./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/verifythis/duplets.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 3061b6dc Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/verifythis/duplets.c -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 ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.dk.eval-assert-order-craig-3061b6d-m [2024-11-19 06:37:38,961 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-19 06:37:39,052 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-19 06:37:39,058 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-19 06:37:39,059 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-19 06:37:39,084 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-19 06:37:39,084 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-19 06:37:39,085 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-19 06:37:39,085 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-19 06:37:39,089 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-19 06:37:39,090 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-19 06:37:39,090 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-19 06:37:39,091 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-19 06:37:39,091 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-19 06:37:39,091 INFO L153 SettingsManager]: * Use SBE=true [2024-11-19 06:37:39,091 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-19 06:37:39,092 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-19 06:37:39,092 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-19 06:37:39,092 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-19 06:37:39,092 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-19 06:37:39,092 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-19 06:37:39,095 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-19 06:37:39,095 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-19 06:37:39,095 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-19 06:37:39,095 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-19 06:37:39,096 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-19 06:37:39,096 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-19 06:37:39,096 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-19 06:37:39,097 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-19 06:37:39,097 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-19 06:37:39,098 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-19 06:37:39,098 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-19 06:37:39,098 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-19 06:37:39,099 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:37:39,099 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-19 06:37:39,100 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-19 06:37:39,100 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-19 06:37:39,100 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-19 06:37:39,100 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-19 06:37:39,100 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-19 06:37:39,101 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-19 06:37:39,101 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-19 06:37:39,101 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 [2024-11-19 06:37:39,358 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-19 06:37:39,387 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-19 06:37:39,389 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-19 06:37:39,391 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-19 06:37:39,391 INFO L274 PluginConnector]: CDTParser initialized [2024-11-19 06:37:39,393 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/verifythis/duplets.c [2024-11-19 06:37:40,879 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-19 06:37:41,078 INFO L384 CDTParser]: Found 1 translation units. [2024-11-19 06:37:41,078 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c [2024-11-19 06:37:41,088 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/207f2d6d3/c3b5c8e569234588a9edf188cbba5c6c/FLAGaac8a21ad [2024-11-19 06:37:41,102 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/207f2d6d3/c3b5c8e569234588a9edf188cbba5c6c [2024-11-19 06:37:41,104 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-19 06:37:41,105 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-19 06:37:41,107 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-19 06:37:41,107 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-19 06:37:41,114 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-19 06:37:41,114 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,115 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@15727ed1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41, skipping insertion in model container [2024-11-19 06:37:41,115 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,137 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-19 06:37:41,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:37:41,326 INFO L200 MainTranslator]: Completed pre-run [2024-11-19 06:37:41,354 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-19 06:37:41,376 INFO L204 MainTranslator]: Completed translation [2024-11-19 06:37:41,377 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41 WrapperNode [2024-11-19 06:37:41,377 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-19 06:37:41,378 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-19 06:37:41,378 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-19 06:37:41,378 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-19 06:37:41,386 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,392 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,416 INFO L138 Inliner]: procedures = 21, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-11-19 06:37:41,416 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-19 06:37:41,417 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-19 06:37:41,417 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-19 06:37:41,417 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-19 06:37:41,428 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,429 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,432 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,447 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 7, 5, 5]. 37 percent of accesses are in the largest equivalence class. The 2 initializations are split as follows [2, 0, 0, 0]. The 5 writes are split as follows [0, 3, 1, 1]. [2024-11-19 06:37:41,447 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,447 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,455 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,458 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,460 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,461 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,464 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-19 06:37:41,465 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-19 06:37:41,465 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-19 06:37:41,465 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-19 06:37:41,466 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (1/1) ... [2024-11-19 06:37:41,476 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-19 06:37:41,490 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:41,503 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-19 06:37:41,505 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-19 06:37:41,541 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-19 06:37:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-19 06:37:41,542 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-19 06:37:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-19 06:37:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-19 06:37:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-19 06:37:41,542 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-19 06:37:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-19 06:37:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-19 06:37:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-19 06:37:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-19 06:37:41,543 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-19 06:37:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-19 06:37:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-19 06:37:41,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-19 06:37:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-19 06:37:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-19 06:37:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-19 06:37:41,544 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-19 06:37:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-19 06:37:41,545 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-19 06:37:41,545 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-19 06:37:41,633 INFO L238 CfgBuilder]: Building ICFG [2024-11-19 06:37:41,635 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-19 06:37:41,945 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-19 06:37:41,948 INFO L287 CfgBuilder]: Performing block encoding [2024-11-19 06:37:41,965 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-19 06:37:41,965 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-19 06:37:41,969 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:41 BoogieIcfgContainer [2024-11-19 06:37:41,969 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-19 06:37:41,971 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-19 06:37:41,972 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-19 06:37:41,975 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-19 06:37:41,975 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 06:37:41" (1/3) ... [2024-11-19 06:37:41,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e76478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:41, skipping insertion in model container [2024-11-19 06:37:41,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 06:37:41" (2/3) ... [2024-11-19 06:37:41,976 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68e76478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 06:37:41, skipping insertion in model container [2024-11-19 06:37:41,976 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 06:37:41" (3/3) ... [2024-11-19 06:37:41,977 INFO L112 eAbstractionObserver]: Analyzing ICFG duplets.c [2024-11-19 06:37:41,994 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-19 06:37:41,994 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-11-19 06:37:42,048 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-19 06:37:42,055 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;@45223022, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-19 06:37:42,055 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-19 06:37:42,058 INFO L276 IsEmpty]: Start isEmpty. Operand has 102 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 90 states have internal predecessors, (99), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:42,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:37:42,064 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:42,064 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:42,065 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:42,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:42,069 INFO L85 PathProgramCache]: Analyzing trace with hash 1682769483, now seen corresponding path program 1 times [2024-11-19 06:37:42,077 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:42,077 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [714044605] [2024-11-19 06:37:42,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:42,078 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 06:37:42,260 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:42,261 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [714044605] [2024-11-19 06:37:42,261 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [714044605] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:42,262 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908536200] [2024-11-19 06:37:42,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:42,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:42,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:42,264 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:42,266 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-19 06:37:42,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:42,352 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 1 conjuncts are in the unsatisfiable core [2024-11-19 06:37:42,356 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:42,370 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2024-11-19 06:37:42,371 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:37:42,371 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908536200] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:42,371 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:37:42,371 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [2] total 2 [2024-11-19 06:37:42,373 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788388606] [2024-11-19 06:37:42,374 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:42,382 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-19 06:37:42,382 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:42,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-19 06:37:42,412 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:37:42,414 INFO L87 Difference]: Start difference. First operand has 102 states, 53 states have (on average 1.8679245283018868) internal successors, (99), 90 states have internal predecessors, (99), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) Second operand has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:42,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:42,430 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2024-11-19 06:37:42,431 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-19 06:37:42,432 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-19 06:37:42,432 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:42,437 INFO L225 Difference]: With dead ends: 101 [2024-11-19 06:37:42,437 INFO L226 Difference]: Without dead ends: 99 [2024-11-19 06:37:42,439 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-19 06:37:42,442 INFO L432 NwaCegarLoop]: 112 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, 112 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:42,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:42,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-19 06:37:42,475 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-19 06:37:42,476 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 51 states have (on average 1.803921568627451) internal successors, (92), 87 states have internal predecessors, (92), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:42,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2024-11-19 06:37:42,479 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 26 [2024-11-19 06:37:42,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:42,479 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2024-11-19 06:37:42,480 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 5.5) internal successors, (11), 2 states have internal predecessors, (11), 2 states have call successors, (4), 2 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:42,480 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2024-11-19 06:37:42,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:37:42,481 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:42,482 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:42,498 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-19 06:37:42,682 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,SelfDestructingSolverStorable0 [2024-11-19 06:37:42,683 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:42,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:42,684 INFO L85 PathProgramCache]: Analyzing trace with hash 230580555, now seen corresponding path program 1 times [2024-11-19 06:37:42,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:42,684 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1546963293] [2024-11-19 06:37:42,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:42,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:42,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:42,944 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:42,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:42,945 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1546963293] [2024-11-19 06:37:42,945 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1546963293] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:42,945 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:42,945 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:37:42,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120456954] [2024-11-19 06:37:42,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:42,946 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:37:42,946 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:42,947 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:37:42,950 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:42,950 INFO L87 Difference]: Start difference. First operand 99 states and 110 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:43,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:43,083 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-11-19 06:37:43,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:37:43,083 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2024-11-19 06:37:43,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:43,086 INFO L225 Difference]: With dead ends: 97 [2024-11-19 06:37:43,088 INFO L226 Difference]: Without dead ends: 97 [2024-11-19 06:37:43,088 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:37:43,090 INFO L432 NwaCegarLoop]: 103 mSDtfsCounter, 1 mSDsluCounter, 123 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 226 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:43,090 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [1 Valid, 226 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:43,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-19 06:37:43,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-19 06:37:43,103 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 51 states have (on average 1.7647058823529411) internal successors, (90), 85 states have internal predecessors, (90), 9 states have call successors, (9), 2 states have call predecessors, (9), 2 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:43,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2024-11-19 06:37:43,105 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 26 [2024-11-19 06:37:43,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:43,106 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2024-11-19 06:37:43,107 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:43,107 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2024-11-19 06:37:43,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-19 06:37:43,109 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:43,109 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:43,109 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-19 06:37:43,110 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:43,111 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:43,112 INFO L85 PathProgramCache]: Analyzing trace with hash 230580556, now seen corresponding path program 1 times [2024-11-19 06:37:43,112 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:43,113 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1345786800] [2024-11-19 06:37:43,113 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:43,113 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:43,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:43,638 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 06:37:43,638 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:43,639 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1345786800] [2024-11-19 06:37:43,640 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1345786800] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:43,640 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [192655848] [2024-11-19 06:37:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:43,641 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:43,641 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:43,644 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:43,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-19 06:37:43,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:43,727 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-19 06:37:43,732 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:43,823 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-19 06:37:44,266 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-19 06:37:44,267 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:44,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 06:37:44,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [192655848] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:44,663 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:44,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 7] total 19 [2024-11-19 06:37:44,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [513906313] [2024-11-19 06:37:44,664 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:44,664 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-19 06:37:44,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:44,665 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-19 06:37:44,666 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2024-11-19 06:37:44,666 INFO L87 Difference]: Start difference. First operand 97 states and 108 transitions. Second operand has 20 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 7 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-19 06:37:48,775 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.01s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-19 06:37:49,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:49,462 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2024-11-19 06:37:49,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:37:49,463 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 7 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) Word has length 26 [2024-11-19 06:37:49,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:49,464 INFO L225 Difference]: With dead ends: 132 [2024-11-19 06:37:49,465 INFO L226 Difference]: Without dead ends: 132 [2024-11-19 06:37:49,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 37 SyntacticMatches, 4 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 170 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=573, Unknown=0, NotChecked=0, Total=702 [2024-11-19 06:37:49,466 INFO L432 NwaCegarLoop]: 82 mSDtfsCounter, 246 mSDsluCounter, 751 mSDsCounter, 0 mSdLazyCounter, 762 mSolverCounterSat, 24 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 247 SdHoareTripleChecker+Valid, 833 SdHoareTripleChecker+Invalid, 787 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 762 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:49,467 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [247 Valid, 833 Invalid, 787 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 762 Invalid, 1 Unknown, 0 Unchecked, 4.6s Time] [2024-11-19 06:37:49,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-19 06:37:49,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2024-11-19 06:37:49,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 54 states have (on average 1.7037037037037037) internal successors, (92), 87 states have internal predecessors, (92), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:49,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-11-19 06:37:49,482 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 26 [2024-11-19 06:37:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:49,483 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-11-19 06:37:49,483 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 16 states have (on average 1.75) internal successors, (28), 17 states have internal predecessors, (28), 7 states have call successors, (10), 3 states have call predecessors, (10), 4 states have return successors, (11), 5 states have call predecessors, (11), 7 states have call successors, (11) [2024-11-19 06:37:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-11-19 06:37:49,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-19 06:37:49,484 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:49,484 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:49,501 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-19 06:37:49,688 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable2 [2024-11-19 06:37:49,689 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:49,689 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:49,690 INFO L85 PathProgramCache]: Analyzing trace with hash -1441937394, now seen corresponding path program 1 times [2024-11-19 06:37:49,690 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:49,690 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2114427553] [2024-11-19 06:37:49,690 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:49,690 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:49,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:50,029 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-19 06:37:50,029 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:50,029 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2114427553] [2024-11-19 06:37:50,030 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2114427553] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:50,030 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1573082016] [2024-11-19 06:37:50,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:50,030 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:50,031 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:50,032 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:50,034 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-19 06:37:50,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:50,103 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-19 06:37:50,105 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:50,136 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 10 treesize of output 9 [2024-11-19 06:37:50,725 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-19 06:37:50,725 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:51,232 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-19 06:37:51,232 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1573082016] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:51,233 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:51,233 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 10] total 24 [2024-11-19 06:37:51,233 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164747218] [2024-11-19 06:37:51,233 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:51,234 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:37:51,234 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:51,234 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:37:51,235 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:37:51,235 INFO L87 Difference]: Start difference. First operand 100 states and 110 transitions. Second operand has 25 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 7 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-19 06:37:52,050 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:52,050 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2024-11-19 06:37:52,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:37:52,051 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 7 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) Word has length 27 [2024-11-19 06:37:52,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:52,053 INFO L225 Difference]: With dead ends: 131 [2024-11-19 06:37:52,053 INFO L226 Difference]: Without dead ends: 131 [2024-11-19 06:37:52,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 36 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 234 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2024-11-19 06:37:52,054 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 197 mSDsluCounter, 638 mSDsCounter, 0 mSdLazyCounter, 646 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 198 SdHoareTripleChecker+Valid, 699 SdHoareTripleChecker+Invalid, 665 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 646 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:52,055 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [198 Valid, 699 Invalid, 665 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 646 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-11-19 06:37:52,059 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-19 06:37:52,069 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 99. [2024-11-19 06:37:52,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 54 states have (on average 1.6851851851851851) internal successors, (91), 86 states have internal predecessors, (91), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:52,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2024-11-19 06:37:52,073 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 27 [2024-11-19 06:37:52,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:52,073 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2024-11-19 06:37:52,073 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 21 states have (on average 1.7619047619047619) internal successors, (37), 22 states have internal predecessors, (37), 7 states have call successors, (10), 3 states have call predecessors, (10), 6 states have return successors, (12), 9 states have call predecessors, (12), 7 states have call successors, (12) [2024-11-19 06:37:52,076 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2024-11-19 06:37:52,077 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:37:52,077 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:52,077 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:52,095 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2024-11-19 06:37:52,278 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:52,278 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:52,279 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:52,279 INFO L85 PathProgramCache]: Analyzing trace with hash -559990634, now seen corresponding path program 1 times [2024-11-19 06:37:52,279 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:52,279 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [709785869] [2024-11-19 06:37:52,279 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:52,279 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:52,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:52,521 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:52,522 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:52,522 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [709785869] [2024-11-19 06:37:52,522 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [709785869] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:52,522 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:52,525 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:37:52,525 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1430742737] [2024-11-19 06:37:52,526 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:52,526 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:37:52,526 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:52,527 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:37:52,527 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:37:52,527 INFO L87 Difference]: Start difference. First operand 99 states and 109 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:52,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:52,696 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2024-11-19 06:37:52,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:37:52,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-19 06:37:52,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:52,698 INFO L225 Difference]: With dead ends: 94 [2024-11-19 06:37:52,698 INFO L226 Difference]: Without dead ends: 94 [2024-11-19 06:37:52,699 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:37:52,699 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 78 mSDsluCounter, 134 mSDsCounter, 0 mSdLazyCounter, 204 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 204 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:52,700 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 200 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 204 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:37:52,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-19 06:37:52,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-19 06:37:52,712 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 54 states have (on average 1.5925925925925926) internal successors, (86), 81 states have internal predecessors, (86), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:52,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2024-11-19 06:37:52,716 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 31 [2024-11-19 06:37:52,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:52,717 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2024-11-19 06:37:52,718 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:52,718 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2024-11-19 06:37:52,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-19 06:37:52,718 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:52,719 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:52,719 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-19 06:37:52,719 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:52,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:52,720 INFO L85 PathProgramCache]: Analyzing trace with hash -559990633, now seen corresponding path program 1 times [2024-11-19 06:37:52,720 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:52,720 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [892077811] [2024-11-19 06:37:52,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:52,720 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:52,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:53,020 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:53,021 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:53,021 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [892077811] [2024-11-19 06:37:53,021 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [892077811] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:53,021 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:53,021 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-19 06:37:53,022 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34880292] [2024-11-19 06:37:53,022 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:53,022 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:37:53,022 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:53,023 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:37:53,023 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:37:53,023 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:53,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:53,229 INFO L93 Difference]: Finished difference Result 103 states and 117 transitions. [2024-11-19 06:37:53,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:37:53,230 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 31 [2024-11-19 06:37:53,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:53,231 INFO L225 Difference]: With dead ends: 103 [2024-11-19 06:37:53,231 INFO L226 Difference]: Without dead ends: 103 [2024-11-19 06:37:53,231 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 [2024-11-19 06:37:53,232 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 82 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 220 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 87 SdHoareTripleChecker+Valid, 205 SdHoareTripleChecker+Invalid, 222 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 220 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:53,232 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [87 Valid, 205 Invalid, 222 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 220 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:37:53,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-19 06:37:53,236 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 99. [2024-11-19 06:37:53,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 60 states have (on average 1.5833333333333333) internal successors, (95), 86 states have internal predecessors, (95), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:53,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 113 transitions. [2024-11-19 06:37:53,238 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 113 transitions. Word has length 31 [2024-11-19 06:37:53,238 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:53,238 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 113 transitions. [2024-11-19 06:37:53,239 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.8) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:53,239 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 113 transitions. [2024-11-19 06:37:53,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-19 06:37:53,239 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:53,240 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:53,240 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-19 06:37:53,240 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:53,240 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:53,241 INFO L85 PathProgramCache]: Analyzing trace with hash -179840453, now seen corresponding path program 1 times [2024-11-19 06:37:53,241 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:53,241 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [723447295] [2024-11-19 06:37:53,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:53,241 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:53,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:53,963 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:37:53,964 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:53,964 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [723447295] [2024-11-19 06:37:53,964 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [723447295] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:53,964 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:53,965 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 06:37:53,965 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1535210992] [2024-11-19 06:37:53,965 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:53,965 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:37:53,965 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:53,966 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:37:53,966 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:37:53,966 INFO L87 Difference]: Start difference. First operand 99 states and 113 transitions. Second operand has 12 states, 10 states have (on average 1.8) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:54,406 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:54,406 INFO L93 Difference]: Finished difference Result 135 states and 156 transitions. [2024-11-19 06:37:54,406 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-19 06:37:54,406 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 32 [2024-11-19 06:37:54,407 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:54,407 INFO L225 Difference]: With dead ends: 135 [2024-11-19 06:37:54,408 INFO L226 Difference]: Without dead ends: 135 [2024-11-19 06:37:54,408 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:37:54,408 INFO L432 NwaCegarLoop]: 54 mSDtfsCounter, 179 mSDsluCounter, 236 mSDsCounter, 0 mSdLazyCounter, 383 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 184 SdHoareTripleChecker+Valid, 290 SdHoareTripleChecker+Invalid, 390 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 383 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:54,409 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [184 Valid, 290 Invalid, 390 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 383 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-19 06:37:54,409 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-19 06:37:54,413 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 102. [2024-11-19 06:37:54,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.5714285714285714) internal successors, (99), 89 states have internal predecessors, (99), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:54,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2024-11-19 06:37:54,414 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 32 [2024-11-19 06:37:54,414 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:54,414 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2024-11-19 06:37:54,414 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 1.8) internal successors, (18), 12 states have internal predecessors, (18), 2 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:54,415 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2024-11-19 06:37:54,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 06:37:54,416 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:54,416 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:54,416 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-19 06:37:54,416 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:54,417 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:54,417 INFO L85 PathProgramCache]: Analyzing trace with hash 1549055201, now seen corresponding path program 1 times [2024-11-19 06:37:54,417 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:54,417 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [912317189] [2024-11-19 06:37:54,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:54,417 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:54,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:54,596 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:37:54,597 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:54,597 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [912317189] [2024-11-19 06:37:54,598 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [912317189] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:54,598 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1741159654] [2024-11-19 06:37:54,598 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:54,599 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:54,599 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:54,603 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:54,605 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-19 06:37:54,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:54,691 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-19 06:37:54,694 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:54,790 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:37:54,790 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:37:54,954 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:37:54,954 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1741159654] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:37:54,954 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:37:54,955 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2024-11-19 06:37:54,955 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018313316] [2024-11-19 06:37:54,955 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:37:54,955 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-19 06:37:54,955 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:54,956 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-19 06:37:54,956 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-19 06:37:54,956 INFO L87 Difference]: Start difference. First operand 102 states and 117 transitions. Second operand has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-19 06:37:55,161 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:55,161 INFO L93 Difference]: Finished difference Result 135 states and 150 transitions. [2024-11-19 06:37:55,162 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:37:55,162 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) Word has length 35 [2024-11-19 06:37:55,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:55,163 INFO L225 Difference]: With dead ends: 135 [2024-11-19 06:37:55,163 INFO L226 Difference]: Without dead ends: 135 [2024-11-19 06:37:55,163 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 81 GetRequests, 61 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-19 06:37:55,164 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 112 mSDsluCounter, 885 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 117 SdHoareTripleChecker+Valid, 968 SdHoareTripleChecker+Invalid, 234 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:55,164 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [117 Valid, 968 Invalid, 234 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:37:55,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 135 states. [2024-11-19 06:37:55,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 135 to 102. [2024-11-19 06:37:55,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 63 states have (on average 1.5555555555555556) internal successors, (98), 89 states have internal predecessors, (98), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:55,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 116 transitions. [2024-11-19 06:37:55,171 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 116 transitions. Word has length 35 [2024-11-19 06:37:55,175 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:55,175 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 116 transitions. [2024-11-19 06:37:55,175 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 14 states have (on average 2.5714285714285716) internal successors, (36), 17 states have internal predecessors, (36), 8 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 7 states have call predecessors, (10), 7 states have call successors, (10) [2024-11-19 06:37:55,176 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 116 transitions. [2024-11-19 06:37:55,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 06:37:55,176 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:55,176 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:55,193 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-19 06:37:55,377 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:55,377 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:55,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:55,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1029157449, now seen corresponding path program 1 times [2024-11-19 06:37:55,378 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:55,378 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2126015123] [2024-11-19 06:37:55,378 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:55,378 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:55,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:55,460 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:55,461 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:55,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2126015123] [2024-11-19 06:37:55,461 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2126015123] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:55,461 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [433384404] [2024-11-19 06:37:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:55,462 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:55,462 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:55,463 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:55,465 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-19 06:37:55,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:55,545 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 06:37:55,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:55,555 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:55,555 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:37:55,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [433384404] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:55,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:37:55,555 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2024-11-19 06:37:55,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1934228148] [2024-11-19 06:37:55,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:55,556 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:37:55,556 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:55,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:37:55,557 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:37:55,557 INFO L87 Difference]: Start difference. First operand 102 states and 116 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:55,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:55,591 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2024-11-19 06:37:55,591 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-19 06:37:55,592 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-11-19 06:37:55,592 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:55,592 INFO L225 Difference]: With dead ends: 114 [2024-11-19 06:37:55,592 INFO L226 Difference]: Without dead ends: 114 [2024-11-19 06:37:55,593 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:37:55,593 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 7 mSDsluCounter, 174 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:55,594 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 265 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:55,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-19 06:37:55,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 105. [2024-11-19 06:37:55,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 66 states have (on average 1.5454545454545454) internal successors, (102), 92 states have internal predecessors, (102), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:55,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 120 transitions. [2024-11-19 06:37:55,601 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 120 transitions. Word has length 34 [2024-11-19 06:37:55,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:55,601 INFO L471 AbstractCegarLoop]: Abstraction has 105 states and 120 transitions. [2024-11-19 06:37:55,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:55,601 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 120 transitions. [2024-11-19 06:37:55,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 06:37:55,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:55,602 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:55,622 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-19 06:37:55,803 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:55,804 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:55,804 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:55,805 INFO L85 PathProgramCache]: Analyzing trace with hash -1027983781, now seen corresponding path program 1 times [2024-11-19 06:37:55,805 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:55,805 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1728922054] [2024-11-19 06:37:55,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:55,805 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:55,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:55,893 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:55,893 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:55,893 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1728922054] [2024-11-19 06:37:55,893 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1728922054] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:55,894 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:55,894 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:37:55,894 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991991176] [2024-11-19 06:37:55,894 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:55,894 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:37:55,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:55,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:37:55,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:55,895 INFO L87 Difference]: Start difference. First operand 105 states and 120 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:55,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:55,935 INFO L93 Difference]: Finished difference Result 105 states and 120 transitions. [2024-11-19 06:37:55,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:37:55,936 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-11-19 06:37:55,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:55,936 INFO L225 Difference]: With dead ends: 105 [2024-11-19 06:37:55,936 INFO L226 Difference]: Without dead ends: 105 [2024-11-19 06:37:55,937 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:55,937 INFO L432 NwaCegarLoop]: 95 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 150 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:55,937 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 150 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:55,938 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2024-11-19 06:37:55,942 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 104. [2024-11-19 06:37:55,942 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 104 states, 66 states have (on average 1.5303030303030303) internal successors, (101), 91 states have internal predecessors, (101), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:55,944 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 104 states to 104 states and 119 transitions. [2024-11-19 06:37:55,944 INFO L78 Accepts]: Start accepts. Automaton has 104 states and 119 transitions. Word has length 34 [2024-11-19 06:37:55,944 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:55,944 INFO L471 AbstractCegarLoop]: Abstraction has 104 states and 119 transitions. [2024-11-19 06:37:55,944 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:55,945 INFO L276 IsEmpty]: Start isEmpty. Operand 104 states and 119 transitions. [2024-11-19 06:37:55,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-19 06:37:55,945 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:55,946 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:55,947 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-19 06:37:55,947 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:55,947 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:55,947 INFO L85 PathProgramCache]: Analyzing trace with hash -1027983780, now seen corresponding path program 1 times [2024-11-19 06:37:55,947 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:55,947 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [887289757] [2024-11-19 06:37:55,948 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:55,948 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:55,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:56,066 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:56,066 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:56,066 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [887289757] [2024-11-19 06:37:56,066 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [887289757] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:56,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:56,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:37:56,068 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1168303989] [2024-11-19 06:37:56,069 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:56,069 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:37:56,069 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:56,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:37:56,070 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:56,070 INFO L87 Difference]: Start difference. First operand 104 states and 119 transitions. Second operand has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:56,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:56,108 INFO L93 Difference]: Finished difference Result 104 states and 119 transitions. [2024-11-19 06:37:56,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:37:56,109 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 34 [2024-11-19 06:37:56,109 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:56,110 INFO L225 Difference]: With dead ends: 104 [2024-11-19 06:37:56,110 INFO L226 Difference]: Without dead ends: 104 [2024-11-19 06:37:56,110 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:56,111 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 149 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:56,111 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 149 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:56,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2024-11-19 06:37:56,114 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 103. [2024-11-19 06:37:56,115 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 66 states have (on average 1.5151515151515151) internal successors, (100), 90 states have internal predecessors, (100), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:56,116 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 118 transitions. [2024-11-19 06:37:56,116 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 118 transitions. Word has length 34 [2024-11-19 06:37:56,116 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:56,116 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 118 transitions. [2024-11-19 06:37:56,117 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 8.5) internal successors, (17), 3 states have internal predecessors, (17), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:56,117 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 118 transitions. [2024-11-19 06:37:56,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 06:37:56,118 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:56,118 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:56,118 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-19 06:37:56,118 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:56,119 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:56,119 INFO L85 PathProgramCache]: Analyzing trace with hash -1802726114, now seen corresponding path program 1 times [2024-11-19 06:37:56,119 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:56,119 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [771740002] [2024-11-19 06:37:56,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:56,120 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:56,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:56,181 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:56,182 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:56,182 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [771740002] [2024-11-19 06:37:56,182 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [771740002] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:56,182 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:56,182 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:37:56,183 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192720558] [2024-11-19 06:37:56,183 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:56,183 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:37:56,183 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:56,184 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:37:56,184 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:56,184 INFO L87 Difference]: Start difference. First operand 103 states and 118 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:56,220 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:56,220 INFO L93 Difference]: Finished difference Result 103 states and 118 transitions. [2024-11-19 06:37:56,221 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:37:56,221 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2024-11-19 06:37:56,221 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:56,222 INFO L225 Difference]: With dead ends: 103 [2024-11-19 06:37:56,222 INFO L226 Difference]: Without dead ends: 103 [2024-11-19 06:37:56,222 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:56,223 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 8 mSDsluCounter, 54 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 146 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:56,223 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 146 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:56,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2024-11-19 06:37:56,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 102. [2024-11-19 06:37:56,226 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 66 states have (on average 1.5) internal successors, (99), 89 states have internal predecessors, (99), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:56,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 117 transitions. [2024-11-19 06:37:56,226 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 117 transitions. Word has length 35 [2024-11-19 06:37:56,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:56,227 INFO L471 AbstractCegarLoop]: Abstraction has 102 states and 117 transitions. [2024-11-19 06:37:56,227 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:56,227 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 117 transitions. [2024-11-19 06:37:56,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-19 06:37:56,227 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:56,228 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:56,228 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-19 06:37:56,228 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:56,228 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:56,228 INFO L85 PathProgramCache]: Analyzing trace with hash -1802726113, now seen corresponding path program 1 times [2024-11-19 06:37:56,228 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:56,228 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [365469201] [2024-11-19 06:37:56,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:56,229 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:56,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:56,342 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:37:56,342 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:56,342 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [365469201] [2024-11-19 06:37:56,343 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [365469201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:56,343 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:56,343 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:37:56,343 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [394693241] [2024-11-19 06:37:56,343 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:56,343 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:37:56,344 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:56,344 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:37:56,344 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:56,344 INFO L87 Difference]: Start difference. First operand 102 states and 117 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:56,381 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:56,382 INFO L93 Difference]: Finished difference Result 102 states and 117 transitions. [2024-11-19 06:37:56,382 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:37:56,382 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 35 [2024-11-19 06:37:56,383 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:56,383 INFO L225 Difference]: With dead ends: 102 [2024-11-19 06:37:56,383 INFO L226 Difference]: Without dead ends: 102 [2024-11-19 06:37:56,384 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:37:56,384 INFO L432 NwaCegarLoop]: 90 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:56,384 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 145 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:37:56,385 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-11-19 06:37:56,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 101. [2024-11-19 06:37:56,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.4848484848484849) internal successors, (98), 88 states have internal predecessors, (98), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:56,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 116 transitions. [2024-11-19 06:37:56,389 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 116 transitions. Word has length 35 [2024-11-19 06:37:56,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:56,390 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 116 transitions. [2024-11-19 06:37:56,390 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, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:37:56,390 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 116 transitions. [2024-11-19 06:37:56,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-19 06:37:56,391 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:56,393 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:56,393 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-19 06:37:56,393 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:56,393 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:56,393 INFO L85 PathProgramCache]: Analyzing trace with hash 1032731137, now seen corresponding path program 1 times [2024-11-19 06:37:56,394 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:56,394 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1686390863] [2024-11-19 06:37:56,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:56,394 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:56,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:56,684 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:37:56,684 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:56,684 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1686390863] [2024-11-19 06:37:56,685 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1686390863] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:37:56,685 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:37:56,685 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-19 06:37:56,685 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1353580904] [2024-11-19 06:37:56,685 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:37:56,685 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-11-19 06:37:56,686 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:37:56,686 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-11-19 06:37:56,686 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:37:56,686 INFO L87 Difference]: Start difference. First operand 101 states and 116 transitions. Second operand has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:56,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:37:56,916 INFO L93 Difference]: Finished difference Result 132 states and 147 transitions. [2024-11-19 06:37:56,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-19 06:37:56,917 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 38 [2024-11-19 06:37:56,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:37:56,918 INFO L225 Difference]: With dead ends: 132 [2024-11-19 06:37:56,918 INFO L226 Difference]: Without dead ends: 132 [2024-11-19 06:37:56,918 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:37:56,919 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 89 mSDsluCounter, 420 mSDsCounter, 0 mSdLazyCounter, 229 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 496 SdHoareTripleChecker+Invalid, 230 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 229 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:37:56,919 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 496 Invalid, 230 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 229 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:37:56,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-19 06:37:56,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 101. [2024-11-19 06:37:56,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 66 states have (on average 1.4696969696969697) internal successors, (97), 88 states have internal predecessors, (97), 9 states have call successors, (9), 3 states have call predecessors, (9), 3 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:37:56,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 115 transitions. [2024-11-19 06:37:56,923 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 115 transitions. Word has length 38 [2024-11-19 06:37:56,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:37:56,923 INFO L471 AbstractCegarLoop]: Abstraction has 101 states and 115 transitions. [2024-11-19 06:37:56,923 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 3 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-19 06:37:56,924 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 115 transitions. [2024-11-19 06:37:56,924 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-19 06:37:56,924 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:37:56,924 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:37:56,924 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-19 06:37:56,925 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:37:56,925 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:37:56,925 INFO L85 PathProgramCache]: Analyzing trace with hash -1539377740, now seen corresponding path program 1 times [2024-11-19 06:37:56,925 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:37:56,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [643913192] [2024-11-19 06:37:56,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:56,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:37:56,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:57,421 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:37:57,421 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:37:57,421 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [643913192] [2024-11-19 06:37:57,422 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [643913192] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:37:57,422 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1111991424] [2024-11-19 06:37:57,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:37:57,422 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:37:57,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:37:57,424 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-19 06:37:57,425 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-19 06:37:57,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:37:57,523 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-19 06:37:57,526 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:37:57,533 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 7 [2024-11-19 06:37:58,217 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 13 treesize of output 9 [2024-11-19 06:37:58,339 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:58,358 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 19 [2024-11-19 06:37:58,549 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:58,550 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:58,553 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:58,572 INFO L349 Elim1Store]: treesize reduction 21, result has 30.0 percent of original size [2024-11-19 06:37:58,573 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 4 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 67 treesize of output 54 [2024-11-19 06:37:58,591 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-19 06:37:58,591 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 [2024-11-19 06:37:58,633 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:58,634 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:58,638 INFO L349 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2024-11-19 06:37:58,638 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 62 treesize of output 50 [2024-11-19 06:37:58,648 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-19 06:37:58,649 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 11 treesize of output 7 [2024-11-19 06:37:59,402 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:37:59,403 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 6 select indices, 6 select index equivalence classes, 1 disjoint index pairs (out of 15 index pairs), introduced 6 new quantified variables, introduced 15 case distinctions, treesize of input 153 treesize of output 233 [2024-11-19 06:38:15,404 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 18 proven. 3 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2024-11-19 06:38:15,405 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:15,892 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:38:15,893 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 45 treesize of output 63 [2024-11-19 06:38:16,016 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:38:16,016 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 409 treesize of output 369 [2024-11-19 06:38:16,829 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1111991424] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:16,829 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:38:16,829 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13, 15] total 27 [2024-11-19 06:38:16,829 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557365826] [2024-11-19 06:38:16,829 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:16,830 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2024-11-19 06:38:16,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:16,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2024-11-19 06:38:16,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=127, Invalid=1279, Unknown=0, NotChecked=0, Total=1406 [2024-11-19 06:38:16,832 INFO L87 Difference]: Start difference. First operand 101 states and 115 transitions. Second operand has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 06:38:19,758 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:19,759 INFO L93 Difference]: Finished difference Result 146 states and 163 transitions. [2024-11-19 06:38:19,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2024-11-19 06:38:19,759 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) Word has length 37 [2024-11-19 06:38:19,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:19,760 INFO L225 Difference]: With dead ends: 146 [2024-11-19 06:38:19,760 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 06:38:19,761 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 23 SyntacticMatches, 4 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 673 ImplicationChecksByTransitivity, 3.4s TimeCoverageRelationStatistics Valid=369, Invalid=2493, Unknown=0, NotChecked=0, Total=2862 [2024-11-19 06:38:19,762 INFO L432 NwaCegarLoop]: 39 mSDtfsCounter, 329 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 1252 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 332 SdHoareTripleChecker+Valid, 488 SdHoareTripleChecker+Invalid, 1281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 1252 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:19,762 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [332 Valid, 488 Invalid, 1281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 1252 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2024-11-19 06:38:19,763 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 06:38:19,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 103. [2024-11-19 06:38:19,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 89 states have internal predecessors, (97), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:38:19,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 115 transitions. [2024-11-19 06:38:19,766 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 115 transitions. Word has length 37 [2024-11-19 06:38:19,766 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:19,766 INFO L471 AbstractCegarLoop]: Abstraction has 103 states and 115 transitions. [2024-11-19 06:38:19,767 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 1.76) internal successors, (44), 27 states have internal predecessors, (44), 4 states have call successors, (7), 2 states have call predecessors, (7), 4 states have return successors, (8), 6 states have call predecessors, (8), 4 states have call successors, (8) [2024-11-19 06:38:19,767 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 115 transitions. [2024-11-19 06:38:19,767 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-19 06:38:19,767 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:19,767 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:38:19,784 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:19,971 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-19 06:38:19,972 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:19,972 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:19,972 INFO L85 PathProgramCache]: Analyzing trace with hash -1874432272, now seen corresponding path program 1 times [2024-11-19 06:38:19,972 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:19,973 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2056043331] [2024-11-19 06:38:19,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:19,973 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:19,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:20,059 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:20,060 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2056043331] [2024-11-19 06:38:20,061 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2056043331] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:20,061 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [313290575] [2024-11-19 06:38:20,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:20,061 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:20,061 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:20,063 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) [2024-11-19 06:38:20,064 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-19 06:38:20,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:20,160 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-19 06:38:20,162 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:20,182 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:20,183 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:20,222 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:20,223 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [313290575] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:20,223 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:20,223 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-19 06:38:20,223 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [863590318] [2024-11-19 06:38:20,223 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:20,224 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-19 06:38:20,224 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:20,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-19 06:38:20,225 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:38:20,225 INFO L87 Difference]: Start difference. First operand 103 states and 115 transitions. Second operand has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:20,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:20,284 INFO L93 Difference]: Finished difference Result 126 states and 149 transitions. [2024-11-19 06:38:20,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-19 06:38:20,284 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 39 [2024-11-19 06:38:20,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:20,286 INFO L225 Difference]: With dead ends: 126 [2024-11-19 06:38:20,286 INFO L226 Difference]: Without dead ends: 126 [2024-11-19 06:38:20,287 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 74 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:38:20,287 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 9 mSDsluCounter, 329 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 415 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:20,288 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 415 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:20,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-11-19 06:38:20,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 116. [2024-11-19 06:38:20,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 80 states have (on average 1.4625) internal successors, (117), 102 states have internal predecessors, (117), 9 states have call successors, (9), 4 states have call predecessors, (9), 4 states have return successors, (9), 9 states have call predecessors, (9), 9 states have call successors, (9) [2024-11-19 06:38:20,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 135 transitions. [2024-11-19 06:38:20,292 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 135 transitions. Word has length 39 [2024-11-19 06:38:20,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:20,293 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 135 transitions. [2024-11-19 06:38:20,293 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.142857142857143) internal successors, (22), 7 states have internal predecessors, (22), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:20,293 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 135 transitions. [2024-11-19 06:38:20,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-19 06:38:20,293 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:20,294 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:20,312 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-19 06:38:20,497 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:20,498 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:20,498 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:20,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1633101304, now seen corresponding path program 1 times [2024-11-19 06:38:20,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:20,498 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1108533437] [2024-11-19 06:38:20,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:20,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:20,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:20,565 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:20,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:20,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1108533437] [2024-11-19 06:38:20,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1108533437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:20,566 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:20,566 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:38:20,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [355021533] [2024-11-19 06:38:20,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:20,568 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:38:20,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:20,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:38:20,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:38:20,569 INFO L87 Difference]: Start difference. First operand 116 states and 135 transitions. Second operand has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:20,602 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:20,602 INFO L93 Difference]: Finished difference Result 170 states and 194 transitions. [2024-11-19 06:38:20,602 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:38:20,603 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 41 [2024-11-19 06:38:20,603 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:20,604 INFO L225 Difference]: With dead ends: 170 [2024-11-19 06:38:20,604 INFO L226 Difference]: Without dead ends: 170 [2024-11-19 06:38:20,604 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:38:20,605 INFO L432 NwaCegarLoop]: 114 mSDtfsCounter, 48 mSDsluCounter, 426 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:20,605 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 540 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:20,606 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 170 states. [2024-11-19 06:38:20,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 170 to 122. [2024-11-19 06:38:20,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 84 states have (on average 1.4404761904761905) internal successors, (121), 107 states have internal predecessors, (121), 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) [2024-11-19 06:38:20,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 141 transitions. [2024-11-19 06:38:20,610 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 141 transitions. Word has length 41 [2024-11-19 06:38:20,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:20,611 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 141 transitions. [2024-11-19 06:38:20,611 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.6) internal successors, (23), 5 states have internal predecessors, (23), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:20,611 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 141 transitions. [2024-11-19 06:38:20,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 06:38:20,611 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:20,611 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:20,612 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-19 06:38:20,612 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:20,612 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:20,612 INFO L85 PathProgramCache]: Analyzing trace with hash 1747480581, now seen corresponding path program 1 times [2024-11-19 06:38:20,612 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:20,612 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [436768866] [2024-11-19 06:38:20,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:20,613 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:20,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:20,662 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:20,662 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:20,663 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [436768866] [2024-11-19 06:38:20,663 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [436768866] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:20,663 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:20,663 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:38:20,663 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1342659144] [2024-11-19 06:38:20,663 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:20,663 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:38:20,664 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:20,664 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:38:20,664 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:20,664 INFO L87 Difference]: Start difference. First operand 122 states and 141 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:20,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:20,732 INFO L93 Difference]: Finished difference Result 118 states and 137 transitions. [2024-11-19 06:38:20,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:38:20,733 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-11-19 06:38:20,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:20,736 INFO L225 Difference]: With dead ends: 118 [2024-11-19 06:38:20,736 INFO L226 Difference]: Without dead ends: 118 [2024-11-19 06:38:20,736 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 [2024-11-19 06:38:20,737 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 56 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 60 SdHoareTripleChecker+Valid, 138 SdHoareTripleChecker+Invalid, 72 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:20,737 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [60 Valid, 138 Invalid, 72 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:20,738 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-19 06:38:20,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-19 06:38:20,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 84 states have (on average 1.3928571428571428) internal successors, (117), 103 states have internal predecessors, (117), 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) [2024-11-19 06:38:20,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 137 transitions. [2024-11-19 06:38:20,742 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 137 transitions. Word has length 43 [2024-11-19 06:38:20,743 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:20,743 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 137 transitions. [2024-11-19 06:38:20,743 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:20,743 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 137 transitions. [2024-11-19 06:38:20,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 06:38:20,744 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:20,744 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:20,744 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-19 06:38:20,744 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:20,744 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:20,744 INFO L85 PathProgramCache]: Analyzing trace with hash 1747480582, now seen corresponding path program 1 times [2024-11-19 06:38:20,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:20,745 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [149072459] [2024-11-19 06:38:20,745 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:20,745 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:20,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:20,826 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:20,826 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:20,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [149072459] [2024-11-19 06:38:20,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [149072459] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:20,827 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:20,827 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:38:20,827 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150985090] [2024-11-19 06:38:20,827 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:20,827 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:38:20,828 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:20,828 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:38:20,828 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:20,828 INFO L87 Difference]: Start difference. First operand 118 states and 137 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:20,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:20,903 INFO L93 Difference]: Finished difference Result 114 states and 133 transitions. [2024-11-19 06:38:20,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:38:20,903 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 43 [2024-11-19 06:38:20,904 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:20,904 INFO L225 Difference]: With dead ends: 114 [2024-11-19 06:38:20,904 INFO L226 Difference]: Without dead ends: 114 [2024-11-19 06:38:20,905 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 [2024-11-19 06:38:20,905 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 44 mSDsluCounter, 67 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 140 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:20,905 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 140 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:20,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-19 06:38:20,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-19 06:38:20,910 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.3452380952380953) internal successors, (113), 99 states have internal predecessors, (113), 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) [2024-11-19 06:38:20,911 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 133 transitions. [2024-11-19 06:38:20,911 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 133 transitions. Word has length 43 [2024-11-19 06:38:20,911 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:20,911 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 133 transitions. [2024-11-19 06:38:20,911 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 4 states have internal predecessors, (24), 2 states have call successors, (5), 1 states have call predecessors, (5), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:20,911 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 133 transitions. [2024-11-19 06:38:20,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-19 06:38:20,912 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:20,912 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:20,912 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-19 06:38:20,912 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:20,913 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:20,913 INFO L85 PathProgramCache]: Analyzing trace with hash -531163462, now seen corresponding path program 1 times [2024-11-19 06:38:20,913 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:20,913 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1065182177] [2024-11-19 06:38:20,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:20,913 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:20,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:20,962 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:20,963 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:20,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1065182177] [2024-11-19 06:38:20,963 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1065182177] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:20,963 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [164937845] [2024-11-19 06:38:20,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:20,963 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:20,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:20,965 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) [2024-11-19 06:38:20,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-19 06:38:21,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:21,061 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-19 06:38:21,062 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:21,078 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:21,078 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:21,114 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:21,114 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [164937845] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:21,114 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:21,114 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-19 06:38:21,114 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [285556533] [2024-11-19 06:38:21,114 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:21,115 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-19 06:38:21,115 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:21,115 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-19 06:38:21,115 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-19 06:38:21,115 INFO L87 Difference]: Start difference. First operand 114 states and 133 transitions. Second operand has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:21,157 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:21,157 INFO L93 Difference]: Finished difference Result 114 states and 131 transitions. [2024-11-19 06:38:21,158 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:38:21,158 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 43 [2024-11-19 06:38:21,158 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:21,159 INFO L225 Difference]: With dead ends: 114 [2024-11-19 06:38:21,159 INFO L226 Difference]: Without dead ends: 114 [2024-11-19 06:38:21,159 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 91 GetRequests, 83 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-19 06:38:21,159 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 8 mSDsluCounter, 218 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 297 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:21,159 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 297 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:21,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-19 06:38:21,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-19 06:38:21,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 84 states have (on average 1.3214285714285714) internal successors, (111), 99 states have internal predecessors, (111), 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) [2024-11-19 06:38:21,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 131 transitions. [2024-11-19 06:38:21,165 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 131 transitions. Word has length 43 [2024-11-19 06:38:21,165 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:21,165 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 131 transitions. [2024-11-19 06:38:21,165 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 5.0) internal successors, (25), 5 states have internal predecessors, (25), 2 states have call successors, (5), 2 states have call predecessors, (5), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:21,166 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 131 transitions. [2024-11-19 06:38:21,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-19 06:38:21,168 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:21,168 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:21,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-11-19 06:38:21,369 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:21,369 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:21,370 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:21,370 INFO L85 PathProgramCache]: Analyzing trace with hash 1184442711, now seen corresponding path program 2 times [2024-11-19 06:38:21,370 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:21,370 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1983081591] [2024-11-19 06:38:21,370 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:21,370 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:21,387 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:21,387 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:21,614 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 6 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-19 06:38:21,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1983081591] [2024-11-19 06:38:21,615 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1983081591] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:21,615 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [367322615] [2024-11-19 06:38:21,615 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:21,615 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:21,615 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:21,617 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) [2024-11-19 06:38:21,619 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-19 06:38:21,729 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:21,729 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:21,730 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 11 conjuncts are in the unsatisfiable core [2024-11-19 06:38:21,733 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:21,895 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:21,895 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:21,958 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 26 [2024-11-19 06:38:22,072 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 4 proven. 9 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:22,072 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [367322615] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:22,072 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:22,072 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8, 8] total 24 [2024-11-19 06:38:22,072 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668833022] [2024-11-19 06:38:22,072 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:22,073 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-19 06:38:22,073 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:22,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-19 06:38:22,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=97, Invalid=503, Unknown=0, NotChecked=0, Total=600 [2024-11-19 06:38:22,074 INFO L87 Difference]: Start difference. First operand 114 states and 131 transitions. Second operand has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-19 06:38:22,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:22,593 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2024-11-19 06:38:22,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:38:22,593 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 44 [2024-11-19 06:38:22,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:22,594 INFO L225 Difference]: With dead ends: 122 [2024-11-19 06:38:22,594 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 06:38:22,595 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 292 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=366, Invalid=1356, Unknown=0, NotChecked=0, Total=1722 [2024-11-19 06:38:22,595 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 167 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 172 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 438 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:22,596 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [172 Valid, 381 Invalid, 438 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 426 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:38:22,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 06:38:22,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 113. [2024-11-19 06:38:22,599 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 84 states have (on average 1.2976190476190477) internal successors, (109), 98 states have internal predecessors, (109), 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) [2024-11-19 06:38:22,600 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 129 transitions. [2024-11-19 06:38:22,600 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 129 transitions. Word has length 44 [2024-11-19 06:38:22,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:22,601 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 129 transitions. [2024-11-19 06:38:22,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 2.875) internal successors, (69), 25 states have internal predecessors, (69), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-19 06:38:22,601 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 129 transitions. [2024-11-19 06:38:22,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-19 06:38:22,602 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:22,602 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:38:22,620 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-19 06:38:22,806 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:22,807 INFO L396 AbstractCegarLoop]: === Iteration 22 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:22,807 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:22,807 INFO L85 PathProgramCache]: Analyzing trace with hash 1321655688, now seen corresponding path program 2 times [2024-11-19 06:38:22,808 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:22,808 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1117079217] [2024-11-19 06:38:22,808 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:22,808 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:22,857 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:22,858 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:23,827 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-19 06:38:23,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:23,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1117079217] [2024-11-19 06:38:23,828 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1117079217] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:23,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [175823019] [2024-11-19 06:38:23,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:23,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:23,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:23,829 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) [2024-11-19 06:38:23,830 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-19 06:38:23,925 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:23,925 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:23,926 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 54 conjuncts are in the unsatisfiable core [2024-11-19 06:38:23,929 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:24,108 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2024-11-19 06:38:24,164 INFO L349 Elim1Store]: treesize reduction 21, result has 34.4 percent of original size [2024-11-19 06:38:24,164 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 23 [2024-11-19 06:38:24,507 INFO L349 Elim1Store]: treesize reduction 8, result has 82.2 percent of original size [2024-11-19 06:38:24,507 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 0 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 43 treesize of output 46 [2024-11-19 06:38:24,743 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:38:24,743 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:25,092 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:38:25,092 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 515 treesize of output 447 [2024-11-19 06:38:26,836 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:38:26,836 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [175823019] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:26,836 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:26,837 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 44 [2024-11-19 06:38:26,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347489378] [2024-11-19 06:38:26,837 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:26,837 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-19 06:38:26,837 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:26,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-19 06:38:26,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=152, Invalid=1740, Unknown=0, NotChecked=0, Total=1892 [2024-11-19 06:38:26,838 INFO L87 Difference]: Start difference. First operand 113 states and 129 transitions. Second operand has 44 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 39 states have internal predecessors, (67), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-19 06:38:29,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:29,419 INFO L93 Difference]: Finished difference Result 170 states and 201 transitions. [2024-11-19 06:38:29,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:38:29,419 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 39 states have internal predecessors, (67), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) Word has length 46 [2024-11-19 06:38:29,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:29,420 INFO L225 Difference]: With dead ends: 170 [2024-11-19 06:38:29,420 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 06:38:29,422 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 124 GetRequests, 66 SyntacticMatches, 0 SemanticMatches, 58 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 629 ImplicationChecksByTransitivity, 2.9s TimeCoverageRelationStatistics Valid=410, Invalid=3130, Unknown=0, NotChecked=0, Total=3540 [2024-11-19 06:38:29,422 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 272 mSDsluCounter, 1256 mSDsCounter, 0 mSdLazyCounter, 1017 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 272 SdHoareTripleChecker+Valid, 1319 SdHoareTripleChecker+Invalid, 1036 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 1017 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:29,422 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [272 Valid, 1319 Invalid, 1036 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 1017 Invalid, 0 Unknown, 0 Unchecked, 1.0s Time] [2024-11-19 06:38:29,423 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 06:38:29,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 116. [2024-11-19 06:38:29,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 87 states have (on average 1.2758620689655173) internal successors, (111), 101 states have internal predecessors, (111), 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) [2024-11-19 06:38:29,427 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2024-11-19 06:38:29,427 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 46 [2024-11-19 06:38:29,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:29,427 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2024-11-19 06:38:29,428 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 36 states have (on average 1.8611111111111112) internal successors, (67), 39 states have internal predecessors, (67), 10 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 10 states have call predecessors, (10), 9 states have call successors, (10) [2024-11-19 06:38:29,428 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2024-11-19 06:38:29,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2024-11-19 06:38:29,428 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:29,429 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:38:29,446 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:29,629 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,SelfDestructingSolverStorable21 [2024-11-19 06:38:29,630 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:29,630 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:29,630 INFO L85 PathProgramCache]: Analyzing trace with hash -1936981637, now seen corresponding path program 1 times [2024-11-19 06:38:29,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:29,630 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1642280913] [2024-11-19 06:38:29,630 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:29,630 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:29,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:29,792 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:29,793 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:29,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1642280913] [2024-11-19 06:38:29,793 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1642280913] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:29,793 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1266447437] [2024-11-19 06:38:29,793 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:29,793 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:29,794 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:29,795 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) [2024-11-19 06:38:29,797 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2024-11-19 06:38:29,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:29,902 INFO L255 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 13 conjuncts are in the unsatisfiable core [2024-11-19 06:38:29,904 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:30,080 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:30,080 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:30,142 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 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 30 treesize of output 26 [2024-11-19 06:38:30,242 INFO L134 CoverageAnalysis]: Checked inductivity of 39 backedges. 4 proven. 11 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:30,243 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1266447437] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:30,243 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:30,243 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 25 [2024-11-19 06:38:30,243 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1063504058] [2024-11-19 06:38:30,243 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:30,243 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2024-11-19 06:38:30,243 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:30,244 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2024-11-19 06:38:30,244 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=104, Invalid=546, Unknown=0, NotChecked=0, Total=650 [2024-11-19 06:38:30,244 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 26 states, 25 states have (on average 2.96) internal successors, (74), 26 states have internal predecessors, (74), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-19 06:38:30,725 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:30,725 INFO L93 Difference]: Finished difference Result 125 states and 140 transitions. [2024-11-19 06:38:30,726 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-19 06:38:30,726 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.96) internal successors, (74), 26 states have internal predecessors, (74), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) Word has length 45 [2024-11-19 06:38:30,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:30,727 INFO L225 Difference]: With dead ends: 125 [2024-11-19 06:38:30,727 INFO L226 Difference]: Without dead ends: 125 [2024-11-19 06:38:30,728 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 73 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 373 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=376, Invalid=1430, Unknown=0, NotChecked=0, Total=1806 [2024-11-19 06:38:30,728 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 129 mSDsluCounter, 631 mSDsCounter, 0 mSdLazyCounter, 553 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 134 SdHoareTripleChecker+Valid, 706 SdHoareTripleChecker+Invalid, 562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 553 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:30,728 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [134 Valid, 706 Invalid, 562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 553 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-19 06:38:30,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-19 06:38:30,731 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 116. [2024-11-19 06:38:30,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 87 states have (on average 1.264367816091954) internal successors, (110), 101 states have internal predecessors, (110), 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) [2024-11-19 06:38:30,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2024-11-19 06:38:30,732 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 45 [2024-11-19 06:38:30,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:30,732 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2024-11-19 06:38:30,732 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.96) internal successors, (74), 26 states have internal predecessors, (74), 4 states have call successors, (10), 1 states have call predecessors, (10), 1 states have return successors, (10), 4 states have call predecessors, (10), 4 states have call successors, (10) [2024-11-19 06:38:30,733 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2024-11-19 06:38:30,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-19 06:38:30,733 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:30,733 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:38:30,751 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:30,937 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,SelfDestructingSolverStorable22 [2024-11-19 06:38:30,938 INFO L396 AbstractCegarLoop]: === Iteration 24 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:30,938 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:30,938 INFO L85 PathProgramCache]: Analyzing trace with hash -1072087752, now seen corresponding path program 1 times [2024-11-19 06:38:30,938 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:30,938 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1447452947] [2024-11-19 06:38:30,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:30,938 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:30,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:31,066 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:31,067 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:31,067 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1447452947] [2024-11-19 06:38:31,067 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1447452947] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:31,067 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:31,067 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-19 06:38:31,067 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1210884856] [2024-11-19 06:38:31,068 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:31,068 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-19 06:38:31,068 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:31,069 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-19 06:38:31,069 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-19 06:38:31,069 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:31,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:31,137 INFO L93 Difference]: Finished difference Result 146 states and 165 transitions. [2024-11-19 06:38:31,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-19 06:38:31,137 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 49 [2024-11-19 06:38:31,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:31,139 INFO L225 Difference]: With dead ends: 146 [2024-11-19 06:38:31,139 INFO L226 Difference]: Without dead ends: 146 [2024-11-19 06:38:31,139 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:38:31,140 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 25 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 365 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 [2024-11-19 06:38:31,141 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 365 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:31,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 146 states. [2024-11-19 06:38:31,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 146 to 124. [2024-11-19 06:38:31,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 94 states have (on average 1.2446808510638299) internal successors, (117), 108 states have internal predecessors, (117), 11 states have call successors, (11), 5 states have call predecessors, (11), 5 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 06:38:31,144 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 139 transitions. [2024-11-19 06:38:31,145 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 139 transitions. Word has length 49 [2024-11-19 06:38:31,145 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:31,145 INFO L471 AbstractCegarLoop]: Abstraction has 124 states and 139 transitions. [2024-11-19 06:38:31,145 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.833333333333333) internal successors, (29), 6 states have internal predecessors, (29), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:31,148 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 139 transitions. [2024-11-19 06:38:31,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-19 06:38:31,148 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:31,148 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:38:31,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-19 06:38:31,149 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:31,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:31,149 INFO L85 PathProgramCache]: Analyzing trace with hash 1469727509, now seen corresponding path program 1 times [2024-11-19 06:38:31,149 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:31,149 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1061268766] [2024-11-19 06:38:31,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:31,149 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:31,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:31,399 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:31,400 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:31,400 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1061268766] [2024-11-19 06:38:31,400 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1061268766] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:31,400 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:31,401 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-19 06:38:31,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840705569] [2024-11-19 06:38:31,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:31,401 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-19 06:38:31,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:31,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-19 06:38:31,402 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2024-11-19 06:38:31,402 INFO L87 Difference]: Start difference. First operand 124 states and 139 transitions. Second operand has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:31,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:31,579 INFO L93 Difference]: Finished difference Result 150 states and 168 transitions. [2024-11-19 06:38:31,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:38:31,580 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 51 [2024-11-19 06:38:31,580 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:31,581 INFO L225 Difference]: With dead ends: 150 [2024-11-19 06:38:31,583 INFO L226 Difference]: Without dead ends: 150 [2024-11-19 06:38:31,583 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2024-11-19 06:38:31,583 INFO L432 NwaCegarLoop]: 73 mSDtfsCounter, 30 mSDsluCounter, 657 mSDsCounter, 0 mSdLazyCounter, 255 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 730 SdHoareTripleChecker+Invalid, 258 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 255 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:31,584 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 730 Invalid, 258 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 255 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:31,584 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2024-11-19 06:38:31,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 131. [2024-11-19 06:38:31,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 131 states, 99 states have (on average 1.2323232323232323) internal successors, (122), 114 states have internal predecessors, (122), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 06:38:31,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 146 transitions. [2024-11-19 06:38:31,592 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 146 transitions. Word has length 51 [2024-11-19 06:38:31,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:31,592 INFO L471 AbstractCegarLoop]: Abstraction has 131 states and 146 transitions. [2024-11-19 06:38:31,593 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 2.8181818181818183) internal successors, (31), 11 states have internal predecessors, (31), 3 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2024-11-19 06:38:31,593 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 146 transitions. [2024-11-19 06:38:31,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2024-11-19 06:38:31,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:31,593 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 4, 4, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:31,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-19 06:38:31,593 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:31,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:31,594 INFO L85 PathProgramCache]: Analyzing trace with hash -240036236, now seen corresponding path program 2 times [2024-11-19 06:38:31,594 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:31,594 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394328818] [2024-11-19 06:38:31,594 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:31,594 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:31,613 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:31,613 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:31,695 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:31,696 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394328818] [2024-11-19 06:38:31,696 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394328818] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:31,696 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1895879258] [2024-11-19 06:38:31,696 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-19 06:38:31,696 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:31,696 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:31,698 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) [2024-11-19 06:38:31,700 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2024-11-19 06:38:31,817 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-19 06:38:31,818 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:31,819 INFO L255 TraceCheckSpWp]: Trace formula consists of 239 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:38:31,820 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:31,848 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:31,849 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:31,912 INFO L134 CoverageAnalysis]: Checked inductivity of 53 backedges. 8 proven. 21 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-19 06:38:31,913 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1895879258] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:31,913 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:31,913 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 9 [2024-11-19 06:38:31,913 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1074716138] [2024-11-19 06:38:31,913 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:31,914 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-11-19 06:38:31,914 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:31,914 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-11-19 06:38:31,914 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2024-11-19 06:38:31,915 INFO L87 Difference]: Start difference. First operand 131 states and 146 transitions. Second operand has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:32,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:32,014 INFO L93 Difference]: Finished difference Result 168 states and 193 transitions. [2024-11-19 06:38:32,015 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:38:32,015 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 50 [2024-11-19 06:38:32,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:32,016 INFO L225 Difference]: With dead ends: 168 [2024-11-19 06:38:32,016 INFO L226 Difference]: Without dead ends: 168 [2024-11-19 06:38:32,017 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 109 GetRequests, 94 SyntacticMatches, 6 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:38:32,017 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 19 mSDsluCounter, 450 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 530 SdHoareTripleChecker+Invalid, 126 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:32,017 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 530 Invalid, 126 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:32,018 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2024-11-19 06:38:32,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 152. [2024-11-19 06:38:32,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 120 states have (on average 1.25) internal successors, (150), 135 states have internal predecessors, (150), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 06:38:32,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 174 transitions. [2024-11-19 06:38:32,021 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 174 transitions. Word has length 50 [2024-11-19 06:38:32,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:32,022 INFO L471 AbstractCegarLoop]: Abstraction has 152 states and 174 transitions. [2024-11-19 06:38:32,022 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 3.6666666666666665) internal successors, (33), 9 states have internal predecessors, (33), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:32,022 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 174 transitions. [2024-11-19 06:38:32,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 06:38:32,022 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:32,022 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:38:32,040 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Forceful destruction successful, exit code 0 [2024-11-19 06:38:32,223 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable25 [2024-11-19 06:38:32,224 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:32,224 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:32,224 INFO L85 PathProgramCache]: Analyzing trace with hash 1761512429, now seen corresponding path program 1 times [2024-11-19 06:38:32,224 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:32,224 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [810540505] [2024-11-19 06:38:32,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:32,224 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:32,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:32,277 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:38:32,277 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:32,277 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [810540505] [2024-11-19 06:38:32,277 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [810540505] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:32,277 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:32,277 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-19 06:38:32,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [123177670] [2024-11-19 06:38:32,278 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:32,278 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-19 06:38:32,278 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:32,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-19 06:38:32,278 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-19 06:38:32,279 INFO L87 Difference]: Start difference. First operand 152 states and 174 transitions. Second operand has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:38:32,343 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:32,343 INFO L93 Difference]: Finished difference Result 148 states and 170 transitions. [2024-11-19 06:38:32,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-19 06:38:32,344 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2024-11-19 06:38:32,344 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:32,344 INFO L225 Difference]: With dead ends: 148 [2024-11-19 06:38:32,345 INFO L226 Difference]: Without dead ends: 148 [2024-11-19 06:38:32,345 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 [2024-11-19 06:38:32,345 INFO L432 NwaCegarLoop]: 65 mSDtfsCounter, 41 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 129 SdHoareTripleChecker+Invalid, 63 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 59 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:32,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 129 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:32,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 148 states. [2024-11-19 06:38:32,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 148 to 148. [2024-11-19 06:38:32,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 148 states, 120 states have (on average 1.2166666666666666) internal successors, (146), 131 states have internal predecessors, (146), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 06:38:32,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 148 states to 148 states and 170 transitions. [2024-11-19 06:38:32,351 INFO L78 Accepts]: Start accepts. Automaton has 148 states and 170 transitions. Word has length 54 [2024-11-19 06:38:32,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:32,351 INFO L471 AbstractCegarLoop]: Abstraction has 148 states and 170 transitions. [2024-11-19 06:38:32,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 10.0) internal successors, (30), 4 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:38:32,352 INFO L276 IsEmpty]: Start isEmpty. Operand 148 states and 170 transitions. [2024-11-19 06:38:32,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-19 06:38:32,352 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:32,352 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:38:32,352 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-19 06:38:32,352 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:32,353 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:32,353 INFO L85 PathProgramCache]: Analyzing trace with hash 1761512430, now seen corresponding path program 1 times [2024-11-19 06:38:32,353 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:32,353 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [156221012] [2024-11-19 06:38:32,353 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:32,354 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:32,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:32,418 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:38:32,419 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:32,419 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [156221012] [2024-11-19 06:38:32,419 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [156221012] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:32,419 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:32,419 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-19 06:38:32,419 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402993782] [2024-11-19 06:38:32,420 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:32,420 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-19 06:38:32,420 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:32,420 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-19 06:38:32,420 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:38:32,421 INFO L87 Difference]: Start difference. First operand 148 states and 170 transitions. Second operand has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:38:32,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:32,455 INFO L93 Difference]: Finished difference Result 144 states and 166 transitions. [2024-11-19 06:38:32,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-19 06:38:32,455 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 54 [2024-11-19 06:38:32,455 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:32,456 INFO L225 Difference]: With dead ends: 144 [2024-11-19 06:38:32,456 INFO L226 Difference]: Without dead ends: 144 [2024-11-19 06:38:32,456 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-19 06:38:32,457 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 21 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:32,457 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 89 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-19 06:38:32,458 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2024-11-19 06:38:32,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 144. [2024-11-19 06:38:32,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 144 states, 120 states have (on average 1.1833333333333333) internal successors, (142), 127 states have internal predecessors, (142), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 06:38:32,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 144 states to 144 states and 166 transitions. [2024-11-19 06:38:32,461 INFO L78 Accepts]: Start accepts. Automaton has 144 states and 166 transitions. Word has length 54 [2024-11-19 06:38:32,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:32,461 INFO L471 AbstractCegarLoop]: Abstraction has 144 states and 166 transitions. [2024-11-19 06:38:32,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 15.0) internal successors, (30), 3 states have internal predecessors, (30), 2 states have call successors, (6), 1 states have call predecessors, (6), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:38:32,461 INFO L276 IsEmpty]: Start isEmpty. Operand 144 states and 166 transitions. [2024-11-19 06:38:32,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2024-11-19 06:38:32,462 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:32,462 INFO L215 NwaCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:32,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2024-11-19 06:38:32,462 INFO L396 AbstractCegarLoop]: === Iteration 29 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:32,462 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:32,462 INFO L85 PathProgramCache]: Analyzing trace with hash -1631590995, now seen corresponding path program 3 times [2024-11-19 06:38:32,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:32,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1251496360] [2024-11-19 06:38:32,463 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:32,463 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:32,475 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:38:32,475 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:32,563 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 06:38:32,563 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:32,563 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1251496360] [2024-11-19 06:38:32,563 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1251496360] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:32,564 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [250520278] [2024-11-19 06:38:32,564 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:32,564 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:32,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:32,566 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) [2024-11-19 06:38:32,567 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Waiting until timeout for monitored process [2024-11-19 06:38:32,683 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 3 check-sat command(s) [2024-11-19 06:38:32,684 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:32,685 INFO L255 TraceCheckSpWp]: Trace formula consists of 170 conjuncts, 8 conjuncts are in the unsatisfiable core [2024-11-19 06:38:32,686 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:32,728 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 31 proven. 6 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 06:38:32,729 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:32,952 INFO L134 CoverageAnalysis]: Checked inductivity of 72 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2024-11-19 06:38:32,952 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [250520278] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-19 06:38:32,953 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-19 06:38:32,953 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8, 8] total 15 [2024-11-19 06:38:32,953 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [478213995] [2024-11-19 06:38:32,953 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:32,953 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2024-11-19 06:38:32,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:32,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2024-11-19 06:38:32,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=64, Invalid=176, Unknown=0, NotChecked=0, Total=240 [2024-11-19 06:38:32,954 INFO L87 Difference]: Start difference. First operand 144 states and 166 transitions. Second operand has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:33,170 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:33,170 INFO L93 Difference]: Finished difference Result 145 states and 166 transitions. [2024-11-19 06:38:33,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-19 06:38:33,171 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) Word has length 55 [2024-11-19 06:38:33,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:33,172 INFO L225 Difference]: With dead ends: 145 [2024-11-19 06:38:33,172 INFO L226 Difference]: Without dead ends: 145 [2024-11-19 06:38:33,172 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=179, Invalid=373, Unknown=0, NotChecked=0, Total=552 [2024-11-19 06:38:33,173 INFO L432 NwaCegarLoop]: 79 mSDtfsCounter, 30 mSDsluCounter, 360 mSDsCounter, 0 mSdLazyCounter, 272 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 439 SdHoareTripleChecker+Invalid, 278 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 272 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:33,173 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 439 Invalid, 278 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 272 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:33,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-19 06:38:33,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 143. [2024-11-19 06:38:33,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 143 states, 120 states have (on average 1.1666666666666667) internal successors, (140), 126 states have internal predecessors, (140), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 06:38:33,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 164 transitions. [2024-11-19 06:38:33,177 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 164 transitions. Word has length 55 [2024-11-19 06:38:33,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:33,177 INFO L471 AbstractCegarLoop]: Abstraction has 143 states and 164 transitions. [2024-11-19 06:38:33,178 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 3.0) internal successors, (45), 16 states have internal predecessors, (45), 1 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 1 states have call successors, (4) [2024-11-19 06:38:33,178 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 164 transitions. [2024-11-19 06:38:33,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-19 06:38:33,178 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:33,178 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-19 06:38:33,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (14)] Ended with exit code 0 [2024-11-19 06:38:33,382 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,SelfDestructingSolverStorable28 [2024-11-19 06:38:33,383 INFO L396 AbstractCegarLoop]: === Iteration 30 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:33,383 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:33,383 INFO L85 PathProgramCache]: Analyzing trace with hash -1652247074, now seen corresponding path program 1 times [2024-11-19 06:38:33,383 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:33,384 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [649550649] [2024-11-19 06:38:33,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:38:33,384 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:33,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:38:33,553 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:38:33,553 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:33,554 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [649550649] [2024-11-19 06:38:33,554 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [649550649] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:38:33,554 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:38:33,554 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-19 06:38:33,554 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2141217155] [2024-11-19 06:38:33,554 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:38:33,554 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:38:33,555 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:33,555 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:38:33,555 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-19 06:38:33,555 INFO L87 Difference]: Start difference. First operand 143 states and 164 transitions. Second operand has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:38:33,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:33,654 INFO L93 Difference]: Finished difference Result 159 states and 182 transitions. [2024-11-19 06:38:33,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-19 06:38:33,655 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 60 [2024-11-19 06:38:33,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:33,655 INFO L225 Difference]: With dead ends: 159 [2024-11-19 06:38:33,655 INFO L226 Difference]: Without dead ends: 159 [2024-11-19 06:38:33,656 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:38:33,656 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 14 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 410 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:33,656 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 410 Invalid, 136 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:38:33,657 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2024-11-19 06:38:33,659 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 147. [2024-11-19 06:38:33,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 147 states, 124 states have (on average 1.1612903225806452) internal successors, (144), 129 states have internal predecessors, (144), 12 states have call successors, (12), 6 states have call predecessors, (12), 6 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 06:38:33,660 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 147 states to 147 states and 168 transitions. [2024-11-19 06:38:33,660 INFO L78 Accepts]: Start accepts. Automaton has 147 states and 168 transitions. Word has length 60 [2024-11-19 06:38:33,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:33,661 INFO L471 AbstractCegarLoop]: Abstraction has 147 states and 168 transitions. [2024-11-19 06:38:33,661 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.375) internal successors, (35), 8 states have internal predecessors, (35), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:38:33,661 INFO L276 IsEmpty]: Start isEmpty. Operand 147 states and 168 transitions. [2024-11-19 06:38:33,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-19 06:38:33,662 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:33,662 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-19 06:38:33,662 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2024-11-19 06:38:33,662 INFO L396 AbstractCegarLoop]: === Iteration 31 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:38:33,662 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:38:33,663 INFO L85 PathProgramCache]: Analyzing trace with hash -1022012216, now seen corresponding path program 3 times [2024-11-19 06:38:33,663 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:38:33,663 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [685221086] [2024-11-19 06:38:33,663 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:33,663 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:38:33,713 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 06:38:33,713 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:36,393 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 36 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:38:36,393 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:38:36,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [685221086] [2024-11-19 06:38:36,393 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [685221086] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:36,393 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1401567437] [2024-11-19 06:38:36,393 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-19 06:38:36,394 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:38:36,394 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:38:36,395 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) [2024-11-19 06:38:36,396 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Waiting until timeout for monitored process [2024-11-19 06:38:36,542 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-19 06:38:36,542 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-19 06:38:36,543 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 61 conjuncts are in the unsatisfiable core [2024-11-19 06:38:36,546 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:38:36,549 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 7 treesize of output 6 [2024-11-19 06:38:36,950 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 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 22 treesize of output 17 [2024-11-19 06:38:37,046 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 45 treesize of output 40 [2024-11-19 06:38:39,384 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 103 treesize of output 85 [2024-11-19 06:38:39,533 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 28 proven. 17 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-19 06:38:39,533 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-19 06:38:49,629 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1401567437] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:38:49,629 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-19 06:38:49,629 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [30, 21] total 49 [2024-11-19 06:38:49,630 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1803455329] [2024-11-19 06:38:49,630 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-19 06:38:49,630 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-19 06:38:49,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:38:49,631 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-19 06:38:49,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=357, Invalid=4195, Unknown=4, NotChecked=0, Total=4556 [2024-11-19 06:38:49,632 INFO L87 Difference]: Start difference. First operand 147 states and 168 transitions. Second operand has 49 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 49 states have internal predecessors, (76), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 06:38:59,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:38:59,871 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2024-11-19 06:38:59,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2024-11-19 06:38:59,872 INFO L78 Accepts]: Start accepts. Automaton has has 49 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 49 states have internal predecessors, (76), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) Word has length 59 [2024-11-19 06:38:59,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:38:59,873 INFO L225 Difference]: With dead ends: 128 [2024-11-19 06:38:59,873 INFO L226 Difference]: Without dead ends: 128 [2024-11-19 06:38:59,874 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 151 GetRequests, 53 SyntacticMatches, 6 SemanticMatches, 92 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2120 ImplicationChecksByTransitivity, 21.6s TimeCoverageRelationStatistics Valid=934, Invalid=7804, Unknown=4, NotChecked=0, Total=8742 [2024-11-19 06:38:59,874 INFO L432 NwaCegarLoop]: 55 mSDtfsCounter, 334 mSDsluCounter, 1156 mSDsCounter, 0 mSdLazyCounter, 1514 mSolverCounterSat, 40 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 334 SdHoareTripleChecker+Valid, 1211 SdHoareTripleChecker+Invalid, 1554 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 40 IncrementalHoareTripleChecker+Valid, 1514 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.2s IncrementalHoareTripleChecker+Time [2024-11-19 06:38:59,875 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [334 Valid, 1211 Invalid, 1554 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [40 Valid, 1514 Invalid, 0 Unknown, 0 Unchecked, 2.2s Time] [2024-11-19 06:38:59,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-19 06:38:59,877 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 108. [2024-11-19 06:38:59,877 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 86 states have (on average 1.1046511627906976) internal successors, (95), 90 states have internal predecessors, (95), 11 states have call successors, (11), 6 states have call predecessors, (11), 6 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-19 06:38:59,877 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2024-11-19 06:38:59,877 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 59 [2024-11-19 06:38:59,878 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:38:59,878 INFO L471 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2024-11-19 06:38:59,878 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 49 states, 48 states have (on average 1.5833333333333333) internal successors, (76), 49 states have internal predecessors, (76), 4 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 4 states have call predecessors, (7), 3 states have call successors, (7) [2024-11-19 06:38:59,878 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2024-11-19 06:38:59,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 06:38:59,879 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:38:59,879 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2024-11-19 06:38:59,897 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (15)] Ended with exit code 0 [2024-11-19 06:39:00,079 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30,15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:39:00,080 INFO L396 AbstractCegarLoop]: === Iteration 32 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:39:00,080 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:00,080 INFO L85 PathProgramCache]: Analyzing trace with hash -1596955717, now seen corresponding path program 1 times [2024-11-19 06:39:00,080 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:00,080 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849958723] [2024-11-19 06:39:00,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:00,081 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:00,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:00,303 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-19 06:39:00,304 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:00,304 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849958723] [2024-11-19 06:39:00,304 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849958723] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:00,304 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-19 06:39:00,304 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-11-19 06:39:00,304 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1689218205] [2024-11-19 06:39:00,304 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:00,304 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-19 06:39:00,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:00,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-19 06:39:00,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2024-11-19 06:39:00,305 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:39:00,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-19 06:39:00,459 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2024-11-19 06:39:00,459 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-11-19 06:39:00,459 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) Word has length 62 [2024-11-19 06:39:00,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-19 06:39:00,460 INFO L225 Difference]: With dead ends: 122 [2024-11-19 06:39:00,460 INFO L226 Difference]: Without dead ends: 122 [2024-11-19 06:39:00,460 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=126, Unknown=0, NotChecked=0, Total=156 [2024-11-19 06:39:00,460 INFO L432 NwaCegarLoop]: 75 mSDtfsCounter, 23 mSDsluCounter, 449 mSDsCounter, 0 mSdLazyCounter, 178 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 524 SdHoareTripleChecker+Invalid, 178 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 178 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-19 06:39:00,461 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [26 Valid, 524 Invalid, 178 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 178 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-19 06:39:00,461 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-19 06:39:00,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 113. [2024-11-19 06:39:00,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 89 states have (on average 1.101123595505618) internal successors, (98), 94 states have internal predecessors, (98), 12 states have call successors, (12), 7 states have call predecessors, (12), 7 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-19 06:39:00,464 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2024-11-19 06:39:00,467 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 62 [2024-11-19 06:39:00,467 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-19 06:39:00,468 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2024-11-19 06:39:00,468 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.111111111111111) internal successors, (37), 9 states have internal predecessors, (37), 3 states have call successors, (7), 2 states have call predecessors, (7), 1 states have return successors, (6), 2 states have call predecessors, (6), 2 states have call successors, (6) [2024-11-19 06:39:00,468 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2024-11-19 06:39:00,469 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2024-11-19 06:39:00,469 INFO L207 NwaCegarLoop]: Found error trace [2024-11-19 06:39:00,469 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 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] [2024-11-19 06:39:00,469 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2024-11-19 06:39:00,469 INFO L396 AbstractCegarLoop]: === Iteration 33 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-19 06:39:00,469 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-19 06:39:00,469 INFO L85 PathProgramCache]: Analyzing trace with hash 2000715256, now seen corresponding path program 1 times [2024-11-19 06:39:00,470 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-19 06:39:00,470 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [174430901] [2024-11-19 06:39:00,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:00,470 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-19 06:39:00,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:00,641 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-19 06:39:00,642 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-19 06:39:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [174430901] [2024-11-19 06:39:00,642 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [174430901] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-19 06:39:00,642 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1980501490] [2024-11-19 06:39:00,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-19 06:39:00,642 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-19 06:39:00,642 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-19 06:39:00,644 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) [2024-11-19 06:39:00,646 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2024-11-19 06:39:00,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-19 06:39:00,783 INFO L255 TraceCheckSpWp]: Trace formula consists of 278 conjuncts, 15 conjuncts are in the unsatisfiable core [2024-11-19 06:39:00,786 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-19 06:39:00,942 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 15 treesize of output 1 [2024-11-19 06:39:01,034 INFO L173 IndexEqualityManager]: detected equality via solver [2024-11-19 06:39:01,037 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-19 06:39:01,037 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 10 [2024-11-19 06:39:01,041 INFO L134 CoverageAnalysis]: Checked inductivity of 43 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2024-11-19 06:39:01,042 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-19 06:39:01,042 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1980501490] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-19 06:39:01,042 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-19 06:39:01,042 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 11 [2024-11-19 06:39:01,042 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894051036] [2024-11-19 06:39:01,043 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-19 06:39:01,043 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-19 06:39:01,043 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-19 06:39:01,044 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-19 06:39:01,044 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=88, Unknown=0, NotChecked=0, Total=110 [2024-11-19 06:39:01,044 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 8 states, 8 states have (on average 4.625) internal successors, (37), 8 states have internal predecessors, (37), 3 states have call successors, (6), 3 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5)