./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 023d838f Calling Ultimate with: /root/.sdkman/candidates/java/11.0.12-open/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0235-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 --- Real Ultimate output --- This is Ultimate 0.2.5-tmp.fs.icfgbuilder-eval-023d838-m [2024-11-10 15:11:17,078 INFO L188 SettingsManager]: Resetting all preferences to default values... [2024-11-10 15:11:17,139 INFO L114 SettingsManager]: Loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2024-11-10 15:11:17,143 WARN L101 SettingsManager]: Preference file contains the following unknown settings: [2024-11-10 15:11:17,145 WARN L103 SettingsManager]: * de.uni_freiburg.informatik.ultimate.core.Log level for class [2024-11-10 15:11:17,177 INFO L130 SettingsManager]: Preferences different from defaults after loading the file: [2024-11-10 15:11:17,178 INFO L151 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2024-11-10 15:11:17,178 INFO L153 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2024-11-10 15:11:17,179 INFO L151 SettingsManager]: Preferences of Boogie Preprocessor differ from their defaults: [2024-11-10 15:11:17,179 INFO L153 SettingsManager]: * Use memory slicer=true [2024-11-10 15:11:17,179 INFO L151 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2024-11-10 15:11:17,180 INFO L153 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2024-11-10 15:11:17,180 INFO L151 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2024-11-10 15:11:17,181 INFO L153 SettingsManager]: * Create parallel compositions if possible=false [2024-11-10 15:11:17,181 INFO L153 SettingsManager]: * Use SBE=true [2024-11-10 15:11:17,181 INFO L151 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2024-11-10 15:11:17,182 INFO L153 SettingsManager]: * sizeof long=4 [2024-11-10 15:11:17,182 INFO L153 SettingsManager]: * Overapproximate operations on floating types=true [2024-11-10 15:11:17,182 INFO L153 SettingsManager]: * sizeof POINTER=4 [2024-11-10 15:11:17,183 INFO L153 SettingsManager]: * Check division by zero=IGNORE [2024-11-10 15:11:17,183 INFO L153 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2024-11-10 15:11:17,184 INFO L153 SettingsManager]: * Bitprecise bitfields=true [2024-11-10 15:11:17,184 INFO L153 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2024-11-10 15:11:17,185 INFO L153 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2024-11-10 15:11:17,185 INFO L153 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2024-11-10 15:11:17,185 INFO L153 SettingsManager]: * Allow undefined functions=false [2024-11-10 15:11:17,186 INFO L153 SettingsManager]: * Check unreachability of reach_error function=false [2024-11-10 15:11:17,186 INFO L153 SettingsManager]: * sizeof long double=12 [2024-11-10 15:11:17,186 INFO L153 SettingsManager]: * Use constant arrays=true [2024-11-10 15:11:17,186 INFO L151 SettingsManager]: Preferences of IcfgBuilder differ from their defaults: [2024-11-10 15:11:17,187 INFO L153 SettingsManager]: * Size of a code block=SequenceOfStatements [2024-11-10 15:11:17,187 INFO L153 SettingsManager]: * Only consider context switches at boundaries of atomic blocks=true [2024-11-10 15:11:17,187 INFO L153 SettingsManager]: * SMT solver=External_DefaultMode [2024-11-10 15:11:17,188 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:11:17,188 INFO L151 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2024-11-10 15:11:17,188 INFO L153 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2024-11-10 15:11:17,189 INFO L153 SettingsManager]: * Trace refinement strategy=CAMEL [2024-11-10 15:11:17,189 INFO L153 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2024-11-10 15:11:17,189 INFO L153 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2024-11-10 15:11:17,189 INFO L153 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2024-11-10 15:11:17,190 INFO L153 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2024-11-10 15:11:17,190 INFO L153 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2024-11-10 15:11:17,190 INFO L153 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 02c65307022e35fe6a7161faa785e5b34e94ccda4b82967e279eadaf3aa37bc3 [2024-11-10 15:11:17,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2024-11-10 15:11:17,433 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2024-11-10 15:11:17,438 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2024-11-10 15:11:17,439 INFO L270 PluginConnector]: Initializing CDTParser... [2024-11-10 15:11:17,439 INFO L274 PluginConnector]: CDTParser initialized [2024-11-10 15:11:17,440 INFO L431 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-3.i [2024-11-10 15:11:18,802 INFO L533 CDTParser]: Created temporary CDT project at NULL [2024-11-10 15:11:19,039 INFO L384 CDTParser]: Found 1 translation units. [2024-11-10 15:11:19,040 INFO L180 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-3.i [2024-11-10 15:11:19,053 INFO L427 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6711c47b2/16cf0c518e8f49a88dd1e4706646d278/FLAGd24a3c1b6 [2024-11-10 15:11:19,067 INFO L435 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6711c47b2/16cf0c518e8f49a88dd1e4706646d278 [2024-11-10 15:11:19,070 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2024-11-10 15:11:19,071 INFO L133 ToolchainWalker]: Walking toolchain with 6 elements. [2024-11-10 15:11:19,072 INFO L112 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2024-11-10 15:11:19,072 INFO L270 PluginConnector]: Initializing CACSL2BoogieTranslator... [2024-11-10 15:11:19,077 INFO L274 PluginConnector]: CACSL2BoogieTranslator initialized [2024-11-10 15:11:19,078 INFO L184 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,078 INFO L204 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5182f54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19, skipping insertion in model container [2024-11-10 15:11:19,079 INFO L184 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,127 INFO L175 MainTranslator]: Built tables and reachable declarations [2024-11-10 15:11:19,467 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:11:19,476 INFO L200 MainTranslator]: Completed pre-run [2024-11-10 15:11:19,549 INFO L210 PostProcessor]: Analyzing one entry point: main [2024-11-10 15:11:19,599 INFO L204 MainTranslator]: Completed translation [2024-11-10 15:11:19,599 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19 WrapperNode [2024-11-10 15:11:19,599 INFO L131 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2024-11-10 15:11:19,600 INFO L112 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2024-11-10 15:11:19,601 INFO L270 PluginConnector]: Initializing Boogie Procedure Inliner... [2024-11-10 15:11:19,601 INFO L274 PluginConnector]: Boogie Procedure Inliner initialized [2024-11-10 15:11:19,607 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,631 INFO L184 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,672 INFO L138 Inliner]: procedures = 188, calls = 73, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 236 [2024-11-10 15:11:19,675 INFO L131 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2024-11-10 15:11:19,677 INFO L112 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2024-11-10 15:11:19,677 INFO L270 PluginConnector]: Initializing Boogie Preprocessor... [2024-11-10 15:11:19,677 INFO L274 PluginConnector]: Boogie Preprocessor initialized [2024-11-10 15:11:19,687 INFO L184 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,688 INFO L184 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,692 INFO L184 PluginConnector]: Executing the observer MemorySlicer from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,732 INFO L175 MemorySlicer]: Split 39 memory accesses to 3 slices as follows [2, 11, 26]. 67 percent of accesses are in the largest equivalence class. The 3 initializations are split as follows [2, 1, 0]. The 13 writes are split as follows [0, 1, 12]. [2024-11-10 15:11:19,732 INFO L184 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,733 INFO L184 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,750 INFO L184 PluginConnector]: Executing the observer ReplaceArrayAssignments from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,755 INFO L184 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,756 INFO L184 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,758 INFO L184 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,765 INFO L131 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2024-11-10 15:11:19,770 INFO L112 PluginConnector]: ------------------------IcfgBuilder---------------------------- [2024-11-10 15:11:19,770 INFO L270 PluginConnector]: Initializing IcfgBuilder... [2024-11-10 15:11:19,770 INFO L274 PluginConnector]: IcfgBuilder initialized [2024-11-10 15:11:19,771 INFO L184 PluginConnector]: Executing the observer IcfgBuilderObserver from plugin IcfgBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (1/1) ... [2024-11-10 15:11:19,776 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 [2024-11-10 15:11:19,787 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:19,807 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (exit command is (exit), workingDir is null) [2024-11-10 15:11:19,816 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:4000 (1)] Waiting until timeout for monitored process [2024-11-10 15:11:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2024-11-10 15:11:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2024-11-10 15:11:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#0 [2024-11-10 15:11:19,865 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#1 [2024-11-10 15:11:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$#2 [2024-11-10 15:11:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#0 [2024-11-10 15:11:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#1 [2024-11-10 15:11:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$#2 [2024-11-10 15:11:19,866 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2024-11-10 15:11:19,866 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2024-11-10 15:11:19,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2024-11-10 15:11:19,868 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#0 [2024-11-10 15:11:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#1 [2024-11-10 15:11:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$#2 [2024-11-10 15:11:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2024-11-10 15:11:19,869 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2024-11-10 15:11:19,869 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#0 [2024-11-10 15:11:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#1 [2024-11-10 15:11:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int#2 [2024-11-10 15:11:19,870 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2024-11-10 15:11:19,870 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2024-11-10 15:11:20,039 INFO L256 CfgBuilder]: Building ICFG [2024-11-10 15:11:20,041 INFO L286 CfgBuilder]: Building CFG for each procedure with an implementation [2024-11-10 15:11:20,353 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L642: havoc calloc_model_#t~memset~res4#1.base, calloc_model_#t~memset~res4#1.offset; [2024-11-10 15:11:20,527 INFO L1247 $ProcedureCfgBuilder]: dead code at ProgramPoint L788: havoc main_#t~mem39#1.base, main_#t~mem39#1.offset; [2024-11-10 15:11:20,575 INFO L? ?]: Removed 203 outVars from TransFormulas that were not future-live. [2024-11-10 15:11:20,575 INFO L307 CfgBuilder]: Performing block encoding [2024-11-10 15:11:20,601 INFO L331 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2024-11-10 15:11:20,603 INFO L336 CfgBuilder]: Removed 0 assume(true) statements. [2024-11-10 15:11:20,603 INFO L201 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:11:20 BoogieIcfgContainer [2024-11-10 15:11:20,604 INFO L131 PluginConnector]: ------------------------ END IcfgBuilder---------------------------- [2024-11-10 15:11:20,606 INFO L112 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2024-11-10 15:11:20,606 INFO L270 PluginConnector]: Initializing TraceAbstraction... [2024-11-10 15:11:20,610 INFO L274 PluginConnector]: TraceAbstraction initialized [2024-11-10 15:11:20,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.11 03:11:19" (1/3) ... [2024-11-10 15:11:20,611 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669616a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:11:20, skipping insertion in model container [2024-11-10 15:11:20,611 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.11 03:11:19" (2/3) ... [2024-11-10 15:11:20,613 INFO L204 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@669616a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.11 03:11:20, skipping insertion in model container [2024-11-10 15:11:20,613 INFO L184 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.icfgbuilder CFG 10.11 03:11:20" (3/3) ... [2024-11-10 15:11:20,615 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-3.i [2024-11-10 15:11:20,631 INFO L214 ceAbstractionStarter]: Automizer settings: Hoare:None NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2024-11-10 15:11:20,632 INFO L154 ceAbstractionStarter]: Applying trace abstraction to program that has 89 error locations. [2024-11-10 15:11:20,686 INFO L332 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2024-11-10 15:11:20,696 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;@5fc19b9f, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2024-11-10 15:11:20,696 INFO L334 AbstractCegarLoop]: Starting to check reachability of 89 error locations. [2024-11-10 15:11:20,701 INFO L276 IsEmpty]: Start isEmpty. Operand has 252 states, 147 states have (on average 1.8231292517006803) internal successors, (268), 236 states have internal predecessors, (268), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:20,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2024-11-10 15:11:20,712 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:20,712 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2024-11-10 15:11:20,713 INFO L396 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:20,720 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:20,720 INFO L85 PathProgramCache]: Analyzing trace with hash 9695845, now seen corresponding path program 1 times [2024-11-10 15:11:20,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:20,730 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1291849437] [2024-11-10 15:11:20,730 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:20,730 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:20,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:20,876 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:11:20,877 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:20,877 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1291849437] [2024-11-10 15:11:20,877 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1291849437] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:11:20,878 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:11:20,878 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:11:20,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1678345562] [2024-11-10 15:11:20,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:11:20,883 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2024-11-10 15:11:20,884 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:20,923 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2024-11-10 15:11:20,924 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 15:11:20,926 INFO L87 Difference]: Start difference. First operand has 252 states, 147 states have (on average 1.8231292517006803) internal successors, (268), 236 states have internal predecessors, (268), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:11:20,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:20,989 INFO L93 Difference]: Finished difference Result 252 states and 283 transitions. [2024-11-10 15:11:20,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2024-11-10 15:11:20,997 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2024-11-10 15:11:20,998 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:21,006 INFO L225 Difference]: With dead ends: 252 [2024-11-10 15:11:21,006 INFO L226 Difference]: Without dead ends: 249 [2024-11-10 15:11:21,008 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2024-11-10 15:11:21,011 INFO L432 NwaCegarLoop]: 283 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 283 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:21,012 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 283 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2024-11-10 15:11:21,031 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2024-11-10 15:11:21,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2024-11-10 15:11:21,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 249 states, 145 states have (on average 1.7517241379310344) internal successors, (254), 233 states have internal predecessors, (254), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:21,073 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 280 transitions. [2024-11-10 15:11:21,074 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 280 transitions. Word has length 4 [2024-11-10 15:11:21,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:21,075 INFO L471 AbstractCegarLoop]: Abstraction has 249 states and 280 transitions. [2024-11-10 15:11:21,075 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2024-11-10 15:11:21,076 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 280 transitions. [2024-11-10 15:11:21,076 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2024-11-10 15:11:21,076 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:21,076 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2024-11-10 15:11:21,077 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2024-11-10 15:11:21,077 INFO L396 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:21,078 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:21,078 INFO L85 PathProgramCache]: Analyzing trace with hash 727861724, now seen corresponding path program 1 times [2024-11-10 15:11:21,078 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:21,079 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [376501953] [2024-11-10 15:11:21,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:21,079 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:21,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:21,251 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:11:21,251 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:21,252 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [376501953] [2024-11-10 15:11:21,252 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [376501953] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:11:21,252 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:11:21,253 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2024-11-10 15:11:21,253 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2107148951] [2024-11-10 15:11:21,253 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:11:21,254 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2024-11-10 15:11:21,254 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:21,256 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2024-11-10 15:11:21,258 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:11:21,259 INFO L87 Difference]: Start difference. First operand 249 states and 280 transitions. Second operand has 3 states, 2 states have (on average 2.5) 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) [2024-11-10 15:11:21,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:21,435 INFO L93 Difference]: Finished difference Result 248 states and 279 transitions. [2024-11-10 15:11:21,435 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2024-11-10 15:11:21,435 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) 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 [2024-11-10 15:11:21,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:21,437 INFO L225 Difference]: With dead ends: 248 [2024-11-10 15:11:21,437 INFO L226 Difference]: Without dead ends: 248 [2024-11-10 15:11:21,437 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2024-11-10 15:11:21,438 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 5 mSDsluCounter, 182 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 455 SdHoareTripleChecker+Invalid, 97 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:21,439 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 455 Invalid, 97 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 97 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:11:21,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 248 states. [2024-11-10 15:11:21,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 248 to 248. [2024-11-10 15:11:21,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 248 states, 145 states have (on average 1.7448275862068965) internal successors, (253), 232 states have internal predecessors, (253), 13 states have call successors, (13), 2 states have call predecessors, (13), 2 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:21,460 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 279 transitions. [2024-11-10 15:11:21,460 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 279 transitions. Word has length 6 [2024-11-10 15:11:21,460 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:21,460 INFO L471 AbstractCegarLoop]: Abstraction has 248 states and 279 transitions. [2024-11-10 15:11:21,461 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) 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) [2024-11-10 15:11:21,461 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 279 transitions. [2024-11-10 15:11:21,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2024-11-10 15:11:21,461 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:21,462 INFO L215 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:11:21,462 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2024-11-10 15:11:21,462 INFO L396 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:21,463 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:21,463 INFO L85 PathProgramCache]: Analyzing trace with hash 1088877077, now seen corresponding path program 1 times [2024-11-10 15:11:21,463 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:21,463 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [150559315] [2024-11-10 15:11:21,465 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:21,465 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:21,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:11:21,504 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1452430325] [2024-11-10 15:11:21,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:21,504 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:21,504 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:21,506 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:11:21,508 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2024-11-10 15:11:21,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:21,600 INFO L255 TraceCheckSpWp]: Trace formula consists of 83 conjuncts, 24 conjuncts are in the unsatisfiable core [2024-11-10 15:11:21,606 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:11:21,688 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2024-11-10 15:11:21,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2024-11-10 15:11:21,716 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:11:21,716 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:21,719 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [150559315] [2024-11-10 15:11:21,719 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:11:21,720 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1452430325] [2024-11-10 15:11:21,720 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1452430325] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:11:21,720 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:11:21,720 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2024-11-10 15:11:21,720 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216705320] [2024-11-10 15:11:21,720 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:11:21,720 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2024-11-10 15:11:21,721 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:21,722 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2024-11-10 15:11:21,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2024-11-10 15:11:21,723 INFO L87 Difference]: Start difference. First operand 248 states and 279 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-10 15:11:21,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:21,911 INFO L93 Difference]: Finished difference Result 258 states and 289 transitions. [2024-11-10 15:11:21,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2024-11-10 15:11:21,912 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 7 [2024-11-10 15:11:21,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:21,913 INFO L225 Difference]: With dead ends: 258 [2024-11-10 15:11:21,913 INFO L226 Difference]: Without dead ends: 258 [2024-11-10 15:11:21,913 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2024-11-10 15:11:21,916 INFO L432 NwaCegarLoop]: 268 mSDtfsCounter, 13 mSDsluCounter, 464 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 732 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:21,917 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 732 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2024-11-10 15:11:21,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 258 states. [2024-11-10 15:11:21,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 258 to 258. [2024-11-10 15:11:21,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 258 states, 154 states have (on average 1.7077922077922079) internal successors, (263), 241 states have internal predecessors, (263), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:21,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 258 states to 258 states and 289 transitions. [2024-11-10 15:11:21,941 INFO L78 Accepts]: Start accepts. Automaton has 258 states and 289 transitions. Word has length 7 [2024-11-10 15:11:21,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:21,942 INFO L471 AbstractCegarLoop]: Abstraction has 258 states and 289 transitions. [2024-11-10 15:11:21,942 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2024-11-10 15:11:21,942 INFO L276 IsEmpty]: Start isEmpty. Operand 258 states and 289 transitions. [2024-11-10 15:11:21,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2024-11-10 15:11:21,944 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:21,944 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:11:21,962 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2024-11-10 15:11:22,148 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:22,149 INFO L396 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:22,149 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:22,150 INFO L85 PathProgramCache]: Analyzing trace with hash 1457694108, now seen corresponding path program 1 times [2024-11-10 15:11:22,150 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:22,150 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [486114540] [2024-11-10 15:11:22,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:22,150 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:22,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:11:22,261 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [584666444] [2024-11-10 15:11:22,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:22,262 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:22,262 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:22,265 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:11:22,268 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2024-11-10 15:11:22,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:22,475 INFO L255 TraceCheckSpWp]: Trace formula consists of 510 conjuncts, 34 conjuncts are in the unsatisfiable core [2024-11-10 15:11:22,482 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:11:22,549 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-10 15:11:22,587 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:11:22,671 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 54 proven. 0 refuted. 0 times theorem prover too weak. 61 trivial. 0 not checked. [2024-11-10 15:11:22,671 INFO L307 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2024-11-10 15:11:22,672 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:22,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [486114540] [2024-11-10 15:11:22,672 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:11:22,672 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [584666444] [2024-11-10 15:11:22,672 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [584666444] provided 1 perfect and 0 imperfect interpolant sequences [2024-11-10 15:11:22,673 INFO L185 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2024-11-10 15:11:22,673 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2024-11-10 15:11:22,673 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025098945] [2024-11-10 15:11:22,673 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2024-11-10 15:11:22,673 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2024-11-10 15:11:22,674 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:22,675 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2024-11-10 15:11:22,676 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2024-11-10 15:11:22,676 INFO L87 Difference]: Start difference. First operand 258 states and 289 transitions. Second operand has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-10 15:11:22,866 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:22,867 INFO L93 Difference]: Finished difference Result 270 states and 301 transitions. [2024-11-10 15:11:22,867 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2024-11-10 15:11:22,867 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) Word has length 71 [2024-11-10 15:11:22,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:22,869 INFO L225 Difference]: With dead ends: 270 [2024-11-10 15:11:22,869 INFO L226 Difference]: Without dead ends: 260 [2024-11-10 15:11:22,870 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 65 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2024-11-10 15:11:22,871 INFO L432 NwaCegarLoop]: 273 mSDtfsCounter, 6 mSDsluCounter, 999 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 1272 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:22,871 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 1272 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:11:22,872 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 260 states. [2024-11-10 15:11:22,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 260 to 260. [2024-11-10 15:11:22,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 260 states, 156 states have (on average 1.6987179487179487) internal successors, (265), 243 states have internal predecessors, (265), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:22,890 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 260 states to 260 states and 291 transitions. [2024-11-10 15:11:22,890 INFO L78 Accepts]: Start accepts. Automaton has 260 states and 291 transitions. Word has length 71 [2024-11-10 15:11:22,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:22,890 INFO L471 AbstractCegarLoop]: Abstraction has 260 states and 291 transitions. [2024-11-10 15:11:22,891 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 5.0) internal successors, (35), 7 states have internal predecessors, (35), 2 states have call successors, (6), 2 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 1 states have call successors, (5) [2024-11-10 15:11:22,891 INFO L276 IsEmpty]: Start isEmpty. Operand 260 states and 291 transitions. [2024-11-10 15:11:22,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2024-11-10 15:11:22,893 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:22,893 INFO L215 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:11:22,908 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Ended with exit code 0 [2024-11-10 15:11:23,097 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2024-11-10 15:11:23,098 INFO L396 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:23,098 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:23,098 INFO L85 PathProgramCache]: Analyzing trace with hash 1632427688, now seen corresponding path program 1 times [2024-11-10 15:11:23,098 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:23,099 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1869450687] [2024-11-10 15:11:23,099 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:23,099 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:23,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:11:23,311 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [939375129] [2024-11-10 15:11:23,312 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:23,312 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:23,312 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:23,314 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:11:23,315 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2024-11-10 15:11:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:23,567 INFO L255 TraceCheckSpWp]: Trace formula consists of 585 conjuncts, 52 conjuncts are in the unsatisfiable core [2024-11-10 15:11:23,572 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:11:23,641 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 55 proven. 1 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2024-11-10 15:11:23,641 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:11:23,901 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 15 proven. 49 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2024-11-10 15:11:23,901 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:23,901 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1869450687] [2024-11-10 15:11:23,902 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:11:23,902 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [939375129] [2024-11-10 15:11:23,902 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [939375129] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:11:23,902 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:11:23,902 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2024-11-10 15:11:23,902 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2018296762] [2024-11-10 15:11:23,903 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:11:23,903 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2024-11-10 15:11:23,903 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:23,904 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2024-11-10 15:11:23,904 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2024-11-10 15:11:23,904 INFO L87 Difference]: Start difference. First operand 260 states and 291 transitions. Second operand has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-10 15:11:24,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:24,083 INFO L93 Difference]: Finished difference Result 279 states and 311 transitions. [2024-11-10 15:11:24,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2024-11-10 15:11:24,084 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 76 [2024-11-10 15:11:24,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:24,085 INFO L225 Difference]: With dead ends: 279 [2024-11-10 15:11:24,085 INFO L226 Difference]: Without dead ends: 264 [2024-11-10 15:11:24,086 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 155 GetRequests, 142 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=80, Invalid=130, Unknown=0, NotChecked=0, Total=210 [2024-11-10 15:11:24,088 INFO L432 NwaCegarLoop]: 274 mSDtfsCounter, 15 mSDsluCounter, 1071 mSDsCounter, 0 mSdLazyCounter, 91 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 1345 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 91 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:24,088 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 1345 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 91 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2024-11-10 15:11:24,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 264 states. [2024-11-10 15:11:24,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 264 to 264. [2024-11-10 15:11:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 264 states, 160 states have (on average 1.68125) internal successors, (269), 247 states have internal predecessors, (269), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:24,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 264 states to 264 states and 295 transitions. [2024-11-10 15:11:24,104 INFO L78 Accepts]: Start accepts. Automaton has 264 states and 295 transitions. Word has length 76 [2024-11-10 15:11:24,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:24,104 INFO L471 AbstractCegarLoop]: Abstraction has 264 states and 295 transitions. [2024-11-10 15:11:24,104 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 5.3) internal successors, (53), 10 states have internal predecessors, (53), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-10 15:11:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 264 states and 295 transitions. [2024-11-10 15:11:24,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2024-11-10 15:11:24,106 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:24,107 INFO L215 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:11:24,125 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2024-11-10 15:11:24,307 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:24,308 INFO L396 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:24,308 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:24,308 INFO L85 PathProgramCache]: Analyzing trace with hash -2089984356, now seen corresponding path program 2 times [2024-11-10 15:11:24,308 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:24,309 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1780937476] [2024-11-10 15:11:24,309 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:24,309 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:24,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unknown [2024-11-10 15:11:24,526 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451017249] [2024-11-10 15:11:24,528 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2024-11-10 15:11:24,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:24,529 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:24,530 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:11:24,532 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2024-11-10 15:11:24,991 INFO L227 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2024-11-10 15:11:24,992 INFO L228 tOrderPrioritization]: Conjunction of SSA is unsat [2024-11-10 15:11:24,997 INFO L255 TraceCheckSpWp]: Trace formula consists of 810 conjuncts, 89 conjuncts are in the unsatisfiable core [2024-11-10 15:11:25,007 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:11:25,022 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 7 [2024-11-10 15:11:25,053 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2024-11-10 15:11:25,296 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 210 proven. 53 refuted. 0 times theorem prover too weak. 142 trivial. 0 not checked. [2024-11-10 15:11:25,296 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:11:25,768 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 48 proven. 109 refuted. 0 times theorem prover too weak. 248 trivial. 0 not checked. [2024-11-10 15:11:25,769 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:25,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1780937476] [2024-11-10 15:11:25,769 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2024-11-10 15:11:25,769 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451017249] [2024-11-10 15:11:25,769 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451017249] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:11:25,770 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:11:25,770 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 9] total 22 [2024-11-10 15:11:25,770 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760392650] [2024-11-10 15:11:25,770 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:11:25,771 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2024-11-10 15:11:25,771 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:25,771 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2024-11-10 15:11:25,772 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2024-11-10 15:11:25,772 INFO L87 Difference]: Start difference. First operand 264 states and 295 transitions. Second operand has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-10 15:11:38,242 WARN L286 SmtUtils]: Spent 8.09s on a formula simplification. DAG size of input: 39 DAG size of output: 37 (called from [L 388] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2024-11-10 15:11:38,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:38,938 INFO L93 Difference]: Finished difference Result 287 states and 324 transitions. [2024-11-10 15:11:38,939 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2024-11-10 15:11:38,939 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) Word has length 91 [2024-11-10 15:11:38,939 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:38,940 INFO L225 Difference]: With dead ends: 287 [2024-11-10 15:11:38,940 INFO L226 Difference]: Without dead ends: 272 [2024-11-10 15:11:38,941 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 200 GetRequests, 161 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 263 ImplicationChecksByTransitivity, 13.1s TimeCoverageRelationStatistics Valid=400, Invalid=1240, Unknown=0, NotChecked=0, Total=1640 [2024-11-10 15:11:38,942 INFO L432 NwaCegarLoop]: 266 mSDtfsCounter, 49 mSDsluCounter, 2094 mSDsCounter, 0 mSdLazyCounter, 363 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 2360 SdHoareTripleChecker+Invalid, 386 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 363 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:38,942 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 2360 Invalid, 386 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 363 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2024-11-10 15:11:38,943 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 272 states. [2024-11-10 15:11:38,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 272 to 272. [2024-11-10 15:11:38,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 272 states, 169 states have (on average 1.6568047337278107) internal successors, (280), 255 states have internal predecessors, (280), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:38,962 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 306 transitions. [2024-11-10 15:11:38,962 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 306 transitions. Word has length 91 [2024-11-10 15:11:38,963 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:38,963 INFO L471 AbstractCegarLoop]: Abstraction has 272 states and 306 transitions. [2024-11-10 15:11:38,964 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.272727272727273) internal successors, (72), 22 states have internal predecessors, (72), 2 states have call successors, (9), 2 states have call predecessors, (9), 5 states have return successors, (10), 2 states have call predecessors, (10), 2 states have call successors, (10) [2024-11-10 15:11:38,964 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 306 transitions. [2024-11-10 15:11:38,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-10 15:11:38,967 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:38,967 INFO L215 NwaCegarLoop]: trace histogram [42, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:11:38,981 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2024-11-10 15:11:39,167 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:39,168 INFO L396 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:39,169 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:39,169 INFO L85 PathProgramCache]: Analyzing trace with hash -1637706819, now seen corresponding path program 1 times [2024-11-10 15:11:39,169 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:39,169 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1717965802] [2024-11-10 15:11:39,169 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:39,169 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,013 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 15:11:40,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,037 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 15:11:40,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,066 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-10 15:11:40,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,088 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 15:11:40,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,113 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-10 15:11:40,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,294 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-10 15:11:40,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,429 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 496 proven. 35 refuted. 0 times theorem prover too weak. 732 trivial. 0 not checked. [2024-11-10 15:11:40,430 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1717965802] [2024-11-10 15:11:40,430 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1717965802] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:11:40,430 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1641615560] [2024-11-10 15:11:40,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:40,430 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:40,430 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:40,433 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:11:40,434 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2024-11-10 15:11:40,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:40,802 INFO L255 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 22 conjuncts are in the unsatisfiable core [2024-11-10 15:11:40,806 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:11:40,895 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (= (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| 1) |c_#valid|)) is different from true [2024-11-10 15:11:40,933 INFO L349 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2024-11-10 15:11:40,934 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 [2024-11-10 15:11:40,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 501 proven. 1 refuted. 0 times theorem prover too weak. 727 trivial. 34 not checked. [2024-11-10 15:11:40,945 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:11:41,189 INFO L349 Elim1Store]: treesize reduction 5, result has 37.5 percent of original size [2024-11-10 15:11:41,189 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 12 treesize of output 11 [2024-11-10 15:11:41,213 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 501 proven. 35 refuted. 0 times theorem prover too weak. 727 trivial. 0 not checked. [2024-11-10 15:11:41,217 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1641615560] provided 0 perfect and 2 imperfect interpolant sequences [2024-11-10 15:11:41,217 INFO L185 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2024-11-10 15:11:41,217 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11, 10] total 17 [2024-11-10 15:11:41,217 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1174349147] [2024-11-10 15:11:41,217 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2024-11-10 15:11:41,218 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2024-11-10 15:11:41,218 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:11:41,218 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2024-11-10 15:11:41,219 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=224, Unknown=1, NotChecked=30, Total=306 [2024-11-10 15:11:41,219 INFO L87 Difference]: Start difference. First operand 272 states and 306 transitions. Second operand has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-10 15:11:42,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2024-11-10 15:11:42,839 INFO L93 Difference]: Finished difference Result 382 states and 437 transitions. [2024-11-10 15:11:42,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2024-11-10 15:11:42,840 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) Word has length 121 [2024-11-10 15:11:42,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2024-11-10 15:11:42,843 INFO L225 Difference]: With dead ends: 382 [2024-11-10 15:11:42,844 INFO L226 Difference]: Without dead ends: 382 [2024-11-10 15:11:42,844 INFO L431 NwaCegarLoop]: 0 DeclaredPredicates, 266 GetRequests, 242 SyntacticMatches, 4 SemanticMatches, 20 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=79, Invalid=344, Unknown=1, NotChecked=38, Total=462 [2024-11-10 15:11:42,846 INFO L432 NwaCegarLoop]: 131 mSDtfsCounter, 377 mSDsluCounter, 1088 mSDsCounter, 0 mSdLazyCounter, 2139 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 377 SdHoareTripleChecker+Valid, 1219 SdHoareTripleChecker+Invalid, 2562 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 2139 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 400 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2024-11-10 15:11:42,847 INFO L433 NwaCegarLoop]: SdHoareTripleChecker [377 Valid, 1219 Invalid, 2562 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 2139 Invalid, 0 Unknown, 400 Unchecked, 1.4s Time] [2024-11-10 15:11:42,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 382 states. [2024-11-10 15:11:42,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 382 to 270. [2024-11-10 15:11:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 270 states, 169 states have (on average 1.6449704142011834) internal successors, (278), 253 states have internal predecessors, (278), 13 states have call successors, (13), 3 states have call predecessors, (13), 3 states have return successors, (13), 13 states have call predecessors, (13), 13 states have call successors, (13) [2024-11-10 15:11:42,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 304 transitions. [2024-11-10 15:11:42,863 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 304 transitions. Word has length 121 [2024-11-10 15:11:42,865 INFO L84 Accepts]: Finished accepts. word is rejected. [2024-11-10 15:11:42,865 INFO L471 AbstractCegarLoop]: Abstraction has 270 states and 304 transitions. [2024-11-10 15:11:42,865 INFO L472 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 4.176470588235294) internal successors, (71), 15 states have internal predecessors, (71), 2 states have call successors, (13), 4 states have call predecessors, (13), 5 states have return successors, (8), 3 states have call predecessors, (8), 2 states have call successors, (8) [2024-11-10 15:11:42,866 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 304 transitions. [2024-11-10 15:11:42,867 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2024-11-10 15:11:42,868 INFO L207 NwaCegarLoop]: Found error trace [2024-11-10 15:11:42,868 INFO L215 NwaCegarLoop]: trace histogram [42, 6, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2024-11-10 15:11:42,890 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Ended with exit code 0 [2024-11-10 15:11:43,072 WARN L453 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:43,073 INFO L396 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [l0_destroyErr0ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr1ASSERT_VIOLATIONMEMORY_FREE, l0_destroyErr2ASSERT_VIOLATIONMEMORY_FREE (and 86 more)] === [2024-11-10 15:11:43,073 INFO L157 PredicateUnifier]: Initialized classic predicate unifier [2024-11-10 15:11:43,073 INFO L85 PathProgramCache]: Analyzing trace with hash -1637706818, now seen corresponding path program 1 times [2024-11-10 15:11:43,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2024-11-10 15:11:43,074 INFO L334 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2066051691] [2024-11-10 15:11:43,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:43,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2024-11-10 15:11:43,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:44,712 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2024-11-10 15:11:44,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:44,734 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2024-11-10 15:11:44,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:44,755 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2024-11-10 15:11:44,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:44,775 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 66 [2024-11-10 15:11:44,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:44,801 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2024-11-10 15:11:44,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:45,784 INFO L368 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 107 [2024-11-10 15:11:45,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:45,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 496 proven. 71 refuted. 0 times theorem prover too weak. 696 trivial. 0 not checked. [2024-11-10 15:11:45,976 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2024-11-10 15:11:45,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2066051691] [2024-11-10 15:11:45,976 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2066051691] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:11:45,976 INFO L334 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1750671237] [2024-11-10 15:11:45,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2024-11-10 15:11:45,977 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2024-11-10 15:11:45,977 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2024-11-10 15:11:45,978 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2024-11-10 15:11:45,980 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2024-11-10 15:11:46,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2024-11-10 15:11:46,665 INFO L255 TraceCheckSpWp]: Trace formula consists of 1171 conjuncts, 102 conjuncts are in the unsatisfiable core [2024-11-10 15:11:46,673 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2024-11-10 15:11:46,967 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 1 [2024-11-10 15:12:26,898 WARN L873 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| (select |c_#length| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) |c_#length|) (= (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|) 0))) is different from true [2024-11-10 15:12:26,967 INFO L190 IndexEqualityManager]: detected not equals via solver [2024-11-10 15:12:26,968 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 9 [2024-11-10 15:12:26,980 INFO L349 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2024-11-10 15:12:26,980 INFO L378 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2024-11-10 15:12:26,982 INFO L134 CoverageAnalysis]: Checked inductivity of 1263 backedges. 405 proven. 516 refuted. 0 times theorem prover too weak. 259 trivial. 83 not checked. [2024-11-10 15:12:26,982 INFO L311 TraceCheckSpWp]: Computing backward predicates... [2024-11-10 15:12:27,212 INFO L158 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1750671237] provided 0 perfect and 1 imperfect interpolant sequences [2024-11-10 15:12:27,213 INFO L185 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2024-11-10 15:12:27,213 INFO L198 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 29] total 43 [2024-11-10 15:12:27,213 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778847681] [2024-11-10 15:12:27,213 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2024-11-10 15:12:27,213 INFO L548 AbstractCegarLoop]: INTERPOLANT automaton has 44 states [2024-11-10 15:12:27,213 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2024-11-10 15:12:27,214 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 44 interpolants. [2024-11-10 15:12:27,215 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=1832, Unknown=10, NotChecked=86, Total=2070 [2024-11-10 15:12:27,215 INFO L87 Difference]: Start difference. First operand 270 states and 304 transitions. Second operand has 44 states, 42 states have (on average 2.0) internal successors, (84), 40 states have internal predecessors, (84), 2 states have call successors, (12), 3 states have call predecessors, (12), 4 states have return successors, (7), 3 states have call predecessors, (7), 2 states have call successors, (7) [2024-11-10 15:12:31,276 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.03s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:12:37,876 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:12:42,011 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:12:46,029 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2024-11-10 15:12:50,121 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 4.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0]