] [2024-11-22 18:38:37,360 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-22 18:38:37,360 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:37,360 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:37,360 INFO L85 PathProgramCache]: Analyzing trace with hash 896646995, now seen corresponding path program 1 times [2024-11-22 18:38:37,360 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:37,360 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [229491261] [2024-11-22 18:38:37,360 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:37,361 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:37,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:37,399 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2024-11-22 18:38:37,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:37,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [229491261] [2024-11-22 18:38:37,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [229491261] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:37,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:37,400 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-22 18:38:37,400 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1145068685] [2024-11-22 18:38:37,400 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:37,400 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-22 18:38:37,400 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:37,401 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-22 18:38:37,401 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-22 18:38:37,401 INFO L87 Difference]: Start difference. First operand 229 states and 271 transitions. Second operand has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:37,407 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:37,407 INFO L93 Difference]: Finished difference Result 231 states and 273 transitions. [2024-11-22 18:38:37,408 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-22 18:38:37,408 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2024-11-22 18:38:37,408 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:37,408 INFO L225 Difference]: With dead ends: 231 [2024-11-22 18:38:37,408 INFO L226 Difference]: Without dead ends: 231 [2024-11-22 18:38:37,409 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 [2024-11-22 18:38:37,409 INFO L432 NwaCegarLoop]: 145 mSDtfsCounter, 0 mSDsluCounter, 139 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:37,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 284 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:37,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-22 18:38:37,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2024-11-22 18:38:37,412 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 179 states have (on average 1.458100558659218) internal successors, (261), 221 states have internal predecessors, (261), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:38:37,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 273 transitions. [2024-11-22 18:38:37,412 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 273 transitions. Word has length 41 [2024-11-22 18:38:37,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:37,413 INFO L471 AbstractCegarLoop]: Abstraction has 231 states and 273 transitions. [2024-11-22 18:38:37,413 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 11.333333333333334) internal successors, (34), 3 states have internal predecessors, (34), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:37,413 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 273 transitions. [2024-11-22 18:38:37,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-22 18:38:37,413 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:37,413 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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] [2024-11-22 18:38:37,413 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-22 18:38:37,413 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:37,413 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:37,414 INFO L85 PathProgramCache]: Analyzing trace with hash 1705993621, now seen corresponding path program 1 times [2024-11-22 18:38:37,414 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:37,414 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1489721980] [2024-11-22 18:38:37,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:37,414 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:37,620 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:38:37,620 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1489721980] [2024-11-22 18:38:37,620 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1489721980] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:37,620 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89966349] [2024-11-22 18:38:37,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:37,620 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:37,621 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:37,622 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) [2024-11-22 18:38:37,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-22 18:38:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:37,712 INFO L255 TraceCheckSpWp]: Trace formula consists of 249 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 18:38:37,714 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:38,116 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:38,117 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:38,334 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:38,334 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 19 treesize of output 23 [2024-11-22 18:38:38,592 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:38:38,592 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89966349] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:38,592 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:38,592 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7, 8] total 22 [2024-11-22 18:38:38,592 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503192061] [2024-11-22 18:38:38,592 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:38,592 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 18:38:38,593 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:38,593 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 18:38:38,593 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=93, Invalid=413, Unknown=0, NotChecked=0, Total=506 [2024-11-22 18:38:38,593 INFO L87 Difference]: Start difference. First operand 231 states and 273 transitions. Second operand has 23 states, 22 states have (on average 4.954545454545454) internal successors, (109), 20 states have internal predecessors, (109), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:38:39,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:39,037 INFO L93 Difference]: Finished difference Result 231 states and 272 transitions. [2024-11-22 18:38:39,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:38:39,037 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.954545454545454) internal successors, (109), 20 states have internal predecessors, (109), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 41 [2024-11-22 18:38:39,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:39,038 INFO L225 Difference]: With dead ends: 231 [2024-11-22 18:38:39,038 INFO L226 Difference]: Without dead ends: 231 [2024-11-22 18:38:39,039 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 90 GetRequests, 67 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=125, Invalid=475, Unknown=0, NotChecked=0, Total=600 [2024-11-22 18:38:39,039 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 409 mSDsluCounter, 914 mSDsCounter, 0 mSdLazyCounter, 559 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 410 SdHoareTripleChecker+Valid, 1010 SdHoareTripleChecker+Invalid, 570 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 559 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:39,039 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [410 Valid, 1010 Invalid, 570 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 559 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 18:38:39,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2024-11-22 18:38:39,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 229. [2024-11-22 18:38:39,045 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 229 states, 179 states have (on average 1.441340782122905) internal successors, (258), 219 states have internal predecessors, (258), 6 states have call successors, (6), 3 states have call predecessors, (6), 3 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:38:39,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 229 states to 229 states and 270 transitions. [2024-11-22 18:38:39,046 INFO L78 Accepts]: Start accepts. Automaton has 229 states and 270 transitions. Word has length 41 [2024-11-22 18:38:39,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:39,046 INFO L471 AbstractCegarLoop]: Abstraction has 229 states and 270 transitions. [2024-11-22 18:38:39,047 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.954545454545454) internal successors, (109), 20 states have internal predecessors, (109), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:38:39,047 INFO L276 IsEmpty]: Start isEmpty. Operand 229 states and 270 transitions. [2024-11-22 18:38:39,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 18:38:39,047 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:39,047 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:39,054 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-22 18:38:39,247 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,SelfDestructingSolverStorable26 [2024-11-22 18:38:39,248 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:39,249 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:39,249 INFO L85 PathProgramCache]: Analyzing trace with hash 1350180533, now seen corresponding path program 1 times [2024-11-22 18:38:39,249 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:39,249 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1321394406] [2024-11-22 18:38:39,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:39,249 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:39,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:39,312 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:39,312 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:39,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1321394406] [2024-11-22 18:38:39,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1321394406] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:39,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [647084165] [2024-11-22 18:38:39,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:39,313 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:39,313 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:39,315 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) [2024-11-22 18:38:39,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-22 18:38:39,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:39,399 INFO L255 TraceCheckSpWp]: Trace formula consists of 260 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:38:39,401 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:39,469 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:39,470 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:39,532 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:39,533 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [647084165] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:39,533 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:39,533 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 8 [2024-11-22 18:38:39,533 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596735581] [2024-11-22 18:38:39,533 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:39,534 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:38:39,534 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:39,534 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:38:39,534 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:38:39,534 INFO L87 Difference]: Start difference. First operand 229 states and 270 transitions. Second operand has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 18:38:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:39,620 INFO L93 Difference]: Finished difference Result 809 states and 970 transitions. [2024-11-22 18:38:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-22 18:38:39,620 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 44 [2024-11-22 18:38:39,620 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:39,622 INFO L225 Difference]: With dead ends: 809 [2024-11-22 18:38:39,622 INFO L226 Difference]: Without dead ends: 809 [2024-11-22 18:38:39,622 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 85 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=52, Invalid=80, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:38:39,623 INFO L432 NwaCegarLoop]: 195 mSDtfsCounter, 594 mSDsluCounter, 628 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 600 SdHoareTripleChecker+Valid, 823 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:39,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [600 Valid, 823 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:39,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 809 states. [2024-11-22 18:38:39,629 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 809 to 391. [2024-11-22 18:38:39,629 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 391 states, 335 states have (on average 1.4149253731343283) internal successors, (474), 375 states have internal predecessors, (474), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-22 18:38:39,630 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 391 states to 391 states and 498 transitions. [2024-11-22 18:38:39,630 INFO L78 Accepts]: Start accepts. Automaton has 391 states and 498 transitions. Word has length 44 [2024-11-22 18:38:39,631 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:39,631 INFO L471 AbstractCegarLoop]: Abstraction has 391 states and 498 transitions. [2024-11-22 18:38:39,631 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 11.875) internal successors, (95), 8 states have internal predecessors, (95), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2024-11-22 18:38:39,631 INFO L276 IsEmpty]: Start isEmpty. Operand 391 states and 498 transitions. [2024-11-22 18:38:39,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-22 18:38:39,631 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:39,631 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1] [2024-11-22 18:38:39,641 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-22 18:38:39,832 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:39,832 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:39,833 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:39,833 INFO L85 PathProgramCache]: Analyzing trace with hash 649115955, now seen corresponding path program 1 times [2024-11-22 18:38:39,833 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:39,833 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [483093760] [2024-11-22 18:38:39,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:39,833 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:39,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:39,990 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:39,991 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [483093760] [2024-11-22 18:38:39,991 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [483093760] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:39,991 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [739279831] [2024-11-22 18:38:39,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:39,991 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:39,991 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:39,997 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) [2024-11-22 18:38:40,000 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-22 18:38:40,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:40,100 INFO L255 TraceCheckSpWp]: Trace formula consists of 263 conjuncts, 27 conjuncts are in the unsatisfiable core [2024-11-22 18:38:40,103 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:40,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:40,405 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:40,406 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [739279831] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:40,406 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:40,406 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 11 [2024-11-22 18:38:40,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [575718110] [2024-11-22 18:38:40,406 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:40,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:40,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:40,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:40,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=97, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:38:40,407 INFO L87 Difference]: Start difference. First operand 391 states and 498 transitions. Second operand has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:40,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:40,508 INFO L93 Difference]: Finished difference Result 396 states and 501 transitions. [2024-11-22 18:38:40,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:40,509 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2024-11-22 18:38:40,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:40,511 INFO L225 Difference]: With dead ends: 396 [2024-11-22 18:38:40,511 INFO L226 Difference]: Without dead ends: 396 [2024-11-22 18:38:40,511 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=129, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:38:40,512 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 270 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 246 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:40,512 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 246 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:40,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 396 states. [2024-11-22 18:38:40,518 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 396 to 388. [2024-11-22 18:38:40,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 388 states, 335 states have (on average 1.4) internal successors, (469), 372 states have internal predecessors, (469), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-22 18:38:40,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 388 states to 388 states and 493 transitions. [2024-11-22 18:38:40,519 INFO L78 Accepts]: Start accepts. Automaton has 388 states and 493 transitions. Word has length 44 [2024-11-22 18:38:40,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:40,519 INFO L471 AbstractCegarLoop]: Abstraction has 388 states and 493 transitions. [2024-11-22 18:38:40,520 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 6.666666666666667) internal successors, (40), 6 states have internal predecessors, (40), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:38:40,520 INFO L276 IsEmpty]: Start isEmpty. Operand 388 states and 493 transitions. [2024-11-22 18:38:40,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 18:38:40,520 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:40,520 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:40,529 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-22 18:38:40,724 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,SelfDestructingSolverStorable28 [2024-11-22 18:38:40,725 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:40,725 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:40,725 INFO L85 PathProgramCache]: Analyzing trace with hash -1534969807, now seen corresponding path program 1 times [2024-11-22 18:38:40,725 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:40,725 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1438706501] [2024-11-22 18:38:40,726 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:40,726 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:40,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:40,781 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:40,782 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:40,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1438706501] [2024-11-22 18:38:40,782 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1438706501] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:40,782 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1480564802] [2024-11-22 18:38:40,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:40,783 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:40,783 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:40,784 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) [2024-11-22 18:38:40,786 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-22 18:38:40,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:40,873 INFO L255 TraceCheckSpWp]: Trace formula consists of 248 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:38:40,874 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:40,914 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:40,915 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:40,958 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:38:40,959 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1480564802] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:40,959 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:40,959 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 5] total 7 [2024-11-22 18:38:40,959 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [728943389] [2024-11-22 18:38:40,959 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:40,959 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:40,959 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:40,960 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:40,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:38:40,960 INFO L87 Difference]: Start difference. First operand 388 states and 493 transitions. Second operand has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 18:38:41,017 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:41,017 INFO L93 Difference]: Finished difference Result 1375 states and 1726 transitions. [2024-11-22 18:38:41,018 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:38:41,018 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 45 [2024-11-22 18:38:41,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:41,021 INFO L225 Difference]: With dead ends: 1375 [2024-11-22 18:38:41,021 INFO L226 Difference]: Without dead ends: 1375 [2024-11-22 18:38:41,022 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 96 GetRequests, 87 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=54, Unknown=0, NotChecked=0, Total=90 [2024-11-22 18:38:41,022 INFO L432 NwaCegarLoop]: 134 mSDtfsCounter, 418 mSDsluCounter, 645 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 418 SdHoareTripleChecker+Valid, 779 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:41,023 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [418 Valid, 779 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:41,024 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1375 states. [2024-11-22 18:38:41,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1375 to 919. [2024-11-22 18:38:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 919 states, 841 states have (on average 1.3721759809750298) internal successors, (1154), 878 states have internal predecessors, (1154), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 18:38:41,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 919 states to 919 states and 1216 transitions. [2024-11-22 18:38:41,039 INFO L78 Accepts]: Start accepts. Automaton has 919 states and 1216 transitions. Word has length 45 [2024-11-22 18:38:41,039 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:41,039 INFO L471 AbstractCegarLoop]: Abstraction has 919 states and 1216 transitions. [2024-11-22 18:38:41,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 15.714285714285714) internal successors, (110), 7 states have internal predecessors, (110), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2024-11-22 18:38:41,040 INFO L276 IsEmpty]: Start isEmpty. Operand 919 states and 1216 transitions. [2024-11-22 18:38:41,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 18:38:41,040 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:41,040 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:41,049 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-22 18:38:41,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:41,242 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:41,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:41,242 INFO L85 PathProgramCache]: Analyzing trace with hash -1536816849, now seen corresponding path program 1 times [2024-11-22 18:38:41,242 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:41,242 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1731191279] [2024-11-22 18:38:41,242 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:41,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:41,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:41,358 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:41,358 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1731191279] [2024-11-22 18:38:41,359 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1731191279] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:41,359 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1897513950] [2024-11-22 18:38:41,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:41,359 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:41,359 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:41,361 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) [2024-11-22 18:38:41,362 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-22 18:38:41,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:41,462 INFO L255 TraceCheckSpWp]: Trace formula consists of 251 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 18:38:41,464 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:41,687 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:41,688 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:41,688 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1897513950] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:41,688 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:41,688 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2024-11-22 18:38:41,688 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219347584] [2024-11-22 18:38:41,688 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:41,689 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:41,689 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:41,689 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:41,689 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:38:41,689 INFO L87 Difference]: Start difference. First operand 919 states and 1216 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:41,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:41,780 INFO L93 Difference]: Finished difference Result 942 states and 1239 transitions. [2024-11-22 18:38:41,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:41,780 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-22 18:38:41,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:41,782 INFO L225 Difference]: With dead ends: 942 [2024-11-22 18:38:41,783 INFO L226 Difference]: Without dead ends: 942 [2024-11-22 18:38:41,783 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:38:41,783 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 158 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 140 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:41,783 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 256 Invalid, 140 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:41,784 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 942 states. [2024-11-22 18:38:41,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 942 to 921. [2024-11-22 18:38:41,792 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 921 states, 843 states have (on average 1.3724792408066429) internal successors, (1157), 880 states have internal predecessors, (1157), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 18:38:41,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 921 states to 921 states and 1219 transitions. [2024-11-22 18:38:41,794 INFO L78 Accepts]: Start accepts. Automaton has 921 states and 1219 transitions. Word has length 45 [2024-11-22 18:38:41,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:41,794 INFO L471 AbstractCegarLoop]: Abstraction has 921 states and 1219 transitions. [2024-11-22 18:38:41,794 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:41,794 INFO L276 IsEmpty]: Start isEmpty. Operand 921 states and 1219 transitions. [2024-11-22 18:38:41,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-22 18:38:41,795 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:41,795 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:41,801 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-22 18:38:41,995 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:41,995 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:41,995 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:41,995 INFO L85 PathProgramCache]: Analyzing trace with hash -1536816787, now seen corresponding path program 1 times [2024-11-22 18:38:41,996 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:41,996 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1146535647] [2024-11-22 18:38:41,996 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:41,996 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:42,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:42,103 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:42,104 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1146535647] [2024-11-22 18:38:42,104 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1146535647] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:42,104 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1009897523] [2024-11-22 18:38:42,104 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:42,104 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:42,104 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:42,108 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:42,109 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-22 18:38:42,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:42,201 INFO L255 TraceCheckSpWp]: Trace formula consists of 252 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-22 18:38:42,203 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:42,392 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:42,392 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:42,392 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1009897523] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:42,392 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:42,392 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [7] total 12 [2024-11-22 18:38:42,392 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1660762064] [2024-11-22 18:38:42,392 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:42,393 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:38:42,393 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:42,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:38:42,393 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2024-11-22 18:38:42,393 INFO L87 Difference]: Start difference. First operand 921 states and 1219 transitions. Second operand has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:42,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:42,485 INFO L93 Difference]: Finished difference Result 941 states and 1237 transitions. [2024-11-22 18:38:42,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:38:42,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 45 [2024-11-22 18:38:42,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:42,488 INFO L225 Difference]: With dead ends: 941 [2024-11-22 18:38:42,488 INFO L226 Difference]: Without dead ends: 941 [2024-11-22 18:38:42,488 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:38:42,489 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 155 mSDsluCounter, 161 mSDsCounter, 0 mSdLazyCounter, 139 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 155 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 142 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:42,489 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [155 Valid, 256 Invalid, 142 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 139 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:42,489 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 941 states. [2024-11-22 18:38:42,497 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 941 to 918. [2024-11-22 18:38:42,497 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 918 states, 841 states have (on average 1.3697978596908442) internal successors, (1152), 877 states have internal predecessors, (1152), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 18:38:42,499 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 918 states to 918 states and 1214 transitions. [2024-11-22 18:38:42,499 INFO L78 Accepts]: Start accepts. Automaton has 918 states and 1214 transitions. Word has length 45 [2024-11-22 18:38:42,499 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:42,499 INFO L471 AbstractCegarLoop]: Abstraction has 918 states and 1214 transitions. [2024-11-22 18:38:42,499 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 7.166666666666667) internal successors, (43), 6 states have internal predecessors, (43), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:42,499 INFO L276 IsEmpty]: Start isEmpty. Operand 918 states and 1214 transitions. [2024-11-22 18:38:42,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2024-11-22 18:38:42,500 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:42,500 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:42,507 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2024-11-22 18:38:42,700 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:42,701 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:42,702 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:42,702 INFO L85 PathProgramCache]: Analyzing trace with hash 1040806822, now seen corresponding path program 1 times [2024-11-22 18:38:42,702 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:42,702 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096364809] [2024-11-22 18:38:42,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:42,702 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:42,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:43,733 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:43,733 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:43,733 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096364809] [2024-11-22 18:38:43,733 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1096364809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:43,733 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:43,734 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2024-11-22 18:38:43,734 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1740174028] [2024-11-22 18:38:43,734 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:43,734 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-11-22 18:38:43,734 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:43,735 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-11-22 18:38:43,735 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2024-11-22 18:38:43,735 INFO L87 Difference]: Start difference. First operand 918 states and 1214 transitions. Second operand has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:44,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:44,133 INFO L93 Difference]: Finished difference Result 939 states and 1237 transitions. [2024-11-22 18:38:44,133 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2024-11-22 18:38:44,133 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 48 [2024-11-22 18:38:44,134 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:44,136 INFO L225 Difference]: With dead ends: 939 [2024-11-22 18:38:44,136 INFO L226 Difference]: Without dead ends: 939 [2024-11-22 18:38:44,136 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 82 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=120, Invalid=386, Unknown=0, NotChecked=0, Total=506 [2024-11-22 18:38:44,136 INFO L432 NwaCegarLoop]: 117 mSDtfsCounter, 54 mSDsluCounter, 667 mSDsCounter, 0 mSdLazyCounter, 258 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 784 SdHoareTripleChecker+Invalid, 259 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 258 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:44,137 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 784 Invalid, 259 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 258 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:38:44,138 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 939 states. [2024-11-22 18:38:44,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 939 to 934. [2024-11-22 18:38:44,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 934 states, 857 states have (on average 1.3652275379229872) internal successors, (1170), 893 states have internal predecessors, (1170), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 18:38:44,150 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 934 states to 934 states and 1232 transitions. [2024-11-22 18:38:44,150 INFO L78 Accepts]: Start accepts. Automaton has 934 states and 1232 transitions. Word has length 48 [2024-11-22 18:38:44,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:44,150 INFO L471 AbstractCegarLoop]: Abstraction has 934 states and 1232 transitions. [2024-11-22 18:38:44,150 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 3.2857142857142856) internal successors, (46), 14 states have internal predecessors, (46), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:44,150 INFO L276 IsEmpty]: Start isEmpty. Operand 934 states and 1232 transitions. [2024-11-22 18:38:44,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-22 18:38:44,151 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:44,151 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:44,151 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2024-11-22 18:38:44,151 INFO L396 AbstractCegarLoop]: === Iteration 34 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:44,151 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:44,151 INFO L85 PathProgramCache]: Analyzing trace with hash -1279480752, now seen corresponding path program 1 times [2024-11-22 18:38:44,151 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:44,151 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2145686137] [2024-11-22 18:38:44,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:44,152 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:44,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:44,423 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:44,423 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2145686137] [2024-11-22 18:38:44,424 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2145686137] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:44,424 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:44,424 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-22 18:38:44,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1711983439] [2024-11-22 18:38:44,425 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:44,425 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 18:38:44,426 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:44,426 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 18:38:44,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:38:44,426 INFO L87 Difference]: Start difference. First operand 934 states and 1232 transitions. Second operand has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:44,632 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:44,633 INFO L93 Difference]: Finished difference Result 930 states and 1198 transitions. [2024-11-22 18:38:44,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-22 18:38:44,633 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-22 18:38:44,633 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:44,635 INFO L225 Difference]: With dead ends: 930 [2024-11-22 18:38:44,635 INFO L226 Difference]: Without dead ends: 930 [2024-11-22 18:38:44,636 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-22 18:38:44,636 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 137 mSDsluCounter, 947 mSDsCounter, 0 mSdLazyCounter, 262 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 1061 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 262 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:44,636 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 1061 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:38:44,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 930 states. [2024-11-22 18:38:44,646 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 930 to 911. [2024-11-22 18:38:44,650 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 911 states, 835 states have (on average 1.3377245508982036) internal successors, (1117), 870 states have internal predecessors, (1117), 31 states have call successors, (31), 9 states have call predecessors, (31), 9 states have return successors, (31), 31 states have call predecessors, (31), 31 states have call successors, (31) [2024-11-22 18:38:44,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 911 states to 911 states and 1179 transitions. [2024-11-22 18:38:44,654 INFO L78 Accepts]: Start accepts. Automaton has 911 states and 1179 transitions. Word has length 49 [2024-11-22 18:38:44,654 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:44,654 INFO L471 AbstractCegarLoop]: Abstraction has 911 states and 1179 transitions. [2024-11-22 18:38:44,654 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.9166666666666665) internal successors, (47), 10 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:44,654 INFO L276 IsEmpty]: Start isEmpty. Operand 911 states and 1179 transitions. [2024-11-22 18:38:44,655 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-22 18:38:44,655 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:44,655 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:44,655 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2024-11-22 18:38:44,655 INFO L396 AbstractCegarLoop]: === Iteration 35 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:44,655 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:44,656 INFO L85 PathProgramCache]: Analyzing trace with hash 1385225816, now seen corresponding path program 1 times [2024-11-22 18:38:44,656 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:44,656 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [751954495] [2024-11-22 18:38:44,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:44,656 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:44,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:45,659 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:45,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:45,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [751954495] [2024-11-22 18:38:45,660 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [751954495] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:45,660 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [927811772] [2024-11-22 18:38:45,660 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:45,660 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:45,660 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:45,662 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:45,663 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-22 18:38:45,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:45,773 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-11-22 18:38:45,775 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:45,898 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 [2024-11-22 18:38:46,150 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 [2024-11-22 18:38:46,269 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 25 treesize of output 20 [2024-11-22 18:38:46,407 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-22 18:38:46,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:46,411 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:46,411 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [927811772] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:46,411 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:46,411 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [19] total 31 [2024-11-22 18:38:46,411 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [272185037] [2024-11-22 18:38:46,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:46,412 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 18:38:46,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:46,412 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 18:38:46,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=893, Unknown=0, NotChecked=0, Total=992 [2024-11-22 18:38:46,413 INFO L87 Difference]: Start difference. First operand 911 states and 1179 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:46,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:46,993 INFO L93 Difference]: Finished difference Result 1490 states and 1921 transitions. [2024-11-22 18:38:46,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 18:38:46,994 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-22 18:38:46,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:46,997 INFO L225 Difference]: With dead ends: 1490 [2024-11-22 18:38:46,997 INFO L226 Difference]: Without dead ends: 1490 [2024-11-22 18:38:46,998 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=202, Invalid=1520, Unknown=0, NotChecked=0, Total=1722 [2024-11-22 18:38:46,998 INFO L432 NwaCegarLoop]: 122 mSDtfsCounter, 289 mSDsluCounter, 981 mSDsCounter, 0 mSdLazyCounter, 820 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 292 SdHoareTripleChecker+Valid, 1103 SdHoareTripleChecker+Invalid, 826 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 820 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:46,999 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [292 Valid, 1103 Invalid, 826 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 820 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 18:38:47,000 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1490 states. [2024-11-22 18:38:47,015 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1490 to 1131. [2024-11-22 18:38:47,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1131 states, 1029 states have (on average 1.3304178814382897) internal successors, (1369), 1080 states have internal predecessors, (1369), 53 states have call successors, (53), 14 states have call predecessors, (53), 14 states have return successors, (53), 36 states have call predecessors, (53), 53 states have call successors, (53) [2024-11-22 18:38:47,022 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1131 states to 1131 states and 1475 transitions. [2024-11-22 18:38:47,024 INFO L78 Accepts]: Start accepts. Automaton has 1131 states and 1475 transitions. Word has length 49 [2024-11-22 18:38:47,025 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:47,025 INFO L471 AbstractCegarLoop]: Abstraction has 1131 states and 1475 transitions. [2024-11-22 18:38:47,025 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:47,025 INFO L276 IsEmpty]: Start isEmpty. Operand 1131 states and 1475 transitions. [2024-11-22 18:38:47,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-22 18:38:47,026 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:47,026 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:47,038 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-22 18:38:47,227 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable34 [2024-11-22 18:38:47,227 INFO L396 AbstractCegarLoop]: === Iteration 36 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:47,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:47,228 INFO L85 PathProgramCache]: Analyzing trace with hash 1385225817, now seen corresponding path program 1 times [2024-11-22 18:38:47,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:47,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421597174] [2024-11-22 18:38:47,228 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:47,228 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:47,253 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:48,507 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:48,508 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:48,508 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421597174] [2024-11-22 18:38:48,509 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1421597174] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:48,509 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1438805705] [2024-11-22 18:38:48,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:48,509 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:48,509 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:48,511 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:48,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-22 18:38:48,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:48,622 INFO L255 TraceCheckSpWp]: Trace formula consists of 283 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-22 18:38:48,633 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:48,767 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 [2024-11-22 18:38:49,021 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 [2024-11-22 18:38:49,029 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 [2024-11-22 18:38:49,185 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 25 treesize of output 20 [2024-11-22 18:38:49,190 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 19 treesize of output 18 [2024-11-22 18:38:49,387 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-22 18:38:49,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:49,448 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:49,448 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1438805705] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:49,448 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:49,448 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [20] total 34 [2024-11-22 18:38:49,448 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1230378444] [2024-11-22 18:38:49,448 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:49,448 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 18:38:49,449 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:49,449 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 18:38:49,449 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1086, Unknown=0, NotChecked=0, Total=1190 [2024-11-22 18:38:49,449 INFO L87 Difference]: Start difference. First operand 1131 states and 1475 transitions. Second operand has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:50,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:50,041 INFO L93 Difference]: Finished difference Result 1615 states and 2094 transitions. [2024-11-22 18:38:50,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-22 18:38:50,041 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-22 18:38:50,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:50,045 INFO L225 Difference]: With dead ends: 1615 [2024-11-22 18:38:50,045 INFO L226 Difference]: Without dead ends: 1615 [2024-11-22 18:38:50,045 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 423 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=163, Invalid=1729, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 18:38:50,046 INFO L432 NwaCegarLoop]: 121 mSDtfsCounter, 306 mSDsluCounter, 1052 mSDsCounter, 0 mSdLazyCounter, 783 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 309 SdHoareTripleChecker+Valid, 1173 SdHoareTripleChecker+Invalid, 786 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 783 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:50,046 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [309 Valid, 1173 Invalid, 786 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 783 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-22 18:38:50,047 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1615 states. [2024-11-22 18:38:50,071 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1615 to 1267. [2024-11-22 18:38:50,075 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1267 states, 1157 states have (on average 1.3526361279170267) internal successors, (1565), 1210 states have internal predecessors, (1565), 58 states have call successors, (58), 17 states have call predecessors, (58), 17 states have return successors, (58), 39 states have call predecessors, (58), 58 states have call successors, (58) [2024-11-22 18:38:50,076 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1267 states to 1267 states and 1681 transitions. [2024-11-22 18:38:50,077 INFO L78 Accepts]: Start accepts. Automaton has 1267 states and 1681 transitions. Word has length 49 [2024-11-22 18:38:50,077 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:50,077 INFO L471 AbstractCegarLoop]: Abstraction has 1267 states and 1681 transitions. [2024-11-22 18:38:50,077 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.1333333333333333) internal successors, (47), 14 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:50,077 INFO L276 IsEmpty]: Start isEmpty. Operand 1267 states and 1681 transitions. [2024-11-22 18:38:50,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-22 18:38:50,082 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:50,082 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:50,093 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-22 18:38:50,282 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable35 [2024-11-22 18:38:50,282 INFO L396 AbstractCegarLoop]: === Iteration 37 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:50,283 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:50,283 INFO L85 PathProgramCache]: Analyzing trace with hash 1387072858, now seen corresponding path program 1 times [2024-11-22 18:38:50,283 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:50,283 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1644797502] [2024-11-22 18:38:50,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:50,283 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:50,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:50,584 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:50,584 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:50,584 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1644797502] [2024-11-22 18:38:50,584 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1644797502] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:50,585 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:50,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 18:38:50,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [36895363] [2024-11-22 18:38:50,585 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:50,585 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 18:38:50,585 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:50,586 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 18:38:50,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:38:50,587 INFO L87 Difference]: Start difference. First operand 1267 states and 1681 transitions. Second operand has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:50,972 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:50,973 INFO L93 Difference]: Finished difference Result 1627 states and 2191 transitions. [2024-11-22 18:38:50,973 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 18:38:50,973 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-22 18:38:50,973 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:50,976 INFO L225 Difference]: With dead ends: 1627 [2024-11-22 18:38:50,976 INFO L226 Difference]: Without dead ends: 1627 [2024-11-22 18:38:50,977 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:38:50,977 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 128 mSDsluCounter, 803 mSDsCounter, 0 mSdLazyCounter, 699 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 128 SdHoareTripleChecker+Valid, 935 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 699 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:50,977 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [128 Valid, 935 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 699 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:38:50,978 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2024-11-22 18:38:50,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1495. [2024-11-22 18:38:50,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1495 states, 1375 states have (on average 1.3614545454545455) internal successors, (1872), 1427 states have internal predecessors, (1872), 66 states have call successors, (66), 19 states have call predecessors, (66), 19 states have return successors, (66), 48 states have call predecessors, (66), 66 states have call successors, (66) [2024-11-22 18:38:50,991 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1495 states to 1495 states and 2004 transitions. [2024-11-22 18:38:50,991 INFO L78 Accepts]: Start accepts. Automaton has 1495 states and 2004 transitions. Word has length 49 [2024-11-22 18:38:50,991 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:50,991 INFO L471 AbstractCegarLoop]: Abstraction has 1495 states and 2004 transitions. [2024-11-22 18:38:50,991 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.7) internal successors, (47), 11 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:50,991 INFO L276 IsEmpty]: Start isEmpty. Operand 1495 states and 2004 transitions. [2024-11-22 18:38:50,992 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-22 18:38:50,992 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:50,992 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:50,992 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2024-11-22 18:38:50,992 INFO L396 AbstractCegarLoop]: === Iteration 38 === Targeting ULTIMATE.startErr52REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:50,993 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:50,993 INFO L85 PathProgramCache]: Analyzing trace with hash 1387072859, now seen corresponding path program 1 times [2024-11-22 18:38:50,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:50,993 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [754353207] [2024-11-22 18:38:50,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:50,993 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:51,548 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:51,548 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:51,548 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [754353207] [2024-11-22 18:38:51,548 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [754353207] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:51,549 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:38:51,549 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2024-11-22 18:38:51,549 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1984624891] [2024-11-22 18:38:51,549 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:51,549 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 18:38:51,549 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:51,550 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 18:38:51,550 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2024-11-22 18:38:51,550 INFO L87 Difference]: Start difference. First operand 1495 states and 2004 transitions. Second operand has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:52,093 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:52,093 INFO L93 Difference]: Finished difference Result 2910 states and 3920 transitions. [2024-11-22 18:38:52,094 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 18:38:52,094 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 49 [2024-11-22 18:38:52,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:52,101 INFO L225 Difference]: With dead ends: 2910 [2024-11-22 18:38:52,101 INFO L226 Difference]: Without dead ends: 2910 [2024-11-22 18:38:52,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 130 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=125, Invalid=577, Unknown=0, NotChecked=0, Total=702 [2024-11-22 18:38:52,101 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 228 mSDsluCounter, 728 mSDsCounter, 0 mSdLazyCounter, 621 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 228 SdHoareTripleChecker+Valid, 852 SdHoareTripleChecker+Invalid, 627 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 621 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:52,102 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [228 Valid, 852 Invalid, 627 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 621 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:38:52,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2024-11-22 18:38:52,136 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2721. [2024-11-22 18:38:52,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2721 states, 2526 states have (on average 1.3523357086302454) internal successors, (3416), 2596 states have internal predecessors, (3416), 125 states have call successors, (125), 35 states have call predecessors, (125), 35 states have return successors, (125), 89 states have call predecessors, (125), 125 states have call successors, (125) [2024-11-22 18:38:52,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2721 states to 2721 states and 3666 transitions. [2024-11-22 18:38:52,143 INFO L78 Accepts]: Start accepts. Automaton has 2721 states and 3666 transitions. Word has length 49 [2024-11-22 18:38:52,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:52,143 INFO L471 AbstractCegarLoop]: Abstraction has 2721 states and 3666 transitions. [2024-11-22 18:38:52,143 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 17 states have internal predecessors, (47), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:52,144 INFO L276 IsEmpty]: Start isEmpty. Operand 2721 states and 3666 transitions. [2024-11-22 18:38:52,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-22 18:38:52,144 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:52,144 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:52,144 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2024-11-22 18:38:52,145 INFO L396 AbstractCegarLoop]: === Iteration 39 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:52,145 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:52,145 INFO L85 PathProgramCache]: Analyzing trace with hash -7673948, now seen corresponding path program 1 times [2024-11-22 18:38:52,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:52,145 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2080837613] [2024-11-22 18:38:52,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:52,145 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:52,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:52,236 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:52,236 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:52,236 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2080837613] [2024-11-22 18:38:52,237 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2080837613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:52,237 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2906422] [2024-11-22 18:38:52,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:52,237 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:52,237 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:52,239 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:52,243 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-22 18:38:52,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:52,367 INFO L255 TraceCheckSpWp]: Trace formula consists of 285 conjuncts, 3 conjuncts are in the unsatisfiable core [2024-11-22 18:38:52,369 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:52,406 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:52,407 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:52,407 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2906422] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:52,407 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:52,407 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [4] total 5 [2024-11-22 18:38:52,407 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2035854173] [2024-11-22 18:38:52,407 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:52,407 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-22 18:38:52,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:52,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-22 18:38:52,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:52,408 INFO L87 Difference]: Start difference. First operand 2721 states and 3666 transitions. Second operand has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:52,432 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:52,433 INFO L93 Difference]: Finished difference Result 3733 states and 5089 transitions. [2024-11-22 18:38:52,433 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-22 18:38:52,434 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 50 [2024-11-22 18:38:52,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:52,445 INFO L225 Difference]: With dead ends: 3733 [2024-11-22 18:38:52,445 INFO L226 Difference]: Without dead ends: 3733 [2024-11-22 18:38:52,445 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 50 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:38:52,446 INFO L432 NwaCegarLoop]: 185 mSDtfsCounter, 191 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 194 SdHoareTripleChecker+Valid, 313 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:52,446 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [194 Valid, 313 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:38:52,448 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3733 states. [2024-11-22 18:38:52,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3733 to 3513. [2024-11-22 18:38:52,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3513 states, 3294 states have (on average 1.377959927140255) internal successors, (4539), 3364 states have internal predecessors, (4539), 149 states have call successors, (149), 35 states have call predecessors, (149), 35 states have return successors, (149), 113 states have call predecessors, (149), 149 states have call successors, (149) [2024-11-22 18:38:52,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3513 states to 3513 states and 4837 transitions. [2024-11-22 18:38:52,482 INFO L78 Accepts]: Start accepts. Automaton has 3513 states and 4837 transitions. Word has length 50 [2024-11-22 18:38:52,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:52,482 INFO L471 AbstractCegarLoop]: Abstraction has 3513 states and 4837 transitions. [2024-11-22 18:38:52,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 12.0) internal successors, (48), 4 states have internal predecessors, (48), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:38:52,482 INFO L276 IsEmpty]: Start isEmpty. Operand 3513 states and 4837 transitions. [2024-11-22 18:38:52,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-22 18:38:52,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:52,483 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:52,490 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-22 18:38:52,687 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable38 [2024-11-22 18:38:52,688 INFO L396 AbstractCegarLoop]: === Iteration 40 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:52,688 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:52,688 INFO L85 PathProgramCache]: Analyzing trace with hash -384530648, now seen corresponding path program 1 times [2024-11-22 18:38:52,688 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:52,689 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1015826275] [2024-11-22 18:38:52,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:52,689 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:52,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:53,258 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:38:53,258 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:53,258 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1015826275] [2024-11-22 18:38:53,258 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1015826275] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:53,259 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [886365983] [2024-11-22 18:38:53,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:53,259 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:53,259 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:53,260 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:53,261 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-22 18:38:53,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:53,377 INFO L255 TraceCheckSpWp]: Trace formula consists of 305 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 18:38:53,380 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:53,682 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-22 18:38:53,741 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 24 treesize of output 19 [2024-11-22 18:38:53,958 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:38:53,970 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:38:53,970 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2024-11-22 18:38:54,124 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:54,125 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:38:54,589 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 38 treesize of output 34 [2024-11-22 18:38:54,603 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:38:54,604 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:38:54,607 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 22 treesize of output 18 [2024-11-22 18:38:55,078 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:38:55,078 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [886365983] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:38:55,078 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:38:55,078 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 17, 19] total 50 [2024-11-22 18:38:55,078 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [994865487] [2024-11-22 18:38:55,079 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:38:55,079 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 50 states [2024-11-22 18:38:55,079 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:55,079 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 50 interpolants. [2024-11-22 18:38:55,080 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=186, Invalid=2264, Unknown=0, NotChecked=0, Total=2450 [2024-11-22 18:38:55,080 INFO L87 Difference]: Start difference. First operand 3513 states and 4837 transitions. Second operand has 50 states, 50 states have (on average 2.72) internal successors, (136), 47 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:38:58,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:38:58,110 INFO L93 Difference]: Finished difference Result 4097 states and 5441 transitions. [2024-11-22 18:38:58,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2024-11-22 18:38:58,111 INFO L78 Accepts]: Start accepts. Automaton has has 50 states, 50 states have (on average 2.72) internal successors, (136), 47 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 51 [2024-11-22 18:38:58,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:38:58,120 INFO L225 Difference]: With dead ends: 4097 [2024-11-22 18:38:58,120 INFO L226 Difference]: Without dead ends: 4081 [2024-11-22 18:38:58,123 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 184 GetRequests, 74 SyntacticMatches, 1 SemanticMatches, 109 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3098 ImplicationChecksByTransitivity, 3.1s TimeCoverageRelationStatistics Valid=1125, Invalid=11085, Unknown=0, NotChecked=0, Total=12210 [2024-11-22 18:38:58,123 INFO L432 NwaCegarLoop]: 126 mSDtfsCounter, 898 mSDsluCounter, 2762 mSDsCounter, 0 mSdLazyCounter, 1891 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 899 SdHoareTripleChecker+Valid, 2888 SdHoareTripleChecker+Invalid, 1923 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 1891 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 18:38:58,123 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [899 Valid, 2888 Invalid, 1923 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 1891 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 18:38:58,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4081 states. [2024-11-22 18:38:58,160 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4081 to 3627. [2024-11-22 18:38:58,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3627 states, 3395 states have (on average 1.3717231222385862) internal successors, (4657), 3466 states have internal predecessors, (4657), 157 states have call successors, (157), 40 states have call predecessors, (157), 40 states have return successors, (157), 120 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-22 18:38:58,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3627 states to 3627 states and 4971 transitions. [2024-11-22 18:38:58,169 INFO L78 Accepts]: Start accepts. Automaton has 3627 states and 4971 transitions. Word has length 51 [2024-11-22 18:38:58,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:38:58,169 INFO L471 AbstractCegarLoop]: Abstraction has 3627 states and 4971 transitions. [2024-11-22 18:38:58,169 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 50 states, 50 states have (on average 2.72) internal successors, (136), 47 states have internal predecessors, (136), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:38:58,169 INFO L276 IsEmpty]: Start isEmpty. Operand 3627 states and 4971 transitions. [2024-11-22 18:38:58,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-22 18:38:58,170 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:38:58,170 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:38:58,180 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2024-11-22 18:38:58,373 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable39 [2024-11-22 18:38:58,374 INFO L396 AbstractCegarLoop]: === Iteration 41 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:38:58,374 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:38:58,374 INFO L85 PathProgramCache]: Analyzing trace with hash 1216726984, now seen corresponding path program 1 times [2024-11-22 18:38:58,374 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:38:58,374 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [492286834] [2024-11-22 18:38:58,374 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:58,375 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:38:58,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:59,198 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:59,199 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:38:59,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [492286834] [2024-11-22 18:38:59,199 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [492286834] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:38:59,199 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [452435006] [2024-11-22 18:38:59,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:38:59,199 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:38:59,199 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:38:59,201 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:38:59,202 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-22 18:38:59,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:38:59,321 INFO L255 TraceCheckSpWp]: Trace formula consists of 297 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-11-22 18:38:59,324 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:38:59,630 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 [2024-11-22 18:38:59,737 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 25 treesize of output 20 [2024-11-22 18:38:59,867 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 12 [2024-11-22 18:38:59,874 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:38:59,874 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:38:59,874 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [452435006] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:38:59,874 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:38:59,874 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [18] total 30 [2024-11-22 18:38:59,874 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [80079062] [2024-11-22 18:38:59,874 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:38:59,874 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-22 18:38:59,874 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:38:59,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-22 18:38:59,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=836, Unknown=0, NotChecked=0, Total=930 [2024-11-22 18:38:59,875 INFO L87 Difference]: Start difference. First operand 3627 states and 4971 transitions. Second operand has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:39:00,384 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:00,384 INFO L93 Difference]: Finished difference Result 4302 states and 5779 transitions. [2024-11-22 18:39:00,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 18:39:00,385 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-22 18:39:00,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:00,398 INFO L225 Difference]: With dead ends: 4302 [2024-11-22 18:39:00,398 INFO L226 Difference]: Without dead ends: 4302 [2024-11-22 18:39:00,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 331 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=192, Invalid=1448, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 18:39:00,400 INFO L432 NwaCegarLoop]: 104 mSDtfsCounter, 303 mSDsluCounter, 1189 mSDsCounter, 0 mSdLazyCounter, 697 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 306 SdHoareTripleChecker+Valid, 1293 SdHoareTripleChecker+Invalid, 704 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 697 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:00,401 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [306 Valid, 1293 Invalid, 704 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 697 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-22 18:39:00,404 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4302 states. [2024-11-22 18:39:00,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4302 to 3643. [2024-11-22 18:39:00,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3643 states, 3411 states have (on average 1.3717384931105248) internal successors, (4679), 3482 states have internal predecessors, (4679), 157 states have call successors, (157), 40 states have call predecessors, (157), 40 states have return successors, (157), 120 states have call predecessors, (157), 157 states have call successors, (157) [2024-11-22 18:39:00,431 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3643 states to 3643 states and 4993 transitions. [2024-11-22 18:39:00,431 INFO L78 Accepts]: Start accepts. Automaton has 3643 states and 4993 transitions. Word has length 52 [2024-11-22 18:39:00,431 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:00,431 INFO L471 AbstractCegarLoop]: Abstraction has 3643 states and 4993 transitions. [2024-11-22 18:39:00,431 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.3333333333333335) internal successors, (50), 14 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:39:00,432 INFO L276 IsEmpty]: Start isEmpty. Operand 3643 states and 4993 transitions. [2024-11-22 18:39:00,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2024-11-22 18:39:00,432 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:00,432 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:00,441 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:00,636 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable40,13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:00,637 INFO L396 AbstractCegarLoop]: === Iteration 42 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:00,637 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:00,637 INFO L85 PathProgramCache]: Analyzing trace with hash 407380358, now seen corresponding path program 1 times [2024-11-22 18:39:00,637 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:00,637 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1199507995] [2024-11-22 18:39:00,638 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:00,638 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:00,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:00,802 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:00,802 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:00,802 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1199507995] [2024-11-22 18:39:00,802 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1199507995] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:00,802 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:39:00,802 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-22 18:39:00,802 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [559401768] [2024-11-22 18:39:00,803 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:00,803 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 18:39:00,803 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:00,803 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 18:39:00,803 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:39:00,803 INFO L87 Difference]: Start difference. First operand 3643 states and 4993 transitions. Second operand has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:39:01,030 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:01,030 INFO L93 Difference]: Finished difference Result 4104 states and 5653 transitions. [2024-11-22 18:39:01,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-11-22 18:39:01,031 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 52 [2024-11-22 18:39:01,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:01,036 INFO L225 Difference]: With dead ends: 4104 [2024-11-22 18:39:01,036 INFO L226 Difference]: Without dead ends: 4104 [2024-11-22 18:39:01,036 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 43 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:39:01,036 INFO L432 NwaCegarLoop]: 109 mSDtfsCounter, 136 mSDsluCounter, 487 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 136 SdHoareTripleChecker+Valid, 596 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:01,036 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [136 Valid, 596 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:39:01,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4104 states. [2024-11-22 18:39:01,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4104 to 4000. [2024-11-22 18:39:01,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4000 states, 3755 states have (on average 1.3818908122503328) internal successors, (5189), 3825 states have internal predecessors, (5189), 168 states have call successors, (168), 42 states have call predecessors, (168), 42 states have return successors, (168), 132 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-22 18:39:01,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4000 states to 4000 states and 5525 transitions. [2024-11-22 18:39:01,065 INFO L78 Accepts]: Start accepts. Automaton has 4000 states and 5525 transitions. Word has length 52 [2024-11-22 18:39:01,065 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:01,065 INFO L471 AbstractCegarLoop]: Abstraction has 4000 states and 5525 transitions. [2024-11-22 18:39:01,065 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 5.0) internal successors, (50), 11 states have internal predecessors, (50), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2024-11-22 18:39:01,065 INFO L276 IsEmpty]: Start isEmpty. Operand 4000 states and 5525 transitions. [2024-11-22 18:39:01,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-22 18:39:01,066 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:01,066 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:01,066 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable41 [2024-11-22 18:39:01,066 INFO L396 AbstractCegarLoop]: === Iteration 43 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:01,066 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:01,066 INFO L85 PathProgramCache]: Analyzing trace with hash -159124908, now seen corresponding path program 1 times [2024-11-22 18:39:01,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:01,067 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723832567] [2024-11-22 18:39:01,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:01,067 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:01,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:01,191 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:01,191 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:01,191 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723832567] [2024-11-22 18:39:01,191 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723832567] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:01,192 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:39:01,192 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-22 18:39:01,192 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581481158] [2024-11-22 18:39:01,192 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:01,192 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-22 18:39:01,192 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:01,193 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-22 18:39:01,193 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-22 18:39:01,193 INFO L87 Difference]: Start difference. First operand 4000 states and 5525 transitions. Second operand has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:01,344 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:01,345 INFO L93 Difference]: Finished difference Result 4022 states and 5434 transitions. [2024-11-22 18:39:01,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:39:01,345 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 53 [2024-11-22 18:39:01,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:01,352 INFO L225 Difference]: With dead ends: 4022 [2024-11-22 18:39:01,352 INFO L226 Difference]: Without dead ends: 4022 [2024-11-22 18:39:01,352 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:39:01,352 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 133 mSDsluCounter, 386 mSDsCounter, 0 mSdLazyCounter, 263 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 482 SdHoareTripleChecker+Invalid, 267 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 263 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:01,352 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 482 Invalid, 267 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 263 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:39:01,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4022 states. [2024-11-22 18:39:01,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4022 to 3997. [2024-11-22 18:39:01,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3997 states, 3755 states have (on average 1.3509986684420772) internal successors, (5073), 3822 states have internal predecessors, (5073), 168 states have call successors, (168), 42 states have call predecessors, (168), 42 states have return successors, (168), 132 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-22 18:39:01,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3997 states to 3997 states and 5409 transitions. [2024-11-22 18:39:01,434 INFO L78 Accepts]: Start accepts. Automaton has 3997 states and 5409 transitions. Word has length 53 [2024-11-22 18:39:01,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:01,435 INFO L471 AbstractCegarLoop]: Abstraction has 3997 states and 5409 transitions. [2024-11-22 18:39:01,435 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 6.714285714285714) internal successors, (47), 8 states have internal predecessors, (47), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:01,435 INFO L276 IsEmpty]: Start isEmpty. Operand 3997 states and 5409 transitions. [2024-11-22 18:39:01,436 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-22 18:39:01,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:01,440 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:01,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable42 [2024-11-22 18:39:01,440 INFO L396 AbstractCegarLoop]: === Iteration 44 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:01,441 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:01,441 INFO L85 PathProgramCache]: Analyzing trace with hash -2046489697, now seen corresponding path program 1 times [2024-11-22 18:39:01,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:01,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1954057572] [2024-11-22 18:39:01,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:01,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:01,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:02,351 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:02,351 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:02,351 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1954057572] [2024-11-22 18:39:02,352 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1954057572] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:02,352 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [502789912] [2024-11-22 18:39:02,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:02,352 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:02,352 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:02,354 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:02,359 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-22 18:39:02,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:02,510 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-22 18:39:02,513 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:02,621 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 [2024-11-22 18:39:02,811 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 [2024-11-22 18:39:02,867 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 22 [2024-11-22 18:39:03,001 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:03,001 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 30 treesize of output 12 [2024-11-22 18:39:03,015 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-11-22 18:39:03,015 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 [2024-11-22 18:39:03,031 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:03,031 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:03,215 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [502789912] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:03,215 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:39:03,215 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 15] total 34 [2024-11-22 18:39:03,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [85773359] [2024-11-22 18:39:03,215 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:03,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 35 states [2024-11-22 18:39:03,215 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:03,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 35 interpolants. [2024-11-22 18:39:03,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=121, Invalid=1361, Unknown=0, NotChecked=0, Total=1482 [2024-11-22 18:39:03,217 INFO L87 Difference]: Start difference. First operand 3997 states and 5409 transitions. Second operand has 35 states, 34 states have (on average 2.676470588235294) internal successors, (91), 30 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 18:39:04,876 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:04,877 INFO L93 Difference]: Finished difference Result 4937 states and 6598 transitions. [2024-11-22 18:39:04,877 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2024-11-22 18:39:04,877 INFO L78 Accepts]: Start accepts. Automaton has has 35 states, 34 states have (on average 2.676470588235294) internal successors, (91), 30 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 53 [2024-11-22 18:39:04,877 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:04,883 INFO L225 Difference]: With dead ends: 4937 [2024-11-22 18:39:04,883 INFO L226 Difference]: Without dead ends: 4937 [2024-11-22 18:39:04,884 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 128 GetRequests, 55 SyntacticMatches, 0 SemanticMatches, 73 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1350 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=656, Invalid=4894, Unknown=0, NotChecked=0, Total=5550 [2024-11-22 18:39:04,885 INFO L432 NwaCegarLoop]: 132 mSDtfsCounter, 813 mSDsluCounter, 2268 mSDsCounter, 0 mSdLazyCounter, 1744 mSolverCounterSat, 89 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 815 SdHoareTripleChecker+Valid, 2400 SdHoareTripleChecker+Invalid, 1833 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 89 IncrementalHoareTripleChecker+Valid, 1744 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:04,885 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [815 Valid, 2400 Invalid, 1833 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [89 Valid, 1744 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2024-11-22 18:39:04,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4937 states. [2024-11-22 18:39:04,909 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4937 to 4147. [2024-11-22 18:39:04,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 3905 states have (on average 1.342125480153649) internal successors, (5241), 3960 states have internal predecessors, (5241), 168 states have call successors, (168), 42 states have call predecessors, (168), 42 states have return successors, (168), 144 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-22 18:39:04,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5577 transitions. [2024-11-22 18:39:04,915 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5577 transitions. Word has length 53 [2024-11-22 18:39:04,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:04,915 INFO L471 AbstractCegarLoop]: Abstraction has 4147 states and 5577 transitions. [2024-11-22 18:39:04,915 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 35 states, 34 states have (on average 2.676470588235294) internal successors, (91), 30 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 18:39:04,915 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5577 transitions. [2024-11-22 18:39:04,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2024-11-22 18:39:04,916 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:04,917 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:04,923 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:05,117 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable43 [2024-11-22 18:39:05,117 INFO L396 AbstractCegarLoop]: === Iteration 45 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:05,118 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:05,118 INFO L85 PathProgramCache]: Analyzing trace with hash -2046489696, now seen corresponding path program 1 times [2024-11-22 18:39:05,118 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:05,118 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1584555085] [2024-11-22 18:39:05,118 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:05,118 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:05,146 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:06,433 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:06,434 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1584555085] [2024-11-22 18:39:06,434 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1584555085] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:06,434 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [344646613] [2024-11-22 18:39:06,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:06,435 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:06,435 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:06,437 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:06,438 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-22 18:39:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:06,579 INFO L255 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 79 conjuncts are in the unsatisfiable core [2024-11-22 18:39:06,581 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:06,686 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 [2024-11-22 18:39:06,693 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 [2024-11-22 18:39:06,934 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 [2024-11-22 18:39:06,942 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 [2024-11-22 18:39:07,031 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2024-11-22 18:39:07,047 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 36 treesize of output 27 [2024-11-22 18:39:07,301 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 17 [2024-11-22 18:39:07,349 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:39:07,350 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 [2024-11-22 18:39:07,356 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 18:39:07,358 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-22 18:39:07,389 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 11 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:07,390 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:07,776 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [344646613] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:07,776 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:39:07,776 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23, 16] total 37 [2024-11-22 18:39:07,776 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [712576184] [2024-11-22 18:39:07,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:07,777 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-22 18:39:07,777 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:07,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-22 18:39:07,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1750, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 18:39:07,778 INFO L87 Difference]: Start difference. First operand 4147 states and 5577 transitions. Second operand has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 18:39:10,594 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:10,595 INFO L93 Difference]: Finished difference Result 4934 states and 6570 transitions. [2024-11-22 18:39:10,595 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 55 states. [2024-11-22 18:39:10,595 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 53 [2024-11-22 18:39:10,595 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:10,601 INFO L225 Difference]: With dead ends: 4934 [2024-11-22 18:39:10,601 INFO L226 Difference]: Without dead ends: 4934 [2024-11-22 18:39:10,603 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 134 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 83 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1760 ImplicationChecksByTransitivity, 2.8s TimeCoverageRelationStatistics Valid=768, Invalid=6372, Unknown=0, NotChecked=0, Total=7140 [2024-11-22 18:39:10,603 INFO L432 NwaCegarLoop]: 125 mSDtfsCounter, 740 mSDsluCounter, 2630 mSDsCounter, 0 mSdLazyCounter, 2354 mSolverCounterSat, 66 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 742 SdHoareTripleChecker+Valid, 2755 SdHoareTripleChecker+Invalid, 2420 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 66 IncrementalHoareTripleChecker+Valid, 2354 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:10,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [742 Valid, 2755 Invalid, 2420 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [66 Valid, 2354 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-22 18:39:10,605 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4934 states. [2024-11-22 18:39:10,634 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4934 to 4147. [2024-11-22 18:39:10,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 4147 states, 3905 states have (on average 1.3375160051216388) internal successors, (5223), 3960 states have internal predecessors, (5223), 168 states have call successors, (168), 42 states have call predecessors, (168), 42 states have return successors, (168), 144 states have call predecessors, (168), 168 states have call successors, (168) [2024-11-22 18:39:10,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4147 states to 4147 states and 5559 transitions. [2024-11-22 18:39:10,641 INFO L78 Accepts]: Start accepts. Automaton has 4147 states and 5559 transitions. Word has length 53 [2024-11-22 18:39:10,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:10,641 INFO L471 AbstractCegarLoop]: Abstraction has 4147 states and 5559 transitions. [2024-11-22 18:39:10,641 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 2.324324324324324) internal successors, (86), 33 states have internal predecessors, (86), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2024-11-22 18:39:10,641 INFO L276 IsEmpty]: Start isEmpty. Operand 4147 states and 5559 transitions. [2024-11-22 18:39:10,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-22 18:39:10,642 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:10,642 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:10,655 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-22 18:39:10,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable44,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:10,847 INFO L396 AbstractCegarLoop]: === Iteration 46 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:10,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:10,847 INFO L85 PathProgramCache]: Analyzing trace with hash -2010110243, now seen corresponding path program 1 times [2024-11-22 18:39:10,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:10,848 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1454305844] [2024-11-22 18:39:10,848 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:10,848 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:10,894 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:10,895 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:10,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1454305844] [2024-11-22 18:39:10,895 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1454305844] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:10,895 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1535466257] [2024-11-22 18:39:10,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:10,895 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:10,896 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:10,897 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:10,897 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-22 18:39:11,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:11,041 INFO L255 TraceCheckSpWp]: Trace formula consists of 309 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-22 18:39:11,042 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:11,084 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:11,085 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:11,134 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:11,134 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1535466257] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:39:11,134 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:39:11,136 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 4, 4] total 5 [2024-11-22 18:39:11,136 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554278859] [2024-11-22 18:39:11,136 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:11,136 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-22 18:39:11,136 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:11,137 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-22 18:39:11,137 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:39:11,137 INFO L87 Difference]: Start difference. First operand 4147 states and 5559 transitions. Second operand has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:11,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:11,174 INFO L93 Difference]: Finished difference Result 8103 states and 10942 transitions. [2024-11-22 18:39:11,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-22 18:39:11,174 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 55 [2024-11-22 18:39:11,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:11,182 INFO L225 Difference]: With dead ends: 8103 [2024-11-22 18:39:11,183 INFO L226 Difference]: Without dead ends: 8103 [2024-11-22 18:39:11,183 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 108 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=10, Unknown=0, NotChecked=0, Total=20 [2024-11-22 18:39:11,183 INFO L432 NwaCegarLoop]: 192 mSDtfsCounter, 342 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 346 SdHoareTripleChecker+Valid, 568 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:11,183 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [346 Valid, 568 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:39:11,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8103 states. [2024-11-22 18:39:11,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8103 to 6291. [2024-11-22 18:39:11,236 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6291 states, 5967 states have (on average 1.3519356460532932) internal successors, (8067), 6030 states have internal predecessors, (8067), 250 states have call successors, (250), 42 states have call predecessors, (250), 42 states have return successors, (250), 218 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-22 18:39:11,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6291 states to 6291 states and 8567 transitions. [2024-11-22 18:39:11,243 INFO L78 Accepts]: Start accepts. Automaton has 6291 states and 8567 transitions. Word has length 55 [2024-11-22 18:39:11,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:11,243 INFO L471 AbstractCegarLoop]: Abstraction has 6291 states and 8567 transitions. [2024-11-22 18:39:11,243 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 16.2) internal successors, (81), 5 states have internal predecessors, (81), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:11,243 INFO L276 IsEmpty]: Start isEmpty. Operand 6291 states and 8567 transitions. [2024-11-22 18:39:11,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 18:39:11,244 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:11,244 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:11,253 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Ended with exit code 0 [2024-11-22 18:39:11,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable45,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:11,448 INFO L396 AbstractCegarLoop]: === Iteration 47 === Targeting ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:11,448 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:11,448 INFO L85 PathProgramCache]: Analyzing trace with hash 1153867704, now seen corresponding path program 1 times [2024-11-22 18:39:11,448 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:11,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [952284667] [2024-11-22 18:39:11,449 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:11,449 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:11,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:11,549 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-22 18:39:11,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:11,550 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [952284667] [2024-11-22 18:39:11,550 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [952284667] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:11,550 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:39:11,550 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-22 18:39:11,550 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1060273621] [2024-11-22 18:39:11,550 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:11,551 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-22 18:39:11,551 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:11,551 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-22 18:39:11,551 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:39:11,551 INFO L87 Difference]: Start difference. First operand 6291 states and 8567 transitions. Second operand has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:39:11,608 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:11,608 INFO L93 Difference]: Finished difference Result 6301 states and 8555 transitions. [2024-11-22 18:39:11,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-22 18:39:11,609 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 56 [2024-11-22 18:39:11,609 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:11,614 INFO L225 Difference]: With dead ends: 6301 [2024-11-22 18:39:11,615 INFO L226 Difference]: Without dead ends: 6301 [2024-11-22 18:39:11,615 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-22 18:39:11,615 INFO L432 NwaCegarLoop]: 119 mSDtfsCounter, 32 mSDsluCounter, 509 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 628 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:11,615 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 628 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-22 18:39:11,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6301 states. [2024-11-22 18:39:11,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6301 to 6289. [2024-11-22 18:39:11,659 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6289 states, 5967 states have (on average 1.3479135243841127) internal successors, (8043), 6028 states have internal predecessors, (8043), 250 states have call successors, (250), 42 states have call predecessors, (250), 42 states have return successors, (250), 218 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-22 18:39:11,665 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6289 states to 6289 states and 8543 transitions. [2024-11-22 18:39:11,666 INFO L78 Accepts]: Start accepts. Automaton has 6289 states and 8543 transitions. Word has length 56 [2024-11-22 18:39:11,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:11,666 INFO L471 AbstractCegarLoop]: Abstraction has 6289 states and 8543 transitions. [2024-11-22 18:39:11,666 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 8.333333333333334) internal successors, (50), 6 states have internal predecessors, (50), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:39:11,666 INFO L276 IsEmpty]: Start isEmpty. Operand 6289 states and 8543 transitions. [2024-11-22 18:39:11,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 18:39:11,667 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:11,667 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:11,667 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable46 [2024-11-22 18:39:11,667 INFO L396 AbstractCegarLoop]: === Iteration 48 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:11,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:11,668 INFO L85 PathProgramCache]: Analyzing trace with hash 2111090623, now seen corresponding path program 1 times [2024-11-22 18:39:11,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:11,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1138038600] [2024-11-22 18:39:11,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:11,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:11,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:12,414 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:12,415 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:12,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1138038600] [2024-11-22 18:39:12,415 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1138038600] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:12,415 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [513864350] [2024-11-22 18:39:12,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:12,416 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:12,416 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:12,417 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:12,418 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Waiting until timeout for monitored process [2024-11-22 18:39:12,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:12,598 INFO L255 TraceCheckSpWp]: Trace formula consists of 311 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-11-22 18:39:12,601 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:13,085 INFO L349 Elim1Store]: treesize reduction 17, result has 46.9 percent of original size [2024-11-22 18:39:13,086 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 30 [2024-11-22 18:39:13,368 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:39:13,369 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:39:13,386 INFO L349 Elim1Store]: treesize reduction 64, result has 19.0 percent of original size [2024-11-22 18:39:13,386 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 75 treesize of output 69 [2024-11-22 18:39:13,868 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:13,869 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 107 treesize of output 75 [2024-11-22 18:39:14,120 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:14,120 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:19,010 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [513864350] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:19,010 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:39:19,010 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20, 15] total 35 [2024-11-22 18:39:19,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1069936683] [2024-11-22 18:39:19,011 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:19,011 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2024-11-22 18:39:19,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:19,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2024-11-22 18:39:19,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=175, Invalid=2080, Unknown=1, NotChecked=0, Total=2256 [2024-11-22 18:39:19,012 INFO L87 Difference]: Start difference. First operand 6289 states and 8543 transitions. Second operand has 36 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:21,434 INFO L93 Difference]: Finished difference Result 6539 states and 8866 transitions. [2024-11-22 18:39:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2024-11-22 18:39:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-22 18:39:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:21,440 INFO L225 Difference]: With dead ends: 6539 [2024-11-22 18:39:21,440 INFO L226 Difference]: Without dead ends: 6528 [2024-11-22 18:39:21,441 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 66 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 800 ImplicationChecksByTransitivity, 6.6s TimeCoverageRelationStatistics Valid=405, Invalid=4150, Unknown=1, NotChecked=0, Total=4556 [2024-11-22 18:39:21,442 INFO L432 NwaCegarLoop]: 123 mSDtfsCounter, 226 mSDsluCounter, 2715 mSDsCounter, 0 mSdLazyCounter, 1998 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 226 SdHoareTripleChecker+Valid, 2838 SdHoareTripleChecker+Invalid, 2020 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1998 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:21,442 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [226 Valid, 2838 Invalid, 2020 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1998 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2024-11-22 18:39:21,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6528 states. [2024-11-22 18:39:21,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6528 to 6318. [2024-11-22 18:39:21,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6318 states, 5996 states have (on average 1.3477318212141427) internal successors, (8081), 6057 states have internal predecessors, (8081), 250 states have call successors, (250), 42 states have call predecessors, (250), 42 states have return successors, (250), 218 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-22 18:39:21,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6318 states to 6318 states and 8581 transitions. [2024-11-22 18:39:21,492 INFO L78 Accepts]: Start accepts. Automaton has 6318 states and 8581 transitions. Word has length 56 [2024-11-22 18:39:21,492 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:21,492 INFO L471 AbstractCegarLoop]: Abstraction has 6318 states and 8581 transitions. [2024-11-22 18:39:21,492 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 35 states have (on average 3.085714285714286) internal successors, (108), 34 states have internal predecessors, (108), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:21,492 INFO L276 IsEmpty]: Start isEmpty. Operand 6318 states and 8581 transitions. [2024-11-22 18:39:21,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2024-11-22 18:39:21,493 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:21,493 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:21,503 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (17)] Ended with exit code 0 [2024-11-22 18:39:21,697 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable47 [2024-11-22 18:39:21,698 INFO L396 AbstractCegarLoop]: === Iteration 49 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:21,698 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:21,698 INFO L85 PathProgramCache]: Analyzing trace with hash -1925711235, now seen corresponding path program 1 times [2024-11-22 18:39:21,698 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:21,698 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091192475] [2024-11-22 18:39:21,698 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:21,699 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:21,952 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:21,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091192475] [2024-11-22 18:39:21,953 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091192475] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:21,953 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [519729294] [2024-11-22 18:39:21,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:21,953 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:21,953 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:21,954 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:21,959 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Waiting until timeout for monitored process [2024-11-22 18:39:22,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:22,109 INFO L255 TraceCheckSpWp]: Trace formula consists of 312 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-22 18:39:22,111 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:22,491 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 19 treesize of output 1 [2024-11-22 18:39:22,709 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:39:22,709 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 41 treesize of output 17 [2024-11-22 18:39:22,728 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 13 treesize of output 9 [2024-11-22 18:39:22,757 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:22,757 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:22,804 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 44 treesize of output 38 [2024-11-22 18:39:26,833 WARN L851 $PredicateComparison]: unable to prove that (let ((.cse0 (forall ((v_arrayElimCell_40 Int) (v_antiDerIndex_entry0_1 Int)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select (store |c_#valid| v_arrayElimCell_40 0) v_antiDerIndex_entry0_1)))) (.cse1 (= |c_~#list~0.offset| |c_ULTIMATE.start_append_one_~list#1.offset|)) (.cse4 (= |c_~#list~0.base| |c_ULTIMATE.start_append_one_~list#1.base|)) (.cse3 (store |c_#valid| |c_ULTIMATE.start_append_one_~item~1#1.base| 0))) (and (or .cse0 .cse1) (forall ((v_arrayElimCell_40 Int) (v_antiDerIndex_entry0_1 Int)) (let ((.cse2 (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1))) (or (= .cse2 (select .cse3 v_antiDerIndex_entry0_1)) (= .cse2 (select (store |c_#valid| v_arrayElimCell_40 0) v_antiDerIndex_entry0_1))))) (or .cse0 .cse4) (or (not .cse1) (not .cse4) (forall ((v_antiDerIndex_entry0_1 Int)) (= (select |c_ULTIMATE.start_main_old_#valid#1| v_antiDerIndex_entry0_1) (select .cse3 v_antiDerIndex_entry0_1)))))) is different from false [2024-11-22 18:39:27,596 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [519729294] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:27,596 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-22 18:39:27,596 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 13] total 22 [2024-11-22 18:39:27,597 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [59954480] [2024-11-22 18:39:27,597 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:27,597 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-11-22 18:39:27,597 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:27,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-11-22 18:39:27,598 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=778, Unknown=1, NotChecked=56, Total=930 [2024-11-22 18:39:27,598 INFO L87 Difference]: Start difference. First operand 6318 states and 8581 transitions. Second operand has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:28,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:28,346 INFO L93 Difference]: Finished difference Result 6531 states and 8857 transitions. [2024-11-22 18:39:28,346 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 18:39:28,346 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2024-11-22 18:39:28,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:28,352 INFO L225 Difference]: With dead ends: 6531 [2024-11-22 18:39:28,352 INFO L226 Difference]: Without dead ends: 6517 [2024-11-22 18:39:28,353 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 82 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 244 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=150, Invalid=1259, Unknown=1, NotChecked=72, Total=1482 [2024-11-22 18:39:28,353 INFO L432 NwaCegarLoop]: 124 mSDtfsCounter, 352 mSDsluCounter, 1328 mSDsCounter, 0 mSdLazyCounter, 1009 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 355 SdHoareTripleChecker+Valid, 1452 SdHoareTripleChecker+Invalid, 1018 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 1009 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:28,353 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [355 Valid, 1452 Invalid, 1018 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 1009 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 18:39:28,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6517 states. [2024-11-22 18:39:28,446 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6517 to 6312. [2024-11-22 18:39:28,451 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 6312 states, 5990 states have (on average 1.3475792988313857) internal successors, (8072), 6051 states have internal predecessors, (8072), 250 states have call successors, (250), 42 states have call predecessors, (250), 42 states have return successors, (250), 218 states have call predecessors, (250), 250 states have call successors, (250) [2024-11-22 18:39:28,458 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6312 states to 6312 states and 8572 transitions. [2024-11-22 18:39:28,458 INFO L78 Accepts]: Start accepts. Automaton has 6312 states and 8572 transitions. Word has length 56 [2024-11-22 18:39:28,459 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:28,459 INFO L471 AbstractCegarLoop]: Abstraction has 6312 states and 8572 transitions. [2024-11-22 18:39:28,459 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.636363636363637) internal successors, (102), 23 states have internal predecessors, (102), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:28,459 INFO L276 IsEmpty]: Start isEmpty. Operand 6312 states and 8572 transitions. [2024-11-22 18:39:28,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2024-11-22 18:39:28,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:28,461 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:28,469 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (18)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:28,665 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable48 [2024-11-22 18:39:28,667 INFO L396 AbstractCegarLoop]: === Iteration 50 === Targeting ULTIMATE.startErr33ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:28,668 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:28,668 INFO L85 PathProgramCache]: Analyzing trace with hash 1410137754, now seen corresponding path program 1 times [2024-11-22 18:39:28,668 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:28,668 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [491429880] [2024-11-22 18:39:28,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:28,668 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:29,025 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-22 18:39:29,025 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:29,025 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [491429880] [2024-11-22 18:39:29,025 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [491429880] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:29,025 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:39:29,025 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 18:39:29,025 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [931550386] [2024-11-22 18:39:29,026 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:29,026 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-22 18:39:29,026 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:29,026 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-22 18:39:29,026 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-22 18:39:29,026 INFO L87 Difference]: Start difference. First operand 6312 states and 8572 transitions. Second operand has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:39:29,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:29,310 INFO L93 Difference]: Finished difference Result 7799 states and 10587 transitions. [2024-11-22 18:39:29,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-22 18:39:29,310 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 57 [2024-11-22 18:39:29,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:29,318 INFO L225 Difference]: With dead ends: 7799 [2024-11-22 18:39:29,318 INFO L226 Difference]: Without dead ends: 7799 [2024-11-22 18:39:29,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 51 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2024-11-22 18:39:29,320 INFO L432 NwaCegarLoop]: 100 mSDtfsCounter, 156 mSDsluCounter, 685 mSDsCounter, 0 mSdLazyCounter, 338 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 785 SdHoareTripleChecker+Invalid, 339 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 338 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:29,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 785 Invalid, 339 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 338 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:39:29,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7799 states. [2024-11-22 18:39:29,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7799 to 7569. [2024-11-22 18:39:29,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7569 states, 7192 states have (on average 1.3489988876529477) internal successors, (9702), 7255 states have internal predecessors, (9702), 297 states have call successors, (297), 50 states have call predecessors, (297), 50 states have return successors, (297), 263 states have call predecessors, (297), 297 states have call successors, (297) [2024-11-22 18:39:29,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7569 states to 7569 states and 10296 transitions. [2024-11-22 18:39:29,385 INFO L78 Accepts]: Start accepts. Automaton has 7569 states and 10296 transitions. Word has length 57 [2024-11-22 18:39:29,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:29,385 INFO L471 AbstractCegarLoop]: Abstraction has 7569 states and 10296 transitions. [2024-11-22 18:39:29,385 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.454545454545454) internal successors, (49), 12 states have internal predecessors, (49), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-11-22 18:39:29,385 INFO L276 IsEmpty]: Start isEmpty. Operand 7569 states and 10296 transitions. [2024-11-22 18:39:29,386 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-22 18:39:29,386 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:29,386 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:29,386 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable49 [2024-11-22 18:39:29,386 INFO L396 AbstractCegarLoop]: === Iteration 51 === Targeting ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:29,386 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:29,387 INFO L85 PathProgramCache]: Analyzing trace with hash 765305624, now seen corresponding path program 1 times [2024-11-22 18:39:29,387 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:29,387 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [216184620] [2024-11-22 18:39:29,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:29,387 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:29,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:29,918 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:39:29,918 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:29,919 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [216184620] [2024-11-22 18:39:29,919 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [216184620] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:29,920 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1192035519] [2024-11-22 18:39:29,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:29,920 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:29,920 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:29,921 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:29,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2024-11-22 18:39:30,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:30,091 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-22 18:39:30,094 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:30,180 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 [2024-11-22 18:39:30,350 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 [2024-11-22 18:39:30,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 22 [2024-11-22 18:39:30,594 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:30,595 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 32 treesize of output 12 [2024-11-22 18:39:30,623 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:30,624 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:39:30,624 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1192035519] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:30,624 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:39:30,624 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [12] total 27 [2024-11-22 18:39:30,624 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1099870090] [2024-11-22 18:39:30,624 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:30,624 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-22 18:39:30,625 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:30,625 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-22 18:39:30,625 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=625, Unknown=0, NotChecked=0, Total=702 [2024-11-22 18:39:30,625 INFO L87 Difference]: Start difference. First operand 7569 states and 10296 transitions. Second operand has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:31,310 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:31,310 INFO L93 Difference]: Finished difference Result 8301 states and 11173 transitions. [2024-11-22 18:39:31,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 18:39:31,310 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2024-11-22 18:39:31,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:31,319 INFO L225 Difference]: With dead ends: 8301 [2024-11-22 18:39:31,319 INFO L226 Difference]: Without dead ends: 8301 [2024-11-22 18:39:31,319 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 280 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=139, Invalid=1193, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 18:39:31,320 INFO L432 NwaCegarLoop]: 139 mSDtfsCounter, 234 mSDsluCounter, 1354 mSDsCounter, 0 mSdLazyCounter, 1050 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 236 SdHoareTripleChecker+Valid, 1493 SdHoareTripleChecker+Invalid, 1053 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 1050 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:31,320 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [236 Valid, 1493 Invalid, 1053 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 1050 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 18:39:31,323 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8301 states. [2024-11-22 18:39:31,372 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8301 to 7661. [2024-11-22 18:39:31,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7661 states, 7285 states have (on average 1.3472889498970488) internal successors, (9815), 7347 states have internal predecessors, (9815), 297 states have call successors, (297), 50 states have call predecessors, (297), 50 states have return successors, (297), 263 states have call predecessors, (297), 297 states have call successors, (297) [2024-11-22 18:39:31,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7661 states to 7661 states and 10409 transitions. [2024-11-22 18:39:31,385 INFO L78 Accepts]: Start accepts. Automaton has 7661 states and 10409 transitions. Word has length 58 [2024-11-22 18:39:31,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:31,386 INFO L471 AbstractCegarLoop]: Abstraction has 7661 states and 10409 transitions. [2024-11-22 18:39:31,386 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.375) internal successors, (54), 14 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:31,386 INFO L276 IsEmpty]: Start isEmpty. Operand 7661 states and 10409 transitions. [2024-11-22 18:39:31,387 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-22 18:39:31,387 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:31,387 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:31,394 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2024-11-22 18:39:31,590 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable50,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:31,590 INFO L396 AbstractCegarLoop]: === Iteration 52 === Targeting ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:31,591 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:31,591 INFO L85 PathProgramCache]: Analyzing trace with hash 765305625, now seen corresponding path program 1 times [2024-11-22 18:39:31,591 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:31,591 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2036919065] [2024-11-22 18:39:31,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:31,591 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:31,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:32,294 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:39:32,294 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2036919065] [2024-11-22 18:39:32,294 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2036919065] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:32,294 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [329580078] [2024-11-22 18:39:32,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:32,295 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:32,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:32,296 INFO L229 MonitoredProcess]: Starting monitored process 20 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:32,297 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Waiting until timeout for monitored process [2024-11-22 18:39:32,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:32,456 INFO L255 TraceCheckSpWp]: Trace formula consists of 346 conjuncts, 69 conjuncts are in the unsatisfiable core [2024-11-22 18:39:32,459 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:32,535 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 [2024-11-22 18:39:32,703 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 [2024-11-22 18:39:32,706 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 [2024-11-22 18:39:32,783 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 21 treesize of output 20 [2024-11-22 18:39:32,787 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 27 treesize of output 22 [2024-11-22 18:39:33,077 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 12 [2024-11-22 18:39:33,138 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:33,138 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:39:33,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [329580078] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:33,138 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:39:33,138 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [18] total 34 [2024-11-22 18:39:33,138 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168683775] [2024-11-22 18:39:33,138 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:33,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-22 18:39:33,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:33,139 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-22 18:39:33,139 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=1018, Unknown=0, NotChecked=0, Total=1122 [2024-11-22 18:39:33,139 INFO L87 Difference]: Start difference. First operand 7661 states and 10409 transitions. Second operand has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:33,965 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:33,965 INFO L93 Difference]: Finished difference Result 8417 states and 11276 transitions. [2024-11-22 18:39:33,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2024-11-22 18:39:33,966 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 58 [2024-11-22 18:39:33,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:33,974 INFO L225 Difference]: With dead ends: 8417 [2024-11-22 18:39:33,975 INFO L226 Difference]: Without dead ends: 8417 [2024-11-22 18:39:33,975 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 490 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=172, Invalid=1720, Unknown=0, NotChecked=0, Total=1892 [2024-11-22 18:39:33,976 INFO L432 NwaCegarLoop]: 144 mSDtfsCounter, 252 mSDsluCounter, 1624 mSDsCounter, 0 mSdLazyCounter, 943 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 254 SdHoareTripleChecker+Valid, 1768 SdHoareTripleChecker+Invalid, 944 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 943 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:33,976 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [254 Valid, 1768 Invalid, 944 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 943 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-11-22 18:39:33,979 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8417 states. [2024-11-22 18:39:34,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8417 to 7685. [2024-11-22 18:39:34,031 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7685 states, 7309 states have (on average 1.3456013134491722) internal successors, (9835), 7371 states have internal predecessors, (9835), 297 states have call successors, (297), 50 states have call predecessors, (297), 50 states have return successors, (297), 263 states have call predecessors, (297), 297 states have call successors, (297) [2024-11-22 18:39:34,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7685 states to 7685 states and 10429 transitions. [2024-11-22 18:39:34,040 INFO L78 Accepts]: Start accepts. Automaton has 7685 states and 10429 transitions. Word has length 58 [2024-11-22 18:39:34,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:34,040 INFO L471 AbstractCegarLoop]: Abstraction has 7685 states and 10429 transitions. [2024-11-22 18:39:34,040 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 3.176470588235294) internal successors, (54), 15 states have internal predecessors, (54), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:34,040 INFO L276 IsEmpty]: Start isEmpty. Operand 7685 states and 10429 transitions. [2024-11-22 18:39:34,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2024-11-22 18:39:34,041 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:34,041 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:34,048 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (20)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:34,241 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable51,20 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:34,242 INFO L396 AbstractCegarLoop]: === Iteration 53 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:34,242 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:34,243 INFO L85 PathProgramCache]: Analyzing trace with hash 764597623, now seen corresponding path program 1 times [2024-11-22 18:39:34,243 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:34,243 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1972959125] [2024-11-22 18:39:34,243 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:34,243 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:34,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:34,821 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:34,822 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:34,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1972959125] [2024-11-22 18:39:34,822 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1972959125] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:34,822 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1389341411] [2024-11-22 18:39:34,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:34,822 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:34,822 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:34,823 INFO L229 MonitoredProcess]: Starting monitored process 21 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:34,825 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Waiting until timeout for monitored process [2024-11-22 18:39:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:34,989 INFO L255 TraceCheckSpWp]: Trace formula consists of 343 conjuncts, 44 conjuncts are in the unsatisfiable core [2024-11-22 18:39:34,991 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:35,271 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 [2024-11-22 18:39:35,338 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 22 [2024-11-22 18:39:35,498 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:35,498 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 32 treesize of output 12 [2024-11-22 18:39:35,501 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:35,502 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:35,620 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 90 treesize of output 86 [2024-11-22 18:39:35,947 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:39:35,948 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1389341411] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:39:35,948 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:39:35,948 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 12, 12] total 36 [2024-11-22 18:39:35,948 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [420786013] [2024-11-22 18:39:35,948 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:35,948 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 37 states [2024-11-22 18:39:35,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:35,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 37 interpolants. [2024-11-22 18:39:35,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1205, Unknown=0, NotChecked=0, Total=1332 [2024-11-22 18:39:35,949 INFO L87 Difference]: Start difference. First operand 7685 states and 10429 transitions. Second operand has 37 states, 36 states have (on average 4.305555555555555) internal successors, (155), 35 states have internal predecessors, (155), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:39:37,661 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:37,661 INFO L93 Difference]: Finished difference Result 8739 states and 11623 transitions. [2024-11-22 18:39:37,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 46 states. [2024-11-22 18:39:37,661 INFO L78 Accepts]: Start accepts. Automaton has has 37 states, 36 states have (on average 4.305555555555555) internal successors, (155), 35 states have internal predecessors, (155), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 58 [2024-11-22 18:39:37,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:37,670 INFO L225 Difference]: With dead ends: 8739 [2024-11-22 18:39:37,671 INFO L226 Difference]: Without dead ends: 8739 [2024-11-22 18:39:37,671 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 165 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1258 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=644, Invalid=4326, Unknown=0, NotChecked=0, Total=4970 [2024-11-22 18:39:37,671 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 785 mSDsluCounter, 2200 mSDsCounter, 0 mSdLazyCounter, 1218 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 787 SdHoareTripleChecker+Valid, 2314 SdHoareTripleChecker+Invalid, 1256 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 1218 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:37,672 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [787 Valid, 2314 Invalid, 1256 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 1218 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-22 18:39:37,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 8739 states. [2024-11-22 18:39:37,732 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 8739 to 7861. [2024-11-22 18:39:37,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 7861 states, 7477 states have (on average 1.3375685435335027) internal successors, (10001), 7541 states have internal predecessors, (10001), 303 states have call successors, (303), 52 states have call predecessors, (303), 52 states have return successors, (303), 267 states have call predecessors, (303), 303 states have call successors, (303) [2024-11-22 18:39:37,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7861 states to 7861 states and 10607 transitions. [2024-11-22 18:39:37,748 INFO L78 Accepts]: Start accepts. Automaton has 7861 states and 10607 transitions. Word has length 58 [2024-11-22 18:39:37,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:37,748 INFO L471 AbstractCegarLoop]: Abstraction has 7861 states and 10607 transitions. [2024-11-22 18:39:37,749 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 37 states, 36 states have (on average 4.305555555555555) internal successors, (155), 35 states have internal predecessors, (155), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:39:37,749 INFO L276 IsEmpty]: Start isEmpty. Operand 7861 states and 10607 transitions. [2024-11-22 18:39:37,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-22 18:39:37,749 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:37,749 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:37,757 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (21)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:37,953 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable52 [2024-11-22 18:39:37,954 INFO L396 AbstractCegarLoop]: === Iteration 54 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:37,954 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:37,954 INFO L85 PathProgramCache]: Analyzing trace with hash -2067277252, now seen corresponding path program 1 times [2024-11-22 18:39:37,954 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:37,955 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [788512175] [2024-11-22 18:39:37,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:37,955 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:37,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:38,488 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:38,488 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [788512175] [2024-11-22 18:39:38,489 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [788512175] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:38,489 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1843791806] [2024-11-22 18:39:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:38,489 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:38,489 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:38,490 INFO L229 MonitoredProcess]: Starting monitored process 22 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:38,492 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Waiting until timeout for monitored process [2024-11-22 18:39:38,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:38,656 INFO L255 TraceCheckSpWp]: Trace formula consists of 345 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-22 18:39:38,658 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:38,750 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 [2024-11-22 18:39:38,939 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 [2024-11-22 18:39:39,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 27 treesize of output 22 [2024-11-22 18:39:39,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:39,188 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 32 treesize of output 12 [2024-11-22 18:39:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:39,192 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:39,303 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 98 treesize of output 94 [2024-11-22 18:39:39,887 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:39:39,888 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1843791806] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:39:39,888 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:39:39,888 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13, 12] total 37 [2024-11-22 18:39:39,888 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [942557509] [2024-11-22 18:39:39,888 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:39,888 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-22 18:39:39,888 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:39,889 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-22 18:39:39,889 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=1277, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 18:39:39,889 INFO L87 Difference]: Start difference. First operand 7861 states and 10607 transitions. Second operand has 38 states, 37 states have (on average 4.216216216216216) internal successors, (156), 36 states have internal predecessors, (156), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:39:41,596 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:41,597 INFO L93 Difference]: Finished difference Result 9386 states and 12466 transitions. [2024-11-22 18:39:41,597 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 43 states. [2024-11-22 18:39:41,597 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 37 states have (on average 4.216216216216216) internal successors, (156), 36 states have internal predecessors, (156), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 59 [2024-11-22 18:39:41,597 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:41,606 INFO L225 Difference]: With dead ends: 9386 [2024-11-22 18:39:41,606 INFO L226 Difference]: Without dead ends: 9386 [2024-11-22 18:39:41,607 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 164 GetRequests, 97 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1179 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=529, Invalid=4163, Unknown=0, NotChecked=0, Total=4692 [2024-11-22 18:39:41,607 INFO L432 NwaCegarLoop]: 142 mSDtfsCounter, 668 mSDsluCounter, 2238 mSDsCounter, 0 mSdLazyCounter, 1681 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 670 SdHoareTripleChecker+Valid, 2380 SdHoareTripleChecker+Invalid, 1721 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1681 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:41,607 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [670 Valid, 2380 Invalid, 1721 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1681 Invalid, 0 Unknown, 0 Unchecked, 0.9s Time] [2024-11-22 18:39:41,610 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9386 states. [2024-11-22 18:39:41,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9386 to 8548. [2024-11-22 18:39:41,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8548 states, 8135 states have (on average 1.328457283343577) internal successors, (10807), 8207 states have internal predecessors, (10807), 325 states have call successors, (325), 59 states have call predecessors, (325), 59 states have return successors, (325), 281 states have call predecessors, (325), 325 states have call successors, (325) [2024-11-22 18:39:41,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8548 states to 8548 states and 11457 transitions. [2024-11-22 18:39:41,675 INFO L78 Accepts]: Start accepts. Automaton has 8548 states and 11457 transitions. Word has length 59 [2024-11-22 18:39:41,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:41,675 INFO L471 AbstractCegarLoop]: Abstraction has 8548 states and 11457 transitions. [2024-11-22 18:39:41,675 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 37 states have (on average 4.216216216216216) internal successors, (156), 36 states have internal predecessors, (156), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:39:41,675 INFO L276 IsEmpty]: Start isEmpty. Operand 8548 states and 11457 transitions. [2024-11-22 18:39:41,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 18:39:41,676 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:41,676 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:41,683 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (22)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:41,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable53,22 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:41,881 INFO L396 AbstractCegarLoop]: === Iteration 55 === Targeting ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:41,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:41,881 INFO L85 PathProgramCache]: Analyzing trace with hash 1019302585, now seen corresponding path program 1 times [2024-11-22 18:39:41,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:41,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1902675636] [2024-11-22 18:39:41,881 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:41,881 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:41,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:43,383 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:39:43,383 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1902675636] [2024-11-22 18:39:43,383 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1902675636] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:43,383 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [138102548] [2024-11-22 18:39:43,383 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:43,383 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:43,383 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:43,384 INFO L229 MonitoredProcess]: Starting monitored process 23 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:43,386 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Waiting until timeout for monitored process [2024-11-22 18:39:43,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:43,591 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 59 conjuncts are in the unsatisfiable core [2024-11-22 18:39:43,593 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:43,763 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 [2024-11-22 18:39:43,767 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 [2024-11-22 18:39:43,837 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 17 treesize of output 17 [2024-11-22 18:39:43,841 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 17 treesize of output 17 [2024-11-22 18:39:44,101 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 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 10 [2024-11-22 18:39:44,104 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:44,104 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 30 treesize of output 10 [2024-11-22 18:39:44,131 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:44,131 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:39:44,131 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [138102548] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:44,131 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:39:44,131 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [22] total 33 [2024-11-22 18:39:44,132 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1636131720] [2024-11-22 18:39:44,132 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:44,132 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2024-11-22 18:39:44,132 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:44,132 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2024-11-22 18:39:44,133 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=961, Unknown=0, NotChecked=0, Total=1056 [2024-11-22 18:39:44,133 INFO L87 Difference]: Start difference. First operand 8548 states and 11457 transitions. Second operand has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:44,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:44,458 INFO L93 Difference]: Finished difference Result 9177 states and 12118 transitions. [2024-11-22 18:39:44,458 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-11-22 18:39:44,459 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 60 [2024-11-22 18:39:44,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:44,468 INFO L225 Difference]: With dead ends: 9177 [2024-11-22 18:39:44,468 INFO L226 Difference]: Without dead ends: 9177 [2024-11-22 18:39:44,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 51 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 335 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=126, Invalid=1280, Unknown=0, NotChecked=0, Total=1406 [2024-11-22 18:39:44,469 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 206 mSDsluCounter, 1091 mSDsCounter, 0 mSdLazyCounter, 332 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 1222 SdHoareTripleChecker+Invalid, 333 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 332 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:44,469 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 1222 Invalid, 333 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 332 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:39:44,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9177 states. [2024-11-22 18:39:44,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9177 to 8482. [2024-11-22 18:39:44,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8482 states, 8069 states have (on average 1.3230883628702441) internal successors, (10676), 8141 states have internal predecessors, (10676), 325 states have call successors, (325), 59 states have call predecessors, (325), 59 states have return successors, (325), 281 states have call predecessors, (325), 325 states have call successors, (325) [2024-11-22 18:39:44,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8482 states to 8482 states and 11326 transitions. [2024-11-22 18:39:44,586 INFO L78 Accepts]: Start accepts. Automaton has 8482 states and 11326 transitions. Word has length 60 [2024-11-22 18:39:44,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:44,586 INFO L471 AbstractCegarLoop]: Abstraction has 8482 states and 11326 transitions. [2024-11-22 18:39:44,586 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 4.3076923076923075) internal successors, (56), 10 states have internal predecessors, (56), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:44,587 INFO L276 IsEmpty]: Start isEmpty. Operand 8482 states and 11326 transitions. [2024-11-22 18:39:44,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-22 18:39:44,588 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:44,588 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:44,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (23)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:44,788 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable54,23 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:44,789 INFO L396 AbstractCegarLoop]: === Iteration 56 === Targeting ULTIMATE.startErr36ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:44,790 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:44,790 INFO L85 PathProgramCache]: Analyzing trace with hash 338914841, now seen corresponding path program 1 times [2024-11-22 18:39:44,790 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:44,790 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1279969028] [2024-11-22 18:39:44,790 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:44,790 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:44,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:45,342 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:45,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:45,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1279969028] [2024-11-22 18:39:45,342 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1279969028] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:45,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1439378675] [2024-11-22 18:39:45,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:45,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:45,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:45,344 INFO L229 MonitoredProcess]: Starting monitored process 24 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:45,345 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Waiting until timeout for monitored process [2024-11-22 18:39:45,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:45,521 INFO L255 TraceCheckSpWp]: Trace formula consists of 356 conjuncts, 58 conjuncts are in the unsatisfiable core [2024-11-22 18:39:45,523 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:45,653 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-22 18:39:45,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 11 [2024-11-22 18:39:45,833 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-22 18:39:45,906 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 26 treesize of output 21 [2024-11-22 18:39:46,138 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:46,138 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 29 treesize of output 11 [2024-11-22 18:39:46,180 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 [2024-11-22 18:39:46,204 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:46,204 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:46,385 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 99 treesize of output 95 [2024-11-22 18:39:46,392 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:46,392 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 94 treesize of output 98 [2024-11-22 18:39:46,814 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 3 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-22 18:39:46,814 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1439378675] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:39:46,814 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:39:46,814 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 14, 14] total 40 [2024-11-22 18:39:46,814 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778644589] [2024-11-22 18:39:46,814 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:46,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 41 states [2024-11-22 18:39:46,815 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:46,815 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 41 interpolants. [2024-11-22 18:39:46,816 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=130, Invalid=1510, Unknown=0, NotChecked=0, Total=1640 [2024-11-22 18:39:46,816 INFO L87 Difference]: Start difference. First operand 8482 states and 11326 transitions. Second operand has 41 states, 40 states have (on average 4.025) internal successors, (161), 39 states have internal predecessors, (161), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:39:48,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:48,828 INFO L93 Difference]: Finished difference Result 14052 states and 18330 transitions. [2024-11-22 18:39:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 41 states. [2024-11-22 18:39:48,829 INFO L78 Accepts]: Start accepts. Automaton has has 41 states, 40 states have (on average 4.025) internal successors, (161), 39 states have internal predecessors, (161), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 60 [2024-11-22 18:39:48,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:48,845 INFO L225 Difference]: With dead ends: 14052 [2024-11-22 18:39:48,845 INFO L226 Difference]: Without dead ends: 14052 [2024-11-22 18:39:48,846 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 168 GetRequests, 95 SyntacticMatches, 1 SemanticMatches, 72 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1242 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=662, Invalid=4740, Unknown=0, NotChecked=0, Total=5402 [2024-11-22 18:39:48,846 INFO L432 NwaCegarLoop]: 102 mSDtfsCounter, 1029 mSDsluCounter, 2517 mSDsCounter, 0 mSdLazyCounter, 1927 mSolverCounterSat, 90 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1030 SdHoareTripleChecker+Valid, 2619 SdHoareTripleChecker+Invalid, 2017 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 90 IncrementalHoareTripleChecker+Valid, 1927 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:48,846 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1030 Valid, 2619 Invalid, 2017 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [90 Valid, 1927 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-22 18:39:48,853 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14052 states. [2024-11-22 18:39:48,946 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14052 to 13049. [2024-11-22 18:39:48,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13049 states, 12433 states have (on average 1.2998471808895682) internal successors, (16161), 12509 states have internal predecessors, (16161), 500 states have call successors, (500), 87 states have call predecessors, (500), 87 states have return successors, (500), 452 states have call predecessors, (500), 500 states have call successors, (500) [2024-11-22 18:39:48,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13049 states to 13049 states and 17161 transitions. [2024-11-22 18:39:48,970 INFO L78 Accepts]: Start accepts. Automaton has 13049 states and 17161 transitions. Word has length 60 [2024-11-22 18:39:48,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:48,970 INFO L471 AbstractCegarLoop]: Abstraction has 13049 states and 17161 transitions. [2024-11-22 18:39:48,970 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 41 states, 40 states have (on average 4.025) internal successors, (161), 39 states have internal predecessors, (161), 6 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-11-22 18:39:48,970 INFO L276 IsEmpty]: Start isEmpty. Operand 13049 states and 17161 transitions. [2024-11-22 18:39:48,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2024-11-22 18:39:48,971 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:48,971 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:48,978 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (24)] Ended with exit code 0 [2024-11-22 18:39:49,171 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable55,24 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:49,172 INFO L396 AbstractCegarLoop]: === Iteration 57 === Targeting ULTIMATE.startErr37ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:49,172 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:49,172 INFO L85 PathProgramCache]: Analyzing trace with hash 1916425694, now seen corresponding path program 1 times [2024-11-22 18:39:49,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:49,172 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1575533103] [2024-11-22 18:39:49,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:49,172 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:49,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:49,318 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:49,318 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1575533103] [2024-11-22 18:39:49,318 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1575533103] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:49,318 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [850234397] [2024-11-22 18:39:49,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:49,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:49,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:49,320 INFO L229 MonitoredProcess]: Starting monitored process 25 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:49,321 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Waiting until timeout for monitored process [2024-11-22 18:39:49,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:49,499 INFO L255 TraceCheckSpWp]: Trace formula consists of 358 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-22 18:39:49,501 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:49,780 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-22 18:39:49,780 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-22 18:39:49,780 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [850234397] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:49,780 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-22 18:39:49,780 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [8] total 15 [2024-11-22 18:39:49,780 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1563464228] [2024-11-22 18:39:49,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:49,781 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-22 18:39:49,781 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:49,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-22 18:39:49,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=203, Unknown=0, NotChecked=0, Total=240 [2024-11-22 18:39:49,781 INFO L87 Difference]: Start difference. First operand 13049 states and 17161 transitions. Second operand has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:50,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:50,000 INFO L93 Difference]: Finished difference Result 13133 states and 17142 transitions. [2024-11-22 18:39:50,000 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-22 18:39:50,001 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 61 [2024-11-22 18:39:50,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:50,016 INFO L225 Difference]: With dead ends: 13133 [2024-11-22 18:39:50,017 INFO L226 Difference]: Without dead ends: 13133 [2024-11-22 18:39:50,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 54 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=353, Unknown=0, NotChecked=0, Total=420 [2024-11-22 18:39:50,017 INFO L432 NwaCegarLoop]: 87 mSDtfsCounter, 142 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 248 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 142 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 250 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 248 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:50,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [142 Valid, 439 Invalid, 250 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 248 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-22 18:39:50,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13133 states. [2024-11-22 18:39:50,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13133 to 13048. [2024-11-22 18:39:50,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13048 states, 12433 states have (on average 1.2914823453711897) internal successors, (16057), 12508 states have internal predecessors, (16057), 500 states have call successors, (500), 87 states have call predecessors, (500), 87 states have return successors, (500), 452 states have call predecessors, (500), 500 states have call successors, (500) [2024-11-22 18:39:50,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13048 states to 13048 states and 17057 transitions. [2024-11-22 18:39:50,136 INFO L78 Accepts]: Start accepts. Automaton has 13048 states and 17057 transitions. Word has length 61 [2024-11-22 18:39:50,136 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:50,136 INFO L471 AbstractCegarLoop]: Abstraction has 13048 states and 17057 transitions. [2024-11-22 18:39:50,136 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 7.125) internal successors, (57), 8 states have internal predecessors, (57), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:50,137 INFO L276 IsEmpty]: Start isEmpty. Operand 13048 states and 17057 transitions. [2024-11-22 18:39:50,138 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2024-11-22 18:39:50,139 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:50,139 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:50,146 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (25)] Forceful destruction successful, exit code 0 [2024-11-22 18:39:50,339 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable56,25 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:50,339 INFO L396 AbstractCegarLoop]: === Iteration 58 === Targeting ULTIMATE.startErr56ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:50,340 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:50,340 INFO L85 PathProgramCache]: Analyzing trace with hash 1407510296, now seen corresponding path program 1 times [2024-11-22 18:39:50,340 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:50,340 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [740285940] [2024-11-22 18:39:50,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:50,340 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:50,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:50,628 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2024-11-22 18:39:50,629 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:50,629 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [740285940] [2024-11-22 18:39:50,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [740285940] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-22 18:39:50,629 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-22 18:39:50,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-22 18:39:50,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894644357] [2024-11-22 18:39:50,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-22 18:39:50,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-22 18:39:50,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:50,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-22 18:39:50,630 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-22 18:39:50,630 INFO L87 Difference]: Start difference. First operand 13048 states and 17057 transitions. Second operand has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:50,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-22 18:39:50,900 INFO L93 Difference]: Finished difference Result 9751 states and 12565 transitions. [2024-11-22 18:39:50,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-22 18:39:50,901 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 68 [2024-11-22 18:39:50,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-22 18:39:50,910 INFO L225 Difference]: With dead ends: 9751 [2024-11-22 18:39:50,911 INFO L226 Difference]: Without dead ends: 9751 [2024-11-22 18:39:50,911 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 49 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2024-11-22 18:39:50,911 INFO L432 NwaCegarLoop]: 159 mSDtfsCounter, 124 mSDsluCounter, 1016 mSDsCounter, 0 mSdLazyCounter, 317 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 1175 SdHoareTripleChecker+Invalid, 318 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 317 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-22 18:39:50,911 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 1175 Invalid, 318 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 317 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-22 18:39:50,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9751 states. [2024-11-22 18:39:50,972 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9751 to 9452. [2024-11-22 18:39:50,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 9452 states, 8981 states have (on average 1.2804810154771185) internal successors, (11500), 9060 states have internal predecessors, (11500), 356 states have call successors, (356), 87 states have call predecessors, (356), 87 states have return successors, (356), 304 states have call predecessors, (356), 356 states have call successors, (356) [2024-11-22 18:39:50,989 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9452 states to 9452 states and 12212 transitions. [2024-11-22 18:39:50,989 INFO L78 Accepts]: Start accepts. Automaton has 9452 states and 12212 transitions. Word has length 68 [2024-11-22 18:39:50,989 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-22 18:39:50,989 INFO L471 AbstractCegarLoop]: Abstraction has 9452 states and 12212 transitions. [2024-11-22 18:39:50,990 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 5.636363636363637) internal successors, (62), 11 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-11-22 18:39:50,990 INFO L276 IsEmpty]: Start isEmpty. Operand 9452 states and 12212 transitions. [2024-11-22 18:39:50,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-22 18:39:50,991 INFO L207 NwaCegarLoop]: Found error trace [2024-11-22 18:39:50,991 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 1, 1, 1, 1, 1, 1] [2024-11-22 18:39:50,991 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable57 [2024-11-22 18:39:50,991 INFO L396 AbstractCegarLoop]: === Iteration 59 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 54 more)] === [2024-11-22 18:39:50,991 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-22 18:39:50,991 INFO L85 PathProgramCache]: Analyzing trace with hash -455527290, now seen corresponding path program 1 times [2024-11-22 18:39:50,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-22 18:39:50,992 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [516504873] [2024-11-22 18:39:50,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:50,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-22 18:39:51,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:51,553 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 25 proven. 2 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 18:39:51,554 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-22 18:39:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [516504873] [2024-11-22 18:39:51,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [516504873] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-22 18:39:51,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1543557781] [2024-11-22 18:39:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-22 18:39:51,554 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-22 18:39:51,554 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-22 18:39:51,555 INFO L229 MonitoredProcess]: Starting monitored process 26 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-22 18:39:51,557 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (26)] Waiting until timeout for monitored process [2024-11-22 18:39:51,735 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-22 18:39:51,736 INFO L255 TraceCheckSpWp]: Trace formula consists of 353 conjuncts, 53 conjuncts are in the unsatisfiable core [2024-11-22 18:39:51,742 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-22 18:39:52,190 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 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 [2024-11-22 18:39:52,266 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 24 treesize of output 19 [2024-11-22 18:39:52,524 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:39:52,539 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-22 18:39:52,539 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 3 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 46 [2024-11-22 18:39:52,742 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 10 proven. 18 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-22 18:39:52,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-22 18:39:53,099 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 38 treesize of output 34 [2024-11-22 18:39:53,105 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-22 18:39:53,105 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-22 18:39:53,107 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 22 treesize of output 18 [2024-11-22 18:39:53,603 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2024-11-22 18:39:53,604 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1543557781] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-22 18:39:53,604 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-22 18:39:53,604 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19, 19, 21] total 55 [2024-11-22 18:39:53,604 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380247073] [2024-11-22 18:39:53,604 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-22 18:39:53,604 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 55 states [2024-11-22 18:39:53,604 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-22 18:39:53,605 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 55 interpolants. [2024-11-22 18:39:53,605 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=239, Invalid=2731, Unknown=0, NotChecked=0, Total=2970 [2024-11-22 18:39:53,605 INFO L87 Difference]: Start difference. First operand 9452 states and 12212 transitions. Second operand has 55 states, 55 states have (on average 3.018181818181818) internal successors, (166), 52 states have internal predecessors, (166), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6)