./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test10.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 61a67961 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/ldv-regression/test10.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 72afb7e2fef67e92af6cd96223794441a1933610ae2e28bcd8b3509d9f7d2eed --- Real Ultimate output --- This is Ultimate 0.2.5-wip.fs.cvc5-61a6796-m [2024-10-14 17:51:42,764 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-14 17:51:42,838 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-14 17:51:42,842 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-14 17:51:42,843 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-14 17:51:42,868 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-14 17:51:42,869 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-14 17:51:42,869 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-14 17:51:42,870 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-14 17:51:42,870 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-14 17:51:42,871 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-14 17:51:42,871 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-14 17:51:42,872 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-14 17:51:42,872 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-14 17:51:42,874 INFO L153 SettingsManager]: * Use SBE=true [2024-10-14 17:51:42,875 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-14 17:51:42,875 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-14 17:51:42,875 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-14 17:51:42,875 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-14 17:51:42,875 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-14 17:51:42,876 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-14 17:51:42,876 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-14 17:51:42,879 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-14 17:51:42,880 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-14 17:51:42,880 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-14 17:51:42,880 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-14 17:51:42,880 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-14 17:51:42,881 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-14 17:51:42,881 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-14 17:51:42,881 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-14 17:51:42,881 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-14 17:51:42,882 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-14 17:51:42,882 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-14 17:51:42,882 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:51:42,882 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-14 17:51:42,882 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-14 17:51:42,882 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-14 17:51:42,883 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-14 17:51:42,883 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-14 17:51:42,883 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-14 17:51:42,883 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-14 17:51:42,884 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-14 17:51:42,885 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 72afb7e2fef67e92af6cd96223794441a1933610ae2e28bcd8b3509d9f7d2eed [2024-10-14 17:51:43,131 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-14 17:51:43,158 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-14 17:51:43,160 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-14 17:51:43,161 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-14 17:51:43,162 INFO L274 PluginConnector]: CDTParser initialized [2024-10-14 17:51:43,163 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test10.c [2024-10-14 17:51:44,547 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-14 17:51:44,755 INFO L384 CDTParser]: Found 1 translation units. [2024-10-14 17:51:44,756 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test10.c [2024-10-14 17:51:44,763 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e0855bc/9abbbfb504e0458a808b1adc4c2668b1/FLAGd7c34a78c [2024-10-14 17:51:44,777 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d7e0855bc/9abbbfb504e0458a808b1adc4c2668b1 [2024-10-14 17:51:44,779 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-14 17:51:44,780 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-14 17:51:44,781 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-14 17:51:44,781 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-14 17:51:44,789 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-14 17:51:44,790 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:51:44" (1/1) ... [2024-10-14 17:51:44,792 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24b13a09 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:44, skipping insertion in model container [2024-10-14 17:51:44,792 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 05:51:44" (1/1) ... [2024-10-14 17:51:44,813 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-14 17:51:44,956 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:51:44,968 INFO L200 MainTranslator]: Completed pre-run [2024-10-14 17:51:44,984 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-14 17:51:45,009 INFO L204 MainTranslator]: Completed translation [2024-10-14 17:51:45,009 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45 WrapperNode [2024-10-14 17:51:45,009 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-14 17:51:45,010 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-14 17:51:45,010 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-14 17:51:45,011 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-14 17:51:45,024 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,032 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,053 INFO L138 Inliner]: procedures = 16, calls = 34, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 80 [2024-10-14 17:51:45,053 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-14 17:51:45,054 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-14 17:51:45,054 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-14 17:51:45,054 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-14 17:51:45,064 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,064 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,071 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,098 INFO L175 MemorySlicer]: Split 23 memory accesses to 3 slices as follows [2, 13, 8]. 57 percent of accesses are in the largest equivalence class. The 6 initializations are split as follows [2, 2, 2]. The 11 writes are split as follows [0, 8, 3]. [2024-10-14 17:51:45,099 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,099 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,108 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,114 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,115 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,116 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,118 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-14 17:51:45,119 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-14 17:51:45,119 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-14 17:51:45,119 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-14 17:51:45,120 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (1/1) ... [2024-10-14 17:51:45,126 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-14 17:51:45,140 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-10-14 17:51:45,157 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) [2024-10-14 17:51:45,159 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 [2024-10-14 17:51:45,207 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-14 17:51:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-14 17:51:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-14 17:51:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-14 17:51:45,208 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-14 17:51:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-14 17:51:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-14 17:51:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-14 17:51:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-14 17:51:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-14 17:51:45,209 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-14 17:51:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-14 17:51:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-14 17:51:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#0 [2024-10-14 17:51:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#1 [2024-10-14 17:51:45,211 INFO L130 BoogieDeclarations]: Found specification of procedure write~int#2 [2024-10-14 17:51:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-14 17:51:45,212 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-14 17:51:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#0 [2024-10-14 17:51:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#1 [2024-10-14 17:51:45,212 INFO L130 BoogieDeclarations]: Found specification of procedure read~int#2 [2024-10-14 17:51:45,315 INFO L238 CfgBuilder]: Building ICFG [2024-10-14 17:51:45,317 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-14 17:51:45,572 INFO L? ?]: Removed 24 outVars from TransFormulas that were not future-live. [2024-10-14 17:51:45,572 INFO L287 CfgBuilder]: Performing block encoding [2024-10-14 17:51:45,637 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-14 17:51:45,638 INFO L314 CfgBuilder]: Removed 0 assume(true) statements. [2024-10-14 17:51:45,639 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:51:45 BoogieIcfgContainer [2024-10-14 17:51:45,639 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-14 17:51:45,642 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-14 17:51:45,642 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-14 17:51:45,647 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-14 17:51:45,647 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 05:51:44" (1/3) ... [2024-10-14 17:51:45,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630f3b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:51:45, skipping insertion in model container [2024-10-14 17:51:45,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 05:51:45" (2/3) ... [2024-10-14 17:51:45,648 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@630f3b1c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 05:51:45, skipping insertion in model container [2024-10-14 17:51:45,648 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:51:45" (3/3) ... [2024-10-14 17:51:45,649 INFO L112 eAbstractionObserver]: Analyzing ICFG test10.c [2024-10-14 17:51:45,666 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-14 17:51:45,666 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 36 error locations. [2024-10-14 17:51:45,707 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-14 17:51:45,712 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;@23f0d39d, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-14 17:51:45,713 INFO L334 AbstractCegarLoop]: Starting to check reachability of 36 error locations. [2024-10-14 17:51:45,718 INFO L276 IsEmpty]: Start isEmpty. Operand has 59 states, 22 states have (on average 2.727272727272727) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:45,723 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-14 17:51:45,723 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:45,724 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-14 17:51:45,724 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:45,730 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:45,730 INFO L85 PathProgramCache]: Analyzing trace with hash 3755, now seen corresponding path program 1 times [2024-10-14 17:51:45,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:45,741 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2086648547] [2024-10-14 17:51:45,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:45,742 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:45,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:46,079 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:46,079 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:46,079 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2086648547] [2024-10-14 17:51:46,080 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2086648547] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:46,080 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:46,080 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:46,082 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1853170015] [2024-10-14 17:51:46,083 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:46,086 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:46,087 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:46,124 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:46,125 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,127 INFO L87 Difference]: Start difference. First operand has 59 states, 22 states have (on average 2.727272727272727) internal successors, (60), 58 states have internal predecessors, (60), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,227 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:46,229 INFO L93 Difference]: Finished difference Result 57 states and 57 transitions. [2024-10-14 17:51:46,231 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:46,232 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-14 17:51:46,232 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:46,239 INFO L225 Difference]: With dead ends: 57 [2024-10-14 17:51:46,240 INFO L226 Difference]: Without dead ends: 56 [2024-10-14 17:51:46,241 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,247 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 56 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:46,249 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 19 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:46,266 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2024-10-14 17:51:46,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2024-10-14 17:51:46,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 22 states have (on average 2.5454545454545454) internal successors, (56), 55 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 56 transitions. [2024-10-14 17:51:46,285 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 56 transitions. Word has length 2 [2024-10-14 17:51:46,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:46,286 INFO L471 AbstractCegarLoop]: Abstraction has 56 states and 56 transitions. [2024-10-14 17:51:46,286 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,286 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 56 transitions. [2024-10-14 17:51:46,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 3 [2024-10-14 17:51:46,287 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:46,287 INFO L215 NwaCegarLoop]: trace histogram [1, 1] [2024-10-14 17:51:46,287 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-14 17:51:46,288 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:46,288 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:46,288 INFO L85 PathProgramCache]: Analyzing trace with hash 3756, now seen corresponding path program 1 times [2024-10-14 17:51:46,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:46,289 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [477163835] [2024-10-14 17:51:46,289 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:46,289 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:46,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:46,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:46,397 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:46,397 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [477163835] [2024-10-14 17:51:46,397 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [477163835] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:46,397 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:46,397 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:46,398 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348741886] [2024-10-14 17:51:46,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:46,399 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:46,399 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:46,399 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:46,400 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,400 INFO L87 Difference]: Start difference. First operand 56 states and 56 transitions. Second operand has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,462 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:46,463 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2024-10-14 17:51:46,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:46,464 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 2 [2024-10-14 17:51:46,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:46,464 INFO L225 Difference]: With dead ends: 54 [2024-10-14 17:51:46,464 INFO L226 Difference]: Without dead ends: 54 [2024-10-14 17:51:46,465 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,466 INFO L432 NwaCegarLoop]: 20 mSDtfsCounter, 53 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:46,466 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 20 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:46,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2024-10-14 17:51:46,470 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2024-10-14 17:51:46,470 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 22 states have (on average 2.4545454545454546) internal successors, (54), 53 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,471 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2024-10-14 17:51:46,471 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 2 [2024-10-14 17:51:46,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:46,471 INFO L471 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2024-10-14 17:51:46,471 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.0) internal successors, (2), 2 states have internal predecessors, (2), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,472 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2024-10-14 17:51:46,472 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-14 17:51:46,472 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:46,472 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-14 17:51:46,472 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-14 17:51:46,472 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:46,473 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:46,473 INFO L85 PathProgramCache]: Analyzing trace with hash 116381, now seen corresponding path program 1 times [2024-10-14 17:51:46,473 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:46,473 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [698936393] [2024-10-14 17:51:46,473 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:46,473 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:46,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:46,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:46,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:46,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [698936393] [2024-10-14 17:51:46,561 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [698936393] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:46,561 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:46,562 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:46,562 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1571159480] [2024-10-14 17:51:46,562 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:46,562 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:46,562 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:46,564 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:46,564 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,564 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:46,627 INFO L93 Difference]: Finished difference Result 53 states and 53 transitions. [2024-10-14 17:51:46,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:46,627 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-14 17:51:46,627 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:46,628 INFO L225 Difference]: With dead ends: 53 [2024-10-14 17:51:46,628 INFO L226 Difference]: Without dead ends: 53 [2024-10-14 17:51:46,628 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,629 INFO L432 NwaCegarLoop]: 18 mSDtfsCounter, 51 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 51 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:46,630 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [51 Valid, 18 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:46,630 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2024-10-14 17:51:46,637 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2024-10-14 17:51:46,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 22 states have (on average 2.409090909090909) internal successors, (53), 52 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2024-10-14 17:51:46,640 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 3 [2024-10-14 17:51:46,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:46,640 INFO L471 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2024-10-14 17:51:46,640 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,640 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2024-10-14 17:51:46,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-14 17:51:46,641 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:46,641 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-14 17:51:46,641 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2024-10-14 17:51:46,641 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:46,642 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:46,642 INFO L85 PathProgramCache]: Analyzing trace with hash 116382, now seen corresponding path program 1 times [2024-10-14 17:51:46,642 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:46,643 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [487615433] [2024-10-14 17:51:46,643 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:46,644 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:46,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:46,729 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:46,729 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:46,729 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [487615433] [2024-10-14 17:51:46,730 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [487615433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:46,730 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:46,730 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:46,730 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [857538046] [2024-10-14 17:51:46,730 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:46,730 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:46,730 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:46,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:46,731 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,731 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:46,783 INFO L93 Difference]: Finished difference Result 52 states and 52 transitions. [2024-10-14 17:51:46,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:46,784 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2024-10-14 17:51:46,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:46,785 INFO L225 Difference]: With dead ends: 52 [2024-10-14 17:51:46,785 INFO L226 Difference]: Without dead ends: 52 [2024-10-14 17:51:46,785 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,786 INFO L432 NwaCegarLoop]: 19 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 19 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 [2024-10-14 17:51:46,787 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 19 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:46,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2024-10-14 17:51:46,793 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2024-10-14 17:51:46,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 22 states have (on average 2.3636363636363638) internal successors, (52), 51 states have internal predecessors, (52), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,794 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2024-10-14 17:51:46,794 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 3 [2024-10-14 17:51:46,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:46,795 INFO L471 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2024-10-14 17:51:46,795 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 2 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,795 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2024-10-14 17:51:46,795 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 17:51:46,795 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:46,795 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 17:51:46,796 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-14 17:51:46,796 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:46,796 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:46,797 INFO L85 PathProgramCache]: Analyzing trace with hash 3610302, now seen corresponding path program 1 times [2024-10-14 17:51:46,797 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:46,797 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [453262833] [2024-10-14 17:51:46,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:46,797 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:46,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:46,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:46,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:46,868 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [453262833] [2024-10-14 17:51:46,868 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [453262833] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:46,868 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:46,868 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:46,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1233506515] [2024-10-14 17:51:46,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:46,869 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:46,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:46,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:46,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,870 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:46,918 INFO L93 Difference]: Finished difference Result 49 states and 49 transitions. [2024-10-14 17:51:46,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:46,919 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-14 17:51:46,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:46,919 INFO L225 Difference]: With dead ends: 49 [2024-10-14 17:51:46,919 INFO L226 Difference]: Without dead ends: 49 [2024-10-14 17:51:46,920 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:46,922 INFO L432 NwaCegarLoop]: 15 mSDtfsCounter, 46 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 34 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 34 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:46,922 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 15 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 34 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:46,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2024-10-14 17:51:46,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2024-10-14 17:51:46,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 22 states have (on average 2.227272727272727) internal successors, (49), 48 states have internal predecessors, (49), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2024-10-14 17:51:46,926 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 4 [2024-10-14 17:51:46,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:46,926 INFO L471 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2024-10-14 17:51:46,926 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:46,926 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2024-10-14 17:51:46,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-10-14 17:51:46,926 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:46,926 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-10-14 17:51:46,927 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2024-10-14 17:51:46,927 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:46,927 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:46,927 INFO L85 PathProgramCache]: Analyzing trace with hash 3610303, now seen corresponding path program 1 times [2024-10-14 17:51:46,927 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:46,928 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [862064870] [2024-10-14 17:51:46,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:46,928 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:46,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:47,026 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:47,027 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:47,027 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [862064870] [2024-10-14 17:51:47,027 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [862064870] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:47,027 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:47,028 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:47,028 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386841714] [2024-10-14 17:51:47,028 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:47,029 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:47,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:47,029 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:47,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,030 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:47,074 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2024-10-14 17:51:47,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:47,075 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-10-14 17:51:47,075 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:47,076 INFO L225 Difference]: With dead ends: 46 [2024-10-14 17:51:47,076 INFO L226 Difference]: Without dead ends: 46 [2024-10-14 17:51:47,076 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,077 INFO L432 NwaCegarLoop]: 16 mSDtfsCounter, 43 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:47,077 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 16 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:47,078 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2024-10-14 17:51:47,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2024-10-14 17:51:47,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 22 states have (on average 2.090909090909091) internal successors, (46), 45 states have internal predecessors, (46), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2024-10-14 17:51:47,081 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 4 [2024-10-14 17:51:47,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:47,082 INFO L471 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2024-10-14 17:51:47,082 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,082 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2024-10-14 17:51:47,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 17:51:47,082 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:47,083 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 17:51:47,083 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2024-10-14 17:51:47,083 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:47,083 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:47,084 INFO L85 PathProgramCache]: Analyzing trace with hash 111919345, now seen corresponding path program 1 times [2024-10-14 17:51:47,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:47,084 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1617116188] [2024-10-14 17:51:47,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:47,084 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:47,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:47,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:47,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:47,141 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1617116188] [2024-10-14 17:51:47,141 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1617116188] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:47,141 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:47,141 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:47,142 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [18073764] [2024-10-14 17:51:47,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:47,142 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:47,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:47,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:47,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,143 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:47,192 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2024-10-14 17:51:47,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:47,193 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-14 17:51:47,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:47,193 INFO L225 Difference]: With dead ends: 40 [2024-10-14 17:51:47,193 INFO L226 Difference]: Without dead ends: 40 [2024-10-14 17:51:47,194 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,195 INFO L432 NwaCegarLoop]: 9 mSDtfsCounter, 36 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 36 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:47,195 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 9 Invalid, 36 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:47,196 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2024-10-14 17:51:47,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2024-10-14 17:51:47,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2024-10-14 17:51:47,198 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 5 [2024-10-14 17:51:47,198 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:47,199 INFO L471 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2024-10-14 17:51:47,199 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,199 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2024-10-14 17:51:47,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-14 17:51:47,199 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:47,200 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-14 17:51:47,200 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-14 17:51:47,200 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:47,200 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:47,201 INFO L85 PathProgramCache]: Analyzing trace with hash 111919346, now seen corresponding path program 1 times [2024-10-14 17:51:47,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:47,201 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [426765464] [2024-10-14 17:51:47,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:47,201 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:47,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:47,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:47,289 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:47,289 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [426765464] [2024-10-14 17:51:47,289 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [426765464] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:47,290 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:47,290 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:47,290 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028655301] [2024-10-14 17:51:47,290 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:47,290 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:47,290 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:47,291 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:47,291 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,291 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:47,342 INFO L93 Difference]: Finished difference Result 34 states and 34 transitions. [2024-10-14 17:51:47,343 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:47,343 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-14 17:51:47,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:47,344 INFO L225 Difference]: With dead ends: 34 [2024-10-14 17:51:47,344 INFO L226 Difference]: Without dead ends: 34 [2024-10-14 17:51:47,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,345 INFO L432 NwaCegarLoop]: 10 mSDtfsCounter, 30 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 10 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:47,345 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 10 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:47,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2024-10-14 17:51:47,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2024-10-14 17:51:47,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 22 states have (on average 1.5454545454545454) internal successors, (34), 33 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 34 transitions. [2024-10-14 17:51:47,351 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 34 transitions. Word has length 5 [2024-10-14 17:51:47,352 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:47,352 INFO L471 AbstractCegarLoop]: Abstraction has 34 states and 34 transitions. [2024-10-14 17:51:47,352 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,354 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 34 transitions. [2024-10-14 17:51:47,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 17:51:47,354 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:47,354 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:47,354 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2024-10-14 17:51:47,354 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:47,355 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:47,355 INFO L85 PathProgramCache]: Analyzing trace with hash 1294639784, now seen corresponding path program 1 times [2024-10-14 17:51:47,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:47,355 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1826693432] [2024-10-14 17:51:47,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:47,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:47,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:47,404 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:47,404 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:47,405 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1826693432] [2024-10-14 17:51:47,405 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1826693432] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:47,405 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:47,405 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:51:47,405 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1431453226] [2024-10-14 17:51:47,405 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:47,406 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:47,406 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:47,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:47,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,407 INFO L87 Difference]: Start difference. First operand 34 states and 34 transitions. Second operand has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:47,441 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2024-10-14 17:51:47,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:47,442 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 17:51:47,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:47,442 INFO L225 Difference]: With dead ends: 32 [2024-10-14 17:51:47,442 INFO L226 Difference]: Without dead ends: 32 [2024-10-14 17:51:47,442 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:47,443 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 24 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 28 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:47,443 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 8 Invalid, 28 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:47,444 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2024-10-14 17:51:47,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2024-10-14 17:51:47,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 32 states, 22 states have (on average 1.4545454545454546) internal successors, (32), 31 states have internal predecessors, (32), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 32 transitions. [2024-10-14 17:51:47,445 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 32 transitions. Word has length 8 [2024-10-14 17:51:47,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:47,446 INFO L471 AbstractCegarLoop]: Abstraction has 32 states and 32 transitions. [2024-10-14 17:51:47,446 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 4.0) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,446 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 32 transitions. [2024-10-14 17:51:47,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2024-10-14 17:51:47,446 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:47,446 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:47,447 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2024-10-14 17:51:47,447 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:47,447 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:47,447 INFO L85 PathProgramCache]: Analyzing trace with hash 1294639785, now seen corresponding path program 1 times [2024-10-14 17:51:47,447 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:47,448 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [4393813] [2024-10-14 17:51:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:47,448 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:47,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:47,560 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:47,560 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:47,560 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [4393813] [2024-10-14 17:51:47,560 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [4393813] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:47,560 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:47,560 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:51:47,561 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262199282] [2024-10-14 17:51:47,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:47,561 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:51:47,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:47,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:51:47,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:51:47,562 INFO L87 Difference]: Start difference. First operand 32 states and 32 transitions. Second operand has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:47,620 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2024-10-14 17:51:47,621 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:51:47,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2024-10-14 17:51:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:47,621 INFO L225 Difference]: With dead ends: 31 [2024-10-14 17:51:47,621 INFO L226 Difference]: Without dead ends: 31 [2024-10-14 17:51:47,621 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:51:47,622 INFO L432 NwaCegarLoop]: 8 mSDtfsCounter, 32 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 39 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 39 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:47,622 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 15 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 39 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:47,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2024-10-14 17:51:47,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2024-10-14 17:51:47,624 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 31 states, 22 states have (on average 1.4090909090909092) internal successors, (31), 30 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,624 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 31 transitions. [2024-10-14 17:51:47,625 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 31 transitions. Word has length 8 [2024-10-14 17:51:47,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:47,625 INFO L471 AbstractCegarLoop]: Abstraction has 31 states and 31 transitions. [2024-10-14 17:51:47,625 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.6666666666666665) internal successors, (8), 3 states have internal predecessors, (8), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,625 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 31 transitions. [2024-10-14 17:51:47,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 17:51:47,626 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:47,626 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:47,626 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-14 17:51:47,626 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:47,626 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:47,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1479127637, now seen corresponding path program 1 times [2024-10-14 17:51:47,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:47,627 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1992581333] [2024-10-14 17:51:47,627 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:47,627 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:47,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:47,692 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:47,692 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:47,692 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1992581333] [2024-10-14 17:51:47,692 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1992581333] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:47,692 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:47,692 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:51:47,693 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [946560084] [2024-10-14 17:51:47,693 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:47,693 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:51:47,693 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:47,693 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:51:47,694 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:51:47,694 INFO L87 Difference]: Start difference. First operand 31 states and 31 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,736 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:47,736 INFO L93 Difference]: Finished difference Result 30 states and 30 transitions. [2024-10-14 17:51:47,737 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:51:47,737 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 17:51:47,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:47,737 INFO L225 Difference]: With dead ends: 30 [2024-10-14 17:51:47,738 INFO L226 Difference]: Without dead ends: 30 [2024-10-14 17:51:47,738 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:51:47,739 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 50 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 25 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 25 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:47,740 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 7 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 25 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:47,740 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-14 17:51:47,741 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2024-10-14 17:51:47,742 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 22 states have (on average 1.3636363636363635) internal successors, (30), 29 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,742 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 30 transitions. [2024-10-14 17:51:47,742 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 30 transitions. Word has length 9 [2024-10-14 17:51:47,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:47,743 INFO L471 AbstractCegarLoop]: Abstraction has 30 states and 30 transitions. [2024-10-14 17:51:47,743 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), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,743 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 30 transitions. [2024-10-14 17:51:47,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2024-10-14 17:51:47,743 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:47,743 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:47,743 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2024-10-14 17:51:47,744 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:47,745 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:47,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1479127638, now seen corresponding path program 1 times [2024-10-14 17:51:47,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:47,746 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [578838826] [2024-10-14 17:51:47,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:47,746 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:47,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:47,864 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:47,864 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:47,864 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [578838826] [2024-10-14 17:51:47,864 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [578838826] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:47,864 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:47,864 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-14 17:51:47,865 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353998440] [2024-10-14 17:51:47,865 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:47,865 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-14 17:51:47,865 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:47,865 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-14 17:51:47,865 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-14 17:51:47,866 INFO L87 Difference]: Start difference. First operand 30 states and 30 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:47,917 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2024-10-14 17:51:47,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-14 17:51:47,918 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2024-10-14 17:51:47,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:47,919 INFO L225 Difference]: With dead ends: 29 [2024-10-14 17:51:47,919 INFO L226 Difference]: Without dead ends: 29 [2024-10-14 17:51:47,919 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:51:47,920 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 48 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 24 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 24 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 24 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:47,920 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 7 Invalid, 24 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 24 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:47,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-14 17:51:47,922 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2024-10-14 17:51:47,922 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 22 states have (on average 1.3181818181818181) internal successors, (29), 28 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 29 transitions. [2024-10-14 17:51:47,924 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 29 transitions. Word has length 9 [2024-10-14 17:51:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:47,925 INFO L471 AbstractCegarLoop]: Abstraction has 29 states and 29 transitions. [2024-10-14 17:51:47,925 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 3 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:47,925 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 29 transitions. [2024-10-14 17:51:47,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2024-10-14 17:51:47,925 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:47,925 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:47,925 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-14 17:51:47,925 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:47,926 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:47,926 INFO L85 PathProgramCache]: Analyzing trace with hash -261301852, now seen corresponding path program 1 times [2024-10-14 17:51:47,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:47,926 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [441459498] [2024-10-14 17:51:47,926 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:47,926 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:47,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:48,088 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:48,089 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:48,089 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [441459498] [2024-10-14 17:51:48,089 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [441459498] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:48,089 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:48,089 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:51:48,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [973356650] [2024-10-14 17:51:48,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:48,089 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2024-10-14 17:51:48,090 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:48,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2024-10-14 17:51:48,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2024-10-14 17:51:48,090 INFO L87 Difference]: Start difference. First operand 29 states and 29 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:48,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:48,152 INFO L93 Difference]: Finished difference Result 28 states and 28 transitions. [2024-10-14 17:51:48,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2024-10-14 17:51:48,152 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2024-10-14 17:51:48,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:48,153 INFO L225 Difference]: With dead ends: 28 [2024-10-14 17:51:48,153 INFO L226 Difference]: Without dead ends: 28 [2024-10-14 17:51:48,153 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2024-10-14 17:51:48,153 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 62 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 62 SdHoareTripleChecker+Valid, 7 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:48,154 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [62 Valid, 7 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:48,154 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2024-10-14 17:51:48,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2024-10-14 17:51:48,157 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.2727272727272727) internal successors, (28), 27 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:48,157 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2024-10-14 17:51:48,157 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 13 [2024-10-14 17:51:48,158 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:48,158 INFO L471 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2024-10-14 17:51:48,158 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:48,158 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2024-10-14 17:51:48,158 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 17:51:48,158 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:48,159 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:48,159 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2024-10-14 17:51:48,159 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:48,159 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:48,159 INFO L85 PathProgramCache]: Analyzing trace with hash -668465380, now seen corresponding path program 1 times [2024-10-14 17:51:48,159 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:48,159 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291832801] [2024-10-14 17:51:48,159 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:48,160 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:48,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:48,500 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:48,500 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:48,500 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291832801] [2024-10-14 17:51:48,500 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291832801] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:48,500 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:48,500 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 17:51:48,501 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [422324533] [2024-10-14 17:51:48,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:48,501 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 17:51:48,501 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:48,501 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 17:51:48,501 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2024-10-14 17:51:48,502 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:48,621 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:48,621 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2024-10-14 17:51:48,622 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:51:48,622 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-14 17:51:48,622 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:48,622 INFO L225 Difference]: With dead ends: 27 [2024-10-14 17:51:48,622 INFO L226 Difference]: Without dead ends: 27 [2024-10-14 17:51:48,623 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:51:48,623 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 44 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 15 SdHoareTripleChecker+Invalid, 78 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:48,623 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [44 Valid, 15 Invalid, 78 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 77 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:48,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2024-10-14 17:51:48,624 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2024-10-14 17:51:48,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.2272727272727273) internal successors, (27), 26 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:48,625 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2024-10-14 17:51:48,625 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 17 [2024-10-14 17:51:48,625 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:48,626 INFO L471 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2024-10-14 17:51:48,626 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.4285714285714284) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:48,626 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2024-10-14 17:51:48,626 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2024-10-14 17:51:48,626 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:48,627 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:48,627 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2024-10-14 17:51:48,627 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:48,627 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:48,627 INFO L85 PathProgramCache]: Analyzing trace with hash -668465379, now seen corresponding path program 1 times [2024-10-14 17:51:48,627 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:48,628 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1845432509] [2024-10-14 17:51:48,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:48,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:48,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:49,210 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:49,210 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:49,210 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1845432509] [2024-10-14 17:51:49,210 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1845432509] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:49,210 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:49,210 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 17:51:49,211 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2027245089] [2024-10-14 17:51:49,211 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:49,211 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2024-10-14 17:51:49,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:49,211 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2024-10-14 17:51:49,212 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:51:49,212 INFO L87 Difference]: Start difference. First operand 27 states and 27 transitions. Second operand has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:49,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:49,348 INFO L93 Difference]: Finished difference Result 26 states and 26 transitions. [2024-10-14 17:51:49,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 17:51:49,349 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 17 [2024-10-14 17:51:49,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:49,349 INFO L225 Difference]: With dead ends: 26 [2024-10-14 17:51:49,349 INFO L226 Difference]: Without dead ends: 26 [2024-10-14 17:51:49,350 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2024-10-14 17:51:49,350 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 30 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 80 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:49,350 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 18 Invalid, 80 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 79 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:49,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2024-10-14 17:51:49,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2024-10-14 17:51:49,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 22 states have (on average 1.1818181818181819) internal successors, (26), 25 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:49,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2024-10-14 17:51:49,352 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 17 [2024-10-14 17:51:49,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:49,354 INFO L471 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2024-10-14 17:51:49,354 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:49,354 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2024-10-14 17:51:49,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 17:51:49,355 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:49,355 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:49,355 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-14 17:51:49,356 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:49,356 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:49,356 INFO L85 PathProgramCache]: Analyzing trace with hash 1849903749, now seen corresponding path program 1 times [2024-10-14 17:51:49,356 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:49,356 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1133355563] [2024-10-14 17:51:49,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:49,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:49,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:49,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:49,596 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:49,596 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1133355563] [2024-10-14 17:51:49,597 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1133355563] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:49,598 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:49,598 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 17:51:49,598 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1281282819] [2024-10-14 17:51:49,598 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:49,598 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:51:49,599 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:49,599 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:51:49,599 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-14 17:51:49,599 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:49,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:49,674 INFO L93 Difference]: Finished difference Result 30 states and 29 transitions. [2024-10-14 17:51:49,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-14 17:51:49,675 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-14 17:51:49,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:49,675 INFO L225 Difference]: With dead ends: 30 [2024-10-14 17:51:49,675 INFO L226 Difference]: Without dead ends: 30 [2024-10-14 17:51:49,675 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-10-14 17:51:49,676 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 45 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 75 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 45 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 75 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:49,676 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [45 Valid, 13 Invalid, 75 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:49,677 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2024-10-14 17:51:49,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 25. [2024-10-14 17:51:49,679 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:49,679 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2024-10-14 17:51:49,679 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 19 [2024-10-14 17:51:49,679 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:49,679 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2024-10-14 17:51:49,680 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.1666666666666665) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:49,680 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2024-10-14 17:51:49,680 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2024-10-14 17:51:49,681 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:49,681 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:49,682 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2024-10-14 17:51:49,682 INFO L396 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:49,682 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:49,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1849903750, now seen corresponding path program 1 times [2024-10-14 17:51:49,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:49,682 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [292829294] [2024-10-14 17:51:49,683 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:49,683 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:49,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:50,125 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:50,125 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:50,125 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [292829294] [2024-10-14 17:51:50,126 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [292829294] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:50,126 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:50,126 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-14 17:51:50,126 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760986330] [2024-10-14 17:51:50,126 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:50,126 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 17:51:50,126 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:50,126 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 17:51:50,127 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2024-10-14 17:51:50,127 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:50,219 INFO L93 Difference]: Finished difference Result 29 states and 28 transitions. [2024-10-14 17:51:50,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:51:50,219 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2024-10-14 17:51:50,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:50,220 INFO L225 Difference]: With dead ends: 29 [2024-10-14 17:51:50,220 INFO L226 Difference]: Without dead ends: 29 [2024-10-14 17:51:50,220 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2024-10-14 17:51:50,221 INFO L432 NwaCegarLoop]: 6 mSDtfsCounter, 43 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 17 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:50,221 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 17 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:50,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2024-10-14 17:51:50,222 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 24. [2024-10-14 17:51:50,223 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2024-10-14 17:51:50,223 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 19 [2024-10-14 17:51:50,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:50,223 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2024-10-14 17:51:50,224 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,224 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2024-10-14 17:51:50,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 17:51:50,224 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:50,224 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:50,224 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2024-10-14 17:51:50,225 INFO L396 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:50,225 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:50,225 INFO L85 PathProgramCache]: Analyzing trace with hash 1512439779, now seen corresponding path program 1 times [2024-10-14 17:51:50,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:50,226 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1932054944] [2024-10-14 17:51:50,226 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:50,226 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:50,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:50,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:50,278 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:50,278 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1932054944] [2024-10-14 17:51:50,278 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1932054944] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:50,278 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:50,278 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-14 17:51:50,278 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895407012] [2024-10-14 17:51:50,279 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:50,279 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:50,279 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:50,279 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:50,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:50,279 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,311 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:50,311 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2024-10-14 17:51:50,311 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:50,312 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-14 17:51:50,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:50,312 INFO L225 Difference]: With dead ends: 25 [2024-10-14 17:51:50,312 INFO L226 Difference]: Without dead ends: 25 [2024-10-14 17:51:50,312 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:50,313 INFO L432 NwaCegarLoop]: 14 mSDtfsCounter, 0 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:50,313 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 25 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:50,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2024-10-14 17:51:50,314 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2024-10-14 17:51:50,315 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.0869565217391304) internal successors, (25), 24 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,315 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2024-10-14 17:51:50,315 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 20 [2024-10-14 17:51:50,315 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:50,315 INFO L471 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2024-10-14 17:51:50,315 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.666666666666667) internal successors, (20), 3 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,315 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2024-10-14 17:51:50,315 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2024-10-14 17:51:50,316 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:50,316 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:50,316 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2024-10-14 17:51:50,316 INFO L396 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:50,316 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:50,316 INFO L85 PathProgramCache]: Analyzing trace with hash 1512440425, now seen corresponding path program 1 times [2024-10-14 17:51:50,316 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:50,316 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1554688401] [2024-10-14 17:51:50,316 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:50,317 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:50,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:50,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:50,695 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:50,695 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1554688401] [2024-10-14 17:51:50,695 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1554688401] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:50,696 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:50,696 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2024-10-14 17:51:50,696 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [989340019] [2024-10-14 17:51:50,696 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:50,696 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-14 17:51:50,696 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:50,696 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-14 17:51:50,697 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2024-10-14 17:51:50,697 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:50,850 INFO L93 Difference]: Finished difference Result 24 states and 23 transitions. [2024-10-14 17:51:50,850 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-14 17:51:50,850 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2024-10-14 17:51:50,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:50,851 INFO L225 Difference]: With dead ends: 24 [2024-10-14 17:51:50,851 INFO L226 Difference]: Without dead ends: 24 [2024-10-14 17:51:50,851 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2024-10-14 17:51:50,852 INFO L432 NwaCegarLoop]: 7 mSDtfsCounter, 32 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 32 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 91 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:50,852 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [32 Valid, 23 Invalid, 91 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:50,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2024-10-14 17:51:50,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2024-10-14 17:51:50,853 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 22 states have (on average 1.0454545454545454) internal successors, (23), 23 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 23 transitions. [2024-10-14 17:51:50,853 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 23 transitions. Word has length 20 [2024-10-14 17:51:50,853 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:50,853 INFO L471 AbstractCegarLoop]: Abstraction has 24 states and 23 transitions. [2024-10-14 17:51:50,854 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,854 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 23 transitions. [2024-10-14 17:51:50,854 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 17:51:50,854 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:50,854 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:50,854 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2024-10-14 17:51:50,854 INFO L396 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:50,855 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:50,855 INFO L85 PathProgramCache]: Analyzing trace with hash -358925588, now seen corresponding path program 1 times [2024-10-14 17:51:50,855 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:50,855 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [451757807] [2024-10-14 17:51:50,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:50,855 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:50,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:50,899 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:50,899 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:50,899 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [451757807] [2024-10-14 17:51:50,899 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [451757807] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:50,900 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:50,900 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2024-10-14 17:51:50,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [230806462] [2024-10-14 17:51:50,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:50,900 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-14 17:51:50,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:50,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-14 17:51:50,901 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:50,901 INFO L87 Difference]: Start difference. First operand 24 states and 23 transitions. Second operand has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:50,924 INFO L93 Difference]: Finished difference Result 23 states and 22 transitions. [2024-10-14 17:51:50,925 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-14 17:51:50,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-14 17:51:50,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:50,925 INFO L225 Difference]: With dead ends: 23 [2024-10-14 17:51:50,925 INFO L226 Difference]: Without dead ends: 22 [2024-10-14 17:51:50,925 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-14 17:51:50,926 INFO L432 NwaCegarLoop]: 3 mSDtfsCounter, 2 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 3 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:50,926 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 3 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-14 17:51:50,926 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2024-10-14 17:51:50,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2024-10-14 17:51:50,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 21 states have (on average 1.0) internal successors, (21), 21 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 21 transitions. [2024-10-14 17:51:50,927 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 21 transitions. Word has length 21 [2024-10-14 17:51:50,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:50,928 INFO L471 AbstractCegarLoop]: Abstraction has 22 states and 21 transitions. [2024-10-14 17:51:50,928 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 10.5) internal successors, (21), 2 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:50,928 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 21 transitions. [2024-10-14 17:51:50,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-14 17:51:50,928 INFO L207 NwaCegarLoop]: Found error trace [2024-10-14 17:51:50,928 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:50,928 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2024-10-14 17:51:50,929 INFO L396 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 33 more)] === [2024-10-14 17:51:50,929 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-14 17:51:50,929 INFO L85 PathProgramCache]: Analyzing trace with hash -358924942, now seen corresponding path program 1 times [2024-10-14 17:51:50,929 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-14 17:51:50,929 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1901835827] [2024-10-14 17:51:50,929 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-14 17:51:50,929 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-14 17:51:50,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-14 17:51:51,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-14 17:51:51,255 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-14 17:51:51,255 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1901835827] [2024-10-14 17:51:51,255 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1901835827] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-14 17:51:51,255 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-14 17:51:51,255 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-14 17:51:51,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1527942230] [2024-10-14 17:51:51,256 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-14 17:51:51,257 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-14 17:51:51,257 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-14 17:51:51,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-14 17:51:51,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2024-10-14 17:51:51,257 INFO L87 Difference]: Start difference. First operand 22 states and 21 transitions. Second operand has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:51,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-14 17:51:51,353 INFO L93 Difference]: Finished difference Result 20 states and 19 transitions. [2024-10-14 17:51:51,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-14 17:51:51,353 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2024-10-14 17:51:51,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-14 17:51:51,354 INFO L225 Difference]: With dead ends: 20 [2024-10-14 17:51:51,354 INFO L226 Difference]: Without dead ends: 0 [2024-10-14 17:51:51,354 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2024-10-14 17:51:51,354 INFO L432 NwaCegarLoop]: 5 mSDtfsCounter, 12 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 67 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-14 17:51:51,355 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 18 Invalid, 67 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-14 17:51:51,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2024-10-14 17:51:51,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2024-10-14 17:51:51,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:51,357 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2024-10-14 17:51:51,357 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2024-10-14 17:51:51,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-14 17:51:51,357 INFO L471 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2024-10-14 17:51:51,357 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 3.0) internal successors, (21), 7 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-14 17:51:51,357 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2024-10-14 17:51:51,357 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2024-10-14 17:51:51,360 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 36 remaining) [2024-10-14 17:51:51,361 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 36 remaining) [2024-10-14 17:51:51,361 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 36 remaining) [2024-10-14 17:51:51,361 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 36 remaining) [2024-10-14 17:51:51,361 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 36 remaining) [2024-10-14 17:51:51,361 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 36 remaining) [2024-10-14 17:51:51,361 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 36 remaining) [2024-10-14 17:51:51,362 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 36 remaining) [2024-10-14 17:51:51,363 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 36 remaining) [2024-10-14 17:51:51,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 36 remaining) [2024-10-14 17:51:51,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 36 remaining) [2024-10-14 17:51:51,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 36 remaining) [2024-10-14 17:51:51,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 36 remaining) [2024-10-14 17:51:51,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 36 remaining) [2024-10-14 17:51:51,364 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 36 remaining) [2024-10-14 17:51:51,365 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 36 remaining) [2024-10-14 17:51:51,366 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 36 remaining) [2024-10-14 17:51:51,367 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 36 remaining) [2024-10-14 17:51:51,367 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr34ASSERT_VIOLATIONMEMORY_LEAK (1 of 36 remaining) [2024-10-14 17:51:51,367 INFO L782 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr35ASSERT_VIOLATIONMEMORY_LEAK (0 of 36 remaining) [2024-10-14 17:51:51,367 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2024-10-14 17:51:51,370 INFO L407 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-14 17:51:51,372 INFO L165 ceAbstractionStarter]: Computing trace abstraction results [2024-10-14 17:51:51,374 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 05:51:51 BoogieIcfgContainer [2024-10-14 17:51:51,374 INFO L131 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2024-10-14 17:51:51,375 INFO L112 PluginConnector]: ------------------------Witness Printer---------------------------- [2024-10-14 17:51:51,375 INFO L270 PluginConnector]: Initializing Witness Printer... [2024-10-14 17:51:51,375 INFO L274 PluginConnector]: Witness Printer initialized [2024-10-14 17:51:51,375 INFO L184 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 05:51:45" (3/4) ... [2024-10-14 17:51:51,377 INFO L139 WitnessPrinter]: Generating witness for correct program [2024-10-14 17:51:51,384 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 22 nodes and edges [2024-10-14 17:51:51,386 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 6 nodes and edges [2024-10-14 17:51:51,386 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2024-10-14 17:51:51,386 INFO L904 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2024-10-14 17:51:51,477 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2024-10-14 17:51:51,477 INFO L149 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.yml [2024-10-14 17:51:51,478 INFO L131 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2024-10-14 17:51:51,478 INFO L158 Benchmark]: Toolchain (without parser) took 6698.18ms. Allocated memory was 161.5MB in the beginning and 245.4MB in the end (delta: 83.9MB). Free memory was 131.0MB in the beginning and 84.1MB in the end (delta: 46.9MB). Peak memory consumption was 130.1MB. Max. memory is 16.1GB. [2024-10-14 17:51:51,478 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 88.4MB in the beginning and 88.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 17:51:51,479 INFO L158 Benchmark]: CACSL2BoogieTranslator took 228.53ms. Allocated memory is still 161.5MB. Free memory was 131.0MB in the beginning and 119.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2024-10-14 17:51:51,479 INFO L158 Benchmark]: Boogie Procedure Inliner took 43.18ms. Allocated memory is still 161.5MB. Free memory was 119.1MB in the beginning and 117.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2024-10-14 17:51:51,479 INFO L158 Benchmark]: Boogie Preprocessor took 64.20ms. Allocated memory is still 161.5MB. Free memory was 117.8MB in the beginning and 115.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2024-10-14 17:51:51,479 INFO L158 Benchmark]: RCFGBuilder took 520.30ms. Allocated memory is still 161.5MB. Free memory was 115.6MB in the beginning and 92.7MB in the end (delta: 23.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2024-10-14 17:51:51,480 INFO L158 Benchmark]: TraceAbstraction took 5732.19ms. Allocated memory was 161.5MB in the beginning and 245.4MB in the end (delta: 83.9MB). Free memory was 91.9MB in the beginning and 89.3MB in the end (delta: 2.6MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. [2024-10-14 17:51:51,480 INFO L158 Benchmark]: Witness Printer took 102.83ms. Allocated memory is still 245.4MB. Free memory was 89.3MB in the beginning and 84.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2024-10-14 17:51:51,482 INFO L338 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 125.8MB. Free memory was 88.4MB in the beginning and 88.2MB in the end (delta: 118.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 228.53ms. Allocated memory is still 161.5MB. Free memory was 131.0MB in the beginning and 119.1MB in the end (delta: 11.8MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 43.18ms. Allocated memory is still 161.5MB. Free memory was 119.1MB in the beginning and 117.8MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 64.20ms. Allocated memory is still 161.5MB. Free memory was 117.8MB in the beginning and 115.6MB in the end (delta: 2.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 520.30ms. Allocated memory is still 161.5MB. Free memory was 115.6MB in the beginning and 92.7MB in the end (delta: 23.0MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * TraceAbstraction took 5732.19ms. Allocated memory was 161.5MB in the beginning and 245.4MB in the end (delta: 83.9MB). Free memory was 91.9MB in the beginning and 89.3MB in the end (delta: 2.6MB). Peak memory consumption was 86.1MB. Max. memory is 16.1GB. * Witness Printer took 102.83ms. Allocated memory is still 245.4MB. Free memory was 89.3MB in the beginning and 84.1MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: -1]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 3]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - PositiveResult [Line: 18]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 59 locations, 36 error locations. Started 1 CEGAR loops. OverallTime: 5.7s, OverallIterations: 21, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 1.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 789 SdHoareTripleChecker+Valid, 1.0s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 789 mSDsluCounter, 302 SdHoareTripleChecker+Invalid, 0.9s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 86 mSDsCounter, 22 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 900 IncrementalHoareTripleChecker+Invalid, 922 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 22 mSolverCounterUnsat, 216 mSDtfsCounter, 900 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 92 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 79 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred in iteration=0, InterpolantAutomatonStates: 93, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 21 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 3.3s InterpolantComputationTime, 229 NumberOfCodeBlocks, 229 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 208 ConstructedInterpolants, 0 QuantifiedInterpolants, 2019 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 21 InterpolantComputations, 21 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 36 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2024-10-14 17:51:51,519 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE