./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/loop-acceleration/array3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 574ddb4e 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/loop-acceleration/array3.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 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea --- Real Ultimate output --- This is Ultimate 0.2.2-?-574ddb4 [2023-02-18 22:21:30,014 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-18 22:21:30,016 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-18 22:21:30,060 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-18 22:21:30,061 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-18 22:21:30,063 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-18 22:21:30,065 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-18 22:21:30,067 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-18 22:21:30,069 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-18 22:21:30,074 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-18 22:21:30,075 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-18 22:21:30,077 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-18 22:21:30,077 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-18 22:21:30,079 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-18 22:21:30,081 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-18 22:21:30,082 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-18 22:21:30,083 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-18 22:21:30,084 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-18 22:21:30,085 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-18 22:21:30,089 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-18 22:21:30,090 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-18 22:21:30,091 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-18 22:21:30,093 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-18 22:21:30,093 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-18 22:21:30,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-18 22:21:30,101 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-18 22:21:30,101 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-18 22:21:30,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-18 22:21:30,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-18 22:21:30,105 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-18 22:21:30,105 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-18 22:21:30,106 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-18 22:21:30,107 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-18 22:21:30,108 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-18 22:21:30,109 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-18 22:21:30,109 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-18 22:21:30,110 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-18 22:21:30,110 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-18 22:21:30,110 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-18 22:21:30,112 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-18 22:21:30,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-18 22:21:30,114 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-18 22:21:30,142 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-18 22:21:30,143 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-18 22:21:30,143 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-18 22:21:30,144 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-18 22:21:30,144 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-18 22:21:30,145 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-18 22:21:30,145 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-18 22:21:30,145 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-18 22:21:30,145 INFO L138 SettingsManager]: * Use SBE=true [2023-02-18 22:21:30,146 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-18 22:21:30,146 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-18 22:21:30,147 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-18 22:21:30,147 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-18 22:21:30,147 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-18 22:21:30,147 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-18 22:21:30,148 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-18 22:21:30,148 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-18 22:21:30,148 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-18 22:21:30,148 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-18 22:21:30,148 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-18 22:21:30,149 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-18 22:21:30,149 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-18 22:21:30,149 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-18 22:21:30,149 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-18 22:21:30,149 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-18 22:21:30,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:21:30,150 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-18 22:21:30,150 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-18 22:21:30,150 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-18 22:21:30,150 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-18 22:21:30,151 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-18 22:21:30,151 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-18 22:21:30,151 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-18 22:21:30,151 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-18 22:21:30,152 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9dfb76d38495bc50f893b9a1fbc1c4079ae42ab458f1c235795d8ebc0da579ea [2023-02-18 22:21:30,394 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-18 22:21:30,420 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-18 22:21:30,422 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-18 22:21:30,423 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-18 22:21:30,424 INFO L275 PluginConnector]: CDTParser initialized [2023-02-18 22:21:30,425 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/loop-acceleration/array3.i [2023-02-18 22:21:31,525 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-18 22:21:31,684 INFO L351 CDTParser]: Found 1 translation units. [2023-02-18 22:21:31,685 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i [2023-02-18 22:21:31,694 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f28facfc/da1b8597b5a34462927b0785e17af195/FLAGb1da876f9 [2023-02-18 22:21:31,707 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4f28facfc/da1b8597b5a34462927b0785e17af195 [2023-02-18 22:21:31,709 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-18 22:21:31,711 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-18 22:21:31,713 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-18 22:21:31,713 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-18 22:21:31,716 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-18 22:21:31,717 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,718 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@52919596 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31, skipping insertion in model container [2023-02-18 22:21:31,718 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,724 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-18 22:21:31,738 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-18 22:21:31,879 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i[846,859] [2023-02-18 22:21:31,895 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:21:31,901 INFO L203 MainTranslator]: Completed pre-run [2023-02-18 22:21:31,910 WARN L237 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/loop-acceleration/array3.i[846,859] [2023-02-18 22:21:31,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-18 22:21:31,925 INFO L208 MainTranslator]: Completed translation [2023-02-18 22:21:31,926 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31 WrapperNode [2023-02-18 22:21:31,926 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-18 22:21:31,927 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-18 22:21:31,927 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-18 22:21:31,927 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-18 22:21:31,932 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,937 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,949 INFO L138 Inliner]: procedures = 16, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 44 [2023-02-18 22:21:31,950 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-18 22:21:31,950 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-18 22:21:31,951 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-18 22:21:31,951 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-18 22:21:31,956 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,956 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,958 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,958 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,962 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,964 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,965 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,966 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,977 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-18 22:21:31,979 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-18 22:21:31,979 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-18 22:21:31,979 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-18 22:21:31,980 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (1/1) ... [2023-02-18 22:21:31,986 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-18 22:21:31,994 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:32,039 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) [2023-02-18 22:21:32,043 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 [2023-02-18 22:21:32,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-18 22:21:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-18 22:21:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-18 22:21:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2023-02-18 22:21:32,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-18 22:21:32,070 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-18 22:21:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2023-02-18 22:21:32,070 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-18 22:21:32,121 INFO L235 CfgBuilder]: Building ICFG [2023-02-18 22:21:32,123 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-18 22:21:32,220 INFO L276 CfgBuilder]: Performing block encoding [2023-02-18 22:21:32,224 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-18 22:21:32,225 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-18 22:21:32,226 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:21:32 BoogieIcfgContainer [2023-02-18 22:21:32,227 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-18 22:21:32,228 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-18 22:21:32,229 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-18 22:21:32,231 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-18 22:21:32,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.02 10:21:31" (1/3) ... [2023-02-18 22:21:32,232 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af58343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:21:32, skipping insertion in model container [2023-02-18 22:21:32,232 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.02 10:21:31" (2/3) ... [2023-02-18 22:21:32,233 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@af58343 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.02 10:21:32, skipping insertion in model container [2023-02-18 22:21:32,233 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.02 10:21:32" (3/3) ... [2023-02-18 22:21:32,234 INFO L112 eAbstractionObserver]: Analyzing ICFG array3.i [2023-02-18 22:21:32,249 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-18 22:21:32,249 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 6 error locations. [2023-02-18 22:21:32,286 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-18 22:21:32,291 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;@795a3e21, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-18 22:21:32,292 INFO L358 AbstractCegarLoop]: Starting to check reachability of 6 error locations. [2023-02-18 22:21:32,295 INFO L276 IsEmpty]: Start isEmpty. Operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:21:32,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-18 22:21:32,301 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:32,301 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-18 22:21:32,302 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:32,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:32,306 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2023-02-18 22:21:32,314 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:32,314 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1408645481] [2023-02-18 22:21:32,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:32,315 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:32,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:32,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:32,476 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:32,476 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1408645481] [2023-02-18 22:21:32,476 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1408645481] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:21:32,477 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:21:32,477 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 22:21:32,478 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889534670] [2023-02-18 22:21:32,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:21:32,482 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:21:32,482 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:32,510 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:21:32,511 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:21:32,512 INFO L87 Difference]: Start difference. First operand has 24 states, 17 states have (on average 1.7058823529411764) internal successors, (29), 23 states have internal predecessors, (29), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-02-18 22:21:32,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:32,538 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2023-02-18 22:21:32,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:21:32,542 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 [2023-02-18 22:21:32,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:32,548 INFO L225 Difference]: With dead ends: 22 [2023-02-18 22:21:32,549 INFO L226 Difference]: Without dead ends: 20 [2023-02-18 22:21:32,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:21:32,556 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 17 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:32,561 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 20 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:21:32,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2023-02-18 22:21:32,589 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2023-02-18 22:21:32,591 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 16 states have (on average 1.375) internal successors, (22), 19 states have internal predecessors, (22), 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) [2023-02-18 22:21:32,591 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2023-02-18 22:21:32,592 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 4 [2023-02-18 22:21:32,592 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:32,593 INFO L495 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2023-02-18 22:21:32,593 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-02-18 22:21:32,593 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2023-02-18 22:21:32,593 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-18 22:21:32,593 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:32,594 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-18 22:21:32,594 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-18 22:21:32,594 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:32,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:32,595 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2023-02-18 22:21:32,595 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:32,596 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1540736086] [2023-02-18 22:21:32,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:32,596 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:32,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:32,716 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:32,717 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:32,717 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1540736086] [2023-02-18 22:21:32,717 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1540736086] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:21:32,717 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:21:32,717 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-18 22:21:32,718 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [917455956] [2023-02-18 22:21:32,718 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:21:32,719 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-18 22:21:32,719 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:32,720 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-18 22:21:32,720 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:21:32,720 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-02-18 22:21:32,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:32,750 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2023-02-18 22:21:32,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-18 22:21:32,750 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 [2023-02-18 22:21:32,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:32,751 INFO L225 Difference]: With dead ends: 24 [2023-02-18 22:21:32,751 INFO L226 Difference]: Without dead ends: 24 [2023-02-18 22:21:32,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-18 22:21:32,753 INFO L413 NwaCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:32,753 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2 Valid, 26 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:21:32,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2023-02-18 22:21:32,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 22. [2023-02-18 22:21:32,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.3333333333333333) internal successors, (24), 21 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:21:32,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 24 transitions. [2023-02-18 22:21:32,760 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 24 transitions. Word has length 4 [2023-02-18 22:21:32,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:32,762 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 24 transitions. [2023-02-18 22:21:32,763 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 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) [2023-02-18 22:21:32,763 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 24 transitions. [2023-02-18 22:21:32,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2023-02-18 22:21:32,763 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:32,763 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:32,764 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-18 22:21:32,764 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:32,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:32,765 INFO L85 PathProgramCache]: Analyzing trace with hash 264435913, now seen corresponding path program 1 times [2023-02-18 22:21:32,765 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:32,765 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [526570155] [2023-02-18 22:21:32,765 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:32,766 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:32,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:32,905 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:32,905 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:32,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [526570155] [2023-02-18 22:21:32,906 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [526570155] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:32,906 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1206119840] [2023-02-18 22:21:32,906 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:32,907 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:32,907 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:32,961 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) [2023-02-18 22:21:32,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-18 22:21:33,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:33,017 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 22:21:33,021 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:33,066 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 [2023-02-18 22:21:33,083 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:33,083 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:21:33,107 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:33,107 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1206119840] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:21:33,107 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:21:33,107 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 6 [2023-02-18 22:21:33,108 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [625297088] [2023-02-18 22:21:33,108 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:21:33,108 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-18 22:21:33,109 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:33,109 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-18 22:21:33,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2023-02-18 22:21:33,110 INFO L87 Difference]: Start difference. First operand 22 states and 24 transitions. Second operand has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-02-18 22:21:33,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:33,214 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2023-02-18 22:21:33,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-18 22:21:33,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 8 [2023-02-18 22:21:33,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:33,218 INFO L225 Difference]: With dead ends: 36 [2023-02-18 22:21:33,218 INFO L226 Difference]: Without dead ends: 36 [2023-02-18 22:21:33,219 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=31, Unknown=0, NotChecked=0, Total=56 [2023-02-18 22:21:33,222 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 19 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 55 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 59 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 55 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:33,224 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [19 Valid, 30 Invalid, 59 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 55 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:21:33,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2023-02-18 22:21:33,231 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2023-02-18 22:21:33,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 30 states have (on average 1.2666666666666666) internal successors, (38), 33 states have internal predecessors, (38), 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) [2023-02-18 22:21:33,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2023-02-18 22:21:33,235 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 8 [2023-02-18 22:21:33,235 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:33,235 INFO L495 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2023-02-18 22:21:33,235 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 3.0) internal successors, (18), 7 states have internal predecessors, (18), 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) [2023-02-18 22:21:33,235 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2023-02-18 22:21:33,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2023-02-18 22:21:33,236 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:33,236 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1] [2023-02-18 22:21:33,248 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-18 22:21:33,442 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:33,443 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:33,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:33,443 INFO L85 PathProgramCache]: Analyzing trace with hash -4646107, now seen corresponding path program 1 times [2023-02-18 22:21:33,444 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:33,444 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1765250429] [2023-02-18 22:21:33,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:33,444 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:33,575 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:33,577 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:33,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1765250429] [2023-02-18 22:21:33,578 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1765250429] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:33,578 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [908898305] [2023-02-18 22:21:33,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:33,579 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:33,579 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:33,584 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) [2023-02-18 22:21:33,603 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-18 22:21:33,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:33,639 INFO L263 TraceCheckSpWp]: Trace formula consists of 68 conjuncts, 4 conjunts are in the unsatisfiable core [2023-02-18 22:21:33,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:33,669 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:33,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:21:33,702 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:33,704 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [908898305] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:21:33,707 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:21:33,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 5, 5] total 11 [2023-02-18 22:21:33,707 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972109730] [2023-02-18 22:21:33,707 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:21:33,710 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2023-02-18 22:21:33,710 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:33,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2023-02-18 22:21:33,713 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=62, Unknown=0, NotChecked=0, Total=110 [2023-02-18 22:21:33,713 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-02-18 22:21:33,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:33,870 INFO L93 Difference]: Finished difference Result 112 states and 114 transitions. [2023-02-18 22:21:33,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-18 22:21:33,871 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 13 [2023-02-18 22:21:33,871 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:33,875 INFO L225 Difference]: With dead ends: 112 [2023-02-18 22:21:33,875 INFO L226 Difference]: Without dead ends: 112 [2023-02-18 22:21:33,876 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=93, Invalid=147, Unknown=0, NotChecked=0, Total=240 [2023-02-18 22:21:33,877 INFO L413 NwaCegarLoop]: 12 mSDtfsCounter, 208 mSDsluCounter, 46 mSDsCounter, 0 mSdLazyCounter, 73 mSolverCounterSat, 20 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 208 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 93 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 20 IncrementalHoareTripleChecker+Valid, 73 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:33,879 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [208 Valid, 58 Invalid, 93 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [20 Valid, 73 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:21:33,882 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2023-02-18 22:21:33,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 64. [2023-02-18 22:21:33,896 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 60 states have (on average 1.3) internal successors, (78), 63 states have internal predecessors, (78), 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) [2023-02-18 22:21:33,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2023-02-18 22:21:33,898 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 13 [2023-02-18 22:21:33,898 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:33,899 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2023-02-18 22:21:33,899 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 11 states have (on average 3.1818181818181817) internal successors, (35), 11 states have internal predecessors, (35), 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) [2023-02-18 22:21:33,899 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2023-02-18 22:21:33,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-18 22:21:33,900 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:33,900 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 4, 1, 1, 1] [2023-02-18 22:21:33,912 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-18 22:21:34,113 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,SelfDestructingSolverStorable3 [2023-02-18 22:21:34,113 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:34,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:34,114 INFO L85 PathProgramCache]: Analyzing trace with hash -2061457070, now seen corresponding path program 2 times [2023-02-18 22:21:34,114 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:34,114 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [498368384] [2023-02-18 22:21:34,115 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:34,115 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:34,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:34,291 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 0 proven. 32 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:34,292 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:34,292 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [498368384] [2023-02-18 22:21:34,292 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [498368384] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:34,293 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1637852931] [2023-02-18 22:21:34,293 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 22:21:34,293 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:34,293 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:34,294 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) [2023-02-18 22:21:34,323 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-18 22:21:34,349 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 22:21:34,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 22:21:34,352 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 11 conjunts are in the unsatisfiable core [2023-02-18 22:21:34,354 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:34,367 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 [2023-02-18 22:21:34,443 INFO L134 CoverageAnalysis]: Checked inductivity of 32 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:34,443 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:21:34,444 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1637852931] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:21:34,444 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 22:21:34,444 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [6] total 12 [2023-02-18 22:21:34,444 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [636122116] [2023-02-18 22:21:34,444 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:21:34,445 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-18 22:21:34,445 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:34,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-18 22:21:34,446 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-18 22:21:34,446 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:21:34,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:34,539 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2023-02-18 22:21:34,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-18 22:21:34,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2023-02-18 22:21:34,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:34,542 INFO L225 Difference]: With dead ends: 83 [2023-02-18 22:21:34,542 INFO L226 Difference]: Without dead ends: 83 [2023-02-18 22:21:34,542 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2023-02-18 22:21:34,543 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 49 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 112 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 77 SdHoareTripleChecker+Invalid, 119 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 112 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:34,543 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 77 Invalid, 119 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 112 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:21:34,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2023-02-18 22:21:34,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 63. [2023-02-18 22:21:34,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 63 states, 60 states have (on average 1.2666666666666666) internal successors, (76), 62 states have internal predecessors, (76), 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) [2023-02-18 22:21:34,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 76 transitions. [2023-02-18 22:21:34,555 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 76 transitions. Word has length 20 [2023-02-18 22:21:34,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:34,556 INFO L495 AbstractCegarLoop]: Abstraction has 63 states and 76 transitions. [2023-02-18 22:21:34,556 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:21:34,556 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 76 transitions. [2023-02-18 22:21:34,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 22:21:34,557 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:34,557 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:34,564 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Ended with exit code 0 [2023-02-18 22:21:34,762 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:34,762 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:34,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:34,763 INFO L85 PathProgramCache]: Analyzing trace with hash 153628198, now seen corresponding path program 1 times [2023-02-18 22:21:34,763 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:34,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230877710] [2023-02-18 22:21:34,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:34,763 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:34,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:34,834 INFO L134 CoverageAnalysis]: Checked inductivity of 66 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 66 trivial. 0 not checked. [2023-02-18 22:21:34,834 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:34,834 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230877710] [2023-02-18 22:21:34,835 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230877710] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:21:34,835 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-18 22:21:34,835 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-18 22:21:34,835 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632114309] [2023-02-18 22:21:34,835 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:21:34,836 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 22:21:34,836 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:34,836 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 22:21:34,836 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-18 22:21:34,837 INFO L87 Difference]: Start difference. First operand 63 states and 76 transitions. Second operand has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:21:34,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:34,857 INFO L93 Difference]: Finished difference Result 68 states and 80 transitions. [2023-02-18 22:21:34,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-18 22:21:34,857 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 33 [2023-02-18 22:21:34,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:34,858 INFO L225 Difference]: With dead ends: 68 [2023-02-18 22:21:34,858 INFO L226 Difference]: Without dead ends: 68 [2023-02-18 22:21:34,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-18 22:21:34,859 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 14 mSDsluCounter, 18 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 27 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:34,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 31 Invalid, 27 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-18 22:21:34,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2023-02-18 22:21:34,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 65. [2023-02-18 22:21:34,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 62 states have (on average 1.2580645161290323) internal successors, (78), 64 states have internal predecessors, (78), 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) [2023-02-18 22:21:34,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2023-02-18 22:21:34,863 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 33 [2023-02-18 22:21:34,863 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:34,863 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2023-02-18 22:21:34,863 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-18 22:21:34,864 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2023-02-18 22:21:34,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-18 22:21:34,864 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:34,865 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:34,865 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-18 22:21:34,865 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:34,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:34,865 INFO L85 PathProgramCache]: Analyzing trace with hash 153681776, now seen corresponding path program 1 times [2023-02-18 22:21:34,866 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:34,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1502433083] [2023-02-18 22:21:34,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:34,866 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:34,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:34,952 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:34,953 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:34,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1502433083] [2023-02-18 22:21:34,953 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1502433083] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:34,953 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [597186767] [2023-02-18 22:21:34,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:34,954 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:34,954 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:34,955 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) [2023-02-18 22:21:34,967 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2023-02-18 22:21:35,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:35,020 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 22:21:35,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:35,066 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:35,066 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:21:35,136 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 0 proven. 66 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:35,136 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [597186767] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:21:35,137 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:21:35,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 17 [2023-02-18 22:21:35,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113122596] [2023-02-18 22:21:35,137 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:21:35,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2023-02-18 22:21:35,140 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:35,141 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2023-02-18 22:21:35,141 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-02-18 22:21:35,142 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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) [2023-02-18 22:21:35,301 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:35,301 INFO L93 Difference]: Finished difference Result 236 states and 238 transitions. [2023-02-18 22:21:35,301 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2023-02-18 22:21:35,301 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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 33 [2023-02-18 22:21:35,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:35,304 INFO L225 Difference]: With dead ends: 236 [2023-02-18 22:21:35,304 INFO L226 Difference]: Without dead ends: 236 [2023-02-18 22:21:35,304 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 52 SyntacticMatches, 6 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=136, Invalid=136, Unknown=0, NotChecked=0, Total=272 [2023-02-18 22:21:35,305 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 294 mSDsluCounter, 115 mSDsCounter, 0 mSdLazyCounter, 125 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 294 SdHoareTripleChecker+Valid, 128 SdHoareTripleChecker+Invalid, 163 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 125 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:35,306 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [294 Valid, 128 Invalid, 163 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 125 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-18 22:21:35,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2023-02-18 22:21:35,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 129. [2023-02-18 22:21:35,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 126 states have (on average 1.253968253968254) internal successors, (158), 128 states have internal predecessors, (158), 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) [2023-02-18 22:21:35,323 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 158 transitions. [2023-02-18 22:21:35,323 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 158 transitions. Word has length 33 [2023-02-18 22:21:35,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:35,324 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 158 transitions. [2023-02-18 22:21:35,324 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 17 states have (on average 3.764705882352941) internal successors, (64), 17 states have internal predecessors, (64), 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) [2023-02-18 22:21:35,324 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 158 transitions. [2023-02-18 22:21:35,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2023-02-18 22:21:35,326 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:35,327 INFO L195 NwaCegarLoop]: trace histogram [14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:35,332 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2023-02-18 22:21:35,531 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:35,532 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:35,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:35,532 INFO L85 PathProgramCache]: Analyzing trace with hash 1641667672, now seen corresponding path program 2 times [2023-02-18 22:21:35,532 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:35,532 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1160786480] [2023-02-18 22:21:35,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:35,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:35,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:35,839 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:35,839 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:35,839 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1160786480] [2023-02-18 22:21:35,840 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1160786480] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:35,840 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1722642561] [2023-02-18 22:21:35,840 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 22:21:35,840 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:35,840 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:35,841 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) [2023-02-18 22:21:35,868 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2023-02-18 22:21:35,930 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2023-02-18 22:21:35,931 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 22:21:35,932 INFO L263 TraceCheckSpWp]: Trace formula consists of 246 conjuncts, 16 conjunts are in the unsatisfiable core [2023-02-18 22:21:35,936 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:36,050 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:36,051 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:21:36,376 INFO L134 CoverageAnalysis]: Checked inductivity of 379 backedges. 0 proven. 378 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:36,376 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1722642561] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:21:36,376 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:21:36,376 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 17, 17] total 33 [2023-02-18 22:21:36,376 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456019795] [2023-02-18 22:21:36,377 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:21:36,378 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 33 states [2023-02-18 22:21:36,378 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:36,379 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 33 interpolants. [2023-02-18 22:21:36,380 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 22:21:36,380 INFO L87 Difference]: Start difference. First operand 129 states and 158 transitions. Second operand has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 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) [2023-02-18 22:21:36,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:36,743 INFO L93 Difference]: Finished difference Result 492 states and 494 transitions. [2023-02-18 22:21:36,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 32 states. [2023-02-18 22:21:36,744 INFO L78 Accepts]: Start accepts. Automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 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 65 [2023-02-18 22:21:36,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:36,748 INFO L225 Difference]: With dead ends: 492 [2023-02-18 22:21:36,748 INFO L226 Difference]: Without dead ends: 492 [2023-02-18 22:21:36,748 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 100 SyntacticMatches, 14 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=528, Invalid=528, Unknown=0, NotChecked=0, Total=1056 [2023-02-18 22:21:36,749 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 995 mSDsluCounter, 247 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 110 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 995 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 371 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 110 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:36,750 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [995 Valid, 260 Invalid, 371 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [110 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-18 22:21:36,750 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 492 states. [2023-02-18 22:21:36,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 492 to 257. [2023-02-18 22:21:36,763 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 257 states, 254 states have (on average 1.2519685039370079) internal successors, (318), 256 states have internal predecessors, (318), 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) [2023-02-18 22:21:36,764 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 257 states to 257 states and 318 transitions. [2023-02-18 22:21:36,764 INFO L78 Accepts]: Start accepts. Automaton has 257 states and 318 transitions. Word has length 65 [2023-02-18 22:21:36,765 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:36,766 INFO L495 AbstractCegarLoop]: Abstraction has 257 states and 318 transitions. [2023-02-18 22:21:36,766 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 33 states, 33 states have (on average 3.878787878787879) internal successors, (128), 33 states have internal predecessors, (128), 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) [2023-02-18 22:21:36,766 INFO L276 IsEmpty]: Start isEmpty. Operand 257 states and 318 transitions. [2023-02-18 22:21:36,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2023-02-18 22:21:36,772 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:36,772 INFO L195 NwaCegarLoop]: trace histogram [30, 30, 30, 30, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:36,781 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2023-02-18 22:21:36,978 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:36,978 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:36,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:36,979 INFO L85 PathProgramCache]: Analyzing trace with hash 1156757032, now seen corresponding path program 3 times [2023-02-18 22:21:36,979 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:36,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2014112188] [2023-02-18 22:21:36,979 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:36,979 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:37,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:37,880 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1770 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-18 22:21:37,881 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:37,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2014112188] [2023-02-18 22:21:37,881 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2014112188] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:37,881 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [964601980] [2023-02-18 22:21:37,881 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2023-02-18 22:21:37,881 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:37,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:37,885 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) [2023-02-18 22:21:37,904 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2023-02-18 22:21:37,957 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2023-02-18 22:21:37,957 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 22:21:37,958 INFO L263 TraceCheckSpWp]: Trace formula consists of 64 conjuncts, 9 conjunts are in the unsatisfiable core [2023-02-18 22:21:37,971 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:37,982 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 [2023-02-18 22:21:38,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-02-18 22:21:38,060 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:21:38,147 INFO L134 CoverageAnalysis]: Checked inductivity of 1771 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1770 trivial. 0 not checked. [2023-02-18 22:21:38,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [964601980] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:21:38,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:21:38,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [33, 4, 4] total 39 [2023-02-18 22:21:38,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287556196] [2023-02-18 22:21:38,149 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:21:38,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 39 states [2023-02-18 22:21:38,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:38,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 39 interpolants. [2023-02-18 22:21:38,151 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=610, Invalid=872, Unknown=0, NotChecked=0, Total=1482 [2023-02-18 22:21:38,151 INFO L87 Difference]: Start difference. First operand 257 states and 318 transitions. Second operand has 39 states, 39 states have (on average 3.923076923076923) internal successors, (153), 39 states have internal predecessors, (153), 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) [2023-02-18 22:21:39,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:39,309 INFO L93 Difference]: Finished difference Result 500 states and 506 transitions. [2023-02-18 22:21:39,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 67 states. [2023-02-18 22:21:39,309 INFO L78 Accepts]: Start accepts. Automaton has has 39 states, 39 states have (on average 3.923076923076923) internal successors, (153), 39 states have internal predecessors, (153), 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 129 [2023-02-18 22:21:39,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:39,311 INFO L225 Difference]: With dead ends: 500 [2023-02-18 22:21:39,311 INFO L226 Difference]: Without dead ends: 500 [2023-02-18 22:21:39,313 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 320 GetRequests, 252 SyntacticMatches, 0 SemanticMatches, 68 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 775 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=1757, Invalid=3073, Unknown=0, NotChecked=0, Total=4830 [2023-02-18 22:21:39,313 INFO L413 NwaCegarLoop]: 14 mSDtfsCounter, 1917 mSDsluCounter, 243 mSDsCounter, 0 mSdLazyCounter, 326 mSolverCounterSat, 165 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1917 SdHoareTripleChecker+Valid, 257 SdHoareTripleChecker+Invalid, 491 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 165 IncrementalHoareTripleChecker+Valid, 326 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:39,314 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [1917 Valid, 257 Invalid, 491 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [165 Valid, 326 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-18 22:21:39,314 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 500 states. [2023-02-18 22:21:39,321 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 500 to 271. [2023-02-18 22:21:39,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 271 states, 268 states have (on average 1.1417910447761195) internal successors, (306), 270 states have internal predecessors, (306), 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) [2023-02-18 22:21:39,322 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 271 states to 271 states and 306 transitions. [2023-02-18 22:21:39,323 INFO L78 Accepts]: Start accepts. Automaton has 271 states and 306 transitions. Word has length 129 [2023-02-18 22:21:39,323 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:39,323 INFO L495 AbstractCegarLoop]: Abstraction has 271 states and 306 transitions. [2023-02-18 22:21:39,323 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 39 states, 39 states have (on average 3.923076923076923) internal successors, (153), 39 states have internal predecessors, (153), 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) [2023-02-18 22:21:39,323 INFO L276 IsEmpty]: Start isEmpty. Operand 271 states and 306 transitions. [2023-02-18 22:21:39,324 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2023-02-18 22:21:39,324 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:39,324 INFO L195 NwaCegarLoop]: trace histogram [31, 31, 31, 31, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:39,335 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2023-02-18 22:21:39,529 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:39,530 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:39,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:39,530 INFO L85 PathProgramCache]: Analyzing trace with hash 1517991899, now seen corresponding path program 1 times [2023-02-18 22:21:39,530 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:39,530 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [46344528] [2023-02-18 22:21:39,530 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:39,530 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:39,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:40,386 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:40,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:40,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [46344528] [2023-02-18 22:21:40,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [46344528] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:40,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1744103275] [2023-02-18 22:21:40,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:40,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:40,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:40,388 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) [2023-02-18 22:21:40,412 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2023-02-18 22:21:40,515 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:40,518 INFO L263 TraceCheckSpWp]: Trace formula consists of 490 conjuncts, 33 conjunts are in the unsatisfiable core [2023-02-18 22:21:40,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:40,975 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:40,975 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:21:42,087 INFO L134 CoverageAnalysis]: Checked inductivity of 1891 backedges. 0 proven. 1891 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:42,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1744103275] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:21:42,088 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:21:42,088 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [34, 34, 34] total 67 [2023-02-18 22:21:42,088 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613859173] [2023-02-18 22:21:42,088 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:21:42,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 67 states [2023-02-18 22:21:42,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:42,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 67 interpolants. [2023-02-18 22:21:42,092 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2023-02-18 22:21:42,092 INFO L87 Difference]: Start difference. First operand 271 states and 306 transitions. Second operand has 67 states, 67 states have (on average 3.955223880597015) internal successors, (265), 67 states have internal predecessors, (265), 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) [2023-02-18 22:21:43,329 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:43,329 INFO L93 Difference]: Finished difference Result 1004 states and 1006 transitions. [2023-02-18 22:21:43,329 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 66 states. [2023-02-18 22:21:43,330 INFO L78 Accepts]: Start accepts. Automaton has has 67 states, 67 states have (on average 3.955223880597015) internal successors, (265), 67 states have internal predecessors, (265), 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 134 [2023-02-18 22:21:43,330 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:43,333 INFO L225 Difference]: With dead ends: 1004 [2023-02-18 22:21:43,333 INFO L226 Difference]: Without dead ends: 1004 [2023-02-18 22:21:43,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 300 GetRequests, 204 SyntacticMatches, 31 SemanticMatches, 65 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 650 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=2211, Invalid=2211, Unknown=0, NotChecked=0, Total=4422 [2023-02-18 22:21:43,335 INFO L413 NwaCegarLoop]: 13 mSDtfsCounter, 2376 mSDsluCounter, 515 mSDsCounter, 0 mSdLazyCounter, 494 mSolverCounterSat, 264 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2376 SdHoareTripleChecker+Valid, 528 SdHoareTripleChecker+Invalid, 758 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 264 IncrementalHoareTripleChecker+Valid, 494 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:43,335 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [2376 Valid, 528 Invalid, 758 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [264 Valid, 494 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-18 22:21:43,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1004 states. [2023-02-18 22:21:43,343 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1004 to 529. [2023-02-18 22:21:43,343 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 529 states, 526 states have (on average 1.1901140684410647) internal successors, (626), 528 states have internal predecessors, (626), 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) [2023-02-18 22:21:43,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 529 states to 529 states and 626 transitions. [2023-02-18 22:21:43,345 INFO L78 Accepts]: Start accepts. Automaton has 529 states and 626 transitions. Word has length 134 [2023-02-18 22:21:43,345 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:43,345 INFO L495 AbstractCegarLoop]: Abstraction has 529 states and 626 transitions. [2023-02-18 22:21:43,345 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 67 states, 67 states have (on average 3.955223880597015) internal successors, (265), 67 states have internal predecessors, (265), 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) [2023-02-18 22:21:43,345 INFO L276 IsEmpty]: Start isEmpty. Operand 529 states and 626 transitions. [2023-02-18 22:21:43,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 267 [2023-02-18 22:21:43,347 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:43,347 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:43,352 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2023-02-18 22:21:43,552 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:43,552 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:43,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:43,553 INFO L85 PathProgramCache]: Analyzing trace with hash 935209982, now seen corresponding path program 2 times [2023-02-18 22:21:43,553 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:43,553 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2143975529] [2023-02-18 22:21:43,553 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:43,553 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:43,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:46,556 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-18 22:21:46,556 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:46,556 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2143975529] [2023-02-18 22:21:46,556 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2143975529] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:46,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455352425] [2023-02-18 22:21:46,557 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2023-02-18 22:21:46,557 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:46,557 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:46,573 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) [2023-02-18 22:21:46,575 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2023-02-18 22:21:46,665 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2023-02-18 22:21:46,665 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 22:21:46,666 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 8 conjunts are in the unsatisfiable core [2023-02-18 22:21:46,676 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:46,921 WARN L859 $PredicateComparison]: unable to prove that (exists ((|v_ULTIMATE.start_main_~#A~0#1.base_17| Int)) (and (= |c_#valid| (store |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_17| 0)) (= 0 (select |c_ULTIMATE.start_main_old_#valid#1| |v_ULTIMATE.start_main_~#A~0#1.base_17|)))) is different from true [2023-02-18 22:21:46,931 INFO L134 CoverageAnalysis]: Checked inductivity of 8128 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-02-18 22:21:46,932 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2023-02-18 22:21:46,932 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455352425] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-18 22:21:46,932 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2023-02-18 22:21:46,932 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [67] total 69 [2023-02-18 22:21:46,933 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1455682552] [2023-02-18 22:21:46,933 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-18 22:21:46,934 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-18 22:21:46,934 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:46,934 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-18 22:21:46,935 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=2215, Invalid=2344, Unknown=1, NotChecked=132, Total=4692 [2023-02-18 22:21:46,936 INFO L87 Difference]: Start difference. First operand 529 states and 626 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-02-18 22:21:46,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:21:46,955 INFO L93 Difference]: Finished difference Result 528 states and 625 transitions. [2023-02-18 22:21:46,955 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-18 22:21:46,956 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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 266 [2023-02-18 22:21:46,956 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:21:46,958 INFO L225 Difference]: With dead ends: 528 [2023-02-18 22:21:46,958 INFO L226 Difference]: Without dead ends: 524 [2023-02-18 22:21:46,959 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 332 GetRequests, 265 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 64 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=2215, Invalid=2344, Unknown=1, NotChecked=132, Total=4692 [2023-02-18 22:21:46,973 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 7 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 19 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-18 22:21:46,974 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 16 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 19 Unchecked, 0.0s Time] [2023-02-18 22:21:46,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 524 states. [2023-02-18 22:21:46,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 524 to 524. [2023-02-18 22:21:46,980 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 524 states, 522 states have (on average 1.1877394636015326) internal successors, (620), 523 states have internal predecessors, (620), 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) [2023-02-18 22:21:46,981 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 524 states to 524 states and 620 transitions. [2023-02-18 22:21:46,982 INFO L78 Accepts]: Start accepts. Automaton has 524 states and 620 transitions. Word has length 266 [2023-02-18 22:21:46,982 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:21:46,982 INFO L495 AbstractCegarLoop]: Abstraction has 524 states and 620 transitions. [2023-02-18 22:21:46,982 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 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) [2023-02-18 22:21:46,983 INFO L276 IsEmpty]: Start isEmpty. Operand 524 states and 620 transitions. [2023-02-18 22:21:46,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 270 [2023-02-18 22:21:46,985 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:21:46,985 INFO L195 NwaCegarLoop]: trace histogram [64, 64, 64, 64, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-18 22:21:47,015 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2023-02-18 22:21:47,198 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,SelfDestructingSolverStorable10 [2023-02-18 22:21:47,199 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:21:47,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:21:47,199 INFO L85 PathProgramCache]: Analyzing trace with hash 1472225807, now seen corresponding path program 1 times [2023-02-18 22:21:47,199 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:21:47,199 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [239036281] [2023-02-18 22:21:47,199 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:47,200 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:21:47,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:47,445 INFO L134 CoverageAnalysis]: Checked inductivity of 8130 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 8128 trivial. 0 not checked. [2023-02-18 22:21:47,445 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:21:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [239036281] [2023-02-18 22:21:47,446 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [239036281] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:21:47,446 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [525362407] [2023-02-18 22:21:47,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:21:47,446 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:21:47,446 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:21:47,447 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) [2023-02-18 22:21:47,470 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2023-02-18 22:21:47,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:21:47,685 INFO L263 TraceCheckSpWp]: Trace formula consists of 960 conjuncts, 66 conjunts are in the unsatisfiable core [2023-02-18 22:21:47,688 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:21:49,295 INFO L134 CoverageAnalysis]: Checked inductivity of 8130 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 22:21:49,296 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:21:53,302 INFO L134 CoverageAnalysis]: Checked inductivity of 8130 backedges. 0 proven. 8128 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2023-02-18 22:21:53,302 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [525362407] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:21:53,303 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:21:53,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 67, 67] total 134 [2023-02-18 22:21:53,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69376366] [2023-02-18 22:21:53,303 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:21:53,305 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 134 states [2023-02-18 22:21:53,305 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:21:53,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 134 interpolants. [2023-02-18 22:21:53,312 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8780, Invalid=9042, Unknown=0, NotChecked=0, Total=17822 [2023-02-18 22:21:53,313 INFO L87 Difference]: Start difference. First operand 524 states and 620 transitions. Second operand has 134 states, 134 states have (on average 4.037313432835821) internal successors, (541), 134 states have internal predecessors, (541), 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) [2023-02-18 22:22:03,942 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:22:03,942 INFO L93 Difference]: Finished difference Result 1407 states and 1409 transitions. [2023-02-18 22:22:03,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 261 states. [2023-02-18 22:22:03,943 INFO L78 Accepts]: Start accepts. Automaton has has 134 states, 134 states have (on average 4.037313432835821) internal successors, (541), 134 states have internal predecessors, (541), 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 269 [2023-02-18 22:22:03,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:22:03,946 INFO L225 Difference]: With dead ends: 1407 [2023-02-18 22:22:03,946 INFO L226 Difference]: Without dead ends: 1149 [2023-02-18 22:22:03,956 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 670 GetRequests, 408 SyntacticMatches, 1 SemanticMatches, 261 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10658 ImplicationChecksByTransitivity, 10.5s TimeCoverageRelationStatistics Valid=25808, Invalid=43098, Unknown=0, NotChecked=0, Total=68906 [2023-02-18 22:22:03,957 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 3367 mSDsluCounter, 404 mSDsCounter, 0 mSdLazyCounter, 1030 mSolverCounterSat, 782 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3367 SdHoareTripleChecker+Valid, 414 SdHoareTripleChecker+Invalid, 1812 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 782 IncrementalHoareTripleChecker+Valid, 1030 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:22:03,957 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [3367 Valid, 414 Invalid, 1812 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [782 Valid, 1030 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2023-02-18 22:22:03,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1149 states. [2023-02-18 22:22:03,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1149 to 1052. [2023-02-18 22:22:03,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 1052 states, 1050 states have (on average 1.0961904761904762) internal successors, (1151), 1051 states have internal predecessors, (1151), 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) [2023-02-18 22:22:03,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1052 states to 1052 states and 1151 transitions. [2023-02-18 22:22:03,971 INFO L78 Accepts]: Start accepts. Automaton has 1052 states and 1151 transitions. Word has length 269 [2023-02-18 22:22:03,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:22:03,972 INFO L495 AbstractCegarLoop]: Abstraction has 1052 states and 1151 transitions. [2023-02-18 22:22:03,972 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 134 states, 134 states have (on average 4.037313432835821) internal successors, (541), 134 states have internal predecessors, (541), 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) [2023-02-18 22:22:03,973 INFO L276 IsEmpty]: Start isEmpty. Operand 1052 states and 1151 transitions. [2023-02-18 22:22:03,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 658 [2023-02-18 22:22:03,983 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:22:03,983 INFO L195 NwaCegarLoop]: trace histogram [130, 130, 130, 130, 33, 33, 33, 33, 1, 1, 1, 1, 1] [2023-02-18 22:22:03,989 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2023-02-18 22:22:04,188 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:22:04,189 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:22:04,189 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:22:04,189 INFO L85 PathProgramCache]: Analyzing trace with hash -205306276, now seen corresponding path program 4 times [2023-02-18 22:22:04,189 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:22:04,190 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1974212239] [2023-02-18 22:22:04,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:22:04,190 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:22:04,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:22:15,386 INFO L134 CoverageAnalysis]: Checked inductivity of 35815 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-02-18 22:22:15,387 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:22:15,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1974212239] [2023-02-18 22:22:15,387 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1974212239] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:22:15,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [425138331] [2023-02-18 22:22:15,387 INFO L93 rtionOrderModulation]: Changing assertion order to TERMS_WITH_SMALL_CONSTANTS_FIRST [2023-02-18 22:22:15,387 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:22:15,388 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:22:15,389 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) [2023-02-18 22:22:15,390 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Waiting until timeout for monitored process [2023-02-18 22:24:23,940 INFO L228 tOrderPrioritization]: Assert order TERMS_WITH_SMALL_CONSTANTS_FIRST issued 0 check-sat command(s) [2023-02-18 22:24:23,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2023-02-18 22:24:23,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 2190 conjuncts, 132 conjunts are in the unsatisfiable core [2023-02-18 22:24:23,978 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-18 22:24:29,107 INFO L134 CoverageAnalysis]: Checked inductivity of 35815 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-02-18 22:24:29,108 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-18 22:24:44,326 INFO L134 CoverageAnalysis]: Checked inductivity of 35815 backedges. 0 proven. 33670 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-02-18 22:24:44,327 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [425138331] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-18 22:24:44,327 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-18 22:24:44,327 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [133, 133, 133] total 265 [2023-02-18 22:24:44,327 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2129132020] [2023-02-18 22:24:44,327 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-18 22:24:44,329 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 265 states [2023-02-18 22:24:44,329 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-18 22:24:44,339 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 265 interpolants. [2023-02-18 22:24:44,346 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34980, Invalid=34980, Unknown=0, NotChecked=0, Total=69960 [2023-02-18 22:24:44,347 INFO L87 Difference]: Start difference. First operand 1052 states and 1151 transitions. Second operand has 265 states, 265 states have (on average 3.9849056603773585) internal successors, (1056), 265 states have internal predecessors, (1056), 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) [2023-02-18 22:25:31,358 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-18 22:25:31,358 INFO L93 Difference]: Finished difference Result 2865 states and 2867 transitions. [2023-02-18 22:25:31,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 264 states. [2023-02-18 22:25:31,359 INFO L78 Accepts]: Start accepts. Automaton has has 265 states, 265 states have (on average 3.9849056603773585) internal successors, (1056), 265 states have internal predecessors, (1056), 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 657 [2023-02-18 22:25:31,360 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-18 22:25:31,366 INFO L225 Difference]: With dead ends: 2865 [2023-02-18 22:25:31,366 INFO L226 Difference]: Without dead ends: 2865 [2023-02-18 22:25:31,370 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 1445 GetRequests, 1052 SyntacticMatches, 130 SemanticMatches, 263 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9164 ImplicationChecksByTransitivity, 25.3s TimeCoverageRelationStatistics Valid=34980, Invalid=34980, Unknown=0, NotChecked=0, Total=69960 [2023-02-18 22:25:31,371 INFO L413 NwaCegarLoop]: 10 mSDtfsCounter, 6564 mSDsluCounter, 942 mSDsCounter, 0 mSdLazyCounter, 1963 mSolverCounterSat, 1273 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6564 SdHoareTripleChecker+Valid, 952 SdHoareTripleChecker+Invalid, 3236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1273 IncrementalHoareTripleChecker+Valid, 1963 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.1s IncrementalHoareTripleChecker+Time [2023-02-18 22:25:31,371 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6564 Valid, 952 Invalid, 3236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1273 Valid, 1963 Invalid, 0 Unknown, 0 Unchecked, 2.1s Time] [2023-02-18 22:25:31,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2865 states. [2023-02-18 22:25:31,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2865 to 2108. [2023-02-18 22:25:31,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2108 states, 2106 states have (on average 1.1733143399810066) internal successors, (2471), 2107 states have internal predecessors, (2471), 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) [2023-02-18 22:25:31,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2108 states to 2108 states and 2471 transitions. [2023-02-18 22:25:31,397 INFO L78 Accepts]: Start accepts. Automaton has 2108 states and 2471 transitions. Word has length 657 [2023-02-18 22:25:31,398 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-18 22:25:31,398 INFO L495 AbstractCegarLoop]: Abstraction has 2108 states and 2471 transitions. [2023-02-18 22:25:31,399 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 265 states, 265 states have (on average 3.9849056603773585) internal successors, (1056), 265 states have internal predecessors, (1056), 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) [2023-02-18 22:25:31,399 INFO L276 IsEmpty]: Start isEmpty. Operand 2108 states and 2471 transitions. [2023-02-18 22:25:31,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1186 [2023-02-18 22:25:31,430 INFO L187 NwaCegarLoop]: Found error trace [2023-02-18 22:25:31,431 INFO L195 NwaCegarLoop]: trace histogram [262, 262, 262, 262, 33, 33, 33, 33, 1, 1, 1, 1, 1] [2023-02-18 22:25:31,485 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (11)] Forceful destruction successful, exit code 0 [2023-02-18 22:25:31,631 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,SelfDestructingSolverStorable12 [2023-02-18 22:25:31,632 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 3 more)] === [2023-02-18 22:25:31,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-18 22:25:31,632 INFO L85 PathProgramCache]: Analyzing trace with hash 358047568, now seen corresponding path program 5 times [2023-02-18 22:25:31,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-18 22:25:31,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1104658605] [2023-02-18 22:25:31,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-18 22:25:31,632 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-18 22:25:32,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-18 22:26:17,363 INFO L134 CoverageAnalysis]: Checked inductivity of 139171 backedges. 0 proven. 137026 refuted. 0 times theorem prover too weak. 2145 trivial. 0 not checked. [2023-02-18 22:26:17,363 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-18 22:26:17,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1104658605] [2023-02-18 22:26:17,363 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1104658605] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-18 22:26:17,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1963544602] [2023-02-18 22:26:17,364 INFO L93 rtionOrderModulation]: Changing assertion order to INSIDE_LOOP_FIRST1 [2023-02-18 22:26:17,364 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-18 22:26:17,364 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-18 22:26:17,365 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) [2023-02-18 22:26:17,366 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process