./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-simple/sll2c_append_equal.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 26d01a9c Calling Ultimate with: /usr/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/list-simple/sll2c_append_equal.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.graphml --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 b335af75f55d322161e6a270bf4669ab290ae0e9da4bc480724c7d5e3b79fdab --- Real Ultimate output --- This is Ultimate 0.2.2-?-26d01a9 [2023-02-17 03:25:51,702 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-17 03:25:51,704 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-17 03:25:51,737 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-17 03:25:51,737 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-17 03:25:51,740 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-17 03:25:51,741 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-17 03:25:51,743 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-17 03:25:51,745 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-17 03:25:51,748 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-17 03:25:51,749 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-17 03:25:51,751 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-17 03:25:51,751 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-17 03:25:51,753 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-17 03:25:51,754 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-17 03:25:51,755 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-17 03:25:51,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-17 03:25:51,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-17 03:25:51,757 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-17 03:25:51,761 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-17 03:25:51,762 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-17 03:25:51,762 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-17 03:25:51,763 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-17 03:25:51,764 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-17 03:25:51,770 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-17 03:25:51,770 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-17 03:25:51,770 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-17 03:25:51,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-17 03:25:51,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-17 03:25:51,772 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-17 03:25:51,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-17 03:25:51,774 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-17 03:25:51,775 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-17 03:25:51,775 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-17 03:25:51,776 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-17 03:25:51,776 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-17 03:25:51,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-17 03:25:51,777 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-17 03:25:51,777 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-17 03:25:51,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-17 03:25:51,778 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-17 03:25:51,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-17 03:25:51,804 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-17 03:25:51,804 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-17 03:25:51,805 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-17 03:25:51,805 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-17 03:25:51,805 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-17 03:25:51,806 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-17 03:25:51,806 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-17 03:25:51,806 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-17 03:25:51,806 INFO L138 SettingsManager]: * Use SBE=true [2023-02-17 03:25:51,806 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-17 03:25:51,807 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-17 03:25:51,807 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-17 03:25:51,807 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-17 03:25:51,807 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-17 03:25:51,808 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-17 03:25:51,809 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-17 03:25:51,809 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-17 03:25:51,809 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-17 03:25:51,809 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:25:51,809 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-17 03:25:51,809 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-17 03:25:51,810 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-17 03:25:51,810 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-17 03:25:51,810 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-17 03:25:51,810 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-17 03:25:51,811 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-17 03:25:51,811 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-17 03:25:51,811 INFO L138 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b335af75f55d322161e6a270bf4669ab290ae0e9da4bc480724c7d5e3b79fdab [2023-02-17 03:25:51,985 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-17 03:25:52,000 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-17 03:25:52,003 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-17 03:25:52,003 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-17 03:25:52,004 INFO L275 PluginConnector]: CDTParser initialized [2023-02-17 03:25:52,005 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-simple/sll2c_append_equal.i [2023-02-17 03:25:53,083 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-17 03:25:53,400 INFO L351 CDTParser]: Found 1 translation units. [2023-02-17 03:25:53,401 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_append_equal.i [2023-02-17 03:25:53,427 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f49c92f47/aa90b62f74e840bfbe544901037fbc88/FLAGcefdef9f7 [2023-02-17 03:25:53,436 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f49c92f47/aa90b62f74e840bfbe544901037fbc88 [2023-02-17 03:25:53,439 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-17 03:25:53,440 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-17 03:25:53,443 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-17 03:25:53,443 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-17 03:25:53,445 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-17 03:25:53,445 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,446 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@713eeb68 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53, skipping insertion in model container [2023-02-17 03:25:53,446 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,451 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-17 03:25:53,481 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-17 03:25:53,720 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_append_equal.i[24433,24446] [2023-02-17 03:25:53,724 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:25:53,732 INFO L203 MainTranslator]: Completed pre-run [2023-02-17 03:25:53,767 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-simple/sll2c_append_equal.i[24433,24446] [2023-02-17 03:25:53,793 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-17 03:25:53,818 INFO L208 MainTranslator]: Completed translation [2023-02-17 03:25:53,818 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53 WrapperNode [2023-02-17 03:25:53,819 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-17 03:25:53,820 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-17 03:25:53,820 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-17 03:25:53,820 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-17 03:25:53,826 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,855 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,889 INFO L138 Inliner]: procedures = 127, calls = 42, calls flagged for inlining = 6, calls inlined = 6, statements flattened = 142 [2023-02-17 03:25:53,889 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-17 03:25:53,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-17 03:25:53,890 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-17 03:25:53,890 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-17 03:25:53,899 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,899 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,917 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,924 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,932 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,934 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,950 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,952 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-17 03:25:53,952 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-17 03:25:53,952 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-17 03:25:53,952 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-17 03:25:53,953 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (1/1) ... [2023-02-17 03:25:53,961 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-17 03:25:53,973 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:25:54,013 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-17 03:25:54,029 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-17 03:25:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-17 03:25:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-17 03:25:54,055 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2023-02-17 03:25:54,055 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2023-02-17 03:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-17 03:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-17 03:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-17 03:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-17 03:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-17 03:25:54,056 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-17 03:25:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-17 03:25:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-17 03:25:54,057 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-17 03:25:54,057 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-17 03:25:54,183 INFO L235 CfgBuilder]: Building ICFG [2023-02-17 03:25:54,185 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-17 03:25:54,414 INFO L276 CfgBuilder]: Performing block encoding [2023-02-17 03:25:54,419 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-17 03:25:54,419 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2023-02-17 03:25:54,421 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:25:54 BoogieIcfgContainer [2023-02-17 03:25:54,421 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-17 03:25:54,422 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-17 03:25:54,423 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-17 03:25:54,425 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-17 03:25:54,425 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.02 03:25:53" (1/3) ... [2023-02-17 03:25:54,427 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7235d003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:25:54, skipping insertion in model container [2023-02-17 03:25:54,428 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.02 03:25:53" (2/3) ... [2023-02-17 03:25:54,428 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7235d003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.02 03:25:54, skipping insertion in model container [2023-02-17 03:25:54,429 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.02 03:25:54" (3/3) ... [2023-02-17 03:25:54,430 INFO L112 eAbstractionObserver]: Analyzing ICFG sll2c_append_equal.i [2023-02-17 03:25:54,443 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-17 03:25:54,443 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 50 error locations. [2023-02-17 03:25:54,500 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-17 03:25:54,506 INFO L357 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, mHoare=false, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, 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;@ea8c149, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-17 03:25:54,506 INFO L358 AbstractCegarLoop]: Starting to check reachability of 50 error locations. [2023-02-17 03:25:54,509 INFO L276 IsEmpty]: Start isEmpty. Operand has 116 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 111 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:54,513 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 03:25:54,514 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:54,514 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 03:25:54,515 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting node_createErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:54,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:54,522 INFO L85 PathProgramCache]: Analyzing trace with hash 895059861, now seen corresponding path program 1 times [2023-02-17 03:25:54,540 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:54,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1360923138] [2023-02-17 03:25:54,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:54,541 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:54,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:54,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:25:54,807 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:54,807 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1360923138] [2023-02-17 03:25:54,808 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1360923138] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:25:54,808 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:25:54,808 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:25:54,809 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1676656763] [2023-02-17 03:25:54,810 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:25:54,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:25:54,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:54,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:25:54,838 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:25:54,840 INFO L87 Difference]: Start difference. First operand has 116 states, 61 states have (on average 2.0327868852459017) internal successors, (124), 111 states have internal predecessors, (124), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) 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) [2023-02-17 03:25:54,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:54,961 INFO L93 Difference]: Finished difference Result 114 states and 123 transitions. [2023-02-17 03:25:54,962 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:25:54,963 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 [2023-02-17 03:25:54,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:54,969 INFO L225 Difference]: With dead ends: 114 [2023-02-17 03:25:54,969 INFO L226 Difference]: Without dead ends: 111 [2023-02-17 03:25:54,970 INFO L412 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 [2023-02-17 03:25:54,974 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 8 mSDsluCounter, 63 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 179 SdHoareTripleChecker+Invalid, 58 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:54,975 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 179 Invalid, 58 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:25:54,987 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2023-02-17 03:25:55,005 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2023-02-17 03:25:55,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 59 states have (on average 1.9152542372881356) internal successors, (113), 106 states have internal predecessors, (113), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:55,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 119 transitions. [2023-02-17 03:25:55,012 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 119 transitions. Word has length 6 [2023-02-17 03:25:55,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:55,013 INFO L495 AbstractCegarLoop]: Abstraction has 111 states and 119 transitions. [2023-02-17 03:25:55,013 INFO L496 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) [2023-02-17 03:25:55,013 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 119 transitions. [2023-02-17 03:25:55,014 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-17 03:25:55,014 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:55,014 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-17 03:25:55,014 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-17 03:25:55,015 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting node_createErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:55,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:55,015 INFO L85 PathProgramCache]: Analyzing trace with hash 895059862, now seen corresponding path program 1 times [2023-02-17 03:25:55,015 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:55,016 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [87644726] [2023-02-17 03:25:55,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:55,016 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:55,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,144 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:25:55,144 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:55,145 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [87644726] [2023-02-17 03:25:55,145 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [87644726] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:25:55,146 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:25:55,146 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-17 03:25:55,147 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [463654922] [2023-02-17 03:25:55,147 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:25:55,148 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-17 03:25:55,148 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:55,149 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-17 03:25:55,149 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-17 03:25:55,149 INFO L87 Difference]: Start difference. First operand 111 states and 119 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) [2023-02-17 03:25:55,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:55,236 INFO L93 Difference]: Finished difference Result 109 states and 117 transitions. [2023-02-17 03:25:55,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-17 03:25:55,237 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 [2023-02-17 03:25:55,238 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:55,241 INFO L225 Difference]: With dead ends: 109 [2023-02-17 03:25:55,242 INFO L226 Difference]: Without dead ends: 109 [2023-02-17 03:25:55,245 INFO L412 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 [2023-02-17 03:25:55,248 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 4 mSDsluCounter, 68 mSDsCounter, 0 mSdLazyCounter, 47 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 181 SdHoareTripleChecker+Invalid, 48 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 47 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:55,248 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [4 Valid, 181 Invalid, 48 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 47 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:25:55,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-17 03:25:55,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 109. [2023-02-17 03:25:55,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 59 states have (on average 1.88135593220339) internal successors, (111), 104 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:55,258 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2023-02-17 03:25:55,261 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 6 [2023-02-17 03:25:55,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:55,261 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2023-02-17 03:25:55,261 INFO L496 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) [2023-02-17 03:25:55,262 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2023-02-17 03:25:55,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-17 03:25:55,263 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:55,263 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:25:55,263 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-17 03:25:55,264 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:55,264 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:55,264 INFO L85 PathProgramCache]: Analyzing trace with hash 100467671, now seen corresponding path program 1 times [2023-02-17 03:25:55,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:55,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [934240044] [2023-02-17 03:25:55,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:55,274 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:55,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,324 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:25:55,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,338 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:25:55,339 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:55,339 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [934240044] [2023-02-17 03:25:55,339 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [934240044] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:25:55,339 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:25:55,340 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-17 03:25:55,340 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [797399684] [2023-02-17 03:25:55,340 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:25:55,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-17 03:25:55,340 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:55,341 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-17 03:25:55,341 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:25:55,342 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:25:55,421 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:55,421 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2023-02-17 03:25:55,421 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-17 03:25:55,422 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2023-02-17 03:25:55,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:55,422 INFO L225 Difference]: With dead ends: 116 [2023-02-17 03:25:55,423 INFO L226 Difference]: Without dead ends: 116 [2023-02-17 03:25:55,423 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-17 03:25:55,424 INFO L413 NwaCegarLoop]: 115 mSDtfsCounter, 5 mSDsluCounter, 154 mSDsCounter, 0 mSdLazyCounter, 78 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 269 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 78 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:55,424 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 269 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 78 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:25:55,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-17 03:25:55,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 110. [2023-02-17 03:25:55,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 60 states have (on average 1.8666666666666667) internal successors, (112), 105 states have internal predecessors, (112), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:55,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 118 transitions. [2023-02-17 03:25:55,437 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 118 transitions. Word has length 13 [2023-02-17 03:25:55,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:55,438 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 118 transitions. [2023-02-17 03:25:55,438 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.75) internal successors, (11), 3 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2023-02-17 03:25:55,438 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 118 transitions. [2023-02-17 03:25:55,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 03:25:55,439 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:55,439 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:25:55,439 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-17 03:25:55,439 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:55,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:55,440 INFO L85 PathProgramCache]: Analyzing trace with hash -900354020, now seen corresponding path program 1 times [2023-02-17 03:25:55,440 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:55,440 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [113034958] [2023-02-17 03:25:55,440 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:55,440 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:55,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,593 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:25:55,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,601 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:25:55,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,645 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:25:55,646 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:55,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [113034958] [2023-02-17 03:25:55,647 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [113034958] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:25:55,647 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:25:55,647 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:25:55,647 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [733730807] [2023-02-17 03:25:55,647 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:25:55,648 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:25:55,648 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:55,649 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:25:55,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:25:55,649 INFO L87 Difference]: Start difference. First operand 110 states and 118 transitions. Second operand has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:25:55,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:55,829 INFO L93 Difference]: Finished difference Result 110 states and 119 transitions. [2023-02-17 03:25:55,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:25:55,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-02-17 03:25:55,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:55,831 INFO L225 Difference]: With dead ends: 110 [2023-02-17 03:25:55,832 INFO L226 Difference]: Without dead ends: 110 [2023-02-17 03:25:55,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:25:55,833 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 13 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 309 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 380 SdHoareTripleChecker+Invalid, 311 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 309 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:55,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [13 Valid, 380 Invalid, 311 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 309 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:25:55,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2023-02-17 03:25:55,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 109. [2023-02-17 03:25:55,837 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 60 states have (on average 1.85) internal successors, (111), 104 states have internal predecessors, (111), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:55,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2023-02-17 03:25:55,838 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 22 [2023-02-17 03:25:55,838 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:55,838 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2023-02-17 03:25:55,838 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:25:55,838 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2023-02-17 03:25:55,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-17 03:25:55,839 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:55,839 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:25:55,839 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-17 03:25:55,839 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:55,840 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:55,840 INFO L85 PathProgramCache]: Analyzing trace with hash -900354019, now seen corresponding path program 1 times [2023-02-17 03:25:55,840 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:55,840 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [145364324] [2023-02-17 03:25:55,840 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:55,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:55,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,924 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:25:55,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,931 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:25:55,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:55,989 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 6 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:25:55,990 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:55,990 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [145364324] [2023-02-17 03:25:55,990 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [145364324] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:25:55,990 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:25:55,990 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:25:55,990 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [594477659] [2023-02-17 03:25:55,991 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:25:55,991 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:25:55,991 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:55,992 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:25:55,992 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:25:55,992 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:25:56,149 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:56,149 INFO L93 Difference]: Finished difference Result 109 states and 118 transitions. [2023-02-17 03:25:56,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:25:56,150 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 22 [2023-02-17 03:25:56,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:56,150 INFO L225 Difference]: With dead ends: 109 [2023-02-17 03:25:56,150 INFO L226 Difference]: Without dead ends: 109 [2023-02-17 03:25:56,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:25:56,151 INFO L413 NwaCegarLoop]: 108 mSDtfsCounter, 11 mSDsluCounter, 296 mSDsCounter, 0 mSdLazyCounter, 280 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 281 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:56,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 404 Invalid, 281 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 280 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:25:56,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2023-02-17 03:25:56,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 108. [2023-02-17 03:25:56,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 60 states have (on average 1.8333333333333333) internal successors, (110), 103 states have internal predecessors, (110), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:56,155 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 116 transitions. [2023-02-17 03:25:56,155 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 116 transitions. Word has length 22 [2023-02-17 03:25:56,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:56,155 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 116 transitions. [2023-02-17 03:25:56,155 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 5 states have internal predecessors, (18), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2023-02-17 03:25:56,156 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 116 transitions. [2023-02-17 03:25:56,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 03:25:56,156 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:56,156 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:25:56,156 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-17 03:25:56,156 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:56,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:56,157 INFO L85 PathProgramCache]: Analyzing trace with hash -375857467, now seen corresponding path program 1 times [2023-02-17 03:25:56,157 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:56,157 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403238824] [2023-02-17 03:25:56,157 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:56,157 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:56,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:56,274 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:25:56,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:56,297 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:25:56,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:56,341 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-17 03:25:56,341 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:56,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [403238824] [2023-02-17 03:25:56,342 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [403238824] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:25:56,342 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [64322355] [2023-02-17 03:25:56,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:56,342 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:25:56,342 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:25:56,345 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) [2023-02-17 03:25:56,346 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-17 03:25:56,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:56,428 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 23 conjunts are in the unsatisfiable core [2023-02-17 03:25:56,432 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:25:56,461 INFO L350 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 [2023-02-17 03:25:56,479 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_256 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_256))) is different from true [2023-02-17 03:25:56,487 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_256 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_256))) is different from true [2023-02-17 03:25:56,493 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:25:56,493 INFO L350 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 28 [2023-02-17 03:25:56,534 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 6 not checked. [2023-02-17 03:25:56,534 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:25:56,633 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 6 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:25:56,633 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [64322355] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-17 03:25:56,633 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-17 03:25:56,633 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 10, 10] total 18 [2023-02-17 03:25:56,633 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1594367019] [2023-02-17 03:25:56,634 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-17 03:25:56,634 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-17 03:25:56,634 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:56,635 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-17 03:25:56,635 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=59, Invalid=219, Unknown=2, NotChecked=62, Total=342 [2023-02-17 03:25:56,635 INFO L87 Difference]: Start difference. First operand 108 states and 116 transitions. Second operand has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 03:25:56,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:56,841 INFO L93 Difference]: Finished difference Result 125 states and 134 transitions. [2023-02-17 03:25:56,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:25:56,842 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) Word has length 25 [2023-02-17 03:25:56,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:56,842 INFO L225 Difference]: With dead ends: 125 [2023-02-17 03:25:56,843 INFO L226 Difference]: Without dead ends: 125 [2023-02-17 03:25:56,843 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 62 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=271, Unknown=2, NotChecked=70, Total=420 [2023-02-17 03:25:56,843 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 94 mSDsluCounter, 342 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 659 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 260 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:56,844 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 406 Invalid, 659 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 394 Invalid, 0 Unknown, 260 Unchecked, 0.2s Time] [2023-02-17 03:25:56,844 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2023-02-17 03:25:56,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 107. [2023-02-17 03:25:56,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 60 states have (on average 1.8166666666666667) internal successors, (109), 102 states have internal predecessors, (109), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:56,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 115 transitions. [2023-02-17 03:25:56,848 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 115 transitions. Word has length 25 [2023-02-17 03:25:56,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:56,848 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 115 transitions. [2023-02-17 03:25:56,848 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 18 states have (on average 2.2222222222222223) internal successors, (40), 13 states have internal predecessors, (40), 2 states have call successors, (5), 4 states have call predecessors, (5), 4 states have return successors, (4), 4 states have call predecessors, (4), 2 states have call successors, (4) [2023-02-17 03:25:56,848 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 115 transitions. [2023-02-17 03:25:56,849 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-17 03:25:56,849 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:56,849 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:25:56,870 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2023-02-17 03:25:57,054 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2023-02-17 03:25:57,055 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:57,055 INFO L85 PathProgramCache]: Analyzing trace with hash -375857466, now seen corresponding path program 1 times [2023-02-17 03:25:57,055 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:57,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [672674459] [2023-02-17 03:25:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:57,056 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:57,086 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:57,266 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:25:57,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:57,335 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:25:57,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:57,380 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-17 03:25:57,380 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:57,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [672674459] [2023-02-17 03:25:57,380 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [672674459] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:25:57,380 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [89372461] [2023-02-17 03:25:57,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:57,380 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:25:57,381 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:25:57,403 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) [2023-02-17 03:25:57,404 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-17 03:25:57,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:57,486 INFO L263 TraceCheckSpWp]: Trace formula consists of 219 conjuncts, 35 conjunts are in the unsatisfiable core [2023-02-17 03:25:57,488 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:25:57,496 INFO L350 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 [2023-02-17 03:25:57,591 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:25:57,591 INFO L350 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 15 [2023-02-17 03:25:57,594 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 13 [2023-02-17 03:25:57,624 INFO L134 CoverageAnalysis]: Checked inductivity of 8 backedges. 1 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-17 03:25:57,624 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:25:57,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [89372461] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:25:57,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:25:57,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 11] total 19 [2023-02-17 03:25:57,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311354978] [2023-02-17 03:25:57,671 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:25:57,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-17 03:25:57,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:57,672 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-17 03:25:57,672 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=65, Invalid=397, Unknown=0, NotChecked=0, Total=462 [2023-02-17 03:25:57,672 INFO L87 Difference]: Start difference. First operand 107 states and 115 transitions. Second operand has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-17 03:25:57,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:57,989 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2023-02-17 03:25:57,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:25:57,990 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) Word has length 25 [2023-02-17 03:25:57,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:57,990 INFO L225 Difference]: With dead ends: 108 [2023-02-17 03:25:57,990 INFO L226 Difference]: Without dead ends: 108 [2023-02-17 03:25:57,991 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=91, Invalid=509, Unknown=0, NotChecked=0, Total=600 [2023-02-17 03:25:57,991 INFO L413 NwaCegarLoop]: 68 mSDtfsCounter, 196 mSDsluCounter, 385 mSDsCounter, 0 mSdLazyCounter, 576 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 196 SdHoareTripleChecker+Valid, 453 SdHoareTripleChecker+Invalid, 587 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 576 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:57,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [196 Valid, 453 Invalid, 587 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 576 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-17 03:25:57,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-17 03:25:57,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 106. [2023-02-17 03:25:57,994 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 106 states, 60 states have (on average 1.8) internal successors, (108), 101 states have internal predecessors, (108), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:57,994 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 114 transitions. [2023-02-17 03:25:57,994 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 114 transitions. Word has length 25 [2023-02-17 03:25:57,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:57,994 INFO L495 AbstractCegarLoop]: Abstraction has 106 states and 114 transitions. [2023-02-17 03:25:57,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 1.9473684210526316) internal successors, (37), 15 states have internal predecessors, (37), 3 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 3 states have call successors, (4) [2023-02-17 03:25:57,995 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 114 transitions. [2023-02-17 03:25:57,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 03:25:57,995 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:57,995 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:25:58,010 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-17 03:25:58,200 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable6 [2023-02-17 03:25:58,200 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:58,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:58,201 INFO L85 PathProgramCache]: Analyzing trace with hash -1778867041, now seen corresponding path program 1 times [2023-02-17 03:25:58,201 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:58,201 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [532716618] [2023-02-17 03:25:58,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:58,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:58,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:58,338 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:25:58,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:58,370 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:25:58,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:58,407 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:25:58,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:58,459 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 13 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2023-02-17 03:25:58,459 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:58,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [532716618] [2023-02-17 03:25:58,459 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [532716618] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:25:58,459 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1818615925] [2023-02-17 03:25:58,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:58,460 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:25:58,460 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:25:58,461 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) [2023-02-17 03:25:58,463 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-17 03:25:58,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:58,568 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 29 conjunts are in the unsatisfiable core [2023-02-17 03:25:58,571 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:25:58,575 INFO L350 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 [2023-02-17 03:25:58,581 INFO L350 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 5 treesize of output 3 [2023-02-17 03:25:58,589 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_521 Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| v_ArrVal_521))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-17 03:25:58,602 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:25:58,603 INFO L350 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 12 treesize of output 14 [2023-02-17 03:25:58,606 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_522 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_~temp~0#1.base| v_ArrVal_522))) is different from true [2023-02-17 03:25:58,609 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_522 Int)) (= |c_#valid| (store |c_old(#valid)| |c_node_create_#res#1.base| v_ArrVal_522))) is different from true [2023-02-17 03:25:58,612 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:25:58,612 INFO L350 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 28 [2023-02-17 03:25:58,635 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1))) is different from true [2023-02-17 03:25:58,640 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:25:58,640 INFO L350 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 28 [2023-02-17 03:25:58,660 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 18 not checked. [2023-02-17 03:25:58,660 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:25:58,790 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1818615925] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:25:58,791 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:25:58,791 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 11] total 16 [2023-02-17 03:25:58,791 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [414528526] [2023-02-17 03:25:58,791 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:25:58,791 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-17 03:25:58,791 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:58,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-17 03:25:58,792 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=82, Invalid=272, Unknown=4, NotChecked=148, Total=506 [2023-02-17 03:25:58,792 INFO L87 Difference]: Start difference. First operand 106 states and 114 transitions. Second operand has 17 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:25:58,988 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:25:58,989 INFO L93 Difference]: Finished difference Result 116 states and 125 transitions. [2023-02-17 03:25:58,989 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:25:58,989 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2023-02-17 03:25:58,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:25:58,990 INFO L225 Difference]: With dead ends: 116 [2023-02-17 03:25:58,990 INFO L226 Difference]: Without dead ends: 116 [2023-02-17 03:25:58,990 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 82 GetRequests, 50 SyntacticMatches, 8 SemanticMatches, 24 ConstructedPredicates, 4 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=111, Invalid=363, Unknown=4, NotChecked=172, Total=650 [2023-02-17 03:25:58,991 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 324 mSDsluCounter, 178 mSDsCounter, 0 mSdLazyCounter, 277 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 324 SdHoareTripleChecker+Valid, 229 SdHoareTripleChecker+Invalid, 690 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 277 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 402 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:25:58,991 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [324 Valid, 229 Invalid, 690 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 277 Invalid, 0 Unknown, 402 Unchecked, 0.2s Time] [2023-02-17 03:25:58,991 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-17 03:25:58,993 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2023-02-17 03:25:58,993 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 60 states have (on average 1.6666666666666667) internal successors, (100), 93 states have internal predecessors, (100), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:25:58,993 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2023-02-17 03:25:58,993 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 37 [2023-02-17 03:25:58,994 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:25:58,994 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2023-02-17 03:25:58,994 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 2.9375) internal successors, (47), 14 states have internal predecessors, (47), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:25:58,994 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2023-02-17 03:25:58,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-17 03:25:58,994 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:25:58,994 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:25:59,011 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-17 03:25:59,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:25:59,201 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:25:59,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:25:59,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1778867040, now seen corresponding path program 1 times [2023-02-17 03:25:59,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:25:59,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [781053338] [2023-02-17 03:25:59,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:59,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:25:59,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:59,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:25:59,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:59,434 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:25:59,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:59,473 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:25:59,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:59,514 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 03:25:59,514 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:25:59,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [781053338] [2023-02-17 03:25:59,514 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [781053338] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:25:59,514 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1851218330] [2023-02-17 03:25:59,515 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:25:59,515 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:25:59,515 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:25:59,516 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) [2023-02-17 03:25:59,518 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-17 03:25:59,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:25:59,629 INFO L263 TraceCheckSpWp]: Trace formula consists of 327 conjuncts, 26 conjunts are in the unsatisfiable core [2023-02-17 03:25:59,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:25:59,635 INFO L350 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 [2023-02-17 03:25:59,646 INFO L350 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 7 treesize of output 5 [2023-02-17 03:25:59,660 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_686 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_686) |c_#length|)))) is different from true [2023-02-17 03:25:59,681 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:25:59,683 INFO L350 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 16 [2023-02-17 03:25:59,690 INFO L350 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 7 treesize of output 5 [2023-02-17 03:25:59,694 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_687 Int)) (= |c_#length| (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_687))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-17 03:25:59,712 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:25:59,713 INFO L350 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 16 [2023-02-17 03:25:59,723 INFO L350 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 7 treesize of output 5 [2023-02-17 03:25:59,727 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_688 Int)) (= |c_#length| (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_688))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|))) is different from true [2023-02-17 03:25:59,738 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:25:59,738 INFO L350 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 16 [2023-02-17 03:25:59,740 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 18 not checked. [2023-02-17 03:25:59,740 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:25:59,775 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1851218330] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:25:59,775 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:25:59,775 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 14 [2023-02-17 03:25:59,775 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209238561] [2023-02-17 03:25:59,776 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:25:59,776 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2023-02-17 03:25:59,776 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:25:59,777 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2023-02-17 03:25:59,777 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=147, Unknown=3, NotChecked=78, Total=272 [2023-02-17 03:25:59,778 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:26:00,045 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:00,045 INFO L93 Difference]: Finished difference Result 108 states and 117 transitions. [2023-02-17 03:26:00,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-17 03:26:00,046 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) Word has length 37 [2023-02-17 03:26:00,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:00,046 INFO L225 Difference]: With dead ends: 108 [2023-02-17 03:26:00,046 INFO L226 Difference]: Without dead ends: 108 [2023-02-17 03:26:00,047 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 37 SyntacticMatches, 2 SemanticMatches, 18 ConstructedPredicates, 3 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=66, Invalid=215, Unknown=3, NotChecked=96, Total=380 [2023-02-17 03:26:00,048 INFO L413 NwaCegarLoop]: 47 mSDtfsCounter, 279 mSDsluCounter, 156 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 279 SdHoareTripleChecker+Valid, 203 SdHoareTripleChecker+Invalid, 557 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 273 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:00,049 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [279 Valid, 203 Invalid, 557 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 274 Invalid, 0 Unknown, 273 Unchecked, 0.2s Time] [2023-02-17 03:26:00,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2023-02-17 03:26:00,053 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 90. [2023-02-17 03:26:00,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 60 states have (on average 1.5333333333333334) internal successors, (92), 85 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:00,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2023-02-17 03:26:00,054 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 37 [2023-02-17 03:26:00,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:00,055 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2023-02-17 03:26:00,055 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 12 states have (on average 3.6666666666666665) internal successors, (44), 13 states have internal predecessors, (44), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 2 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-17 03:26:00,055 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2023-02-17 03:26:00,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 03:26:00,058 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:00,059 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:00,074 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-17 03:26:00,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:26:00,265 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:00,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:00,265 INFO L85 PathProgramCache]: Analyzing trace with hash -94242400, now seen corresponding path program 1 times [2023-02-17 03:26:00,265 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:00,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [777814758] [2023-02-17 03:26:00,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:00,266 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:00,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,315 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:00,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,322 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:00,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,327 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:00,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,346 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 03:26:00,346 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:00,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [777814758] [2023-02-17 03:26:00,346 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [777814758] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:26:00,346 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:26:00,347 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2023-02-17 03:26:00,347 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545834985] [2023-02-17 03:26:00,347 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:26:00,347 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-17 03:26:00,347 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:26:00,348 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-17 03:26:00,349 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-17 03:26:00,349 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:26:00,485 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:00,486 INFO L93 Difference]: Finished difference Result 106 states and 115 transitions. [2023-02-17 03:26:00,486 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:26:00,486 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-02-17 03:26:00,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:00,488 INFO L225 Difference]: With dead ends: 106 [2023-02-17 03:26:00,488 INFO L226 Difference]: Without dead ends: 106 [2023-02-17 03:26:00,488 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:26:00,489 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 68 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 240 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 68 SdHoareTripleChecker+Valid, 266 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 240 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:00,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [68 Valid, 266 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 240 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:26:00,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2023-02-17 03:26:00,492 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 88. [2023-02-17 03:26:00,493 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 60 states have (on average 1.5) internal successors, (90), 83 states have internal predecessors, (90), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:00,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 96 transitions. [2023-02-17 03:26:00,495 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 96 transitions. Word has length 39 [2023-02-17 03:26:00,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:00,496 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 96 transitions. [2023-02-17 03:26:00,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 4.166666666666667) internal successors, (25), 5 states have internal predecessors, (25), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:26:00,497 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 96 transitions. [2023-02-17 03:26:00,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2023-02-17 03:26:00,500 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:00,500 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:00,501 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-17 03:26:00,501 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:00,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:00,501 INFO L85 PathProgramCache]: Analyzing trace with hash -94242399, now seen corresponding path program 1 times [2023-02-17 03:26:00,501 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:00,502 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1763433170] [2023-02-17 03:26:00,502 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:00,502 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:00,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,604 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,610 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,615 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:00,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,652 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 03:26:00,652 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:00,653 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1763433170] [2023-02-17 03:26:00,653 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1763433170] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:26:00,653 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:26:00,653 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-17 03:26:00,653 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1997707184] [2023-02-17 03:26:00,653 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:26:00,654 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-17 03:26:00,654 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:26:00,655 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-17 03:26:00,655 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2023-02-17 03:26:00,655 INFO L87 Difference]: Start difference. First operand 88 states and 96 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:26:00,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:00,762 INFO L93 Difference]: Finished difference Result 86 states and 94 transitions. [2023-02-17 03:26:00,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-17 03:26:00,763 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 39 [2023-02-17 03:26:00,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:00,764 INFO L225 Difference]: With dead ends: 86 [2023-02-17 03:26:00,765 INFO L226 Difference]: Without dead ends: 86 [2023-02-17 03:26:00,765 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2023-02-17 03:26:00,765 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 73 mSDsluCounter, 221 mSDsCounter, 0 mSdLazyCounter, 192 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 284 SdHoareTripleChecker+Invalid, 194 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 192 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:00,765 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 284 Invalid, 194 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 192 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-17 03:26:00,766 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2023-02-17 03:26:00,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2023-02-17 03:26:00,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 60 states have (on average 1.4666666666666666) internal successors, (88), 81 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:00,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2023-02-17 03:26:00,768 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 39 [2023-02-17 03:26:00,768 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:00,768 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2023-02-17 03:26:00,768 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 6 states have internal predecessors, (27), 1 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2023-02-17 03:26:00,768 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2023-02-17 03:26:00,769 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 03:26:00,769 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:00,769 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:00,769 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-17 03:26:00,769 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:00,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:00,770 INFO L85 PathProgramCache]: Analyzing trace with hash -372386587, now seen corresponding path program 1 times [2023-02-17 03:26:00,770 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:00,770 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [809844564] [2023-02-17 03:26:00,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:00,770 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:00,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,982 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:00,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:00,989 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:01,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:01,024 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:01,027 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:01,111 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 4 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2023-02-17 03:26:01,112 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:01,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [809844564] [2023-02-17 03:26:01,112 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [809844564] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:26:01,112 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1900225436] [2023-02-17 03:26:01,112 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:01,112 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:26:01,113 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:26:01,114 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) [2023-02-17 03:26:01,115 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-17 03:26:01,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:01,239 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 42 conjunts are in the unsatisfiable core [2023-02-17 03:26:01,241 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:26:01,316 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 5 [2023-02-17 03:26:01,365 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1044 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1044))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| 1)))) is different from true [2023-02-17 03:26:01,372 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:26:01,373 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-17 03:26:01,375 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:01,375 INFO L350 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 16 treesize of output 44 [2023-02-17 03:26:01,415 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 84 treesize of output 60 [2023-02-17 03:26:01,423 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2023-02-17 03:26:01,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-17 03:26:01,423 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1900225436] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:26:01,423 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-17 03:26:01,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [16] total 26 [2023-02-17 03:26:01,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042839796] [2023-02-17 03:26:01,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:26:01,424 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-17 03:26:01,424 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:26:01,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-17 03:26:01,425 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=77, Invalid=575, Unknown=2, NotChecked=48, Total=702 [2023-02-17 03:26:01,425 INFO L87 Difference]: Start difference. First operand 86 states and 94 transitions. Second operand has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:26:01,839 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:01,839 INFO L93 Difference]: Finished difference Result 128 states and 141 transitions. [2023-02-17 03:26:01,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-17 03:26:01,840 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 41 [2023-02-17 03:26:01,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:01,840 INFO L225 Difference]: With dead ends: 128 [2023-02-17 03:26:01,840 INFO L226 Difference]: Without dead ends: 128 [2023-02-17 03:26:01,841 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=811, Unknown=2, NotChecked=58, Total=992 [2023-02-17 03:26:01,841 INFO L413 NwaCegarLoop]: 96 mSDtfsCounter, 79 mSDsluCounter, 569 mSDsCounter, 0 mSdLazyCounter, 580 mSolverCounterSat, 6 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 665 SdHoareTripleChecker+Invalid, 767 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 580 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 178 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:01,841 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 665 Invalid, 767 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 580 Invalid, 3 Unknown, 178 Unchecked, 0.4s Time] [2023-02-17 03:26:01,841 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2023-02-17 03:26:01,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 85. [2023-02-17 03:26:01,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 61 states have (on average 1.4426229508196722) internal successors, (88), 80 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:01,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 94 transitions. [2023-02-17 03:26:01,843 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 94 transitions. Word has length 41 [2023-02-17 03:26:01,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:01,843 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 94 transitions. [2023-02-17 03:26:01,843 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 2.4166666666666665) internal successors, (29), 13 states have internal predecessors, (29), 2 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:26:01,843 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 94 transitions. [2023-02-17 03:26:01,844 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2023-02-17 03:26:01,844 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:01,844 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:01,867 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-17 03:26:02,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-17 03:26:02,045 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:02,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:02,045 INFO L85 PathProgramCache]: Analyzing trace with hash -372386586, now seen corresponding path program 1 times [2023-02-17 03:26:02,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:02,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1239857991] [2023-02-17 03:26:02,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:02,046 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:02,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:02,346 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:02,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:02,353 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:02,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:02,391 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:02,510 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:26:02,510 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1239857991] [2023-02-17 03:26:02,510 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1239857991] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:26:02,510 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1686110087] [2023-02-17 03:26:02,510 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:02,510 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:26:02,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:26:02,512 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) [2023-02-17 03:26:02,514 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-17 03:26:02,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:02,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 348 conjuncts, 70 conjunts are in the unsatisfiable core [2023-02-17 03:26:02,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:26:02,914 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 15 [2023-02-17 03:26:02,925 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-17 03:26:03,033 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int)) (and (exists ((v_ArrVal_1203 (Array Int Int))) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1203))) (< |node_create_~temp~0#1.base| |c_#StackHeapBarrier|) (exists ((v_ArrVal_1199 Int)) (= (store |c_old(#length)| |node_create_~temp~0#1.base| v_ArrVal_1199) |c_#length|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (exists ((v_ArrVal_1202 (Array Int Int))) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1202))))) is different from true [2023-02-17 03:26:03,052 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:26:03,052 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2023-02-17 03:26:03,057 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:26:03,057 INFO L350 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 20 treesize of output 22 [2023-02-17 03:26:03,060 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:26:03,060 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 03:26:03,062 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:03,063 INFO L350 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 15 treesize of output 19 [2023-02-17 03:26:03,088 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-17 03:26:03,090 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-02-17 03:26:03,164 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-02-17 03:26:03,164 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:26:03,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1686110087] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:26:03,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:26:03,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 18] total 33 [2023-02-17 03:26:03,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491613123] [2023-02-17 03:26:03,293 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:26:03,294 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 34 states [2023-02-17 03:26:03,294 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:26:03,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 34 interpolants. [2023-02-17 03:26:03,295 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=1222, Unknown=2, NotChecked=70, Total=1406 [2023-02-17 03:26:03,295 INFO L87 Difference]: Start difference. First operand 85 states and 94 transitions. Second operand has 34 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:26:04,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:04,378 INFO L93 Difference]: Finished difference Result 140 states and 153 transitions. [2023-02-17 03:26:04,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2023-02-17 03:26:04,379 INFO L78 Accepts]: Start accepts. Automaton has has 34 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 41 [2023-02-17 03:26:04,379 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:04,379 INFO L225 Difference]: With dead ends: 140 [2023-02-17 03:26:04,379 INFO L226 Difference]: Without dead ends: 140 [2023-02-17 03:26:04,380 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 85 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 54 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 536 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=331, Invalid=2638, Unknown=5, NotChecked=106, Total=3080 [2023-02-17 03:26:04,381 INFO L413 NwaCegarLoop]: 79 mSDtfsCounter, 436 mSDsluCounter, 1178 mSDsCounter, 0 mSdLazyCounter, 1304 mSolverCounterSat, 10 mSolverCounterUnsat, 3 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 436 SdHoareTripleChecker+Valid, 1257 SdHoareTripleChecker+Invalid, 1467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 1304 IncrementalHoareTripleChecker+Invalid, 3 IncrementalHoareTripleChecker+Unknown, 150 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:04,381 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [436 Valid, 1257 Invalid, 1467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 1304 Invalid, 3 Unknown, 150 Unchecked, 0.7s Time] [2023-02-17 03:26:04,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2023-02-17 03:26:04,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 89. [2023-02-17 03:26:04,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 65 states have (on average 1.4153846153846155) internal successors, (92), 84 states have internal predecessors, (92), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:04,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 98 transitions. [2023-02-17 03:26:04,383 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 98 transitions. Word has length 41 [2023-02-17 03:26:04,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:04,383 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 98 transitions. [2023-02-17 03:26:04,383 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 34 states, 31 states have (on average 2.064516129032258) internal successors, (64), 30 states have internal predecessors, (64), 4 states have call successors, (6), 3 states have call predecessors, (6), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:26:04,383 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 98 transitions. [2023-02-17 03:26:04,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-17 03:26:04,383 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:04,384 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:04,407 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-17 03:26:04,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:26:04,601 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:04,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:04,602 INFO L85 PathProgramCache]: Analyzing trace with hash 1386112687, now seen corresponding path program 1 times [2023-02-17 03:26:04,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:04,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2144257517] [2023-02-17 03:26:04,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:04,602 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:04,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:04,719 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:04,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:04,724 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:04,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:04,728 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:04,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:04,749 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2023-02-17 03:26:04,750 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:04,750 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2144257517] [2023-02-17 03:26:04,750 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2144257517] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:26:04,750 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:26:04,750 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 03:26:04,750 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1067647430] [2023-02-17 03:26:04,750 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:26:04,751 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 03:26:04,751 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:26:04,751 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 03:26:04,751 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-17 03:26:04,751 INFO L87 Difference]: Start difference. First operand 89 states and 98 transitions. Second operand has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:26:04,969 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:04,969 INFO L93 Difference]: Finished difference Result 152 states and 164 transitions. [2023-02-17 03:26:04,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-17 03:26:04,970 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-02-17 03:26:04,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:04,970 INFO L225 Difference]: With dead ends: 152 [2023-02-17 03:26:04,970 INFO L226 Difference]: Without dead ends: 152 [2023-02-17 03:26:04,971 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=50, Invalid=190, Unknown=0, NotChecked=0, Total=240 [2023-02-17 03:26:04,971 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 270 mSDsluCounter, 343 mSDsCounter, 0 mSdLazyCounter, 340 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 270 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 345 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 340 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:04,971 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [270 Valid, 398 Invalid, 345 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 340 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:26:04,972 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2023-02-17 03:26:04,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 92. [2023-02-17 03:26:04,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 69 states have (on average 1.391304347826087) internal successors, (96), 87 states have internal predecessors, (96), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:04,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 102 transitions. [2023-02-17 03:26:04,974 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 102 transitions. Word has length 44 [2023-02-17 03:26:04,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:04,974 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 102 transitions. [2023-02-17 03:26:04,974 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 9 states have internal predecessors, (30), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:26:04,974 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 102 transitions. [2023-02-17 03:26:04,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2023-02-17 03:26:04,974 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:04,975 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:04,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2023-02-17 03:26:04,975 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:04,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:04,975 INFO L85 PathProgramCache]: Analyzing trace with hash 1386112688, now seen corresponding path program 1 times [2023-02-17 03:26:04,975 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:04,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [494073011] [2023-02-17 03:26:04,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:04,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:04,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,188 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:05,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,193 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:05,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,197 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:05,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,248 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2023-02-17 03:26:05,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:05,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [494073011] [2023-02-17 03:26:05,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [494073011] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-17 03:26:05,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-17 03:26:05,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2023-02-17 03:26:05,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1495349393] [2023-02-17 03:26:05,249 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-17 03:26:05,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-17 03:26:05,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:26:05,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-17 03:26:05,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=89, Unknown=0, NotChecked=0, Total=110 [2023-02-17 03:26:05,250 INFO L87 Difference]: Start difference. First operand 92 states and 102 transitions. Second operand has 11 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:26:05,497 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:05,497 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2023-02-17 03:26:05,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-17 03:26:05,498 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 44 [2023-02-17 03:26:05,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:05,499 INFO L225 Difference]: With dead ends: 134 [2023-02-17 03:26:05,499 INFO L226 Difference]: Without dead ends: 134 [2023-02-17 03:26:05,500 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=166, Unknown=0, NotChecked=0, Total=210 [2023-02-17 03:26:05,500 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 275 mSDsluCounter, 353 mSDsCounter, 0 mSdLazyCounter, 321 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 411 SdHoareTripleChecker+Invalid, 322 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 321 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:05,501 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 411 Invalid, 322 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 321 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-17 03:26:05,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2023-02-17 03:26:05,502 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 94. [2023-02-17 03:26:05,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 71 states have (on average 1.380281690140845) internal successors, (98), 89 states have internal predecessors, (98), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:05,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 104 transitions. [2023-02-17 03:26:05,503 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 104 transitions. Word has length 44 [2023-02-17 03:26:05,504 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:05,504 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 104 transitions. [2023-02-17 03:26:05,504 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 3.5555555555555554) internal successors, (32), 9 states have internal predecessors, (32), 2 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2023-02-17 03:26:05,504 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 104 transitions. [2023-02-17 03:26:05,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 03:26:05,506 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:05,506 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:05,506 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-17 03:26:05,507 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr44ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:05,508 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:05,508 INFO L85 PathProgramCache]: Analyzing trace with hash 614432594, now seen corresponding path program 1 times [2023-02-17 03:26:05,508 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:05,508 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [550354011] [2023-02-17 03:26:05,508 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:05,508 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:05,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,672 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:05,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,678 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:05,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,720 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:05,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,799 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 13 proven. 6 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:26:05,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:05,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [550354011] [2023-02-17 03:26:05,799 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [550354011] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:26:05,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [402134673] [2023-02-17 03:26:05,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:05,800 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:26:05,800 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:26:05,815 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:26:05,829 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-17 03:26:05,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:05,982 INFO L263 TraceCheckSpWp]: Trace formula consists of 393 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-17 03:26:05,986 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:26:06,096 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 13 [2023-02-17 03:26:06,133 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_1614 (Array Int Int)) (|node_create_~temp~0#1.base| Int)) (and (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1614)) (<= |node_create_~temp~0#1.base| (+ (- 1) |c_#StackHeapBarrier|)))) is different from true [2023-02-17 03:26:06,139 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:26:06,139 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 28 [2023-02-17 03:26:06,154 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 17 [2023-02-17 03:26:06,167 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 15 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 3 not checked. [2023-02-17 03:26:06,167 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-17 03:26:06,228 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [402134673] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:26:06,228 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-17 03:26:06,228 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16, 16] total 26 [2023-02-17 03:26:06,228 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988091490] [2023-02-17 03:26:06,228 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-17 03:26:06,228 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-17 03:26:06,228 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-17 03:26:06,229 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-17 03:26:06,229 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=607, Unknown=12, NotChecked=50, Total=756 [2023-02-17 03:26:06,229 INFO L87 Difference]: Start difference. First operand 94 states and 104 transitions. Second operand has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 22 states have internal predecessors, (59), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:26:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-17 03:26:06,528 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2023-02-17 03:26:06,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-17 03:26:06,528 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 22 states have internal predecessors, (59), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 46 [2023-02-17 03:26:06,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-17 03:26:06,529 INFO L225 Difference]: With dead ends: 90 [2023-02-17 03:26:06,529 INFO L226 Difference]: Without dead ends: 90 [2023-02-17 03:26:06,530 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 45 SyntacticMatches, 7 SemanticMatches, 34 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 283 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=176, Invalid=1006, Unknown=12, NotChecked=66, Total=1260 [2023-02-17 03:26:06,530 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 381 mSDsluCounter, 531 mSDsCounter, 0 mSdLazyCounter, 418 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 381 SdHoareTripleChecker+Valid, 591 SdHoareTripleChecker+Invalid, 520 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 418 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-17 03:26:06,530 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [381 Valid, 591 Invalid, 520 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 418 Invalid, 0 Unknown, 90 Unchecked, 0.2s Time] [2023-02-17 03:26:06,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2023-02-17 03:26:06,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 86. [2023-02-17 03:26:06,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 63 states have (on average 1.3968253968253967) internal successors, (88), 81 states have internal predecessors, (88), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2023-02-17 03:26:06,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 94 transitions. [2023-02-17 03:26:06,532 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 94 transitions. Word has length 46 [2023-02-17 03:26:06,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-17 03:26:06,532 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 94 transitions. [2023-02-17 03:26:06,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 24 states have (on average 2.4583333333333335) internal successors, (59), 22 states have internal predecessors, (59), 4 states have call successors, (6), 3 states have call predecessors, (6), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2023-02-17 03:26:06,532 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 94 transitions. [2023-02-17 03:26:06,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2023-02-17 03:26:06,532 INFO L187 NwaCegarLoop]: Found error trace [2023-02-17 03:26:06,532 INFO L195 NwaCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-17 03:26:06,537 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Ended with exit code 0 [2023-02-17 03:26:06,736 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:26:06,737 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 47 more)] === [2023-02-17 03:26:06,738 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-17 03:26:06,738 INFO L85 PathProgramCache]: Analyzing trace with hash 2046450120, now seen corresponding path program 1 times [2023-02-17 03:26:06,738 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-17 03:26:06,738 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2092814221] [2023-02-17 03:26:06,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:06,738 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-17 03:26:06,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:07,294 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2023-02-17 03:26:07,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:07,326 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2023-02-17 03:26:07,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:07,405 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2023-02-17 03:26:07,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:07,559 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 10 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2023-02-17 03:26:07,559 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-17 03:26:07,559 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2092814221] [2023-02-17 03:26:07,559 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2092814221] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-17 03:26:07,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168338983] [2023-02-17 03:26:07,560 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-17 03:26:07,560 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-17 03:26:07,560 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-17 03:26:07,568 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-17 03:26:07,568 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-17 03:26:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-17 03:26:07,718 INFO L263 TraceCheckSpWp]: Trace formula consists of 377 conjuncts, 93 conjunts are in the unsatisfiable core [2023-02-17 03:26:07,721 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-17 03:26:07,743 INFO L350 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 [2023-02-17 03:26:07,848 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:07,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 39 [2023-02-17 03:26:07,910 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-17 03:26:07,980 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:07,981 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 65 treesize of output 72 [2023-02-17 03:26:08,090 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:08,092 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 3 case distinctions, treesize of input 140 treesize of output 104 [2023-02-17 03:26:08,099 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-02-17 03:26:08,105 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2023-02-17 03:26:08,113 INFO L350 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 8 treesize of output 6 [2023-02-17 03:26:08,116 INFO L350 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 6 treesize of output 4 [2023-02-17 03:26:08,118 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 03:26:08,190 WARN L859 $PredicateComparison]: unable to prove that (exists ((|node_create_~temp~0#1.base| Int) (v_ArrVal_1782 (Array Int Int)) (v_ArrVal_1781 (Array Int Int))) (and (= |c_#valid| (store |c_old(#valid)| |node_create_~temp~0#1.base| (select |c_#valid| |node_create_~temp~0#1.base|))) (<= |node_create_~temp~0#1.base| (+ (- 1) |c_#StackHeapBarrier|)) (= 0 (select |c_old(#valid)| |node_create_~temp~0#1.base|)) (= |c_#memory_$Pointer$.base| (store |c_old(#memory_$Pointer$.base)| |node_create_~temp~0#1.base| v_ArrVal_1782)) (= |c_#memory_$Pointer$.offset| (store |c_old(#memory_$Pointer$.offset)| |node_create_~temp~0#1.base| v_ArrVal_1781)))) is different from true [2023-02-17 03:26:08,202 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:26:08,203 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:08,204 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 5 new quantified variables, introduced 5 case distinctions, treesize of input 146 treesize of output 152 [2023-02-17 03:26:08,211 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:08,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 4 case distinctions, treesize of input 71 treesize of output 125 [2023-02-17 03:26:08,217 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-17 03:26:08,217 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 16 [2023-02-17 03:26:08,223 WARN L207 Elim1Store]: Array PQE input equivalent to false [2023-02-17 03:26:08,328 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2023-02-17 03:26:08,569 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-17 03:26:08,570 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 23 select indices, 23 select index equivalence classes, 0 disjoint index pairs (out of 253 index pairs), introduced 37 new quantified variables, introduced 253 case distinctions, treesize of input 618 treesize of output 2406