./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0235-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5317dae 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/memsafety/test-0235-1.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 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:14:11,953 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:14:11,955 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:14:11,976 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:14:11,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:14:11,983 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:14:11,984 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:14:11,986 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:14:11,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:14:11,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:14:11,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:14:11,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:14:11,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:14:11,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:14:11,997 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:14:11,998 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:14:11,999 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:14:12,000 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:14:12,001 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:14:12,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:14:12,004 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:14:12,005 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:14:12,006 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:14:12,007 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:14:12,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:14:12,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:14:12,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:14:12,013 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:14:12,014 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:14:12,015 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:14:12,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:14:12,016 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:14:12,017 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:14:12,018 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:14:12,019 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:14:12,019 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:14:12,019 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:14:12,020 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:14:12,020 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:14:12,021 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:14:12,021 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:14:12,022 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:14:12,042 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:14:12,044 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:14:12,044 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:14:12,044 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:14:12,045 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:14:12,045 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:14:12,045 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:14:12,046 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:14:12,046 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:14:12,046 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:14:12,046 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:14:12,047 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:14:12,048 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:14:12,048 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:14:12,048 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:14:12,048 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:14:12,048 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:14:12,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:14:12,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:14:12,049 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:14:12,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:14:12,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:14:12,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:14:12,049 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:14:12,049 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:14:12,050 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:14:12,050 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:14:12,050 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6e8dd9d71aae7a8c83467a9093ad4bffb4ddd59cddc2d90362f34ff651f24f9a [2023-02-16 03:14:12,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:14:12,259 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:14:12,261 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:14:12,262 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:14:12,262 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:14:12,263 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0235-1.i [2023-02-16 03:14:13,253 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:14:13,495 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:14:13,496 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0235-1.i [2023-02-16 03:14:13,512 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef13bf647/b6207ebf46464570b2d973762d49173f/FLAG1c1e889b8 [2023-02-16 03:14:13,525 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ef13bf647/b6207ebf46464570b2d973762d49173f [2023-02-16 03:14:13,527 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:14:13,528 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:14:13,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:14:13,530 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:14:13,533 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:14:13,533 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,535 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@72985b53 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13, skipping insertion in model container [2023-02-16 03:14:13,536 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,540 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:14:13,575 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:14:13,801 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:14:13,810 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:14:13,852 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:14:13,873 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:14:13,873 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13 WrapperNode [2023-02-16 03:14:13,874 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:14:13,874 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:14:13,874 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:14:13,875 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:14:13,879 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,890 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,909 INFO L138 Inliner]: procedures = 188, calls = 69, calls flagged for inlining = 13, calls inlined = 13, statements flattened = 234 [2023-02-16 03:14:13,910 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:14:13,910 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:14:13,910 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:14:13,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:14:13,917 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,921 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,921 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,928 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,940 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,941 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:14:13,944 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:14:13,944 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:14:13,945 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:14:13,945 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (1/1) ... [2023-02-16 03:14:13,949 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:14:13,959 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:13,970 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) [2023-02-16 03:14:13,989 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 [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure zalloc_or_die [2023-02-16 03:14:14,004 INFO L138 BoogieDeclarations]: Found implementation of procedure zalloc_or_die [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 03:14:14,004 INFO L130 BoogieDeclarations]: Found specification of procedure l0_destroy [2023-02-16 03:14:14,005 INFO L138 BoogieDeclarations]: Found implementation of procedure l0_destroy [2023-02-16 03:14:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 03:14:14,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:14:14,005 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:14:14,104 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:14:14,106 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:14:14,578 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:14:14,585 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:14:14,585 INFO L300 CfgBuilder]: Removed 10 assume(true) statements. [2023-02-16 03:14:14,586 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:14:14 BoogieIcfgContainer [2023-02-16 03:14:14,587 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:14:14,588 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:14:14,588 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:14:14,590 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:14:14,590 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:14:13" (1/3) ... [2023-02-16 03:14:14,590 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ebbe1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:14:14, skipping insertion in model container [2023-02-16 03:14:14,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:14:13" (2/3) ... [2023-02-16 03:14:14,591 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@68ebbe1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:14:14, skipping insertion in model container [2023-02-16 03:14:14,591 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:14:14" (3/3) ... [2023-02-16 03:14:14,592 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0235-1.i [2023-02-16 03:14:14,604 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:14:14,604 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 85 error locations. [2023-02-16 03:14:14,634 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:14:14,638 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;@222bbe84, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:14:14,639 INFO L358 AbstractCegarLoop]: Starting to check reachability of 85 error locations. [2023-02-16 03:14:14,642 INFO L276 IsEmpty]: Start isEmpty. Operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:14,646 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-16 03:14:14,646 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:14,646 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-16 03:14:14,647 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:14,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:14,650 INFO L85 PathProgramCache]: Analyzing trace with hash 930118, now seen corresponding path program 1 times [2023-02-16 03:14:14,657 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:14,657 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [482768767] [2023-02-16 03:14:14,657 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:14,658 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:14,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:14,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:14,761 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:14,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [482768767] [2023-02-16 03:14:14,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [482768767] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:14,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:14,762 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:14:14,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68837917] [2023-02-16 03:14:14,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:14,767 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2023-02-16 03:14:14,768 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:14,786 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2023-02-16 03:14:14,786 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 03:14:14,788 INFO L87 Difference]: Start difference. First operand has 233 states, 134 states have (on average 1.873134328358209) internal successors, (251), 219 states have internal predecessors, (251), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) Second operand has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:14,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:14,825 INFO L93 Difference]: Finished difference Result 233 states and 262 transitions. [2023-02-16 03:14:14,825 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2023-02-16 03:14:14,826 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-02-16 03:14:14,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:14,832 INFO L225 Difference]: With dead ends: 233 [2023-02-16 03:14:14,835 INFO L226 Difference]: Without dead ends: 231 [2023-02-16 03:14:14,837 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2023-02-16 03:14:14,839 INFO L413 NwaCegarLoop]: 262 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:14,840 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 262 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:14:14,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2023-02-16 03:14:14,884 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 231. [2023-02-16 03:14:14,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 231 states, 133 states have (on average 1.7894736842105263) internal successors, (238), 217 states have internal predecessors, (238), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:14,896 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 231 states to 231 states and 260 transitions. [2023-02-16 03:14:14,898 INFO L78 Accepts]: Start accepts. Automaton has 231 states and 260 transitions. Word has length 4 [2023-02-16 03:14:14,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:14,898 INFO L495 AbstractCegarLoop]: Abstraction has 231 states and 260 transitions. [2023-02-16 03:14:14,898 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:14,898 INFO L276 IsEmpty]: Start isEmpty. Operand 231 states and 260 transitions. [2023-02-16 03:14:14,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2023-02-16 03:14:14,899 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:14,899 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2023-02-16 03:14:14,899 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 03:14:14,900 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting zalloc_or_dieErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:14,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:14,901 INFO L85 PathProgramCache]: Analyzing trace with hash 889932981, now seen corresponding path program 1 times [2023-02-16 03:14:14,901 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:14,901 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [469044043] [2023-02-16 03:14:14,901 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:14,902 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:14,918 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:14,918 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1759722842] [2023-02-16 03:14:14,919 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:14,919 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:14,919 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:14,928 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) [2023-02-16 03:14:14,929 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 03:14:14,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:14,995 INFO L263 TraceCheckSpWp]: Trace formula consists of 85 conjuncts, 6 conjunts are in the unsatisfiable core [2023-02-16 03:14:14,999 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:15,041 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 [2023-02-16 03:14:15,049 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:15,049 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:15,049 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:15,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [469044043] [2023-02-16 03:14:15,050 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:15,050 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1759722842] [2023-02-16 03:14:15,050 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1759722842] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:15,050 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:15,050 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:14:15,051 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195543858] [2023-02-16 03:14:15,051 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:15,052 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:14:15,052 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:15,052 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:14:15,053 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:14:15,053 INFO L87 Difference]: Start difference. First operand 231 states and 260 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) [2023-02-16 03:14:15,204 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:15,204 INFO L93 Difference]: Finished difference Result 230 states and 259 transitions. [2023-02-16 03:14:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:14:15,205 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 [2023-02-16 03:14:15,205 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:15,206 INFO L225 Difference]: With dead ends: 230 [2023-02-16 03:14:15,206 INFO L226 Difference]: Without dead ends: 230 [2023-02-16 03:14:15,206 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:14:15,207 INFO L413 NwaCegarLoop]: 254 mSDtfsCounter, 9 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 418 SdHoareTripleChecker+Invalid, 90 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:15,208 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [9 Valid, 418 Invalid, 90 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 90 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:15,208 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 230 states. [2023-02-16 03:14:15,214 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 230 to 230. [2023-02-16 03:14:15,215 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 230 states, 133 states have (on average 1.781954887218045) internal successors, (237), 216 states have internal predecessors, (237), 11 states have call successors, (11), 2 states have call predecessors, (11), 2 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:15,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 230 states to 230 states and 259 transitions. [2023-02-16 03:14:15,216 INFO L78 Accepts]: Start accepts. Automaton has 230 states and 259 transitions. Word has length 6 [2023-02-16 03:14:15,216 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:15,217 INFO L495 AbstractCegarLoop]: Abstraction has 230 states and 259 transitions. [2023-02-16 03:14:15,217 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) [2023-02-16 03:14:15,217 INFO L276 IsEmpty]: Start isEmpty. Operand 230 states and 259 transitions. [2023-02-16 03:14:15,217 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2023-02-16 03:14:15,217 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:15,217 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:15,224 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:15,423 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:15,423 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:15,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:15,424 INFO L85 PathProgramCache]: Analyzing trace with hash 1818119056, now seen corresponding path program 1 times [2023-02-16 03:14:15,424 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:15,424 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [245604449] [2023-02-16 03:14:15,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:15,424 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:15,433 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:15,435 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [673835809] [2023-02-16 03:14:15,437 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:15,437 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:15,437 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:15,439 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) [2023-02-16 03:14:15,441 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 03:14:15,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:15,504 INFO L263 TraceCheckSpWp]: Trace formula consists of 87 conjuncts, 20 conjunts are in the unsatisfiable core [2023-02-16 03:14:15,508 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:15,547 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 8 treesize of output 7 [2023-02-16 03:14:15,565 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:15,566 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:15,566 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:15,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [245604449] [2023-02-16 03:14:15,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:15,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [673835809] [2023-02-16 03:14:15,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [673835809] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:15,567 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:15,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:14:15,568 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380370377] [2023-02-16 03:14:15,568 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:15,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:14:15,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:15,569 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:14:15,569 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:14:15,569 INFO L87 Difference]: Start difference. First operand 230 states and 259 transitions. Second operand has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:15,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:15,683 INFO L93 Difference]: Finished difference Result 239 states and 268 transitions. [2023-02-16 03:14:15,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:14:15,683 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2023-02-16 03:14:15,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:15,686 INFO L225 Difference]: With dead ends: 239 [2023-02-16 03:14:15,686 INFO L226 Difference]: Without dead ends: 239 [2023-02-16 03:14:15,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:14:15,688 INFO L413 NwaCegarLoop]: 248 mSDtfsCounter, 16 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 677 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:15,690 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 677 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:15,692 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2023-02-16 03:14:15,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 239. [2023-02-16 03:14:15,714 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 239 states, 141 states have (on average 1.7446808510638299) internal successors, (246), 224 states have internal predecessors, (246), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:15,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 239 states to 239 states and 268 transitions. [2023-02-16 03:14:15,716 INFO L78 Accepts]: Start accepts. Automaton has 239 states and 268 transitions. Word has length 7 [2023-02-16 03:14:15,716 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:15,717 INFO L495 AbstractCegarLoop]: Abstraction has 239 states and 268 transitions. [2023-02-16 03:14:15,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:15,719 INFO L276 IsEmpty]: Start isEmpty. Operand 239 states and 268 transitions. [2023-02-16 03:14:15,721 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2023-02-16 03:14:15,722 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:15,722 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:15,739 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:15,929 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,SelfDestructingSolverStorable2 [2023-02-16 03:14:15,929 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:15,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:15,930 INFO L85 PathProgramCache]: Analyzing trace with hash 253014343, now seen corresponding path program 1 times [2023-02-16 03:14:15,930 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:15,930 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1232213890] [2023-02-16 03:14:15,930 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:15,930 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:15,966 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:15,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1547777332] [2023-02-16 03:14:15,967 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:15,967 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:15,967 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:15,968 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) [2023-02-16 03:14:15,970 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 03:14:16,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:16,111 INFO L263 TraceCheckSpWp]: Trace formula consists of 504 conjuncts, 19 conjunts are in the unsatisfiable core [2023-02-16 03:14:16,115 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:16,166 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 [2023-02-16 03:14:16,233 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 15 treesize of output 11 [2023-02-16 03:14:18,427 INFO L134 CoverageAnalysis]: Checked inductivity of 105 backedges. 68 proven. 0 refuted. 0 times theorem prover too weak. 37 trivial. 0 not checked. [2023-02-16 03:14:18,427 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:18,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:18,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1232213890] [2023-02-16 03:14:18,427 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:18,428 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1547777332] [2023-02-16 03:14:18,428 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1547777332] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:18,428 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:18,428 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:14:18,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1295338884] [2023-02-16 03:14:18,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:18,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:14:18,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:18,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:14:18,430 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:14:18,430 INFO L87 Difference]: Start difference. First operand 239 states and 268 transitions. Second operand has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 03:14:20,535 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 1.35s for a HTC check with result INVALID. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:22,550 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:24,588 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:24,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:24,754 INFO L93 Difference]: Finished difference Result 251 states and 280 transitions. [2023-02-16 03:14:24,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:14:24,755 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 66 [2023-02-16 03:14:24,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:24,756 INFO L225 Difference]: With dead ends: 251 [2023-02-16 03:14:24,756 INFO L226 Difference]: Without dead ends: 241 [2023-02-16 03:14:24,756 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 62 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:14:24,756 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 19 mSDsluCounter, 652 mSDsCounter, 0 mSdLazyCounter, 124 mSolverCounterSat, 5 mSolverCounterUnsat, 2 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 6.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 899 SdHoareTripleChecker+Invalid, 131 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 124 IncrementalHoareTripleChecker+Invalid, 2 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 6.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:24,757 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 899 Invalid, 131 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 124 Invalid, 2 Unknown, 0 Unchecked, 6.3s Time] [2023-02-16 03:14:24,757 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2023-02-16 03:14:24,761 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 241. [2023-02-16 03:14:24,761 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 241 states, 143 states have (on average 1.7342657342657342) internal successors, (248), 226 states have internal predecessors, (248), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:24,762 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 241 states to 241 states and 270 transitions. [2023-02-16 03:14:24,762 INFO L78 Accepts]: Start accepts. Automaton has 241 states and 270 transitions. Word has length 66 [2023-02-16 03:14:24,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:24,763 INFO L495 AbstractCegarLoop]: Abstraction has 241 states and 270 transitions. [2023-02-16 03:14:24,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 7.4) internal successors, (37), 5 states have internal predecessors, (37), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2023-02-16 03:14:24,763 INFO L276 IsEmpty]: Start isEmpty. Operand 241 states and 270 transitions. [2023-02-16 03:14:24,773 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2023-02-16 03:14:24,773 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:24,774 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:24,782 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:24,975 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:24,975 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:24,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:24,975 INFO L85 PathProgramCache]: Analyzing trace with hash 851001466, now seen corresponding path program 1 times [2023-02-16 03:14:24,976 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:24,976 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1663090211] [2023-02-16 03:14:24,976 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:24,976 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:24,998 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:25,000 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1907505230] [2023-02-16 03:14:25,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:25,000 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:25,000 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:25,001 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) [2023-02-16 03:14:25,003 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-16 03:14:25,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:25,189 INFO L263 TraceCheckSpWp]: Trace formula consists of 579 conjuncts, 25 conjunts are in the unsatisfiable core [2023-02-16 03:14:25,192 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:25,206 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 [2023-02-16 03:14:25,223 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 13 treesize of output 9 [2023-02-16 03:14:25,268 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 88 proven. 3 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2023-02-16 03:14:25,268 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:25,566 INFO L134 CoverageAnalysis]: Checked inductivity of 140 backedges. 26 proven. 34 refuted. 0 times theorem prover too weak. 80 trivial. 0 not checked. [2023-02-16 03:14:25,567 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:25,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1663090211] [2023-02-16 03:14:25,567 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:25,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1907505230] [2023-02-16 03:14:25,567 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1907505230] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:14:25,567 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:14:25,567 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 11 [2023-02-16 03:14:25,567 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141069525] [2023-02-16 03:14:25,567 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:25,568 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-16 03:14:25,568 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:25,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-16 03:14:25,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:14:25,568 INFO L87 Difference]: Start difference. First operand 241 states and 270 transitions. Second operand has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 03:14:25,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:25,801 INFO L93 Difference]: Finished difference Result 267 states and 298 transitions. [2023-02-16 03:14:25,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:14:25,802 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) Word has length 71 [2023-02-16 03:14:25,802 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:25,803 INFO L225 Difference]: With dead ends: 267 [2023-02-16 03:14:25,803 INFO L226 Difference]: Without dead ends: 247 [2023-02-16 03:14:25,803 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 146 GetRequests, 131 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2023-02-16 03:14:25,803 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 38 mSDsluCounter, 1142 mSDsCounter, 0 mSdLazyCounter, 162 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 1389 SdHoareTripleChecker+Invalid, 173 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 162 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:25,804 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 1389 Invalid, 173 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 162 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:25,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 247 states. [2023-02-16 03:14:25,807 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 247 to 247. [2023-02-16 03:14:25,807 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 149 states have (on average 1.7046979865771812) internal successors, (254), 232 states have internal predecessors, (254), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:25,808 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 276 transitions. [2023-02-16 03:14:25,809 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 276 transitions. Word has length 71 [2023-02-16 03:14:25,809 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:25,809 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 276 transitions. [2023-02-16 03:14:25,809 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 4.636363636363637) internal successors, (51), 11 states have internal predecessors, (51), 2 states have call successors, (9), 2 states have call predecessors, (9), 4 states have return successors, (9), 2 states have call predecessors, (9), 2 states have call successors, (9) [2023-02-16 03:14:25,809 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2023-02-16 03:14:25,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2023-02-16 03:14:25,810 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:25,810 INFO L195 NwaCegarLoop]: trace histogram [20, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:25,820 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:26,016 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:26,016 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:26,017 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:26,017 INFO L85 PathProgramCache]: Analyzing trace with hash 678119687, now seen corresponding path program 2 times [2023-02-16 03:14:26,017 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:26,017 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1557918973] [2023-02-16 03:14:26,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:26,017 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:26,039 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:26,039 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1392682768] [2023-02-16 03:14:26,039 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-16 03:14:26,039 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:26,039 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:26,051 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) [2023-02-16 03:14:26,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-16 03:14:26,552 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-16 03:14:26,552 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:14:26,556 INFO L263 TraceCheckSpWp]: Trace formula consists of 804 conjuncts, 27 conjunts are in the unsatisfiable core [2023-02-16 03:14:26,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:26,567 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 [2023-02-16 03:14:26,582 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 13 treesize of output 9 [2023-02-16 03:14:26,670 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 135 proven. 10 refuted. 0 times theorem prover too weak. 250 trivial. 0 not checked. [2023-02-16 03:14:26,670 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:26,908 INFO L134 CoverageAnalysis]: Checked inductivity of 395 backedges. 15 proven. 138 refuted. 0 times theorem prover too weak. 242 trivial. 0 not checked. [2023-02-16 03:14:26,908 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:26,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1557918973] [2023-02-16 03:14:26,909 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:26,909 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1392682768] [2023-02-16 03:14:26,909 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1392682768] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:14:26,909 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2023-02-16 03:14:26,909 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 16 [2023-02-16 03:14:26,910 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827008753] [2023-02-16 03:14:26,910 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:26,911 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 03:14:26,911 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:26,912 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 03:14:26,912 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:14:26,912 INFO L87 Difference]: Start difference. First operand 247 states and 276 transitions. Second operand has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-16 03:14:27,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:27,355 INFO L93 Difference]: Finished difference Result 275 states and 308 transitions. [2023-02-16 03:14:27,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2023-02-16 03:14:27,356 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) Word has length 86 [2023-02-16 03:14:27,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:27,357 INFO L225 Difference]: With dead ends: 275 [2023-02-16 03:14:27,357 INFO L226 Difference]: Without dead ends: 255 [2023-02-16 03:14:27,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 180 GetRequests, 156 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=187, Invalid=463, Unknown=0, NotChecked=0, Total=650 [2023-02-16 03:14:27,357 INFO L413 NwaCegarLoop]: 247 mSDtfsCounter, 33 mSDsluCounter, 2276 mSDsCounter, 0 mSdLazyCounter, 347 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 2523 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 347 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:27,358 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 2523 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 347 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:14:27,358 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 255 states. [2023-02-16 03:14:27,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 255 to 255. [2023-02-16 03:14:27,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 255 states, 157 states have (on average 1.6687898089171975) internal successors, (262), 240 states have internal predecessors, (262), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:27,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 255 states to 255 states and 284 transitions. [2023-02-16 03:14:27,362 INFO L78 Accepts]: Start accepts. Automaton has 255 states and 284 transitions. Word has length 86 [2023-02-16 03:14:27,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:27,363 INFO L495 AbstractCegarLoop]: Abstraction has 255 states and 284 transitions. [2023-02-16 03:14:27,363 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 16 states have (on average 3.4375) internal successors, (55), 16 states have internal predecessors, (55), 2 states have call successors, (10), 2 states have call predecessors, (10), 4 states have return successors, (10), 1 states have call predecessors, (10), 2 states have call successors, (10) [2023-02-16 03:14:27,363 INFO L276 IsEmpty]: Start isEmpty. Operand 255 states and 284 transitions. [2023-02-16 03:14:27,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2023-02-16 03:14:27,364 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:27,364 INFO L195 NwaCegarLoop]: trace histogram [40, 6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:27,374 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:27,574 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:27,574 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting zalloc_or_dieErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:27,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:27,575 INFO L85 PathProgramCache]: Analyzing trace with hash 1486586055, now seen corresponding path program 3 times [2023-02-16 03:14:27,575 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:27,575 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2129634120] [2023-02-16 03:14:27,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:27,575 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:27,623 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:27,624 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [427937493] [2023-02-16 03:14:27,624 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-16 03:14:27,624 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:27,624 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:27,625 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) [2023-02-16 03:14:27,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-16 03:14:27,775 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-16 03:14:27,775 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-16 03:14:27,777 INFO L263 TraceCheckSpWp]: Trace formula consists of 164 conjuncts, 18 conjunts are in the unsatisfiable core [2023-02-16 03:14:27,783 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:27,802 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 [2023-02-16 03:14:27,817 INFO L134 CoverageAnalysis]: Checked inductivity of 1085 backedges. 15 proven. 0 refuted. 0 times theorem prover too weak. 1070 trivial. 0 not checked. [2023-02-16 03:14:27,817 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-16 03:14:27,817 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:27,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2129634120] [2023-02-16 03:14:27,817 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:27,817 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [427937493] [2023-02-16 03:14:27,818 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [427937493] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:27,818 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:27,818 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:14:27,818 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [746828434] [2023-02-16 03:14:27,818 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:27,819 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:14:27,819 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:27,819 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:14:27,820 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:14:27,820 INFO L87 Difference]: Start difference. First operand 255 states and 284 transitions. Second operand has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 03:14:27,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:27,911 INFO L93 Difference]: Finished difference Result 254 states and 283 transitions. [2023-02-16 03:14:27,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:14:27,911 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) Word has length 106 [2023-02-16 03:14:27,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:27,913 INFO L225 Difference]: With dead ends: 254 [2023-02-16 03:14:27,913 INFO L226 Difference]: Without dead ends: 254 [2023-02-16 03:14:27,913 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 106 GetRequests, 103 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:14:27,914 INFO L413 NwaCegarLoop]: 246 mSDtfsCounter, 16 mSDsluCounter, 415 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 661 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:27,914 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 661 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:27,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 254 states. [2023-02-16 03:14:27,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 254 to 254. [2023-02-16 03:14:27,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 254 states, 157 states have (on average 1.6624203821656052) internal successors, (261), 239 states have internal predecessors, (261), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:27,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 254 states to 254 states and 283 transitions. [2023-02-16 03:14:27,919 INFO L78 Accepts]: Start accepts. Automaton has 254 states and 283 transitions. Word has length 106 [2023-02-16 03:14:27,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:27,921 INFO L495 AbstractCegarLoop]: Abstraction has 254 states and 283 transitions. [2023-02-16 03:14:27,921 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.0) internal successors, (24), 3 states have internal predecessors, (24), 1 states have call successors, (6), 2 states have call predecessors, (6), 1 states have return successors, (5), 1 states have call predecessors, (5), 1 states have call successors, (5) [2023-02-16 03:14:27,921 INFO L276 IsEmpty]: Start isEmpty. Operand 254 states and 283 transitions. [2023-02-16 03:14:27,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-16 03:14:27,926 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:27,926 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:27,943 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:28,133 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:28,133 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:28,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:28,134 INFO L85 PathProgramCache]: Analyzing trace with hash -1310518742, now seen corresponding path program 1 times [2023-02-16 03:14:28,134 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:28,134 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1393114570] [2023-02-16 03:14:28,134 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:28,134 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:28,175 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:28,175 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1451218299] [2023-02-16 03:14:28,175 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:28,175 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:28,176 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:28,177 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) [2023-02-16 03:14:28,179 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-16 03:14:28,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:28,448 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 21 conjunts are in the unsatisfiable core [2023-02-16 03:14:28,451 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:28,458 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 [2023-02-16 03:14:28,502 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_1496 Int)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_1496))) (= 0 (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|)))) is different from true [2023-02-16 03:14:28,571 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:14:28,571 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 21 [2023-02-16 03:14:28,574 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 709 proven. 0 refuted. 0 times theorem prover too weak. 754 trivial. 88 not checked. [2023-02-16 03:14:28,575 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:28,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:28,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1393114570] [2023-02-16 03:14:28,613 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:28,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1451218299] [2023-02-16 03:14:28,613 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1451218299] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:14:28,613 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:14:28,614 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2023-02-16 03:14:28,614 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1839493584] [2023-02-16 03:14:28,614 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:28,614 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:14:28,614 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:28,614 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:14:28,615 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=73, Unknown=1, NotChecked=16, Total=110 [2023-02-16 03:14:28,615 INFO L87 Difference]: Start difference. First operand 254 states and 283 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:14:29,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:29,059 INFO L93 Difference]: Finished difference Result 393 states and 452 transitions. [2023-02-16 03:14:29,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2023-02-16 03:14:29,059 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 121 [2023-02-16 03:14:29,060 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:29,062 INFO L225 Difference]: With dead ends: 393 [2023-02-16 03:14:29,062 INFO L226 Difference]: Without dead ends: 393 [2023-02-16 03:14:29,062 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 126 GetRequests, 112 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=141, Unknown=1, NotChecked=24, Total=210 [2023-02-16 03:14:29,062 INFO L413 NwaCegarLoop]: 189 mSDtfsCounter, 224 mSDsluCounter, 1087 mSDsCounter, 0 mSdLazyCounter, 858 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 224 SdHoareTripleChecker+Valid, 1276 SdHoareTripleChecker+Invalid, 1176 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 858 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 294 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:29,063 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [224 Valid, 1276 Invalid, 1176 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 858 Invalid, 0 Unknown, 294 Unchecked, 0.4s Time] [2023-02-16 03:14:29,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 393 states. [2023-02-16 03:14:29,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 393 to 252. [2023-02-16 03:14:29,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 252 states, 157 states have (on average 1.6496815286624205) internal successors, (259), 237 states have internal predecessors, (259), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:14:29,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 252 states to 252 states and 281 transitions. [2023-02-16 03:14:29,071 INFO L78 Accepts]: Start accepts. Automaton has 252 states and 281 transitions. Word has length 121 [2023-02-16 03:14:29,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:29,071 INFO L495 AbstractCegarLoop]: Abstraction has 252 states and 281 transitions. [2023-02-16 03:14:29,072 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 8 states have internal predecessors, (40), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:14:29,072 INFO L276 IsEmpty]: Start isEmpty. Operand 252 states and 281 transitions. [2023-02-16 03:14:29,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2023-02-16 03:14:29,074 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:29,074 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:29,088 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:29,281 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:29,281 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:14:29,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:29,282 INFO L85 PathProgramCache]: Analyzing trace with hash -1310518741, now seen corresponding path program 1 times [2023-02-16 03:14:29,282 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:29,282 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1284787883] [2023-02-16 03:14:29,282 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:29,282 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:29,317 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:14:29,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [914089190] [2023-02-16 03:14:29,319 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:29,319 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:29,319 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:29,320 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) [2023-02-16 03:14:29,322 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-16 03:14:30,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:30,975 INFO L263 TraceCheckSpWp]: Trace formula consists of 1253 conjuncts, 72 conjunts are in the unsatisfiable core [2023-02-16 03:14:30,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:31,032 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 [2023-02-16 03:14:31,040 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 [2023-02-16 03:14:40,240 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_2102 Int)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2102))) (= 0 (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|)))) is different from true [2023-02-16 03:14:40,292 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:14:40,293 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 16 treesize of output 18 [2023-02-16 03:14:40,302 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:14:40,303 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 11 [2023-02-16 03:14:40,640 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 590 proven. 316 refuted. 0 times theorem prover too weak. 494 trivial. 151 not checked. [2023-02-16 03:14:40,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:41,028 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1284787883] [2023-02-16 03:14:41,029 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:14:41,029 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [914089190] [2023-02-16 03:14:41,029 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [914089190] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:14:41,029 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:14:41,029 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2023-02-16 03:14:41,029 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364425195] [2023-02-16 03:14:41,029 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:41,029 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 27 states [2023-02-16 03:14:41,029 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:41,030 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2023-02-16 03:14:41,030 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=74, Invalid=682, Unknown=4, NotChecked=52, Total=812 [2023-02-16 03:14:41,030 INFO L87 Difference]: Start difference. First operand 252 states and 281 transitions. Second operand has 27 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:14:43,054 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:45,142 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:47,158 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:49,274 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:53,388 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:55,511 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:14:59,640 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:01,742 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:03,873 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:07,992 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:25,403 WARN L233 SmtUtils]: Spent 6.39s on a formula simplification that was a NOOP. DAG size: 53 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:15:37,085 WARN L233 SmtUtils]: Spent 10.99s on a formula simplification that was a NOOP. DAG size: 62 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:15:42,861 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:44,986 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:47,087 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:15:47,345 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:15:47,345 INFO L93 Difference]: Finished difference Result 398 states and 460 transitions. [2023-02-16 03:15:47,345 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2023-02-16 03:15:47,346 INFO L78 Accepts]: Start accepts. Automaton has has 27 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 121 [2023-02-16 03:15:47,346 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:15:47,347 INFO L225 Difference]: With dead ends: 398 [2023-02-16 03:15:47,347 INFO L226 Difference]: Without dead ends: 398 [2023-02-16 03:15:47,348 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 135 GetRequests, 95 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 253 ImplicationChecksByTransitivity, 44.4s TimeCoverageRelationStatistics Valid=156, Invalid=1473, Unknown=15, NotChecked=78, Total=1722 [2023-02-16 03:15:47,348 INFO L413 NwaCegarLoop]: 80 mSDtfsCounter, 254 mSDsluCounter, 1062 mSDsCounter, 0 mSdLazyCounter, 3919 mSolverCounterSat, 29 mSolverCounterUnsat, 13 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 30.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 262 SdHoareTripleChecker+Valid, 1142 SdHoareTripleChecker+Invalid, 4376 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 3919 IncrementalHoareTripleChecker+Invalid, 13 IncrementalHoareTripleChecker+Unknown, 415 IncrementalHoareTripleChecker+Unchecked, 31.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:15:47,348 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [262 Valid, 1142 Invalid, 4376 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 3919 Invalid, 13 Unknown, 415 Unchecked, 31.2s Time] [2023-02-16 03:15:47,349 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 398 states. [2023-02-16 03:15:47,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 398 to 250. [2023-02-16 03:15:47,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 250 states, 157 states have (on average 1.6369426751592357) internal successors, (257), 235 states have internal predecessors, (257), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:15:47,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 250 states to 250 states and 279 transitions. [2023-02-16 03:15:47,356 INFO L78 Accepts]: Start accepts. Automaton has 250 states and 279 transitions. Word has length 121 [2023-02-16 03:15:47,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:15:47,357 INFO L495 AbstractCegarLoop]: Abstraction has 250 states and 279 transitions. [2023-02-16 03:15:47,357 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 27 states, 25 states have (on average 2.2) internal successors, (55), 24 states have internal predecessors, (55), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:15:47,357 INFO L276 IsEmpty]: Start isEmpty. Operand 250 states and 279 transitions. [2023-02-16 03:15:47,358 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-16 03:15:47,358 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:15:47,358 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:15:47,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Forceful destruction successful, exit code 0 [2023-02-16 03:15:47,569 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable8 [2023-02-16 03:15:47,569 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:15:47,570 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:15:47,570 INFO L85 PathProgramCache]: Analyzing trace with hash -983093109, now seen corresponding path program 1 times [2023-02-16 03:15:47,570 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:15:47,570 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1774877466] [2023-02-16 03:15:47,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:15:47,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:15:47,617 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:15:47,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [424142472] [2023-02-16 03:15:47,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:15:47,618 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:15:47,618 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:15:47,619 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:15:47,621 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-16 03:15:47,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:15:47,934 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 28 conjunts are in the unsatisfiable core [2023-02-16 03:15:47,937 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:15:47,943 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 [2023-02-16 03:15:48,008 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_2719 Int)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_2719))) (= 0 (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|)))) is different from true [2023-02-16 03:15:48,064 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:15:48,064 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 21 [2023-02-16 03:15:48,072 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| 1))) is different from true [2023-02-16 03:15:48,100 INFO L321 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2023-02-16 03:15:48,100 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 14 [2023-02-16 03:15:48,113 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 800 proven. 0 refuted. 0 times theorem prover too weak. 487 trivial. 264 not checked. [2023-02-16 03:15:48,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:15:48,248 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:15:48,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1774877466] [2023-02-16 03:15:48,248 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:15:48,248 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [424142472] [2023-02-16 03:15:48,248 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [424142472] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:15:48,248 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:15:48,249 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2023-02-16 03:15:48,249 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [534680597] [2023-02-16 03:15:48,249 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:15:48,249 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2023-02-16 03:15:48,249 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:15:48,250 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2023-02-16 03:15:48,250 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=111, Unknown=2, NotChecked=42, Total=182 [2023-02-16 03:15:48,250 INFO L87 Difference]: Start difference. First operand 250 states and 279 transitions. Second operand has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:15:48,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:15:48,773 INFO L93 Difference]: Finished difference Result 388 states and 447 transitions. [2023-02-16 03:15:48,773 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:15:48,774 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) Word has length 123 [2023-02-16 03:15:48,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:15:48,775 INFO L225 Difference]: With dead ends: 388 [2023-02-16 03:15:48,775 INFO L226 Difference]: Without dead ends: 388 [2023-02-16 03:15:48,775 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 152 GetRequests, 130 SyntacticMatches, 4 SemanticMatches, 18 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=247, Unknown=2, NotChecked=66, Total=380 [2023-02-16 03:15:48,776 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 317 mSDsluCounter, 1172 mSDsCounter, 0 mSdLazyCounter, 953 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 317 SdHoareTripleChecker+Valid, 1358 SdHoareTripleChecker+Invalid, 1789 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 953 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 804 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:15:48,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [317 Valid, 1358 Invalid, 1789 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 953 Invalid, 0 Unknown, 804 Unchecked, 0.4s Time] [2023-02-16 03:15:48,777 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 388 states. [2023-02-16 03:15:48,780 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 388 to 247. [2023-02-16 03:15:48,781 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 247 states, 157 states have (on average 1.6178343949044587) internal successors, (254), 232 states have internal predecessors, (254), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:15:48,782 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 247 states to 247 states and 276 transitions. [2023-02-16 03:15:48,782 INFO L78 Accepts]: Start accepts. Automaton has 247 states and 276 transitions. Word has length 123 [2023-02-16 03:15:48,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:15:48,782 INFO L495 AbstractCegarLoop]: Abstraction has 247 states and 276 transitions. [2023-02-16 03:15:48,782 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 4.636363636363637) internal successors, (51), 10 states have internal predecessors, (51), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 3 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:15:48,783 INFO L276 IsEmpty]: Start isEmpty. Operand 247 states and 276 transitions. [2023-02-16 03:15:48,783 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2023-02-16 03:15:48,783 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:15:48,783 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:15:48,793 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-16 03:15:48,990 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable9 [2023-02-16 03:15:48,991 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:15:48,991 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:15:48,991 INFO L85 PathProgramCache]: Analyzing trace with hash -983093108, now seen corresponding path program 1 times [2023-02-16 03:15:48,992 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:15:48,992 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1713434779] [2023-02-16 03:15:48,992 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:15:48,992 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:15:49,027 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:15:49,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [1054620577] [2023-02-16 03:15:49,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:15:49,028 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:15:49,028 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:15:49,029 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:15:49,031 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-16 03:15:52,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:15:52,637 INFO L263 TraceCheckSpWp]: Trace formula consists of 1270 conjuncts, 81 conjunts are in the unsatisfiable core [2023-02-16 03:15:52,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:15:52,670 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 [2023-02-16 03:16:04,518 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3339 Int) (v_ArrVal_3338 Int) (|zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base|)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3339)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_#Ultimate.C_memset_#ptr#1.base| v_ArrVal_3338)))) is different from true [2023-02-16 03:16:04,660 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:16:04,661 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 16 treesize of output 18 [2023-02-16 03:16:04,672 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:16:04,672 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 21 [2023-02-16 03:16:05,193 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (= 0 (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|)) (exists ((v_ArrVal_3340 Int)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_3340))))) is different from true [2023-02-16 03:16:05,267 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:16:05,268 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 16 treesize of output 18 [2023-02-16 03:16:05,341 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:16:05,342 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 11 [2023-02-16 03:16:05,945 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 670 proven. 193 refuted. 0 times theorem prover too weak. 334 trivial. 354 not checked. [2023-02-16 03:16:05,945 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:16:06,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:16:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1713434779] [2023-02-16 03:16:06,293 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:16:06,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1054620577] [2023-02-16 03:16:06,293 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1054620577] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:16:06,293 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:16:06,293 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2023-02-16 03:16:06,293 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [162490236] [2023-02-16 03:16:06,293 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:16:06,293 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2023-02-16 03:16:06,293 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:16:06,294 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2023-02-16 03:16:06,294 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=68, Invalid=584, Unknown=6, NotChecked=98, Total=756 [2023-02-16 03:16:06,294 INFO L87 Difference]: Start difference. First operand 247 states and 276 transitions. Second operand has 26 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:16:08,323 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:10,338 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:12,411 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:14,477 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:16,596 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:18,722 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:22,847 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:24,995 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:29,126 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:16:43,332 WARN L233 SmtUtils]: Spent 6.47s on a formula simplification. DAG size of input: 56 DAG size of output: 48 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:17:01,495 WARN L233 SmtUtils]: Spent 17.12s on a formula simplification. DAG size of input: 65 DAG size of output: 57 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:17:24,036 WARN L233 SmtUtils]: Spent 21.67s on a formula simplification. DAG size of input: 74 DAG size of output: 66 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:17:28,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:17:28,349 INFO L93 Difference]: Finished difference Result 386 states and 445 transitions. [2023-02-16 03:17:28,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2023-02-16 03:17:28,349 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) Word has length 123 [2023-02-16 03:17:28,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:17:28,351 INFO L225 Difference]: With dead ends: 386 [2023-02-16 03:17:28,351 INFO L226 Difference]: Without dead ends: 386 [2023-02-16 03:17:28,351 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 141 GetRequests, 100 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 219 ImplicationChecksByTransitivity, 71.4s TimeCoverageRelationStatistics Valid=177, Invalid=1381, Unknown=10, NotChecked=154, Total=1722 [2023-02-16 03:17:28,352 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 358 mSDsluCounter, 1023 mSDsCounter, 0 mSdLazyCounter, 4130 mSolverCounterSat, 37 mSolverCounterUnsat, 9 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 22.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 366 SdHoareTripleChecker+Valid, 1105 SdHoareTripleChecker+Invalid, 4750 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 4130 IncrementalHoareTripleChecker+Invalid, 9 IncrementalHoareTripleChecker+Unknown, 574 IncrementalHoareTripleChecker+Unchecked, 22.7s IncrementalHoareTripleChecker+Time [2023-02-16 03:17:28,352 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [366 Valid, 1105 Invalid, 4750 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 4130 Invalid, 9 Unknown, 574 Unchecked, 22.7s Time] [2023-02-16 03:17:28,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 386 states. [2023-02-16 03:17:28,366 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 386 to 245. [2023-02-16 03:17:28,367 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 245 states, 157 states have (on average 1.605095541401274) internal successors, (252), 230 states have internal predecessors, (252), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:17:28,368 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 245 states to 245 states and 274 transitions. [2023-02-16 03:17:28,368 INFO L78 Accepts]: Start accepts. Automaton has 245 states and 274 transitions. Word has length 123 [2023-02-16 03:17:28,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:17:28,368 INFO L495 AbstractCegarLoop]: Abstraction has 245 states and 274 transitions. [2023-02-16 03:17:28,368 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 25 states have (on average 2.52) internal successors, (63), 24 states have internal predecessors, (63), 2 states have call successors, (6), 2 states have call predecessors, (6), 4 states have return successors, (6), 4 states have call predecessors, (6), 2 states have call successors, (6) [2023-02-16 03:17:28,368 INFO L276 IsEmpty]: Start isEmpty. Operand 245 states and 274 transitions. [2023-02-16 03:17:28,369 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-16 03:17:28,369 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:17:28,369 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:17:28,398 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-16 03:17:28,578 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2023-02-16 03:17:28,579 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:17:28,579 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:17:28,579 INFO L85 PathProgramCache]: Analyzing trace with hash -1492457719, now seen corresponding path program 1 times [2023-02-16 03:17:28,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:17:28,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [462469345] [2023-02-16 03:17:28,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:17:28,580 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:17:28,610 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:17:28,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [257465635] [2023-02-16 03:17:28,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:17:28,610 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:17:28,611 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:17:28,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:17:28,613 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2023-02-16 03:17:28,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:17:28,992 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 45 conjunts are in the unsatisfiable core [2023-02-16 03:17:28,995 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:17:29,006 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 [2023-02-16 03:17:29,060 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_3981 Int)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_3981))) (= 0 (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|)))) is different from true [2023-02-16 03:17:29,110 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:17:29,111 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 21 [2023-02-16 03:17:29,118 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3982 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_3982))) is different from true [2023-02-16 03:17:29,134 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3982 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_calloc_model_#res#1.base| v_ArrVal_3982))) is different from true [2023-02-16 03:17:29,137 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3982 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_~ptr~1#1.base| v_ArrVal_3982))) is different from true [2023-02-16 03:17:29,139 WARN L859 $PredicateComparison]: unable to prove that (exists ((v_ArrVal_3982 Int)) (= |c_#valid| (store |c_old(#valid)| |c_zalloc_or_die_#res#1.base| v_ArrVal_3982))) is different from true [2023-02-16 03:17:29,151 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:17:29,151 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 18 [2023-02-16 03:17:29,177 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (= |c_#valid| (store |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base| 1))) is different from true [2023-02-16 03:17:29,203 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:17:29,204 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 22 [2023-02-16 03:17:29,253 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 713 proven. 0 refuted. 0 times theorem prover too weak. 310 trivial. 528 not checked. [2023-02-16 03:17:29,253 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:17:29,644 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:17:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [462469345] [2023-02-16 03:17:29,644 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:17:29,644 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [257465635] [2023-02-16 03:17:29,644 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [257465635] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:17:29,644 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:17:29,644 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2023-02-16 03:17:29,644 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1130552507] [2023-02-16 03:17:29,644 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:17:29,645 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 19 states [2023-02-16 03:17:29,645 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:17:29,645 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2023-02-16 03:17:29,645 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=70, Invalid=368, Unknown=6, NotChecked=258, Total=702 [2023-02-16 03:17:29,646 INFO L87 Difference]: Start difference. First operand 245 states and 274 transitions. Second operand has 19 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 15 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 03:17:30,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:17:30,241 INFO L93 Difference]: Finished difference Result 380 states and 438 transitions. [2023-02-16 03:17:30,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2023-02-16 03:17:30,242 INFO L78 Accepts]: Start accepts. Automaton has has 19 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 15 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) Word has length 130 [2023-02-16 03:17:30,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:17:30,243 INFO L225 Difference]: With dead ends: 380 [2023-02-16 03:17:30,243 INFO L226 Difference]: Without dead ends: 380 [2023-02-16 03:17:30,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 150 SyntacticMatches, 5 SemanticMatches, 31 ConstructedPredicates, 6 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=130, Invalid=589, Unknown=7, NotChecked=330, Total=1056 [2023-02-16 03:17:30,244 INFO L413 NwaCegarLoop]: 186 mSDtfsCounter, 384 mSDsluCounter, 1371 mSDsCounter, 0 mSdLazyCounter, 1092 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 384 SdHoareTripleChecker+Valid, 1557 SdHoareTripleChecker+Invalid, 2770 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 1092 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 1635 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:17:30,244 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [384 Valid, 1557 Invalid, 2770 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 1092 Invalid, 0 Unknown, 1635 Unchecked, 0.4s Time] [2023-02-16 03:17:30,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 380 states. [2023-02-16 03:17:30,248 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 380 to 242. [2023-02-16 03:17:30,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 242 states, 157 states have (on average 1.585987261146497) internal successors, (249), 227 states have internal predecessors, (249), 11 states have call successors, (11), 3 states have call predecessors, (11), 3 states have return successors, (11), 11 states have call predecessors, (11), 11 states have call successors, (11) [2023-02-16 03:17:30,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 242 states to 242 states and 271 transitions. [2023-02-16 03:17:30,249 INFO L78 Accepts]: Start accepts. Automaton has 242 states and 271 transitions. Word has length 130 [2023-02-16 03:17:30,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:17:30,250 INFO L495 AbstractCegarLoop]: Abstraction has 242 states and 271 transitions. [2023-02-16 03:17:30,250 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 19 states, 17 states have (on average 3.9411764705882355) internal successors, (67), 15 states have internal predecessors, (67), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 03:17:30,250 INFO L276 IsEmpty]: Start isEmpty. Operand 242 states and 271 transitions. [2023-02-16 03:17:30,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 131 [2023-02-16 03:17:30,251 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:17:30,251 INFO L195 NwaCegarLoop]: trace histogram [48, 6, 6, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:17:30,272 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Forceful destruction successful, exit code 0 [2023-02-16 03:17:30,459 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable11 [2023-02-16 03:17:30,459 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 82 more)] === [2023-02-16 03:17:30,459 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:17:30,459 INFO L85 PathProgramCache]: Analyzing trace with hash -1492457718, now seen corresponding path program 1 times [2023-02-16 03:17:30,459 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:17:30,460 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1421410991] [2023-02-16 03:17:30,460 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:17:30,460 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:17:30,495 ERROR L245 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2023-02-16 03:17:30,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleZ3 [369213966] [2023-02-16 03:17:30,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:17:30,496 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:17:30,496 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:17:30,497 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:17:30,499 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (13)] Waiting until timeout for monitored process [2023-02-16 03:17:32,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:17:32,969 INFO L263 TraceCheckSpWp]: Trace formula consists of 1316 conjuncts, 126 conjunts are in the unsatisfiable core [2023-02-16 03:17:32,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:17:33,024 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 [2023-02-16 03:17:33,030 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 [2023-02-16 03:17:42,167 INFO L321 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2023-02-16 03:17:42,168 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 21 [2023-02-16 03:17:42,259 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 16 treesize of output 18 [2023-02-16 03:17:45,752 INFO L321 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2023-02-16 03:17:45,752 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 22 [2023-02-16 03:17:45,865 INFO L321 Elim1Store]: treesize reduction 36, result has 34.5 percent of original size [2023-02-16 03:17:45,865 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 22 treesize of output 33 [2023-02-16 03:17:47,272 WARN L859 $PredicateComparison]: unable to prove that (exists ((|zalloc_or_die_calloc_model_~ptr~0#1.base| Int)) (and (exists ((v_ArrVal_4633 Int)) (= |c_#length| (store |c_old(#length)| |zalloc_or_die_calloc_model_~ptr~0#1.base| v_ArrVal_4633))) (= 0 (select |c_old(#valid)| |zalloc_or_die_calloc_model_~ptr~0#1.base|)))) is different from true [2023-02-16 03:17:47,322 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:17:47,323 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 18 [2023-02-16 03:17:47,333 INFO L321 Elim1Store]: treesize reduction 8, result has 52.9 percent of original size [2023-02-16 03:17:47,334 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 16 treesize of output 18 [2023-02-16 03:17:48,606 INFO L134 CoverageAnalysis]: Checked inductivity of 1551 backedges. 468 proven. 580 refuted. 0 times theorem prover too weak. 176 trivial. 327 not checked. [2023-02-16 03:17:48,606 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:17:53,141 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:17:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1421410991] [2023-02-16 03:17:53,141 WARN L310 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: SMT_SOLVER_CANNOT_INTERPOLATE_INPUT [2023-02-16 03:17:53,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [369213966] [2023-02-16 03:17:53,141 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [369213966] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:17:53,141 INFO L184 FreeRefinementEngine]: Found 0 perfect and 1 imperfect interpolant sequences. [2023-02-16 03:17:53,141 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [39] total 39 [2023-02-16 03:17:53,141 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1799494678] [2023-02-16 03:17:53,141 INFO L85 oduleStraightlineAll]: Using 1 imperfect interpolants to construct interpolant automaton [2023-02-16 03:17:53,142 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 40 states [2023-02-16 03:17:53,142 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:17:53,142 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 40 interpolants. [2023-02-16 03:17:53,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=123, Invalid=1519, Unknown=2, NotChecked=78, Total=1722 [2023-02-16 03:17:53,143 INFO L87 Difference]: Start difference. First operand 242 states and 271 transitions. Second operand has 40 states, 37 states have (on average 2.2162162162162162) internal successors, (82), 36 states have internal predecessors, (82), 3 states have call successors, (6), 2 states have call predecessors, (6), 5 states have return successors, (6), 5 states have call predecessors, (6), 3 states have call successors, (6) [2023-02-16 03:17:55,187 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:17:57,280 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:01,415 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:05,593 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.02s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:07,706 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:09,833 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:13,973 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:18,113 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:20,256 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, Int], hasArrays=true, hasNonlinArith=true, quantifiers [0] [2023-02-16 03:18:39,695 WARN L233 SmtUtils]: Spent 6.19s on a formula simplification. DAG size of input: 57 DAG size of output: 40 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:18:47,015 WARN L233 SmtUtils]: Spent 6.49s on a formula simplification. DAG size of input: 73 DAG size of output: 45 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate)