./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version fca748b1 Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/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-wip.dd.update-z3-fca748b-m [2024-11-20 14:33:25,809 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-20 14:33:25,905 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-20 14:33:25,913 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-20 14:33:25,915 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-20 14:33:25,936 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-20 14:33:25,937 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-20 14:33:25,938 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-20 14:33:25,938 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-20 14:33:25,940 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-20 14:33:25,941 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-20 14:33:25,941 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-20 14:33:25,942 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-20 14:33:25,942 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-20 14:33:25,944 INFO L153 SettingsManager]: * Use SBE=true [2024-11-20 14:33:25,945 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-20 14:33:25,945 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-20 14:33:25,945 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-20 14:33:25,946 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-20 14:33:25,946 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-20 14:33:25,946 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-20 14:33:25,950 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-20 14:33:25,950 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-20 14:33:25,951 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-20 14:33:25,951 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-20 14:33:25,951 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-20 14:33:25,951 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-20 14:33:25,952 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-20 14:33:25,952 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-20 14:33:25,952 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-11-20 14:33:25,953 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-20 14:33:25,953 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-20 14:33:25,953 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-20 14:33:25,953 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:33:25,953 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-20 14:33:25,954 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-20 14:33:25,954 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-20 14:33:25,954 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-20 14:33:25,954 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-20 14:33:25,955 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-20 14:33:25,955 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-20 14:33:25,955 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-20 14:33:25,956 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ac76721ba91522692e2c3e4d1ea27df0200031dd012c5066cc7280e0ae6e2244 [2024-11-20 14:33:26,233 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-20 14:33:26,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-20 14:33:26,263 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-20 14:33:26,265 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-20 14:33:26,265 INFO L274 PluginConnector]: CDTParser initialized [2024-11-20 14:33:26,266 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c [2024-11-20 14:33:27,761 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-20 14:33:27,963 INFO L384 CDTParser]: Found 1 translation units. [2024-11-20 14:33:27,963 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/verifythis/duplets.c [2024-11-20 14:33:27,971 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8bbc4028/e482f963d9ec4bb896b8ecb8b70249b3/FLAG85c6c385f [2024-11-20 14:33:27,984 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b8bbc4028/e482f963d9ec4bb896b8ecb8b70249b3 [2024-11-20 14:33:27,987 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-20 14:33:27,988 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-20 14:33:27,990 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-20 14:33:27,990 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-20 14:33:27,996 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-20 14:33:27,997 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:33:27" (1/1) ... [2024-11-20 14:33:27,998 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@635aba71 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:27, skipping insertion in model container [2024-11-20 14:33:27,998 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 02:33:27" (1/1) ... [2024-11-20 14:33:28,024 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-20 14:33:28,257 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:33:28,271 INFO L200 MainTranslator]: Completed pre-run [2024-11-20 14:33:28,301 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-20 14:33:28,327 INFO L204 MainTranslator]: Completed translation [2024-11-20 14:33:28,328 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28 WrapperNode [2024-11-20 14:33:28,328 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-20 14:33:28,329 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-20 14:33:28,329 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-20 14:33:28,330 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-20 14:33:28,337 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,346 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,375 INFO L138 Inliner]: procedures = 21, calls = 44, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 132 [2024-11-20 14:33:28,379 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-20 14:33:28,380 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-20 14:33:28,380 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-20 14:33:28,380 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-20 14:33:28,392 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,392 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,395 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,411 INFO L175 MemorySlicer]: Split 19 memory accesses to 4 slices as follows [2, 5, 5, 7]. 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, 1, 1, 3]. [2024-11-20 14:33:28,415 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,416 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,423 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,427 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,428 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,430 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,432 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-20 14:33:28,433 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-11-20 14:33:28,433 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-11-20 14:33:28,434 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-11-20 14:33:28,435 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (1/1) ... [2024-11-20 14:33:28,442 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-20 14:33:28,456 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:28,478 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) [2024-11-20 14:33:28,486 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 [2024-11-20 14:33:28,535 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-20 14:33:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2024-11-20 14:33:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2024-11-20 14:33:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-20 14:33:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-20 14:33:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-20 14:33:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#3 [2024-11-20 14:33:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2024-11-20 14:33:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-11-20 14:33:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-11-20 14:33:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-11-20 14:33:28,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#3 [2024-11-20 14:33:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-20 14:33:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-20 14:33:28,540 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-20 14:33:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-11-20 14:33:28,540 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-11-20 14:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-11-20 14:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#3 [2024-11-20 14:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2024-11-20 14:33:28,541 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2024-11-20 14:33:28,541 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-20 14:33:28,679 INFO L238 CfgBuilder]: Building ICFG [2024-11-20 14:33:28,681 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-20 14:33:29,113 INFO L? ?]: Removed 107 outVars from TransFormulas that were not future-live. [2024-11-20 14:33:29,114 INFO L287 CfgBuilder]: Performing block encoding [2024-11-20 14:33:29,134 INFO L311 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-20 14:33:29,135 INFO L316 CfgBuilder]: Removed 2 assume(true) statements. [2024-11-20 14:33:29,135 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:33:29 BoogieIcfgContainer [2024-11-20 14:33:29,135 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-11-20 14:33:29,139 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-20 14:33:29,141 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-20 14:33:29,144 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-20 14:33:29,144 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 02:33:27" (1/3) ... [2024-11-20 14:33:29,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308fe350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:33:29, skipping insertion in model container [2024-11-20 14:33:29,145 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 02:33:28" (2/3) ... [2024-11-20 14:33:29,145 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@308fe350 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 02:33:29, skipping insertion in model container [2024-11-20 14:33:29,146 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 02:33:29" (3/3) ... [2024-11-20 14:33:29,147 INFO L112 eAbstractionObserver]: Analyzing ICFG duplets.c [2024-11-20 14:33:29,165 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-20 14:33:29,165 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 37 error locations. [2024-11-20 14:33:29,229 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-20 14:33:29,239 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;@57ef72e1, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-20 14:33:29,240 INFO L334 AbstractCegarLoop]: Starting to check reachability of 37 error locations. [2024-11-20 14:33:29,245 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) [2024-11-20 14:33:29,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 14:33:29,255 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:29,256 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:29,260 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)] === [2024-11-20 14:33:29,266 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:29,266 INFO L85 PathProgramCache]: Analyzing trace with hash 1682769483, now seen corresponding path program 1 times [2024-11-20 14:33:29,276 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:29,277 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1724029823] [2024-11-20 14:33:29,277 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:29,278 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:29,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,436 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:29,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,444 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:29,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,451 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:29,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,457 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:29,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,464 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:29,465 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:29,465 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1724029823] [2024-11-20 14:33:29,466 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1724029823] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:29,466 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:29,467 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:33:29,468 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [279551919] [2024-11-20 14:33:29,469 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:29,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-20 14:33:29,474 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:29,509 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-20 14:33:29,510 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 14:33:29,513 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 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 14:33:29,535 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:29,535 INFO L93 Difference]: Finished difference Result 101 states and 112 transitions. [2024-11-20 14:33:29,536 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-20 14:33:29,538 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 1 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 [2024-11-20 14:33:29,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:29,545 INFO L225 Difference]: With dead ends: 101 [2024-11-20 14:33:29,545 INFO L226 Difference]: Without dead ends: 99 [2024-11-20 14:33:29,547 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-20 14:33:29,550 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 [2024-11-20 14:33:29,552 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] [2024-11-20 14:33:29,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 99 states. [2024-11-20 14:33:29,584 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 99 to 99. [2024-11-20 14:33:29,586 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) [2024-11-20 14:33:29,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 110 transitions. [2024-11-20 14:33:29,590 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 110 transitions. Word has length 26 [2024-11-20 14:33:29,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:29,590 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 110 transitions. [2024-11-20 14:33:29,591 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 4.5) internal successors, (9), 2 states have internal predecessors, (9), 2 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 1 states have call predecessors, (4), 2 states have call successors, (4) [2024-11-20 14:33:29,591 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 110 transitions. [2024-11-20 14:33:29,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 14:33:29,593 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:29,593 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:29,593 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-20 14:33:29,594 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)] === [2024-11-20 14:33:29,594 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:29,595 INFO L85 PathProgramCache]: Analyzing trace with hash 230580555, now seen corresponding path program 1 times [2024-11-20 14:33:29,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:29,595 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [653529746] [2024-11-20 14:33:29,595 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:29,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:29,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,864 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:29,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,869 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:29,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,877 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:29,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,885 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:29,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:29,895 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:29,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:29,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [653529746] [2024-11-20 14:33:29,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [653529746] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:29,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:29,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:33:29,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680197269] [2024-11-20 14:33:29,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:29,902 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:33:29,902 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:29,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:33:29,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:33:29,903 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) [2024-11-20 14:33:30,060 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:30,061 INFO L93 Difference]: Finished difference Result 97 states and 108 transitions. [2024-11-20 14:33:30,061 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:33:30,062 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 [2024-11-20 14:33:30,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:30,064 INFO L225 Difference]: With dead ends: 97 [2024-11-20 14:33:30,064 INFO L226 Difference]: Without dead ends: 97 [2024-11-20 14:33:30,067 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:33:30,068 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 [2024-11-20 14:33:30,069 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] [2024-11-20 14:33:30,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2024-11-20 14:33:30,079 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2024-11-20 14:33:30,082 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) [2024-11-20 14:33:30,084 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 108 transitions. [2024-11-20 14:33:30,086 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 108 transitions. Word has length 26 [2024-11-20 14:33:30,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:30,088 INFO L471 AbstractCegarLoop]: Abstraction has 97 states and 108 transitions. [2024-11-20 14:33:30,089 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) [2024-11-20 14:33:30,089 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 108 transitions. [2024-11-20 14:33:30,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2024-11-20 14:33:30,090 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:30,091 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:30,092 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-20 14:33:30,092 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)] === [2024-11-20 14:33:30,093 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:30,094 INFO L85 PathProgramCache]: Analyzing trace with hash 230580556, now seen corresponding path program 1 times [2024-11-20 14:33:30,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:30,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1536255347] [2024-11-20 14:33:30,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:30,095 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:30,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,574 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:30,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,614 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:30,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,640 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:30,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,649 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:30,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,659 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 14:33:30,659 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:30,661 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1536255347] [2024-11-20 14:33:30,661 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1536255347] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:30,662 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1735394357] [2024-11-20 14:33:30,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:30,662 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:30,662 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:30,666 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) [2024-11-20 14:33:30,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-20 14:33:30,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:30,749 INFO L255 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 29 conjuncts are in the unsatisfiable core [2024-11-20 14:33:30,756 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:30,854 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 [2024-11-20 14:33:31,354 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 8 proven. 12 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2024-11-20 14:33:31,355 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:31,804 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 14:33:31,805 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1735394357] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:31,805 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:31,805 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 11, 7] total 19 [2024-11-20 14:33:31,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1618143650] [2024-11-20 14:33:31,806 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:31,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2024-11-20 14:33:31,806 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:31,808 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2024-11-20 14:33:31,809 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=312, Unknown=0, NotChecked=0, Total=380 [2024-11-20 14:33:31,810 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) [2024-11-20 14:33:35,914 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] [2024-11-20 14:33:36,476 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:36,479 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2024-11-20 14:33:36,480 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:33:36,480 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 [2024-11-20 14:33:36,481 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:36,482 INFO L225 Difference]: With dead ends: 132 [2024-11-20 14:33:36,482 INFO L226 Difference]: Without dead ends: 132 [2024-11-20 14:33:36,483 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=122, Invalid=528, Unknown=0, NotChecked=0, Total=650 [2024-11-20 14:33:36,484 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 344 mSDsluCounter, 611 mSDsCounter, 0 mSdLazyCounter, 605 mSolverCounterSat, 45 mSolverCounterUnsat, 1 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 4.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 345 SdHoareTripleChecker+Valid, 688 SdHoareTripleChecker+Invalid, 651 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 605 IncrementalHoareTripleChecker+Invalid, 1 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 4.5s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:36,484 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [345 Valid, 688 Invalid, 651 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 605 Invalid, 1 Unknown, 0 Unchecked, 4.5s Time] [2024-11-20 14:33:36,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-20 14:33:36,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 100. [2024-11-20 14:33:36,492 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) [2024-11-20 14:33:36,493 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 110 transitions. [2024-11-20 14:33:36,494 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 110 transitions. Word has length 26 [2024-11-20 14:33:36,494 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:36,494 INFO L471 AbstractCegarLoop]: Abstraction has 100 states and 110 transitions. [2024-11-20 14:33:36,494 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) [2024-11-20 14:33:36,494 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 110 transitions. [2024-11-20 14:33:36,495 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2024-11-20 14:33:36,495 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:36,495 INFO L215 NwaCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-20 14:33:36,504 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-20 14:33:36,699 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:36,700 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)] === [2024-11-20 14:33:36,700 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:36,700 INFO L85 PathProgramCache]: Analyzing trace with hash -1441937394, now seen corresponding path program 1 times [2024-11-20 14:33:36,701 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:36,701 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [226586250] [2024-11-20 14:33:36,701 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:36,701 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:36,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:37,010 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:37,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:37,048 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:37,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:37,059 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:37,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:37,106 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:37,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:37,117 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 9 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-11-20 14:33:37,118 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [226586250] [2024-11-20 14:33:37,119 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [226586250] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:37,119 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [339313528] [2024-11-20 14:33:37,121 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:37,122 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:37,122 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:37,123 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) [2024-11-20 14:33:37,125 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-20 14:33:37,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:37,197 INFO L255 TraceCheckSpWp]: Trace formula consists of 115 conjuncts, 32 conjuncts are in the unsatisfiable core [2024-11-20 14:33:37,201 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:37,238 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 [2024-11-20 14:33:38,011 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 14 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-11-20 14:33:38,013 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:38,601 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 3 proven. 12 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 14:33:38,602 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [339313528] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:38,602 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:38,602 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 11, 10] total 24 [2024-11-20 14:33:38,602 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [675721042] [2024-11-20 14:33:38,602 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:38,603 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-11-20 14:33:38,603 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:38,604 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-11-20 14:33:38,604 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=92, Invalid=508, Unknown=0, NotChecked=0, Total=600 [2024-11-20 14:33:38,604 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) [2024-11-20 14:33:39,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:39,563 INFO L93 Difference]: Finished difference Result 131 states and 143 transitions. [2024-11-20 14:33:39,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-11-20 14:33:39,564 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 [2024-11-20 14:33:39,565 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:39,565 INFO L225 Difference]: With dead ends: 131 [2024-11-20 14:33:39,566 INFO L226 Difference]: Without dead ends: 131 [2024-11-20 14:33:39,566 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 42 SyntacticMatches, 3 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 238 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=155, Invalid=775, Unknown=0, NotChecked=0, Total=930 [2024-11-20 14:33:39,567 INFO L432 NwaCegarLoop]: 61 mSDtfsCounter, 456 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 628 mSolverCounterSat, 55 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 457 SdHoareTripleChecker+Valid, 646 SdHoareTripleChecker+Invalid, 683 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 55 IncrementalHoareTripleChecker+Valid, 628 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:39,567 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [457 Valid, 646 Invalid, 683 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [55 Valid, 628 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2024-11-20 14:33:39,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 131 states. [2024-11-20 14:33:39,575 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 131 to 99. [2024-11-20 14:33:39,575 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) [2024-11-20 14:33:39,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 109 transitions. [2024-11-20 14:33:39,579 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 109 transitions. Word has length 27 [2024-11-20 14:33:39,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:39,580 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 109 transitions. [2024-11-20 14:33:39,580 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) [2024-11-20 14:33:39,580 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 109 transitions. [2024-11-20 14:33:39,581 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 14:33:39,581 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:39,581 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] [2024-11-20 14:33:39,590 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2024-11-20 14:33:39,781 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,SelfDestructingSolverStorable3 [2024-11-20 14:33:39,782 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)] === [2024-11-20 14:33:39,783 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:39,783 INFO L85 PathProgramCache]: Analyzing trace with hash -559990634, now seen corresponding path program 1 times [2024-11-20 14:33:39,783 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:39,786 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [877603120] [2024-11-20 14:33:39,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:39,787 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:39,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,019 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:40,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,022 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:40,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,026 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:40,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,029 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:40,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,033 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:40,033 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:40,033 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [877603120] [2024-11-20 14:33:40,034 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [877603120] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:40,034 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:40,034 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-11-20 14:33:40,034 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2081408384] [2024-11-20 14:33:40,034 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:40,035 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:33:40,035 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:40,035 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:33:40,035 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:33:40,035 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) [2024-11-20 14:33:40,207 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:40,208 INFO L93 Difference]: Finished difference Result 94 states and 104 transitions. [2024-11-20 14:33:40,208 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:33:40,209 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 [2024-11-20 14:33:40,209 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:40,210 INFO L225 Difference]: With dead ends: 94 [2024-11-20 14:33:40,210 INFO L226 Difference]: Without dead ends: 94 [2024-11-20 14:33:40,210 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:33:40,212 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 78 mSDsluCounter, 124 mSDsCounter, 0 mSdLazyCounter, 188 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 83 SdHoareTripleChecker+Valid, 190 SdHoareTripleChecker+Invalid, 193 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 188 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:40,213 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [83 Valid, 190 Invalid, 193 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 188 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:33:40,214 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-11-20 14:33:40,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-11-20 14:33:40,225 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) [2024-11-20 14:33:40,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2024-11-20 14:33:40,226 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 31 [2024-11-20 14:33:40,227 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:40,227 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2024-11-20 14:33:40,227 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) [2024-11-20 14:33:40,227 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2024-11-20 14:33:40,232 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2024-11-20 14:33:40,232 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:40,232 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] [2024-11-20 14:33:40,232 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-11-20 14:33:40,232 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)] === [2024-11-20 14:33:40,233 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:40,233 INFO L85 PathProgramCache]: Analyzing trace with hash -559990633, now seen corresponding path program 1 times [2024-11-20 14:33:40,233 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:40,233 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1823801424] [2024-11-20 14:33:40,233 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:40,233 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:40,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,526 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:40,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,529 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:40,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,535 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:40,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,546 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:40,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:40,554 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:40,555 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:40,555 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1823801424] [2024-11-20 14:33:40,555 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1823801424] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:40,555 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:40,556 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:33:40,556 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1993190285] [2024-11-20 14:33:40,556 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:40,557 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:33:40,557 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:40,557 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:33:40,558 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:33:40,558 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2024-11-20 14:33:40,865 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:40,866 INFO L93 Difference]: Finished difference Result 125 states and 144 transitions. [2024-11-20 14:33:40,866 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:33:40,866 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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 [2024-11-20 14:33:40,867 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:40,867 INFO L225 Difference]: With dead ends: 125 [2024-11-20 14:33:40,867 INFO L226 Difference]: Without dead ends: 125 [2024-11-20 14:33:40,868 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:33:40,869 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 80 mSDsluCounter, 175 mSDsCounter, 0 mSdLazyCounter, 278 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 85 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 280 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 278 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:40,869 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [85 Valid, 238 Invalid, 280 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 278 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:33:40,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2024-11-20 14:33:40,874 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 113. [2024-11-20 14:33:40,874 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 70 states have (on average 1.6571428571428573) internal successors, (116), 97 states have internal predecessors, (116), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:40,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 140 transitions. [2024-11-20 14:33:40,879 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 140 transitions. Word has length 31 [2024-11-20 14:33:40,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:40,879 INFO L471 AbstractCegarLoop]: Abstraction has 113 states and 140 transitions. [2024-11-20 14:33:40,879 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 7 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) [2024-11-20 14:33:40,879 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 140 transitions. [2024-11-20 14:33:40,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-11-20 14:33:40,880 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:40,880 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] [2024-11-20 14:33:40,880 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-11-20 14:33:40,881 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)] === [2024-11-20 14:33:40,881 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:40,881 INFO L85 PathProgramCache]: Analyzing trace with hash -179840453, now seen corresponding path program 1 times [2024-11-20 14:33:40,881 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:40,881 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1292230809] [2024-11-20 14:33:40,882 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:40,882 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:40,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:41,515 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:41,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:41,518 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:41,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:41,536 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:41,552 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:41,600 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:41,600 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:41,600 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1292230809] [2024-11-20 14:33:41,600 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1292230809] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:41,600 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:41,601 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2024-11-20 14:33:41,601 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838153413] [2024-11-20 14:33:41,601 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:41,601 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 14:33:41,601 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:41,602 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 14:33:41,602 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:33:41,602 INFO L87 Difference]: Start difference. First operand 113 states and 140 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) [2024-11-20 14:33:42,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:42,051 INFO L93 Difference]: Finished difference Result 136 states and 157 transitions. [2024-11-20 14:33:42,051 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-20 14:33:42,052 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 [2024-11-20 14:33:42,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:42,053 INFO L225 Difference]: With dead ends: 136 [2024-11-20 14:33:42,053 INFO L226 Difference]: Without dead ends: 136 [2024-11-20 14:33:42,053 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2024-11-20 14:33:42,053 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 105 mSDsluCounter, 295 mSDsCounter, 0 mSdLazyCounter, 427 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 359 SdHoareTripleChecker+Invalid, 428 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 427 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:42,054 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [110 Valid, 359 Invalid, 428 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 427 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-20 14:33:42,054 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-20 14:33:42,061 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2024-11-20 14:33:42,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 73 states have (on average 1.643835616438356) internal successors, (120), 100 states have internal predecessors, (120), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:42,064 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 144 transitions. [2024-11-20 14:33:42,064 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 144 transitions. Word has length 32 [2024-11-20 14:33:42,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:42,064 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 144 transitions. [2024-11-20 14:33:42,065 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) [2024-11-20 14:33:42,065 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 144 transitions. [2024-11-20 14:33:42,066 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 14:33:42,068 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:42,069 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] [2024-11-20 14:33:42,069 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-11-20 14:33:42,069 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)] === [2024-11-20 14:33:42,069 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:42,070 INFO L85 PathProgramCache]: Analyzing trace with hash 1549055201, now seen corresponding path program 1 times [2024-11-20 14:33:42,070 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:42,070 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [956043131] [2024-11-20 14:33:42,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:42,070 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:42,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:42,217 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:42,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:42,219 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:42,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:42,223 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:42,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:42,250 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:42,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:42,254 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:42,254 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:42,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [956043131] [2024-11-20 14:33:42,254 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [956043131] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:42,254 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1583538202] [2024-11-20 14:33:42,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:42,255 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:42,255 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:42,257 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) [2024-11-20 14:33:42,259 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-20 14:33:42,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:42,344 INFO L255 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 16 conjuncts are in the unsatisfiable core [2024-11-20 14:33:42,346 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:42,442 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:42,443 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:42,630 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 6 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:42,630 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1583538202] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:42,630 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:42,631 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 8] total 17 [2024-11-20 14:33:42,631 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [408221523] [2024-11-20 14:33:42,631 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:42,631 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2024-11-20 14:33:42,631 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:42,632 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2024-11-20 14:33:42,632 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=226, Unknown=0, NotChecked=0, Total=272 [2024-11-20 14:33:42,633 INFO L87 Difference]: Start difference. First operand 116 states and 144 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) [2024-11-20 14:33:42,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:42,870 INFO L93 Difference]: Finished difference Result 136 states and 151 transitions. [2024-11-20 14:33:42,870 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 14:33:42,871 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 [2024-11-20 14:33:42,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:42,872 INFO L225 Difference]: With dead ends: 136 [2024-11-20 14:33:42,872 INFO L226 Difference]: Without dead ends: 136 [2024-11-20 14:33:42,873 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 68 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2024-11-20 14:33:42,873 INFO L432 NwaCegarLoop]: 84 mSDtfsCounter, 122 mSDsluCounter, 901 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 985 SdHoareTripleChecker+Invalid, 239 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:42,874 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 985 Invalid, 239 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 235 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:33:42,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136 states. [2024-11-20 14:33:42,883 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 136 to 116. [2024-11-20 14:33:42,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 73 states have (on average 1.63013698630137) internal successors, (119), 100 states have internal predecessors, (119), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:42,884 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 143 transitions. [2024-11-20 14:33:42,884 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 143 transitions. Word has length 35 [2024-11-20 14:33:42,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:42,885 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 143 transitions. [2024-11-20 14:33:42,885 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) [2024-11-20 14:33:42,885 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 143 transitions. [2024-11-20 14:33:42,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 14:33:42,885 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:42,886 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] [2024-11-20 14:33:42,899 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-20 14:33:43,086 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:43,086 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)] === [2024-11-20 14:33:43,087 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:43,087 INFO L85 PathProgramCache]: Analyzing trace with hash -1029157449, now seen corresponding path program 1 times [2024-11-20 14:33:43,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:43,087 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1984359771] [2024-11-20 14:33:43,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:43,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:43,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,151 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:43,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,153 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:43,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,156 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:43,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,157 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:43,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,159 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:43,160 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1984359771] [2024-11-20 14:33:43,160 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1984359771] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:43,160 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1834885454] [2024-11-20 14:33:43,160 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:43,160 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:43,161 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:43,163 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) [2024-11-20 14:33:43,164 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-20 14:33:43,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,236 INFO L255 TraceCheckSpWp]: Trace formula consists of 185 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 14:33:43,237 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:43,245 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:43,245 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-20 14:33:43,245 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1834885454] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:43,245 INFO L185 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2024-11-20 14:33:43,246 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 6 [2024-11-20 14:33:43,246 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1697211455] [2024-11-20 14:33:43,246 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:43,246 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:33:43,246 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:43,247 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:33:43,247 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:33:43,247 INFO L87 Difference]: Start difference. First operand 116 states and 143 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) [2024-11-20 14:33:43,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:43,282 INFO L93 Difference]: Finished difference Result 128 states and 160 transitions. [2024-11-20 14:33:43,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-11-20 14:33:43,283 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 [2024-11-20 14:33:43,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:43,284 INFO L225 Difference]: With dead ends: 128 [2024-11-20 14:33:43,284 INFO L226 Difference]: Without dead ends: 128 [2024-11-20 14:33:43,284 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:33:43,285 INFO L432 NwaCegarLoop]: 92 mSDtfsCounter, 7 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 268 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 [2024-11-20 14:33:43,286 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 268 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:43,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2024-11-20 14:33:43,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 119. [2024-11-20 14:33:43,295 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 76 states have (on average 1.618421052631579) internal successors, (123), 103 states have internal predecessors, (123), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:43,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 147 transitions. [2024-11-20 14:33:43,296 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 147 transitions. Word has length 34 [2024-11-20 14:33:43,296 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:43,297 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 147 transitions. [2024-11-20 14:33:43,297 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) [2024-11-20 14:33:43,297 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 147 transitions. [2024-11-20 14:33:43,297 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 14:33:43,297 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:43,298 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] [2024-11-20 14:33:43,306 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-11-20 14:33:43,498 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:43,499 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)] === [2024-11-20 14:33:43,499 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:43,499 INFO L85 PathProgramCache]: Analyzing trace with hash -1027983781, now seen corresponding path program 1 times [2024-11-20 14:33:43,499 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:43,499 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091789088] [2024-11-20 14:33:43,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:43,500 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:43,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,576 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:43,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:43,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,581 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:43,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:43,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,585 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:43,585 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:43,585 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091789088] [2024-11-20 14:33:43,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091789088] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:43,586 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:43,586 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:33:43,586 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534845319] [2024-11-20 14:33:43,586 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:43,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:33:43,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:43,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:33:43,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:43,587 INFO L87 Difference]: Start difference. First operand 119 states and 147 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) [2024-11-20 14:33:43,630 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:43,630 INFO L93 Difference]: Finished difference Result 119 states and 147 transitions. [2024-11-20 14:33:43,631 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:33:43,631 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 [2024-11-20 14:33:43,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:43,632 INFO L225 Difference]: With dead ends: 119 [2024-11-20 14:33:43,632 INFO L226 Difference]: Without dead ends: 119 [2024-11-20 14:33:43,632 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:43,633 INFO L432 NwaCegarLoop]: 96 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 152 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 [2024-11-20 14:33:43,633 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 152 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:43,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2024-11-20 14:33:43,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 118. [2024-11-20 14:33:43,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 76 states have (on average 1.605263157894737) internal successors, (122), 102 states have internal predecessors, (122), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:43,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 146 transitions. [2024-11-20 14:33:43,638 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 146 transitions. Word has length 34 [2024-11-20 14:33:43,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:43,638 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 146 transitions. [2024-11-20 14:33:43,638 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) [2024-11-20 14:33:43,638 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 146 transitions. [2024-11-20 14:33:43,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2024-11-20 14:33:43,639 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:43,639 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] [2024-11-20 14:33:43,639 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-11-20 14:33:43,639 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)] === [2024-11-20 14:33:43,640 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:43,640 INFO L85 PathProgramCache]: Analyzing trace with hash -1027983780, now seen corresponding path program 1 times [2024-11-20 14:33:43,640 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:43,640 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1203482201] [2024-11-20 14:33:43,640 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:43,640 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:43,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,764 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:43,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:43,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,768 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:43,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,770 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:43,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,772 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:43,772 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:43,772 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1203482201] [2024-11-20 14:33:43,772 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1203482201] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:43,772 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:43,772 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:33:43,773 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668363607] [2024-11-20 14:33:43,773 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:43,773 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:33:43,773 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:43,774 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:33:43,774 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:43,774 INFO L87 Difference]: Start difference. First operand 118 states and 146 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) [2024-11-20 14:33:43,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:43,816 INFO L93 Difference]: Finished difference Result 118 states and 146 transitions. [2024-11-20 14:33:43,817 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:33:43,817 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 [2024-11-20 14:33:43,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:43,818 INFO L225 Difference]: With dead ends: 118 [2024-11-20 14:33:43,818 INFO L226 Difference]: Without dead ends: 118 [2024-11-20 14:33:43,818 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:43,819 INFO L432 NwaCegarLoop]: 94 mSDtfsCounter, 8 mSDsluCounter, 57 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 151 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 [2024-11-20 14:33:43,819 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 151 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:43,820 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-20 14:33:43,823 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 117. [2024-11-20 14:33:43,824 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 76 states have (on average 1.5921052631578947) internal successors, (121), 101 states have internal predecessors, (121), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:43,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 145 transitions. [2024-11-20 14:33:43,825 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 145 transitions. Word has length 34 [2024-11-20 14:33:43,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:43,825 INFO L471 AbstractCegarLoop]: Abstraction has 117 states and 145 transitions. [2024-11-20 14:33:43,826 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) [2024-11-20 14:33:43,826 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 145 transitions. [2024-11-20 14:33:43,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 14:33:43,827 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:43,827 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] [2024-11-20 14:33:43,827 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-11-20 14:33:43,828 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)] === [2024-11-20 14:33:43,828 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:43,828 INFO L85 PathProgramCache]: Analyzing trace with hash -1802726114, now seen corresponding path program 1 times [2024-11-20 14:33:43,828 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:43,828 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1265441085] [2024-11-20 14:33:43,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:43,829 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:43,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,890 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:43,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,892 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:43,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,894 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:43,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,897 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:43,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:43,900 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:43,900 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:43,900 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1265441085] [2024-11-20 14:33:43,900 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1265441085] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:43,901 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:43,901 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:33:43,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228745253] [2024-11-20 14:33:43,902 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:43,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:33:43,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:43,903 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:33:43,903 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:43,904 INFO L87 Difference]: Start difference. First operand 117 states and 145 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) [2024-11-20 14:33:43,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:43,941 INFO L93 Difference]: Finished difference Result 117 states and 145 transitions. [2024-11-20 14:33:43,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:33:43,942 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 [2024-11-20 14:33:43,942 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:43,943 INFO L225 Difference]: With dead ends: 117 [2024-11-20 14:33:43,943 INFO L226 Difference]: Without dead ends: 117 [2024-11-20 14:33:43,943 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:43,944 INFO L432 NwaCegarLoop]: 93 mSDtfsCounter, 8 mSDsluCounter, 55 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 148 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 [2024-11-20 14:33:43,944 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 148 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:43,944 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2024-11-20 14:33:43,947 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 116. [2024-11-20 14:33:43,948 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 76 states have (on average 1.5789473684210527) internal successors, (120), 100 states have internal predecessors, (120), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:43,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 144 transitions. [2024-11-20 14:33:43,950 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 144 transitions. Word has length 35 [2024-11-20 14:33:43,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:43,950 INFO L471 AbstractCegarLoop]: Abstraction has 116 states and 144 transitions. [2024-11-20 14:33:43,950 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) [2024-11-20 14:33:43,950 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 144 transitions. [2024-11-20 14:33:43,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2024-11-20 14:33:43,951 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:43,951 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] [2024-11-20 14:33:43,951 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-11-20 14:33:43,952 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)] === [2024-11-20 14:33:43,952 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:43,952 INFO L85 PathProgramCache]: Analyzing trace with hash -1802726113, now seen corresponding path program 1 times [2024-11-20 14:33:43,952 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:43,952 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1830152662] [2024-11-20 14:33:43,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:43,953 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:43,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,035 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:44,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:44,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,039 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:44,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,041 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:44,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,043 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:44,043 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:44,043 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1830152662] [2024-11-20 14:33:44,044 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1830152662] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:44,044 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:44,044 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:33:44,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346608069] [2024-11-20 14:33:44,044 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:44,044 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:33:44,044 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:44,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:33:44,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:44,045 INFO L87 Difference]: Start difference. First operand 116 states and 144 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) [2024-11-20 14:33:44,085 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:44,086 INFO L93 Difference]: Finished difference Result 116 states and 144 transitions. [2024-11-20 14:33:44,086 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:33:44,086 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 [2024-11-20 14:33:44,086 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:44,087 INFO L225 Difference]: With dead ends: 116 [2024-11-20 14:33:44,087 INFO L226 Difference]: Without dead ends: 116 [2024-11-20 14:33:44,087 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:33:44,088 INFO L432 NwaCegarLoop]: 91 mSDtfsCounter, 8 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 147 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 [2024-11-20 14:33:44,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 147 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:33:44,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2024-11-20 14:33:44,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2024-11-20 14:33:44,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 99 states have internal predecessors, (119), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:44,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 143 transitions. [2024-11-20 14:33:44,092 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 143 transitions. Word has length 35 [2024-11-20 14:33:44,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:44,092 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 143 transitions. [2024-11-20 14:33:44,092 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) [2024-11-20 14:33:44,092 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 143 transitions. [2024-11-20 14:33:44,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2024-11-20 14:33:44,093 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:44,093 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] [2024-11-20 14:33:44,093 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-11-20 14:33:44,093 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)] === [2024-11-20 14:33:44,094 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:44,094 INFO L85 PathProgramCache]: Analyzing trace with hash 1032731137, now seen corresponding path program 1 times [2024-11-20 14:33:44,094 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:44,094 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686773552] [2024-11-20 14:33:44,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:44,094 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:44,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,407 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:44,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:44,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,415 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:44,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,420 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:44,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:44,454 INFO L134 CoverageAnalysis]: Checked inductivity of 25 backedges. 10 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:44,455 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:44,455 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686773552] [2024-11-20 14:33:44,455 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [686773552] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:44,455 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:44,455 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 14:33:44,455 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1451824187] [2024-11-20 14:33:44,456 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:44,456 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 14:33:44,456 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:44,456 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 14:33:44,457 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:33:44,457 INFO L87 Difference]: Start difference. First operand 115 states and 143 transitions. Second operand has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 14:33:44,835 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:44,836 INFO L93 Difference]: Finished difference Result 133 states and 148 transitions. [2024-11-20 14:33:44,836 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 14:33:44,836 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2024-11-20 14:33:44,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:44,837 INFO L225 Difference]: With dead ends: 133 [2024-11-20 14:33:44,837 INFO L226 Difference]: Without dead ends: 133 [2024-11-20 14:33:44,837 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2024-11-20 14:33:44,838 INFO L432 NwaCegarLoop]: 77 mSDtfsCounter, 91 mSDsluCounter, 513 mSDsCounter, 0 mSdLazyCounter, 325 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 590 SdHoareTripleChecker+Invalid, 326 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 325 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:44,838 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 590 Invalid, 326 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 325 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:33:44,839 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2024-11-20 14:33:44,842 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 115. [2024-11-20 14:33:44,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 99 states have internal predecessors, (118), 12 states have call successors, (12), 3 states have call predecessors, (12), 3 states have return successors, (12), 12 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:33:44,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 142 transitions. [2024-11-20 14:33:44,843 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 142 transitions. Word has length 38 [2024-11-20 14:33:44,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:44,844 INFO L471 AbstractCegarLoop]: Abstraction has 115 states and 142 transitions. [2024-11-20 14:33:44,844 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.3) internal successors, (23), 11 states have internal predecessors, (23), 4 states have call successors, (5), 2 states have call predecessors, (5), 2 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-11-20 14:33:44,844 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 142 transitions. [2024-11-20 14:33:44,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-11-20 14:33:44,846 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:44,846 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] [2024-11-20 14:33:44,846 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-11-20 14:33:44,846 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)] === [2024-11-20 14:33:44,847 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:44,847 INFO L85 PathProgramCache]: Analyzing trace with hash -1539377740, now seen corresponding path program 1 times [2024-11-20 14:33:44,847 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:44,847 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1590584234] [2024-11-20 14:33:44,847 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:44,847 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:44,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:45,452 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:45,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:45,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:45,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:45,495 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:45,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:45,501 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:45,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:45,506 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:45,507 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1590584234] [2024-11-20 14:33:45,507 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1590584234] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:45,507 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [160779571] [2024-11-20 14:33:45,507 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:45,507 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:45,508 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:45,510 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) [2024-11-20 14:33:45,512 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-20 14:33:45,601 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:45,603 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 60 conjuncts are in the unsatisfiable core [2024-11-20 14:33:45,607 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:45,755 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 [2024-11-20 14:33:45,845 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:45,847 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 19 [2024-11-20 14:33:45,941 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:45,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:45,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 20 [2024-11-20 14:33:45,968 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-20 14:33:45,969 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 [2024-11-20 14:33:45,977 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:45,978 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 [2024-11-20 14:33:45,984 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:45,985 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 20 [2024-11-20 14:33:46,268 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:46,285 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:33:46,286 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 4 case distinctions, treesize of input 30 treesize of output 42 [2024-11-20 14:33:46,514 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:46,515 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:47,074 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:33:47,075 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 385 treesize of output 345 [2024-11-20 14:33:47,165 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:33:47,165 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 97 treesize of output 99 [2024-11-20 14:33:47,188 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:33:47,189 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 81 treesize of output 99 [2024-11-20 14:33:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 27 backedges. 9 proven. 3 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:48,161 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [160779571] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:48,161 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:48,161 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14, 14] total 37 [2024-11-20 14:33:48,162 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1519558243] [2024-11-20 14:33:48,162 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:48,162 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 38 states [2024-11-20 14:33:48,162 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:48,163 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 38 interpolants. [2024-11-20 14:33:48,164 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=117, Invalid=1289, Unknown=0, NotChecked=0, Total=1406 [2024-11-20 14:33:48,164 INFO L87 Difference]: Start difference. First operand 115 states and 142 transitions. Second operand has 38 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 37 states have internal predecessors, (55), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-20 14:33:50,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:50,665 INFO L93 Difference]: Finished difference Result 142 states and 160 transitions. [2024-11-20 14:33:50,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 14:33:50,665 INFO L78 Accepts]: Start accepts. Automaton has has 38 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 37 states have internal predecessors, (55), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) Word has length 37 [2024-11-20 14:33:50,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:50,666 INFO L225 Difference]: With dead ends: 142 [2024-11-20 14:33:50,666 INFO L226 Difference]: Without dead ends: 142 [2024-11-20 14:33:50,669 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 108 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 51 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 530 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=329, Invalid=2427, Unknown=0, NotChecked=0, Total=2756 [2024-11-20 14:33:50,669 INFO L432 NwaCegarLoop]: 44 mSDtfsCounter, 248 mSDsluCounter, 676 mSDsCounter, 0 mSdLazyCounter, 1759 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 251 SdHoareTripleChecker+Valid, 720 SdHoareTripleChecker+Invalid, 1781 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1759 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:50,669 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [251 Valid, 720 Invalid, 1781 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1759 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2024-11-20 14:33:50,670 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2024-11-20 14:33:50,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 99. [2024-11-20 14:33:50,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 64 states have (on average 1.46875) internal successors, (94), 86 states have internal predecessors, (94), 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) [2024-11-20 14:33:50,673 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 112 transitions. [2024-11-20 14:33:50,673 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 112 transitions. Word has length 37 [2024-11-20 14:33:50,673 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:50,674 INFO L471 AbstractCegarLoop]: Abstraction has 99 states and 112 transitions. [2024-11-20 14:33:50,674 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 38 states, 35 states have (on average 1.5714285714285714) internal successors, (55), 37 states have internal predecessors, (55), 4 states have call successors, (10), 1 states have call predecessors, (10), 2 states have return successors, (11), 7 states have call predecessors, (11), 4 states have call successors, (11) [2024-11-20 14:33:50,674 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 112 transitions. [2024-11-20 14:33:50,674 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-11-20 14:33:50,674 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:50,674 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] [2024-11-20 14:33:50,683 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-20 14:33:50,878 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2024-11-20 14:33:50,878 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)] === [2024-11-20 14:33:50,879 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:50,879 INFO L85 PathProgramCache]: Analyzing trace with hash -1874432272, now seen corresponding path program 1 times [2024-11-20 14:33:50,879 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:50,879 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1950900653] [2024-11-20 14:33:50,879 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:50,879 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:50,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:50,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:50,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:50,965 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:50,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:50,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:50,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:50,969 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:50,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:50,971 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:50,972 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1950900653] [2024-11-20 14:33:50,972 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1950900653] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:50,972 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [827872896] [2024-11-20 14:33:50,972 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:50,973 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:50,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:50,975 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) [2024-11-20 14:33:50,977 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-20 14:33:51,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,070 INFO L255 TraceCheckSpWp]: Trace formula consists of 201 conjuncts, 6 conjuncts are in the unsatisfiable core [2024-11-20 14:33:51,072 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:51,092 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:51,093 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:51,138 INFO L134 CoverageAnalysis]: Checked inductivity of 29 backedges. 2 proven. 3 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:51,138 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [827872896] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:51,138 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:51,139 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 7 [2024-11-20 14:33:51,139 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613148753] [2024-11-20 14:33:51,139 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:51,139 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-20 14:33:51,139 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:51,140 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-20 14:33:51,140 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:33:51,140 INFO L87 Difference]: Start difference. First operand 99 states and 112 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) [2024-11-20 14:33:51,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:51,205 INFO L93 Difference]: Finished difference Result 122 states and 146 transitions. [2024-11-20 14:33:51,205 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-11-20 14:33:51,205 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 [2024-11-20 14:33:51,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:51,206 INFO L225 Difference]: With dead ends: 122 [2024-11-20 14:33:51,206 INFO L226 Difference]: Without dead ends: 122 [2024-11-20 14:33:51,206 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 82 SyntacticMatches, 4 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:33:51,207 INFO L432 NwaCegarLoop]: 86 mSDtfsCounter, 8 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 85 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 86 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 85 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:51,207 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 498 Invalid, 86 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 85 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:33:51,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-20 14:33:51,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 112. [2024-11-20 14:33:51,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 77 states have (on average 1.4805194805194806) internal successors, (114), 99 states have internal predecessors, (114), 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) [2024-11-20 14:33:51,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 132 transitions. [2024-11-20 14:33:51,212 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 132 transitions. Word has length 39 [2024-11-20 14:33:51,212 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:51,212 INFO L471 AbstractCegarLoop]: Abstraction has 112 states and 132 transitions. [2024-11-20 14:33:51,212 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) [2024-11-20 14:33:51,212 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 132 transitions. [2024-11-20 14:33:51,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2024-11-20 14:33:51,213 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:51,213 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] [2024-11-20 14:33:51,222 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Ended with exit code 0 [2024-11-20 14:33:51,414 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,SelfDestructingSolverStorable15 [2024-11-20 14:33:51,414 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)] === [2024-11-20 14:33:51,415 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:51,415 INFO L85 PathProgramCache]: Analyzing trace with hash 1633101304, now seen corresponding path program 1 times [2024-11-20 14:33:51,415 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:51,415 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [646950838] [2024-11-20 14:33:51,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:51,415 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:51,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,485 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:51,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,488 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:51,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,490 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:51,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,491 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:51,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,493 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:51,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:51,494 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [646950838] [2024-11-20 14:33:51,494 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [646950838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:51,495 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:51,495 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:33:51,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136910527] [2024-11-20 14:33:51,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:51,495 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:33:51,496 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:51,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:33:51,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:33:51,497 INFO L87 Difference]: Start difference. First operand 112 states and 132 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) [2024-11-20 14:33:51,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:51,531 INFO L93 Difference]: Finished difference Result 166 states and 191 transitions. [2024-11-20 14:33:51,531 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:33:51,531 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 [2024-11-20 14:33:51,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:51,534 INFO L225 Difference]: With dead ends: 166 [2024-11-20 14:33:51,534 INFO L226 Difference]: Without dead ends: 166 [2024-11-20 14:33:51,534 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:33:51,535 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 [2024-11-20 14:33:51,535 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] [2024-11-20 14:33:51,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2024-11-20 14:33:51,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 118. [2024-11-20 14:33:51,539 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 81 states have (on average 1.4567901234567902) internal successors, (118), 104 states have internal predecessors, (118), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 14:33:51,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 138 transitions. [2024-11-20 14:33:51,541 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 138 transitions. Word has length 41 [2024-11-20 14:33:51,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:51,541 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 138 transitions. [2024-11-20 14:33:51,541 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) [2024-11-20 14:33:51,541 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 138 transitions. [2024-11-20 14:33:51,542 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 14:33:51,542 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:51,542 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] [2024-11-20 14:33:51,542 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-11-20 14:33:51,542 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)] === [2024-11-20 14:33:51,543 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:51,543 INFO L85 PathProgramCache]: Analyzing trace with hash 1747480581, now seen corresponding path program 1 times [2024-11-20 14:33:51,543 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:51,543 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [55336431] [2024-11-20 14:33:51,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:51,543 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:51,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,602 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:51,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,604 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:51,605 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,608 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:51,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,610 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:51,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,612 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-20 14:33:51,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,614 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:51,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:51,614 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [55336431] [2024-11-20 14:33:51,614 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [55336431] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:51,615 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:51,616 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:33:51,616 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1995900651] [2024-11-20 14:33:51,617 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:51,617 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:33:51,618 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:51,618 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:33:51,618 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:33:51,618 INFO L87 Difference]: Start difference. First operand 118 states and 138 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) [2024-11-20 14:33:51,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:51,695 INFO L93 Difference]: Finished difference Result 114 states and 134 transitions. [2024-11-20 14:33:51,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:33:51,695 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 [2024-11-20 14:33:51,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:51,697 INFO L225 Difference]: With dead ends: 114 [2024-11-20 14:33:51,697 INFO L226 Difference]: Without dead ends: 114 [2024-11-20 14:33:51,698 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:51,698 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 56 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s 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 [2024-11-20 14:33:51,698 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] [2024-11-20 14:33:51,699 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2024-11-20 14:33:51,701 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2024-11-20 14:33:51,701 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 81 states have (on average 1.4074074074074074) internal successors, (114), 100 states have internal predecessors, (114), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 14:33:51,702 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 134 transitions. [2024-11-20 14:33:51,702 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 134 transitions. Word has length 43 [2024-11-20 14:33:51,702 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:51,702 INFO L471 AbstractCegarLoop]: Abstraction has 114 states and 134 transitions. [2024-11-20 14:33:51,702 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) [2024-11-20 14:33:51,703 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 134 transitions. [2024-11-20 14:33:51,703 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 14:33:51,703 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:51,703 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] [2024-11-20 14:33:51,704 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-11-20 14:33:51,704 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)] === [2024-11-20 14:33:51,704 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:51,704 INFO L85 PathProgramCache]: Analyzing trace with hash 1747480582, now seen corresponding path program 1 times [2024-11-20 14:33:51,704 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:51,705 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1515033111] [2024-11-20 14:33:51,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:51,705 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:51,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:51,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,806 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:51,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,808 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:51,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,810 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-20 14:33:51,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,812 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:51,813 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:51,813 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1515033111] [2024-11-20 14:33:51,813 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1515033111] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:33:51,813 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:33:51,813 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:33:51,813 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [894325589] [2024-11-20 14:33:51,814 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:33:51,815 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:33:51,816 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:51,816 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:33:51,817 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:33:51,817 INFO L87 Difference]: Start difference. First operand 114 states and 134 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) [2024-11-20 14:33:51,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:51,894 INFO L93 Difference]: Finished difference Result 110 states and 130 transitions. [2024-11-20 14:33:51,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:33:51,894 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 [2024-11-20 14:33:51,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:51,895 INFO L225 Difference]: With dead ends: 110 [2024-11-20 14:33:51,895 INFO L226 Difference]: Without dead ends: 110 [2024-11-20 14:33:51,895 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:51,896 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 [2024-11-20 14:33:51,896 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] [2024-11-20 14:33:51,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-20 14:33:51,901 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-20 14:33:51,901 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.3580246913580247) internal successors, (110), 96 states have internal predecessors, (110), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 14:33:51,902 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 130 transitions. [2024-11-20 14:33:51,902 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 130 transitions. Word has length 43 [2024-11-20 14:33:51,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:51,902 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 130 transitions. [2024-11-20 14:33:51,902 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) [2024-11-20 14:33:51,902 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 130 transitions. [2024-11-20 14:33:51,903 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2024-11-20 14:33:51,903 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:51,903 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] [2024-11-20 14:33:51,903 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-11-20 14:33:51,903 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)] === [2024-11-20 14:33:51,903 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:51,903 INFO L85 PathProgramCache]: Analyzing trace with hash -531163462, now seen corresponding path program 1 times [2024-11-20 14:33:51,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:51,903 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1441443286] [2024-11-20 14:33:51,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:51,904 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:51,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,960 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:51,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,962 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:51,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,964 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:51,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,967 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:51,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:51,968 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:51,969 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:51,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1441443286] [2024-11-20 14:33:51,969 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1441443286] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:51,969 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [921433870] [2024-11-20 14:33:51,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:51,969 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:51,970 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:51,972 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) [2024-11-20 14:33:51,974 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-11-20 14:33:52,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:52,087 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 4 conjuncts are in the unsatisfiable core [2024-11-20 14:33:52,089 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:52,111 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:52,111 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:52,149 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:52,150 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [921433870] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:52,150 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:52,150 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 5 [2024-11-20 14:33:52,150 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1735761673] [2024-11-20 14:33:52,150 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:52,151 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-11-20 14:33:52,151 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:52,151 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-11-20 14:33:52,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:33:52,151 INFO L87 Difference]: Start difference. First operand 110 states and 130 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) [2024-11-20 14:33:52,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:52,200 INFO L93 Difference]: Finished difference Result 110 states and 128 transitions. [2024-11-20 14:33:52,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:33:52,200 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 [2024-11-20 14:33:52,201 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:52,202 INFO L225 Difference]: With dead ends: 110 [2024-11-20 14:33:52,202 INFO L226 Difference]: Without dead ends: 110 [2024-11-20 14:33:52,202 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 99 GetRequests, 91 SyntacticMatches, 3 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2024-11-20 14:33:52,203 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 [2024-11-20 14:33:52,204 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] [2024-11-20 14:33:52,204 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2024-11-20 14:33:52,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 110. [2024-11-20 14:33:52,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 96 states have internal predecessors, (108), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 14:33:52,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 128 transitions. [2024-11-20 14:33:52,209 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 128 transitions. Word has length 43 [2024-11-20 14:33:52,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:52,209 INFO L471 AbstractCegarLoop]: Abstraction has 110 states and 128 transitions. [2024-11-20 14:33:52,210 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) [2024-11-20 14:33:52,210 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 128 transitions. [2024-11-20 14:33:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2024-11-20 14:33:52,210 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:52,211 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] [2024-11-20 14:33:52,220 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-11-20 14:33:52,411 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:52,411 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)] === [2024-11-20 14:33:52,412 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:52,412 INFO L85 PathProgramCache]: Analyzing trace with hash 1184442711, now seen corresponding path program 2 times [2024-11-20 14:33:52,412 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:52,412 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [844271265] [2024-11-20 14:33:52,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:52,412 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:52,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:52,571 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:52,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:52,575 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:52,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:52,578 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:52,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:52,583 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:52,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:52,587 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 3 proven. 10 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:33:52,588 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [844271265] [2024-11-20 14:33:52,589 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [844271265] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:52,589 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [578016532] [2024-11-20 14:33:52,589 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:33:52,589 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:52,589 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:52,592 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) [2024-11-20 14:33:52,594 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-11-20 14:33:52,697 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:33:52,698 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:52,699 INFO L255 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 12 conjuncts are in the unsatisfiable core [2024-11-20 14:33:52,701 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:52,905 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-20 14:33:52,906 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:53,082 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 10 treesize of output 8 [2024-11-20 14:33:53,156 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2024-11-20 14:33:53,156 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [578016532] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:53,156 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:53,156 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 26 [2024-11-20 14:33:53,156 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358256933] [2024-11-20 14:33:53,156 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:53,156 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2024-11-20 14:33:53,156 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:53,157 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2024-11-20 14:33:53,157 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=589, Unknown=0, NotChecked=0, Total=702 [2024-11-20 14:33:53,157 INFO L87 Difference]: Start difference. First operand 110 states and 128 transitions. Second operand has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 27 states have internal predecessors, (67), 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) [2024-11-20 14:33:53,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:33:53,777 INFO L93 Difference]: Finished difference Result 132 states and 153 transitions. [2024-11-20 14:33:53,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-20 14:33:53,778 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 27 states have internal predecessors, (67), 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 [2024-11-20 14:33:53,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:33:53,778 INFO L225 Difference]: With dead ends: 132 [2024-11-20 14:33:53,779 INFO L226 Difference]: Without dead ends: 132 [2024-11-20 14:33:53,779 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 120 GetRequests, 77 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 390 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=440, Invalid=1540, Unknown=0, NotChecked=0, Total=1980 [2024-11-20 14:33:53,780 INFO L432 NwaCegarLoop]: 74 mSDtfsCounter, 157 mSDsluCounter, 585 mSDsCounter, 0 mSdLazyCounter, 454 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 162 SdHoareTripleChecker+Valid, 659 SdHoareTripleChecker+Invalid, 476 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 454 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-11-20 14:33:53,780 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [162 Valid, 659 Invalid, 476 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 454 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-11-20 14:33:53,780 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2024-11-20 14:33:53,783 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 98. [2024-11-20 14:33:53,783 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 71 states have (on average 1.267605633802817) internal successors, (90), 84 states have internal predecessors, (90), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 14:33:53,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 110 transitions. [2024-11-20 14:33:53,784 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 110 transitions. Word has length 44 [2024-11-20 14:33:53,784 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:33:53,784 INFO L471 AbstractCegarLoop]: Abstraction has 98 states and 110 transitions. [2024-11-20 14:33:53,784 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 26 states have (on average 2.576923076923077) internal successors, (67), 27 states have internal predecessors, (67), 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) [2024-11-20 14:33:53,784 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 110 transitions. [2024-11-20 14:33:53,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2024-11-20 14:33:53,785 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:33:53,785 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] [2024-11-20 14:33:53,799 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2024-11-20 14:33:53,989 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable20 [2024-11-20 14:33:53,990 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)] === [2024-11-20 14:33:53,990 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:33:53,990 INFO L85 PathProgramCache]: Analyzing trace with hash 1321655688, now seen corresponding path program 2 times [2024-11-20 14:33:53,990 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:33:53,990 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049637284] [2024-11-20 14:33:53,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:33:53,990 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:33:54,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:54,767 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:33:54,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:54,769 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:33:54,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:54,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:33:54,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:54,781 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:33:54,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:33:54,827 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 13 proven. 1 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2024-11-20 14:33:54,827 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:33:54,827 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049637284] [2024-11-20 14:33:54,827 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049637284] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:33:54,828 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1260757143] [2024-11-20 14:33:54,828 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-20 14:33:54,828 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:33:54,828 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:33:54,830 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) [2024-11-20 14:33:54,832 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-11-20 14:33:54,928 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-20 14:33:54,929 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:33:54,930 INFO L255 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 57 conjuncts are in the unsatisfiable core [2024-11-20 14:33:54,933 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:33:55,161 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 [2024-11-20 14:33:55,238 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:55,238 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 23 [2024-11-20 14:33:55,615 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-20 14:33:55,630 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:33:55,630 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 2 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 [2024-11-20 14:33:55,855 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 9 proven. 7 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:55,855 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:33:56,212 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-11-20 14:33:56,213 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 503 treesize of output 435 [2024-11-20 14:33:58,019 INFO L134 CoverageAnalysis]: Checked inductivity of 31 backedges. 10 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2024-11-20 14:33:58,020 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1260757143] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-20 14:33:58,020 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-20 14:33:58,020 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18, 17] total 44 [2024-11-20 14:33:58,020 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906452721] [2024-11-20 14:33:58,020 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-20 14:33:58,020 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-20 14:33:58,020 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:33:58,021 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-20 14:33:58,022 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=1743, Unknown=0, NotChecked=0, Total=1892 [2024-11-20 14:33:58,022 INFO L87 Difference]: Start difference. First operand 98 states and 110 transitions. Second operand has 44 states, 37 states have (on average 1.837837837837838) internal successors, (68), 40 states have internal predecessors, (68), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-20 14:34:04,724 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=false, quantifiers [0] [2024-11-20 14:34:17,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:34:17,466 INFO L93 Difference]: Finished difference Result 163 states and 192 transitions. [2024-11-20 14:34:17,466 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2024-11-20 14:34:17,467 INFO L78 Accepts]: Start accepts. Automaton has has 44 states, 37 states have (on average 1.837837837837838) internal successors, (68), 40 states have internal predecessors, (68), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) Word has length 46 [2024-11-20 14:34:17,467 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:34:17,468 INFO L225 Difference]: With dead ends: 163 [2024-11-20 14:34:17,468 INFO L226 Difference]: Without dead ends: 161 [2024-11-20 14:34:17,469 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 72 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 631 ImplicationChecksByTransitivity, 14.6s TimeCoverageRelationStatistics Valid=409, Invalid=3251, Unknown=0, NotChecked=0, Total=3660 [2024-11-20 14:34:17,469 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 255 mSDsluCounter, 1916 mSDsCounter, 0 mSdLazyCounter, 1321 mSolverCounterSat, 22 mSolverCounterUnsat, 4 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 255 SdHoareTripleChecker+Valid, 1996 SdHoareTripleChecker+Invalid, 1347 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 1321 IncrementalHoareTripleChecker+Invalid, 4 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:34:17,470 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [255 Valid, 1996 Invalid, 1347 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 1321 Invalid, 4 Unknown, 0 Unchecked, 6.2s Time] [2024-11-20 14:34:17,474 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2024-11-20 14:34:17,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 111. [2024-11-20 14:34:17,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.2619047619047619) internal successors, (106), 97 states have internal predecessors, (106), 10 states have call successors, (10), 4 states have call predecessors, (10), 4 states have return successors, (10), 9 states have call predecessors, (10), 10 states have call successors, (10) [2024-11-20 14:34:17,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 126 transitions. [2024-11-20 14:34:17,482 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 126 transitions. Word has length 46 [2024-11-20 14:34:17,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:34:17,482 INFO L471 AbstractCegarLoop]: Abstraction has 111 states and 126 transitions. [2024-11-20 14:34:17,482 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 44 states, 37 states have (on average 1.837837837837838) internal successors, (68), 40 states have internal predecessors, (68), 9 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (10), 9 states have call predecessors, (10), 8 states have call successors, (10) [2024-11-20 14:34:17,483 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 126 transitions. [2024-11-20 14:34:17,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2024-11-20 14:34:17,483 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:34:17,483 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] [2024-11-20 14:34:17,493 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Ended with exit code 0 [2024-11-20 14:34:17,684 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:34:17,684 INFO L396 AbstractCegarLoop]: === Iteration 23 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-20 14:34:17,684 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:34:17,684 INFO L85 PathProgramCache]: Analyzing trace with hash -1072087752, now seen corresponding path program 1 times [2024-11-20 14:34:17,684 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:34:17,685 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1628518797] [2024-11-20 14:34:17,685 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:34:17,685 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:34:17,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:17,798 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:34:17,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:17,800 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:34:17,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:17,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:34:17,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:17,802 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:34:17,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:17,804 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-20 14:34:17,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:17,805 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:34:17,805 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:34:17,806 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1628518797] [2024-11-20 14:34:17,806 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1628518797] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:34:17,806 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:34:17,806 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-11-20 14:34:17,806 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061582296] [2024-11-20 14:34:17,806 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:34:17,806 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-11-20 14:34:17,807 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:34:17,807 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-11-20 14:34:17,807 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-11-20 14:34:17,807 INFO L87 Difference]: Start difference. First operand 111 states and 126 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) [2024-11-20 14:34:17,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:34:17,884 INFO L93 Difference]: Finished difference Result 141 states and 161 transitions. [2024-11-20 14:34:17,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-20 14:34:17,884 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 [2024-11-20 14:34:17,885 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:34:17,886 INFO L225 Difference]: With dead ends: 141 [2024-11-20 14:34:17,886 INFO L226 Difference]: Without dead ends: 141 [2024-11-20 14:34:17,886 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:34:17,887 INFO L432 NwaCegarLoop]: 76 mSDtfsCounter, 25 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 28 SdHoareTripleChecker+Valid, 360 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 [2024-11-20 14:34:17,887 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [28 Valid, 360 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:34:17,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2024-11-20 14:34:17,891 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 119. [2024-11-20 14:34:17,892 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 119 states, 91 states have (on average 1.2417582417582418) internal successors, (113), 104 states have internal predecessors, (113), 11 states have call successors, (11), 4 states have call predecessors, (11), 4 states have return successors, (11), 10 states have call predecessors, (11), 11 states have call successors, (11) [2024-11-20 14:34:17,893 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 119 states to 119 states and 135 transitions. [2024-11-20 14:34:17,893 INFO L78 Accepts]: Start accepts. Automaton has 119 states and 135 transitions. Word has length 49 [2024-11-20 14:34:17,893 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:34:17,893 INFO L471 AbstractCegarLoop]: Abstraction has 119 states and 135 transitions. [2024-11-20 14:34:17,893 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) [2024-11-20 14:34:17,893 INFO L276 IsEmpty]: Start isEmpty. Operand 119 states and 135 transitions. [2024-11-20 14:34:17,894 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2024-11-20 14:34:17,894 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:34:17,894 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] [2024-11-20 14:34:17,894 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2024-11-20 14:34:17,894 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)] === [2024-11-20 14:34:17,895 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:34:17,895 INFO L85 PathProgramCache]: Analyzing trace with hash 1469727509, now seen corresponding path program 1 times [2024-11-20 14:34:17,895 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:34:17,895 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1630753646] [2024-11-20 14:34:17,896 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:34:17,896 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:34:17,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,202 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:34:18,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,204 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:34:18,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,207 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:34:18,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,209 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:34:18,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,210 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-20 14:34:18,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,212 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2024-11-20 14:34:18,213 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:34:18,213 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1630753646] [2024-11-20 14:34:18,213 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1630753646] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:34:18,213 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:34:18,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2024-11-20 14:34:18,215 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978807306] [2024-11-20 14:34:18,215 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:34:18,215 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2024-11-20 14:34:18,216 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:34:18,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2024-11-20 14:34:18,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=108, Unknown=0, NotChecked=0, Total=132 [2024-11-20 14:34:18,216 INFO L87 Difference]: Start difference. First operand 119 states and 135 transitions. Second operand has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 14:34:18,429 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:34:18,429 INFO L93 Difference]: Finished difference Result 145 states and 164 transitions. [2024-11-20 14:34:18,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-11-20 14:34:18,430 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) Word has length 51 [2024-11-20 14:34:18,430 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:34:18,431 INFO L225 Difference]: With dead ends: 145 [2024-11-20 14:34:18,431 INFO L226 Difference]: Without dead ends: 145 [2024-11-20 14:34:18,431 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2024-11-20 14:34:18,432 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 55 mSDsluCounter, 560 mSDsCounter, 0 mSdLazyCounter, 247 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 631 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 247 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-20 14:34:18,432 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 631 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 247 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-20 14:34:18,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2024-11-20 14:34:18,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 126. [2024-11-20 14:34:18,438 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 96 states have (on average 1.2291666666666667) internal successors, (118), 110 states have internal predecessors, (118), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:34:18,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 142 transitions. [2024-11-20 14:34:18,439 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 142 transitions. Word has length 51 [2024-11-20 14:34:18,439 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:34:18,439 INFO L471 AbstractCegarLoop]: Abstraction has 126 states and 142 transitions. [2024-11-20 14:34:18,439 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.1) internal successors, (31), 11 states have internal predecessors, (31), 4 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2024-11-20 14:34:18,439 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 142 transitions. [2024-11-20 14:34:18,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 14:34:18,440 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:34:18,440 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] [2024-11-20 14:34:18,440 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2024-11-20 14:34:18,440 INFO L396 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-20 14:34:18,440 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:34:18,440 INFO L85 PathProgramCache]: Analyzing trace with hash 1761512429, now seen corresponding path program 1 times [2024-11-20 14:34:18,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:34:18,441 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225956873] [2024-11-20 14:34:18,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:34:18,441 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:34:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,505 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:34:18,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,507 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:34:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,509 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:34:18,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,510 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:34:18,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,512 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-20 14:34:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,514 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 14:34:18,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,517 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 14:34:18,519 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:34:18,519 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225956873] [2024-11-20 14:34:18,519 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225956873] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:34:18,519 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:34:18,519 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-20 14:34:18,519 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [105598889] [2024-11-20 14:34:18,520 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:34:18,520 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-20 14:34:18,520 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:34:18,520 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-20 14:34:18,520 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-20 14:34:18,521 INFO L87 Difference]: Start difference. First operand 126 states and 142 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) [2024-11-20 14:34:18,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:34:18,590 INFO L93 Difference]: Finished difference Result 122 states and 138 transitions. [2024-11-20 14:34:18,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-20 14:34:18,590 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 [2024-11-20 14:34:18,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:34:18,591 INFO L225 Difference]: With dead ends: 122 [2024-11-20 14:34:18,591 INFO L226 Difference]: Without dead ends: 122 [2024-11-20 14:34:18,591 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-20 14:34:18,592 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 39 mSDsluCounter, 64 mSDsCounter, 0 mSdLazyCounter, 59 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 128 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 [2024-11-20 14:34:18,592 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 128 Invalid, 63 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 59 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:34:18,592 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2024-11-20 14:34:18,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 122. [2024-11-20 14:34:18,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 96 states have (on average 1.1875) internal successors, (114), 106 states have internal predecessors, (114), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:34:18,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2024-11-20 14:34:18,601 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 54 [2024-11-20 14:34:18,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:34:18,602 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2024-11-20 14:34:18,602 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) [2024-11-20 14:34:18,602 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2024-11-20 14:34:18,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2024-11-20 14:34:18,603 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:34:18,603 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] [2024-11-20 14:34:18,603 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2024-11-20 14:34:18,603 INFO L396 AbstractCegarLoop]: === Iteration 26 === Targeting ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-20 14:34:18,604 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:34:18,604 INFO L85 PathProgramCache]: Analyzing trace with hash 1761512430, now seen corresponding path program 1 times [2024-11-20 14:34:18,604 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:34:18,604 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [85970838] [2024-11-20 14:34:18,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:34:18,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:34:18,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,670 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:34:18,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:34:18,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,673 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:34:18,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,674 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:34:18,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,676 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-20 14:34:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,679 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 14:34:18,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,681 INFO L134 CoverageAnalysis]: Checked inductivity of 28 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 14:34:18,681 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:34:18,682 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [85970838] [2024-11-20 14:34:18,682 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [85970838] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:34:18,682 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:34:18,682 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-20 14:34:18,682 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1922780852] [2024-11-20 14:34:18,682 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:34:18,682 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-20 14:34:18,682 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:34:18,683 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-20 14:34:18,683 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:34:18,683 INFO L87 Difference]: Start difference. First operand 122 states and 138 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) [2024-11-20 14:34:18,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:34:18,727 INFO L93 Difference]: Finished difference Result 118 states and 134 transitions. [2024-11-20 14:34:18,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-20 14:34:18,728 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 [2024-11-20 14:34:18,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:34:18,729 INFO L225 Difference]: With dead ends: 118 [2024-11-20 14:34:18,729 INFO L226 Difference]: Without dead ends: 118 [2024-11-20 14:34:18,729 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-20 14:34:18,730 INFO L432 NwaCegarLoop]: 64 mSDtfsCounter, 20 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 27 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 89 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 27 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-20 14:34:18,731 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 89 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 27 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-20 14:34:18,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2024-11-20 14:34:18,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 118. [2024-11-20 14:34:18,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 96 states have (on average 1.1458333333333333) internal successors, (110), 102 states have internal predecessors, (110), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 10 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:34:18,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2024-11-20 14:34:18,736 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 54 [2024-11-20 14:34:18,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:34:18,737 INFO L471 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2024-11-20 14:34:18,737 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) [2024-11-20 14:34:18,737 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2024-11-20 14:34:18,737 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2024-11-20 14:34:18,737 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:34:18,738 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] [2024-11-20 14:34:18,738 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2024-11-20 14:34:18,738 INFO L396 AbstractCegarLoop]: === Iteration 27 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-20 14:34:18,738 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:34:18,738 INFO L85 PathProgramCache]: Analyzing trace with hash -1652247074, now seen corresponding path program 1 times [2024-11-20 14:34:18,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:34:18,739 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968597399] [2024-11-20 14:34:18,739 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:34:18,739 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:34:18,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,923 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:34:18,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,925 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:34:18,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,926 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:34:18,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,928 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:34:18,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,929 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2024-11-20 14:34:18,930 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,931 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 47 [2024-11-20 14:34:18,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:18,934 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2024-11-20 14:34:18,934 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:34:18,934 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968597399] [2024-11-20 14:34:18,934 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968597399] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-20 14:34:18,934 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-20 14:34:18,934 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-11-20 14:34:18,934 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77463449] [2024-11-20 14:34:18,934 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-20 14:34:18,935 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-11-20 14:34:18,935 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:34:18,935 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-11-20 14:34:18,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-11-20 14:34:18,936 INFO L87 Difference]: Start difference. First operand 118 states and 134 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) [2024-11-20 14:34:19,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-20 14:34:19,034 INFO L93 Difference]: Finished difference Result 134 states and 152 transitions. [2024-11-20 14:34:19,035 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-11-20 14:34:19,035 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 [2024-11-20 14:34:19,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-20 14:34:19,036 INFO L225 Difference]: With dead ends: 134 [2024-11-20 14:34:19,037 INFO L226 Difference]: Without dead ends: 134 [2024-11-20 14:34:19,037 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2024-11-20 14:34:19,037 INFO L432 NwaCegarLoop]: 63 mSDtfsCounter, 17 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 356 SdHoareTripleChecker+Invalid, 113 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-20 14:34:19,038 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 356 Invalid, 113 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-20 14:34:19,038 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2024-11-20 14:34:19,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 122. [2024-11-20 14:34:19,041 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 122 states, 100 states have (on average 1.14) internal successors, (114), 105 states have internal predecessors, (114), 12 states have call successors, (12), 5 states have call predecessors, (12), 5 states have return successors, (12), 11 states have call predecessors, (12), 12 states have call successors, (12) [2024-11-20 14:34:19,041 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 122 states to 122 states and 138 transitions. [2024-11-20 14:34:19,041 INFO L78 Accepts]: Start accepts. Automaton has 122 states and 138 transitions. Word has length 60 [2024-11-20 14:34:19,041 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-20 14:34:19,042 INFO L471 AbstractCegarLoop]: Abstraction has 122 states and 138 transitions. [2024-11-20 14:34:19,042 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) [2024-11-20 14:34:19,042 INFO L276 IsEmpty]: Start isEmpty. Operand 122 states and 138 transitions. [2024-11-20 14:34:19,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2024-11-20 14:34:19,044 INFO L207 NwaCegarLoop]: Found error trace [2024-11-20 14:34:19,044 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] [2024-11-20 14:34:19,044 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2024-11-20 14:34:19,045 INFO L396 AbstractCegarLoop]: === Iteration 28 === Targeting __VERIFIER_assertErr0ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 34 more)] === [2024-11-20 14:34:19,045 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-20 14:34:19,045 INFO L85 PathProgramCache]: Analyzing trace with hash -1022012216, now seen corresponding path program 3 times [2024-11-20 14:34:19,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-20 14:34:19,045 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1124261580] [2024-11-20 14:34:19,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-20 14:34:19,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-20 14:34:19,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:26,719 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-11-20 14:34:26,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:26,723 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2024-11-20 14:34:26,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:26,733 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 14 [2024-11-20 14:34:26,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:26,738 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 19 [2024-11-20 14:34:26,739 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-20 14:34:26,743 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 11 proven. 23 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2024-11-20 14:34:26,743 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-20 14:34:26,743 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1124261580] [2024-11-20 14:34:26,744 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1124261580] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:34:26,744 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2083765780] [2024-11-20 14:34:26,744 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2024-11-20 14:34:26,744 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-20 14:34:26,744 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-20 14:34:26,747 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) [2024-11-20 14:34:26,748 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2024-11-20 14:34:26,886 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 5 check-sat command(s) [2024-11-20 14:34:26,886 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-20 14:34:26,889 INFO L255 TraceCheckSpWp]: Trace formula consists of 256 conjuncts, 74 conjuncts are in the unsatisfiable core [2024-11-20 14:34:26,893 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-20 14:34:26,899 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 [2024-11-20 14:34:27,805 INFO L349 Elim1Store]: treesize reduction 26, result has 25.7 percent of original size [2024-11-20 14:34:27,806 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 30 [2024-11-20 14:34:27,964 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 [2024-11-20 14:34:30,438 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 [2024-11-20 14:34:30,645 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 31 proven. 20 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2024-11-20 14:34:30,646 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-20 14:34:40,623 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [2083765780] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-20 14:34:40,623 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-20 14:34:40,623 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26, 25] total 49 [2024-11-20 14:34:40,623 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1212493046] [2024-11-20 14:34:40,623 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-20 14:34:40,623 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 49 states [2024-11-20 14:34:40,624 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-20 14:34:40,624 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 49 interpolants. [2024-11-20 14:34:40,626 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=427, Invalid=4262, Unknown=3, NotChecked=0, Total=4692 [2024-11-20 14:34:40,626 INFO L87 Difference]: Start difference. First operand 122 states and 138 transitions. Second operand has 49 states, 47 states have (on average 1.5106382978723405) internal successors, (71), 49 states have internal predecessors, (71), 6 states have call successors, (8), 3 states have call predecessors, (8), 3 states have return successors, (7), 5 states have call predecessors, (7), 5 states have call successors, (7)