./Ultimate.py --spec /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/properties/valid-memsafety.prp --file /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 84cfde4a Calling Ultimate with: /root/.sdkman/candidates/java/current/bin/java -Dosgi.configuration.area=/storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i -s /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate-clean/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 1080615baa8f6ab055f34c400ddd3cb1288c5bcfd5f3427bea182230e940eff7 --- Real Ultimate output --- This is Ultimate 0.2.5-dev-84cfde4 [2024-10-11 17:57:03,496 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-10-11 17:57:03,593 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-10-11 17:57:03,601 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-10-11 17:57:03,601 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-10-11 17:57:03,635 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-10-11 17:57:03,636 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-10-11 17:57:03,636 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-10-11 17:57:03,636 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-10-11 17:57:03,637 INFO L153 SettingsManager]: * Use memory slicer=true [2024-10-11 17:57:03,637 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-10-11 17:57:03,637 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-10-11 17:57:03,638 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-10-11 17:57:03,640 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-10-11 17:57:03,640 INFO L153 SettingsManager]: * Use SBE=true [2024-10-11 17:57:03,640 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-10-11 17:57:03,640 INFO L153 SettingsManager]: * sizeof long=4 [2024-10-11 17:57:03,641 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-10-11 17:57:03,641 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-10-11 17:57:03,641 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-10-11 17:57:03,641 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-10-11 17:57:03,645 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-10-11 17:57:03,645 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-10-11 17:57:03,646 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-10-11 17:57:03,646 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-10-11 17:57:03,646 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-10-11 17:57:03,646 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-10-11 17:57:03,646 INFO L153 SettingsManager]: * sizeof long double=12 [2024-10-11 17:57:03,646 INFO L153 SettingsManager]: * Use constant arrays=true [2024-10-11 17:57:03,646 INFO L151 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2024-10-11 17:57:03,647 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-10-11 17:57:03,647 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-10-11 17:57:03,647 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-10-11 17:57:03,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:03,647 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-10-11 17:57:03,647 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-10-11 17:57:03,647 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-10-11 17:57:03,647 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-10-11 17:57:03,648 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-10-11 17:57:03,648 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-10-11 17:57:03,648 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-10-11 17:57:03,649 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-10-11 17:57:03,649 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-clean/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 1080615baa8f6ab055f34c400ddd3cb1288c5bcfd5f3427bea182230e940eff7 [2024-10-11 17:57:03,893 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-10-11 17:57:03,922 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-10-11 17:57:03,928 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-10-11 17:57:03,929 INFO L270 PluginConnector]: Initializing CDTParser... [2024-10-11 17:57:03,929 INFO L274 PluginConnector]: CDTParser initialized [2024-10-11 17:57:03,930 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i [2024-10-11 17:57:05,436 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-10-11 17:57:05,679 INFO L384 CDTParser]: Found 1 translation units. [2024-10-11 17:57:05,679 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0220.i [2024-10-11 17:57:05,694 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7888e4ebb/241dd47883c145c38ee64a844f57bf2b/FLAG3ce904447 [2024-10-11 17:57:05,708 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/data/7888e4ebb/241dd47883c145c38ee64a844f57bf2b [2024-10-11 17:57:05,711 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-10-11 17:57:05,712 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-10-11 17:57:05,717 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:05,717 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-10-11 17:57:05,725 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-10-11 17:57:05,726 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:05" (1/1) ... [2024-10-11 17:57:05,727 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6da1a0f1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:05, skipping insertion in model container [2024-10-11 17:57:05,727 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 11.10 05:57:05" (1/1) ... [2024-10-11 17:57:05,781 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-10-11 17:57:06,013 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:06,023 INFO L200 MainTranslator]: Completed pre-run [2024-10-11 17:57:06,072 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-10-11 17:57:06,107 INFO L204 MainTranslator]: Completed translation [2024-10-11 17:57:06,108 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06 WrapperNode [2024-10-11 17:57:06,108 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-10-11 17:57:06,109 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:06,109 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-10-11 17:57:06,109 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-10-11 17:57:06,115 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,126 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,145 INFO L138 Inliner]: procedures = 180, calls = 36, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 117 [2024-10-11 17:57:06,145 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-10-11 17:57:06,146 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-10-11 17:57:06,149 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-10-11 17:57:06,149 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-10-11 17:57:06,157 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,158 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,162 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,177 INFO L175 MemorySlicer]: Split 22 memory accesses to 3 slices as follows [2, 8, 12]. 55 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 8 writes are split as follows [0, 2, 6]. [2024-10-11 17:57:06,178 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,178 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,183 INFO L184 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,186 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,188 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,189 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,191 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-10-11 17:57:06,192 INFO L112 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2024-10-11 17:57:06,192 INFO L270 PluginConnector]: Initializing RCFGBuilder... [2024-10-11 17:57:06,192 INFO L274 PluginConnector]: RCFGBuilder initialized [2024-10-11 17:57:06,193 INFO L184 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (1/1) ... [2024-10-11 17:57:06,202 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-10-11 17:57:06,211 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:06,226 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-10-11 17:57:06,234 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-10-11 17:57:06,271 INFO L130 BoogieDeclarations]: Found specification of procedure calloc_model [2024-10-11 17:57:06,271 INFO L138 BoogieDeclarations]: Found implementation of procedure calloc_model [2024-10-11 17:57:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-10-11 17:57:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-10-11 17:57:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-10-11 17:57:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-10-11 17:57:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-10-11 17:57:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-10-11 17:57:06,272 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-10-11 17:57:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-10-11 17:57:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-10-11 17:57:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-10-11 17:57:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-10-11 17:57:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-10-11 17:57:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-10-11 17:57:06,273 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-10-11 17:57:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-10-11 17:57:06,274 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-10-11 17:57:06,274 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-10-11 17:57:06,428 INFO L238 CfgBuilder]: Building ICFG [2024-10-11 17:57:06,430 INFO L264 CfgBuilder]: Building CFG for each procedure with an implementation [2024-10-11 17:57:06,853 INFO L? ?]: Removed 94 outVars from TransFormulas that were not future-live. [2024-10-11 17:57:06,853 INFO L287 CfgBuilder]: Performing block encoding [2024-10-11 17:57:06,932 INFO L309 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-10-11 17:57:06,932 INFO L314 CfgBuilder]: Removed 4 assume(true) statements. [2024-10-11 17:57:06,933 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:06 BoogieIcfgContainer [2024-10-11 17:57:06,933 INFO L131 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2024-10-11 17:57:06,938 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-10-11 17:57:06,938 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-10-11 17:57:06,945 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-10-11 17:57:06,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 11.10 05:57:05" (1/3) ... [2024-10-11 17:57:06,946 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5621b61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:06, skipping insertion in model container [2024-10-11 17:57:06,946 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 11.10 05:57:06" (2/3) ... [2024-10-11 17:57:06,947 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5621b61b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 11.10 05:57:06, skipping insertion in model container [2024-10-11 17:57:06,947 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 11.10 05:57:06" (3/3) ... [2024-10-11 17:57:06,948 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0220.i [2024-10-11 17:57:06,981 INFO L209 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-10-11 17:57:06,981 INFO L149 ceAbstractionStarter]: Applying trace abstraction to program that has 46 error locations. [2024-10-11 17:57:07,067 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-10-11 17:57:07,081 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;@18b22c71, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-10-11 17:57:07,082 INFO L334 AbstractCegarLoop]: Starting to check reachability of 46 error locations. [2024-10-11 17:57:07,085 INFO L276 IsEmpty]: Start isEmpty. Operand has 95 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 91 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:07,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2024-10-11 17:57:07,100 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:07,100 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1] [2024-10-11 17:57:07,102 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:07,107 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:07,108 INFO L85 PathProgramCache]: Analyzing trace with hash 211614, now seen corresponding path program 1 times [2024-10-11 17:57:07,123 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:07,124 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1768477423] [2024-10-11 17:57:07,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:07,124 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:07,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:07,309 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:07,309 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:07,310 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1768477423] [2024-10-11 17:57:07,310 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1768477423] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:07,310 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:07,310 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:07,311 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948695324] [2024-10-11 17:57:07,313 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:07,315 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-10-11 17:57:07,316 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:07,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-10-11 17:57:07,338 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:57:07,340 INFO L87 Difference]: Start difference. First operand has 95 states, 45 states have (on average 2.2888888888888888) internal successors, (103), 91 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 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) [2024-10-11 17:57:07,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:07,388 INFO L93 Difference]: Finished difference Result 95 states and 100 transitions. [2024-10-11 17:57:07,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-10-11 17:57:07,392 INFO L78 Accepts]: Start accepts. Automaton has has 2 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 [2024-10-11 17:57:07,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:07,398 INFO L225 Difference]: With dead ends: 95 [2024-10-11 17:57:07,399 INFO L226 Difference]: Without dead ends: 94 [2024-10-11 17:57:07,400 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-10-11 17:57:07,403 INFO L432 NwaCegarLoop]: 88 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:07,404 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 88 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-10-11 17:57:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2024-10-11 17:57:07,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2024-10-11 17:57:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 45 states have (on average 2.111111111111111) internal successors, (95), 90 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:07,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2024-10-11 17:57:07,436 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 3 [2024-10-11 17:57:07,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:07,437 INFO L471 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2024-10-11 17:57:07,437 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 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) [2024-10-11 17:57:07,437 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2024-10-11 17:57:07,437 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2024-10-11 17:57:07,437 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:07,437 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2024-10-11 17:57:07,437 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-10-11 17:57:07,438 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:07,438 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:07,438 INFO L85 PathProgramCache]: Analyzing trace with hash 201167092, now seen corresponding path program 1 times [2024-10-11 17:57:07,439 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:07,439 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1855329142] [2024-10-11 17:57:07,439 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:07,439 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:07,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:07,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:07,528 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:07,528 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1855329142] [2024-10-11 17:57:07,528 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1855329142] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:07,528 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:07,528 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-10-11 17:57:07,528 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626297669] [2024-10-11 17:57:07,529 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:07,529 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-10-11 17:57:07,530 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:07,530 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-10-11 17:57:07,530 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-10-11 17:57:07,530 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:07,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:07,592 INFO L93 Difference]: Finished difference Result 93 states and 98 transitions. [2024-10-11 17:57:07,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-10-11 17:57:07,593 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2024-10-11 17:57:07,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:07,594 INFO L225 Difference]: With dead ends: 93 [2024-10-11 17:57:07,594 INFO L226 Difference]: Without dead ends: 93 [2024-10-11 17:57:07,594 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 [2024-10-11 17:57:07,595 INFO L432 NwaCegarLoop]: 83 mSDtfsCounter, 3 mSDsluCounter, 49 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 132 SdHoareTripleChecker+Invalid, 60 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:07,595 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [3 Valid, 132 Invalid, 60 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 60 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:07,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2024-10-11 17:57:07,599 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2024-10-11 17:57:07,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 45 states have (on average 2.088888888888889) internal successors, (94), 89 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:07,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 98 transitions. [2024-10-11 17:57:07,601 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 98 transitions. Word has length 5 [2024-10-11 17:57:07,601 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:07,601 INFO L471 AbstractCegarLoop]: Abstraction has 93 states and 98 transitions. [2024-10-11 17:57:07,601 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:07,602 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 98 transitions. [2024-10-11 17:57:07,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-10-11 17:57:07,602 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:07,602 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-10-11 17:57:07,602 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-10-11 17:57:07,602 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:07,603 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:07,603 INFO L85 PathProgramCache]: Analyzing trace with hash 1941212590, now seen corresponding path program 1 times [2024-10-11 17:57:07,603 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:07,603 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872605744] [2024-10-11 17:57:07,603 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:07,604 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:07,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:07,626 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [163520433] [2024-10-11 17:57:07,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:07,626 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:07,626 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:07,632 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:07,634 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-10-11 17:57:07,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:07,695 INFO L255 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 20 conjuncts are in the unsatisfiable core [2024-10-11 17:57:07,700 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:07,759 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:57:07,777 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-10-11 17:57:07,777 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:07,777 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:07,777 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872605744] [2024-10-11 17:57:07,778 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:07,778 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [163520433] [2024-10-11 17:57:07,778 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [163520433] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:07,778 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:07,778 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-10-11 17:57:07,779 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148616168] [2024-10-11 17:57:07,779 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:07,779 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-10-11 17:57:07,779 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:07,779 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-10-11 17:57:07,780 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-10-11 17:57:07,780 INFO L87 Difference]: Start difference. First operand 93 states and 98 transitions. Second operand has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:07,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:07,861 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2024-10-11 17:57:07,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-10-11 17:57:07,862 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 6 [2024-10-11 17:57:07,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:07,863 INFO L225 Difference]: With dead ends: 92 [2024-10-11 17:57:07,863 INFO L226 Difference]: Without dead ends: 92 [2024-10-11 17:57:07,863 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-10-11 17:57:07,864 INFO L432 NwaCegarLoop]: 80 mSDtfsCounter, 7 mSDsluCounter, 132 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 212 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:07,864 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 212 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:07,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2024-10-11 17:57:07,868 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2024-10-11 17:57:07,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 45 states have (on average 2.066666666666667) internal successors, (93), 88 states have internal predecessors, (93), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:07,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 97 transitions. [2024-10-11 17:57:07,869 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 97 transitions. Word has length 6 [2024-10-11 17:57:07,870 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:07,870 INFO L471 AbstractCegarLoop]: Abstraction has 92 states and 97 transitions. [2024-10-11 17:57:07,870 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.6666666666666667) internal successors, (5), 3 states have internal predecessors, (5), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-10-11 17:57:07,870 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 97 transitions. [2024-10-11 17:57:07,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 17:57:07,871 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:07,871 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:07,887 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-10-11 17:57:08,074 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:08,075 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:08,076 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:08,076 INFO L85 PathProgramCache]: Analyzing trace with hash 445225574, now seen corresponding path program 1 times [2024-10-11 17:57:08,076 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:08,076 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [354479654] [2024-10-11 17:57:08,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:08,077 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:08,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,259 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:08,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,269 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:08,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,319 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:08,320 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:08,320 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [354479654] [2024-10-11 17:57:08,320 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [354479654] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:08,320 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:08,320 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 17:57:08,320 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1270167935] [2024-10-11 17:57:08,320 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:08,321 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:57:08,321 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:08,322 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:57:08,322 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 17:57:08,322 INFO L87 Difference]: Start difference. First operand 92 states and 97 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:08,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:08,516 INFO L93 Difference]: Finished difference Result 89 states and 94 transitions. [2024-10-11 17:57:08,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:57:08,517 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-11 17:57:08,517 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:08,518 INFO L225 Difference]: With dead ends: 89 [2024-10-11 17:57:08,518 INFO L226 Difference]: Without dead ends: 89 [2024-10-11 17:57:08,518 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 17:57:08,519 INFO L432 NwaCegarLoop]: 69 mSDtfsCounter, 10 mSDsluCounter, 258 mSDsCounter, 0 mSdLazyCounter, 307 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 327 SdHoareTripleChecker+Invalid, 310 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 307 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:08,519 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [10 Valid, 327 Invalid, 310 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 307 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:08,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2024-10-11 17:57:08,522 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2024-10-11 17:57:08,523 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 45 states have (on average 2.0) internal successors, (90), 85 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:08,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 94 transitions. [2024-10-11 17:57:08,524 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 94 transitions. Word has length 21 [2024-10-11 17:57:08,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:08,525 INFO L471 AbstractCegarLoop]: Abstraction has 89 states and 94 transitions. [2024-10-11 17:57:08,525 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 6 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:08,525 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 94 transitions. [2024-10-11 17:57:08,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2024-10-11 17:57:08,526 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:08,526 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:08,526 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2024-10-11 17:57:08,526 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:08,526 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:08,527 INFO L85 PathProgramCache]: Analyzing trace with hash 445225575, now seen corresponding path program 1 times [2024-10-11 17:57:08,527 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:08,527 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1738584972] [2024-10-11 17:57:08,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:08,527 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:08,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:08,558 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [546672573] [2024-10-11 17:57:08,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:08,558 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:08,558 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:08,563 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:08,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-10-11 17:57:08,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:08,676 INFO L255 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 39 conjuncts are in the unsatisfiable core [2024-10-11 17:57:08,684 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:08,711 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-10-11 17:57:08,738 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:57:08,942 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:08,943 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:08,956 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:57:08,957 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:57:08,977 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:08,980 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-10-11 17:57:08,980 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:08,980 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1738584972] [2024-10-11 17:57:08,980 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:08,981 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [546672573] [2024-10-11 17:57:08,981 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [546672573] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:08,981 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:08,981 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-10-11 17:57:08,981 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2003853600] [2024-10-11 17:57:08,981 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:08,981 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2024-10-11 17:57:08,981 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:08,982 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2024-10-11 17:57:08,982 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2024-10-11 17:57:08,982 INFO L87 Difference]: Start difference. First operand 89 states and 94 transitions. Second operand has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:09,308 INFO L93 Difference]: Finished difference Result 86 states and 91 transitions. [2024-10-11 17:57:09,308 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:57:09,308 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 21 [2024-10-11 17:57:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:09,310 INFO L225 Difference]: With dead ends: 86 [2024-10-11 17:57:09,311 INFO L226 Difference]: Without dead ends: 86 [2024-10-11 17:57:09,311 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2024-10-11 17:57:09,312 INFO L432 NwaCegarLoop]: 66 mSDtfsCounter, 12 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 242 SdHoareTripleChecker+Invalid, 366 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:09,312 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [12 Valid, 242 Invalid, 366 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2024-10-11 17:57:09,313 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2024-10-11 17:57:09,318 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2024-10-11 17:57:09,318 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 45 states have (on average 1.9333333333333333) internal successors, (87), 82 states have internal predecessors, (87), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:09,321 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2024-10-11 17:57:09,321 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 21 [2024-10-11 17:57:09,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:09,321 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2024-10-11 17:57:09,322 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 7 states have internal predecessors, (17), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:09,322 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2024-10-11 17:57:09,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 17:57:09,322 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:09,322 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:09,340 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-10-11 17:57:09,523 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:09,524 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:09,524 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:09,524 INFO L85 PathProgramCache]: Analyzing trace with hash 860310429, now seen corresponding path program 1 times [2024-10-11 17:57:09,524 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:09,524 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717396141] [2024-10-11 17:57:09,525 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:09,526 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:09,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,779 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,832 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:09,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:09,913 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:09,914 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717396141] [2024-10-11 17:57:09,914 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717396141] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:09,914 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [191155928] [2024-10-11 17:57:09,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:09,914 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:09,915 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:09,916 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:09,923 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-10-11 17:57:10,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:10,007 INFO L255 TraceCheckSpWp]: Trace formula consists of 212 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-10-11 17:57:10,010 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:10,015 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:57:10,073 WARN L873 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) 0) (= |c_#valid| (store |c_old(#valid)| |calloc_model_~ptr~0#1.base| (select |c_#valid| |calloc_model_~ptr~0#1.base|))))) is different from true [2024-10-11 17:57:10,119 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:57:10,120 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 17:57:10,137 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-10-11 17:57:10,138 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2024-10-11 17:57:10,148 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 4 not checked. [2024-10-11 17:57:10,149 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:10,220 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [191155928] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:10,220 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:10,220 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 13 [2024-10-11 17:57:10,221 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350619411] [2024-10-11 17:57:10,221 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:10,221 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 17:57:10,221 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:10,222 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 17:57:10,222 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=151, Unknown=1, NotChecked=24, Total=210 [2024-10-11 17:57:10,222 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:10,503 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:10,503 INFO L93 Difference]: Finished difference Result 85 states and 92 transitions. [2024-10-11 17:57:10,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:57:10,503 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 24 [2024-10-11 17:57:10,504 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:10,505 INFO L225 Difference]: With dead ends: 85 [2024-10-11 17:57:10,505 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 17:57:10,506 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 30 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 1 IntricatePredicates, 1 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=64, Invalid=281, Unknown=1, NotChecked=34, Total=380 [2024-10-11 17:57:10,506 INFO L432 NwaCegarLoop]: 60 mSDtfsCounter, 24 mSDsluCounter, 306 mSDsCounter, 0 mSdLazyCounter, 385 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 366 SdHoareTripleChecker+Invalid, 479 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 385 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:10,507 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 366 Invalid, 479 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 385 Invalid, 0 Unknown, 88 Unchecked, 0.2s Time] [2024-10-11 17:57:10,507 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 17:57:10,516 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 83. [2024-10-11 17:57:10,516 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 45 states have (on average 1.8666666666666667) internal successors, (84), 79 states have internal predecessors, (84), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:10,517 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2024-10-11 17:57:10,517 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 24 [2024-10-11 17:57:10,517 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:10,517 INFO L471 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2024-10-11 17:57:10,517 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:10,517 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2024-10-11 17:57:10,517 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2024-10-11 17:57:10,517 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:10,518 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:10,547 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-10-11 17:57:10,718 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,4 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:10,719 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:10,719 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:10,722 INFO L85 PathProgramCache]: Analyzing trace with hash 860310430, now seen corresponding path program 1 times [2024-10-11 17:57:10,722 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:10,722 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1708761797] [2024-10-11 17:57:10,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:10,723 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:10,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:10,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:10,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:11,000 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:11,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:11,216 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:11,216 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:11,216 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1708761797] [2024-10-11 17:57:11,216 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1708761797] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:11,217 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:11,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2024-10-11 17:57:11,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332053825] [2024-10-11 17:57:11,217 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:11,217 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-10-11 17:57:11,217 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:11,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-10-11 17:57:11,218 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:57:11,218 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:11,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:11,388 INFO L93 Difference]: Finished difference Result 89 states and 95 transitions. [2024-10-11 17:57:11,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2024-10-11 17:57:11,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 24 [2024-10-11 17:57:11,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:11,390 INFO L225 Difference]: With dead ends: 89 [2024-10-11 17:57:11,390 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 17:57:11,390 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2024-10-11 17:57:11,391 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 4 mSDsluCounter, 173 mSDsCounter, 0 mSdLazyCounter, 282 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 243 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 282 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:11,392 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 243 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 282 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:11,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 17:57:11,398 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-10-11 17:57:11,399 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 46 states have (on average 1.8695652173913044) internal successors, (86), 81 states have internal predecessors, (86), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:11,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 91 transitions. [2024-10-11 17:57:11,401 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 91 transitions. Word has length 24 [2024-10-11 17:57:11,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:11,401 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 91 transitions. [2024-10-11 17:57:11,402 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 8 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:11,402 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 91 transitions. [2024-10-11 17:57:11,402 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2024-10-11 17:57:11,402 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:11,402 INFO L215 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:11,402 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2024-10-11 17:57:11,403 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:11,403 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:11,403 INFO L85 PathProgramCache]: Analyzing trace with hash -1942201864, now seen corresponding path program 1 times [2024-10-11 17:57:11,403 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:11,403 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975746053] [2024-10-11 17:57:11,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:11,404 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:11,662 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:11,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:11,672 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:11,866 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:11,867 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:11,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975746053] [2024-10-11 17:57:11,867 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975746053] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:11,867 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [659547455] [2024-10-11 17:57:11,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:11,867 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:11,867 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:11,869 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:11,871 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-10-11 17:57:11,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:11,972 INFO L255 TraceCheckSpWp]: Trace formula consists of 227 conjuncts, 26 conjuncts are in the unsatisfiable core [2024-10-11 17:57:11,974 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:12,000 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:57:12,009 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-10-11 17:57:16,653 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:16,654 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2024-10-11 17:57:16,695 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-10-11 17:57:16,695 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-10-11 17:57:16,754 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:16,755 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:29,266 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:29,266 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [659547455] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:29,266 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:57:29,266 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 9, 9] total 25 [2024-10-11 17:57:29,267 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692086892] [2024-10-11 17:57:29,267 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:29,267 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2024-10-11 17:57:29,267 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:29,268 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2024-10-11 17:57:29,268 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=510, Unknown=4, NotChecked=0, Total=600 [2024-10-11 17:57:29,268 INFO L87 Difference]: Start difference. First operand 85 states and 91 transitions. Second operand has 25 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 17:57:46,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:46,276 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2024-10-11 17:57:46,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2024-10-11 17:57:46,277 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) Word has length 25 [2024-10-11 17:57:46,277 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:46,278 INFO L225 Difference]: With dead ends: 98 [2024-10-11 17:57:46,278 INFO L226 Difference]: Without dead ends: 90 [2024-10-11 17:57:46,278 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 33.2s TimeCoverageRelationStatistics Valid=135, Invalid=727, Unknown=8, NotChecked=0, Total=870 [2024-10-11 17:57:46,279 INFO L432 NwaCegarLoop]: 70 mSDtfsCounter, 9 mSDsluCounter, 366 mSDsCounter, 0 mSdLazyCounter, 726 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 436 SdHoareTripleChecker+Invalid, 730 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 726 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:46,279 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 436 Invalid, 730 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 726 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2024-10-11 17:57:46,279 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2024-10-11 17:57:46,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2024-10-11 17:57:46,282 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 49 states have (on average 1.8775510204081634) internal successors, (92), 84 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:46,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 97 transitions. [2024-10-11 17:57:46,282 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 97 transitions. Word has length 25 [2024-10-11 17:57:46,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:46,282 INFO L471 AbstractCegarLoop]: Abstraction has 88 states and 97 transitions. [2024-10-11 17:57:46,282 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 22 states have (on average 1.8181818181818181) internal successors, (40), 21 states have internal predecessors, (40), 1 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 1 states have call successors, (4) [2024-10-11 17:57:46,282 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 97 transitions. [2024-10-11 17:57:46,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2024-10-11 17:57:46,283 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:46,283 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:46,298 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Ended with exit code 0 [2024-10-11 17:57:46,483 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2024-10-11 17:57:46,484 INFO L396 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:46,484 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:46,484 INFO L85 PathProgramCache]: Analyzing trace with hash 1329926686, now seen corresponding path program 2 times [2024-10-11 17:57:46,484 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:46,484 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2006069509] [2024-10-11 17:57:46,485 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:46,485 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:46,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-10-11 17:57:46,525 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1723772257] [2024-10-11 17:57:46,526 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-10-11 17:57:46,526 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:46,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:46,530 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:46,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-10-11 17:57:46,629 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-10-11 17:57:46,630 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2024-10-11 17:57:46,632 INFO L255 TraceCheckSpWp]: Trace formula consists of 272 conjuncts, 63 conjuncts are in the unsatisfiable core [2024-10-11 17:57:46,636 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:46,660 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 9 [2024-10-11 17:57:46,668 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-10-11 17:57:47,003 INFO L349 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2024-10-11 17:57:47,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2024-10-11 17:57:47,012 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:47,078 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:47,079 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:47,091 INFO L349 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2024-10-11 17:57:47,092 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2024-10-11 17:57:47,115 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2024-10-11 17:57:47,115 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:47,311 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:47,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2006069509] [2024-10-11 17:57:47,312 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-10-11 17:57:47,312 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1723772257] [2024-10-11 17:57:47,312 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1723772257] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:47,312 INFO L185 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2024-10-11 17:57:47,312 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2024-10-11 17:57:47,312 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550128309] [2024-10-11 17:57:47,312 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:47,312 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2024-10-11 17:57:47,313 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:47,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2024-10-11 17:57:47,313 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=224, Unknown=0, NotChecked=0, Total=272 [2024-10-11 17:57:47,314 INFO L87 Difference]: Start difference. First operand 88 states and 97 transitions. Second operand has 14 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:47,959 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:47,959 INFO L93 Difference]: Finished difference Result 85 states and 94 transitions. [2024-10-11 17:57:47,959 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2024-10-11 17:57:47,959 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 28 [2024-10-11 17:57:47,960 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:47,960 INFO L225 Difference]: With dead ends: 85 [2024-10-11 17:57:47,961 INFO L226 Difference]: Without dead ends: 85 [2024-10-11 17:57:47,961 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=92, Invalid=414, Unknown=0, NotChecked=0, Total=506 [2024-10-11 17:57:47,962 INFO L432 NwaCegarLoop]: 56 mSDtfsCounter, 30 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 633 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 331 SdHoareTripleChecker+Invalid, 640 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 633 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:47,962 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [30 Valid, 331 Invalid, 640 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 633 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-10-11 17:57:47,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2024-10-11 17:57:47,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 85. [2024-10-11 17:57:47,965 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 49 states have (on average 1.816326530612245) internal successors, (89), 81 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:47,965 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2024-10-11 17:57:47,965 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 28 [2024-10-11 17:57:47,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:47,966 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2024-10-11 17:57:47,966 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:47,966 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2024-10-11 17:57:47,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 17:57:47,966 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:47,966 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:47,996 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-10-11 17:57:48,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:48,167 INFO L396 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:48,168 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:48,168 INFO L85 PathProgramCache]: Analyzing trace with hash 609183686, now seen corresponding path program 1 times [2024-10-11 17:57:48,168 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:48,168 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [340236913] [2024-10-11 17:57:48,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:48,168 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:48,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:48,914 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:48,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:48,994 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:49,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:49,050 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:57:49,051 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:49,051 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [340236913] [2024-10-11 17:57:49,051 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [340236913] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:49,051 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:49,051 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2024-10-11 17:57:49,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [765655324] [2024-10-11 17:57:49,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:49,052 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2024-10-11 17:57:49,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:49,053 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2024-10-11 17:57:49,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2024-10-11 17:57:49,053 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:49,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:49,380 INFO L93 Difference]: Finished difference Result 102 states and 111 transitions. [2024-10-11 17:57:49,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2024-10-11 17:57:49,380 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 32 [2024-10-11 17:57:49,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:49,381 INFO L225 Difference]: With dead ends: 102 [2024-10-11 17:57:49,381 INFO L226 Difference]: Without dead ends: 102 [2024-10-11 17:57:49,381 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=72, Invalid=270, Unknown=0, NotChecked=0, Total=342 [2024-10-11 17:57:49,382 INFO L432 NwaCegarLoop]: 50 mSDtfsCounter, 114 mSDsluCounter, 305 mSDsCounter, 0 mSdLazyCounter, 448 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 114 SdHoareTripleChecker+Valid, 355 SdHoareTripleChecker+Invalid, 472 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 448 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:49,383 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [114 Valid, 355 Invalid, 472 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 448 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:49,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2024-10-11 17:57:49,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2024-10-11 17:57:49,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 52 states have (on average 1.8076923076923077) internal successors, (94), 82 states have internal predecessors, (94), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:49,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 99 transitions. [2024-10-11 17:57:49,390 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 99 transitions. Word has length 32 [2024-10-11 17:57:49,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:49,390 INFO L471 AbstractCegarLoop]: Abstraction has 86 states and 99 transitions. [2024-10-11 17:57:49,390 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:49,390 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 99 transitions. [2024-10-11 17:57:49,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2024-10-11 17:57:49,391 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:49,391 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:49,391 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2024-10-11 17:57:49,391 INFO L396 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:49,391 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:49,391 INFO L85 PathProgramCache]: Analyzing trace with hash 609183687, now seen corresponding path program 1 times [2024-10-11 17:57:49,391 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:49,391 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1790037425] [2024-10-11 17:57:49,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:49,391 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:49,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:49,983 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:49,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:50,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:50,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:50,183 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:50,183 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:50,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1790037425] [2024-10-11 17:57:50,183 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1790037425] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:50,183 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1697537908] [2024-10-11 17:57:50,183 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:50,184 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:50,184 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:50,185 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:50,188 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-10-11 17:57:50,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:50,285 INFO L255 TraceCheckSpWp]: Trace formula consists of 316 conjuncts, 33 conjuncts are in the unsatisfiable core [2024-10-11 17:57:50,287 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:50,356 WARN L873 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) 0) (= (store |c_old(#length)| |calloc_model_~ptr~0#1.base| (select |c_#length| |calloc_model_~ptr~0#1.base|)) |c_#length|) (= |c_#valid| (store |c_old(#valid)| |calloc_model_~ptr~0#1.base| (select |c_#valid| |calloc_model_~ptr~0#1.base|))))) is different from true [2024-10-11 17:57:50,380 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:50,381 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:50,397 INFO L349 Elim1Store]: treesize reduction 20, result has 33.3 percent of original size [2024-10-11 17:57:50,397 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 19 treesize of output 16 [2024-10-11 17:57:50,425 WARN L873 $PredicateComparison]: unable to prove that (exists ((|calloc_model_~ptr~0#1.base| Int)) (and (= (select |c_old(#valid)| |calloc_model_~ptr~0#1.base|) 0) (= (store |c_old(#length)| |calloc_model_~ptr~0#1.base| (select |c_#length| |calloc_model_~ptr~0#1.base|)) |c_#length|))) is different from true [2024-10-11 17:57:50,481 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:50,482 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-10-11 17:57:50,528 INFO L349 Elim1Store]: treesize reduction 13, result has 40.9 percent of original size [2024-10-11 17:57:50,528 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 13 [2024-10-11 17:57:50,602 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 11 trivial. 8 not checked. [2024-10-11 17:57:50,602 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:50,784 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1697537908] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:50,785 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:50,785 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 7] total 21 [2024-10-11 17:57:50,785 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1546632147] [2024-10-11 17:57:50,785 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:50,785 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2024-10-11 17:57:50,786 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:50,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2024-10-11 17:57:50,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=467, Unknown=2, NotChecked=90, Total=650 [2024-10-11 17:57:50,787 INFO L87 Difference]: Start difference. First operand 86 states and 99 transitions. Second operand has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 17:57:51,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:51,342 INFO L93 Difference]: Finished difference Result 101 states and 111 transitions. [2024-10-11 17:57:51,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 17:57:51,342 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 32 [2024-10-11 17:57:51,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:51,343 INFO L225 Difference]: With dead ends: 101 [2024-10-11 17:57:51,343 INFO L226 Difference]: Without dead ends: 101 [2024-10-11 17:57:51,344 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 69 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=209, Invalid=919, Unknown=2, NotChecked=130, Total=1260 [2024-10-11 17:57:51,344 INFO L432 NwaCegarLoop]: 48 mSDtfsCounter, 135 mSDsluCounter, 290 mSDsCounter, 0 mSdLazyCounter, 490 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 135 SdHoareTripleChecker+Valid, 338 SdHoareTripleChecker+Invalid, 716 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 490 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 197 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:51,344 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [135 Valid, 338 Invalid, 716 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 490 Invalid, 0 Unknown, 197 Unchecked, 0.3s Time] [2024-10-11 17:57:51,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2024-10-11 17:57:51,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 84. [2024-10-11 17:57:51,347 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.7307692307692308) internal successors, (90), 80 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:51,347 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 95 transitions. [2024-10-11 17:57:51,347 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 95 transitions. Word has length 32 [2024-10-11 17:57:51,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:51,348 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 95 transitions. [2024-10-11 17:57:51,348 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 19 states have (on average 2.6315789473684212) internal successors, (50), 19 states have internal predecessors, (50), 3 states have call successors, (4), 2 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2024-10-11 17:57:51,348 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 95 transitions. [2024-10-11 17:57:51,348 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 17:57:51,348 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:51,348 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:51,361 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2024-10-11 17:57:51,552 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2024-10-11 17:57:51,553 INFO L396 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:51,553 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:51,554 INFO L85 PathProgramCache]: Analyzing trace with hash 1388145465, now seen corresponding path program 1 times [2024-10-11 17:57:51,554 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:51,554 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [97628951] [2024-10-11 17:57:51,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:51,554 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:51,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:51,843 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:51,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:51,854 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:51,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:51,874 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:57:51,875 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:51,875 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [97628951] [2024-10-11 17:57:51,875 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [97628951] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:51,875 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:51,875 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2024-10-11 17:57:51,875 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [692047596] [2024-10-11 17:57:51,875 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:51,876 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-10-11 17:57:51,876 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:51,876 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-10-11 17:57:51,876 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:57:51,877 INFO L87 Difference]: Start difference. First operand 84 states and 95 transitions. Second operand has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:52,098 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:52,098 INFO L93 Difference]: Finished difference Result 126 states and 142 transitions. [2024-10-11 17:57:52,099 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2024-10-11 17:57:52,099 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 37 [2024-10-11 17:57:52,100 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:52,100 INFO L225 Difference]: With dead ends: 126 [2024-10-11 17:57:52,100 INFO L226 Difference]: Without dead ends: 126 [2024-10-11 17:57:52,101 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2024-10-11 17:57:52,101 INFO L432 NwaCegarLoop]: 71 mSDtfsCounter, 39 mSDsluCounter, 185 mSDsCounter, 0 mSdLazyCounter, 318 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 318 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:52,101 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 256 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 318 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:52,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2024-10-11 17:57:52,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 84. [2024-10-11 17:57:52,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.7115384615384615) internal successors, (89), 80 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:52,105 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 94 transitions. [2024-10-11 17:57:52,105 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 94 transitions. Word has length 37 [2024-10-11 17:57:52,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:52,106 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 94 transitions. [2024-10-11 17:57:52,106 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:52,106 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 94 transitions. [2024-10-11 17:57:52,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2024-10-11 17:57:52,107 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:52,108 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:52,108 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2024-10-11 17:57:52,108 INFO L396 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:52,108 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:52,108 INFO L85 PathProgramCache]: Analyzing trace with hash 1388145466, now seen corresponding path program 1 times [2024-10-11 17:57:52,108 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:52,108 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [648309829] [2024-10-11 17:57:52,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:52,109 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:52,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:52,382 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:52,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:52,410 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:52,428 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:52,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [648309829] [2024-10-11 17:57:52,428 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [648309829] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:52,428 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [872803419] [2024-10-11 17:57:52,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:52,428 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:52,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:52,432 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:52,436 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2024-10-11 17:57:52,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:52,551 INFO L255 TraceCheckSpWp]: Trace formula consists of 368 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 17:57:52,554 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:52,978 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:52,982 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:53,049 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:53,050 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-11 17:57:53,053 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:53,054 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-10-11 17:57:53,074 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:53,074 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:53,127 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2024-10-11 17:57:53,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 90 treesize of output 82 [2024-10-11 17:57:53,141 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:53,142 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-10-11 17:57:53,238 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:57:53,239 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 25 treesize of output 29 [2024-10-11 17:57:53,584 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:53,585 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [872803419] provided 0 perfect and 2 imperfect interpolant sequences [2024-10-11 17:57:53,585 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-10-11 17:57:53,585 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11, 12] total 32 [2024-10-11 17:57:53,585 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717147496] [2024-10-11 17:57:53,585 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-10-11 17:57:53,586 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2024-10-11 17:57:53,586 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:53,587 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2024-10-11 17:57:53,587 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=138, Invalid=918, Unknown=0, NotChecked=0, Total=1056 [2024-10-11 17:57:53,587 INFO L87 Difference]: Start difference. First operand 84 states and 94 transitions. Second operand has 33 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 29 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:57:54,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:54,597 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2024-10-11 17:57:54,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2024-10-11 17:57:54,599 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 29 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) Word has length 37 [2024-10-11 17:57:54,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:54,600 INFO L225 Difference]: With dead ends: 124 [2024-10-11 17:57:54,600 INFO L226 Difference]: Without dead ends: 124 [2024-10-11 17:57:54,601 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 98 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 45 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 408 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=295, Invalid=1867, Unknown=0, NotChecked=0, Total=2162 [2024-10-11 17:57:54,601 INFO L432 NwaCegarLoop]: 45 mSDtfsCounter, 193 mSDsluCounter, 680 mSDsCounter, 0 mSdLazyCounter, 837 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 725 SdHoareTripleChecker+Invalid, 841 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 837 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:54,603 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 725 Invalid, 841 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 837 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2024-10-11 17:57:54,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2024-10-11 17:57:54,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 84. [2024-10-11 17:57:54,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 52 states have (on average 1.6923076923076923) internal successors, (88), 80 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:54,610 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2024-10-11 17:57:54,610 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 37 [2024-10-11 17:57:54,610 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:54,610 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2024-10-11 17:57:54,610 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 26 states have (on average 3.3076923076923075) internal successors, (86), 29 states have internal predecessors, (86), 6 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 6 states have call successors, (6) [2024-10-11 17:57:54,610 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2024-10-11 17:57:54,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 17:57:54,611 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:54,611 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:54,624 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2024-10-11 17:57:54,811 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:54,812 INFO L396 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:54,812 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:54,812 INFO L85 PathProgramCache]: Analyzing trace with hash -1726955921, now seen corresponding path program 1 times [2024-10-11 17:57:54,812 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:54,812 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1398542305] [2024-10-11 17:57:54,812 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:54,812 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,456 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:55,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,542 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:55,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,566 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:55,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1398542305] [2024-10-11 17:57:55,566 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1398542305] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:55,566 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1816046934] [2024-10-11 17:57:55,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:55,567 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:55,567 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:55,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:55,569 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2024-10-11 17:57:55,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:55,688 INFO L255 TraceCheckSpWp]: Trace formula consists of 384 conjuncts, 40 conjuncts are in the unsatisfiable core [2024-10-11 17:57:55,690 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:56,003 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:56,011 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:56,177 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:56,178 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2024-10-11 17:57:56,182 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:56,182 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 26 treesize of output 14 [2024-10-11 17:57:56,186 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2024-10-11 17:57:56,187 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:56,309 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 60 treesize of output 56 [2024-10-11 17:57:56,311 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 117 treesize of output 105 [2024-10-11 17:57:56,478 INFO L349 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2024-10-11 17:57:56,478 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 22 treesize of output 26 [2024-10-11 17:57:56,711 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:57:56,715 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1816046934] provided 1 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:56,715 INFO L185 FreeRefinementEngine]: Found 1 perfect and 2 imperfect interpolant sequences. [2024-10-11 17:57:56,715 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [15, 10] total 33 [2024-10-11 17:57:56,716 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1138034272] [2024-10-11 17:57:56,716 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:56,716 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2024-10-11 17:57:56,716 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:56,716 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2024-10-11 17:57:56,717 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=149, Invalid=973, Unknown=0, NotChecked=0, Total=1122 [2024-10-11 17:57:56,717 INFO L87 Difference]: Start difference. First operand 84 states and 93 transitions. Second operand has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:57,165 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:57,166 INFO L93 Difference]: Finished difference Result 123 states and 136 transitions. [2024-10-11 17:57:57,166 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2024-10-11 17:57:57,166 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 39 [2024-10-11 17:57:57,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:57,167 INFO L225 Difference]: With dead ends: 123 [2024-10-11 17:57:57,167 INFO L226 Difference]: Without dead ends: 123 [2024-10-11 17:57:57,168 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 571 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=232, Invalid=1660, Unknown=0, NotChecked=0, Total=1892 [2024-10-11 17:57:57,168 INFO L432 NwaCegarLoop]: 52 mSDtfsCounter, 158 mSDsluCounter, 234 mSDsCounter, 0 mSdLazyCounter, 311 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 158 SdHoareTripleChecker+Valid, 286 SdHoareTripleChecker+Invalid, 314 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 311 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:57,168 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [158 Valid, 286 Invalid, 314 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 311 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-10-11 17:57:57,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2024-10-11 17:57:57,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 85. [2024-10-11 17:57:57,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 53 states have (on average 1.6981132075471699) internal successors, (90), 81 states have internal predecessors, (90), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:57,171 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 95 transitions. [2024-10-11 17:57:57,171 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 95 transitions. Word has length 39 [2024-10-11 17:57:57,171 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:57,171 INFO L471 AbstractCegarLoop]: Abstraction has 85 states and 95 transitions. [2024-10-11 17:57:57,171 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 2.8) internal successors, (28), 11 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2024-10-11 17:57:57,172 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 95 transitions. [2024-10-11 17:57:57,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2024-10-11 17:57:57,172 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:57,172 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:57,186 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2024-10-11 17:57:57,376 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2024-10-11 17:57:57,377 INFO L396 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:57,377 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:57,377 INFO L85 PathProgramCache]: Analyzing trace with hash -1726955922, now seen corresponding path program 1 times [2024-10-11 17:57:57,377 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:57,377 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664657103] [2024-10-11 17:57:57,377 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:57,377 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:57,393 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,461 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:57,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,465 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:57,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,473 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2024-10-11 17:57:57,474 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:57,474 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664657103] [2024-10-11 17:57:57,474 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664657103] provided 1 perfect and 0 imperfect interpolant sequences [2024-10-11 17:57:57,474 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-10-11 17:57:57,474 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2024-10-11 17:57:57,474 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [423510827] [2024-10-11 17:57:57,474 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-10-11 17:57:57,474 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2024-10-11 17:57:57,475 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-10-11 17:57:57,475 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2024-10-11 17:57:57,475 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2024-10-11 17:57:57,475 INFO L87 Difference]: Start difference. First operand 85 states and 95 transitions. Second operand has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:57,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-10-11 17:57:57,583 INFO L93 Difference]: Finished difference Result 84 states and 93 transitions. [2024-10-11 17:57:57,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-10-11 17:57:57,583 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 39 [2024-10-11 17:57:57,583 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-10-11 17:57:57,584 INFO L225 Difference]: With dead ends: 84 [2024-10-11 17:57:57,584 INFO L226 Difference]: Without dead ends: 84 [2024-10-11 17:57:57,584 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-10-11 17:57:57,584 INFO L432 NwaCegarLoop]: 58 mSDtfsCounter, 13 mSDsluCounter, 142 mSDsCounter, 0 mSdLazyCounter, 182 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 182 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-10-11 17:57:57,585 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 200 Invalid, 182 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 182 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-10-11 17:57:57,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2024-10-11 17:57:57,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2024-10-11 17:57:57,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 53 states have (on average 1.6603773584905661) internal successors, (88), 80 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2024-10-11 17:57:57,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 93 transitions. [2024-10-11 17:57:57,587 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 93 transitions. Word has length 39 [2024-10-11 17:57:57,587 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-10-11 17:57:57,587 INFO L471 AbstractCegarLoop]: Abstraction has 84 states and 93 transitions. [2024-10-11 17:57:57,587 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.6) internal successors, (28), 5 states have internal predecessors, (28), 1 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2024-10-11 17:57:57,587 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 93 transitions. [2024-10-11 17:57:57,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2024-10-11 17:57:57,588 INFO L207 NwaCegarLoop]: Found error trace [2024-10-11 17:57:57,588 INFO L215 NwaCegarLoop]: trace histogram [4, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-10-11 17:57:57,588 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2024-10-11 17:57:57,588 INFO L396 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [calloc_modelErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, calloc_modelErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 43 more)] === [2024-10-11 17:57:57,589 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-10-11 17:57:57,589 INFO L85 PathProgramCache]: Analyzing trace with hash -1996023528, now seen corresponding path program 1 times [2024-10-11 17:57:57,589 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-10-11 17:57:57,589 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1809693970] [2024-10-11 17:57:57,589 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:57,589 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-10-11 17:57:57,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,946 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2024-10-11 17:57:57,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:57,950 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2024-10-11 17:57:57,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,397 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 8 proven. 10 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2024-10-11 17:57:58,398 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-10-11 17:57:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1809693970] [2024-10-11 17:57:58,398 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1809693970] provided 0 perfect and 1 imperfect interpolant sequences [2024-10-11 17:57:58,398 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [270469160] [2024-10-11 17:57:58,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-10-11 17:57:58,398 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-10-11 17:57:58,399 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 [2024-10-11 17:57:58,400 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-10-11 17:57:58,401 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate-clean/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2024-10-11 17:57:58,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-10-11 17:57:58,530 INFO L255 TraceCheckSpWp]: Trace formula consists of 392 conjuncts, 49 conjuncts are in the unsatisfiable core [2024-10-11 17:57:58,536 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-10-11 17:57:58,922 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 1 [2024-10-11 17:57:59,025 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 15 [2024-10-11 17:57:59,049 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:59,055 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 1 [2024-10-11 17:57:59,220 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:59,223 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 27 treesize of output 19 [2024-10-11 17:57:59,226 INFO L173 IndexEqualityManager]: detected equality via solver [2024-10-11 17:57:59,226 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 21 [2024-10-11 17:57:59,251 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2024-10-11 17:57:59,269 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2024-10-11 17:57:59,270 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-10-11 17:57:59,373 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 68 treesize of output 64 [2024-10-11 17:57:59,380 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 133 treesize of output 121 [2024-10-11 17:58:12,128 INFO L349 Elim1Store]: treesize reduction 11, result has 89.5 percent of original size [2024-10-11 17:58:12,129 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 384 treesize of output 447