./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/test-0232-3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version b5317dae Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety/test-0232-3.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.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 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-b5317da-m [2023-02-16 03:13:37,107 INFO L177 SettingsManager]: Resetting all preferences to default values... [2023-02-16 03:13:37,110 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2023-02-16 03:13:37,148 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2023-02-16 03:13:37,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2023-02-16 03:13:37,152 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2023-02-16 03:13:37,153 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2023-02-16 03:13:37,156 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2023-02-16 03:13:37,157 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2023-02-16 03:13:37,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2023-02-16 03:13:37,163 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2023-02-16 03:13:37,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2023-02-16 03:13:37,165 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2023-02-16 03:13:37,167 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2023-02-16 03:13:37,168 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2023-02-16 03:13:37,169 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2023-02-16 03:13:37,170 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2023-02-16 03:13:37,172 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2023-02-16 03:13:37,173 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2023-02-16 03:13:37,177 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2023-02-16 03:13:37,178 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2023-02-16 03:13:37,179 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2023-02-16 03:13:37,180 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2023-02-16 03:13:37,181 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2023-02-16 03:13:37,189 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2023-02-16 03:13:37,189 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2023-02-16 03:13:37,190 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2023-02-16 03:13:37,191 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2023-02-16 03:13:37,192 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2023-02-16 03:13:37,192 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2023-02-16 03:13:37,193 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2023-02-16 03:13:37,194 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2023-02-16 03:13:37,195 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2023-02-16 03:13:37,196 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2023-02-16 03:13:37,197 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2023-02-16 03:13:37,197 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2023-02-16 03:13:37,198 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2023-02-16 03:13:37,198 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2023-02-16 03:13:37,198 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2023-02-16 03:13:37,199 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2023-02-16 03:13:37,200 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2023-02-16 03:13:37,201 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2023-02-16 03:13:37,244 INFO L113 SettingsManager]: Loading preferences was successful [2023-02-16 03:13:37,245 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2023-02-16 03:13:37,245 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2023-02-16 03:13:37,245 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2023-02-16 03:13:37,246 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2023-02-16 03:13:37,246 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2023-02-16 03:13:37,247 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2023-02-16 03:13:37,247 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2023-02-16 03:13:37,248 INFO L138 SettingsManager]: * Use SBE=true [2023-02-16 03:13:37,248 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2023-02-16 03:13:37,249 INFO L138 SettingsManager]: * sizeof long=4 [2023-02-16 03:13:37,249 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2023-02-16 03:13:37,249 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2023-02-16 03:13:37,249 INFO L138 SettingsManager]: * sizeof POINTER=4 [2023-02-16 03:13:37,250 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2023-02-16 03:13:37,250 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2023-02-16 03:13:37,250 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2023-02-16 03:13:37,250 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2023-02-16 03:13:37,250 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2023-02-16 03:13:37,251 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2023-02-16 03:13:37,251 INFO L138 SettingsManager]: * sizeof long double=12 [2023-02-16 03:13:37,251 INFO L138 SettingsManager]: * Use constant arrays=true [2023-02-16 03:13:37,251 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2023-02-16 03:13:37,252 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2023-02-16 03:13:37,252 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2023-02-16 03:13:37,252 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:13:37,252 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2023-02-16 03:13:37,252 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2023-02-16 03:13:37,253 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2023-02-16 03:13:37,253 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2023-02-16 03:13:37,254 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2023-02-16 03:13:37,254 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2023-02-16 03:13:37,254 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2023-02-16 03:13:37,254 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2023-02-16 03:13:37,255 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 01db24b1589b54f78ea9acc56548e9023dc94ca9b67a9629bccf00110df292f7 [2023-02-16 03:13:37,511 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2023-02-16 03:13:37,532 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2023-02-16 03:13:37,534 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2023-02-16 03:13:37,535 INFO L271 PluginConnector]: Initializing CDTParser... [2023-02-16 03:13:37,538 INFO L275 PluginConnector]: CDTParser initialized [2023-02-16 03:13:37,539 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/test-0232-3.i [2023-02-16 03:13:38,624 INFO L500 CDTParser]: Created temporary CDT project at NULL [2023-02-16 03:13:38,902 INFO L351 CDTParser]: Found 1 translation units. [2023-02-16 03:13:38,902 INFO L172 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/test-0232-3.i [2023-02-16 03:13:38,910 INFO L394 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1601377/ea7b309aeee34498aab83e979f6bd89e/FLAGcc504ca17 [2023-02-16 03:13:38,924 INFO L402 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6c1601377/ea7b309aeee34498aab83e979f6bd89e [2023-02-16 03:13:38,926 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2023-02-16 03:13:38,927 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2023-02-16 03:13:38,928 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2023-02-16 03:13:38,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2023-02-16 03:13:38,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2023-02-16 03:13:38,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:13:38" (1/1) ... [2023-02-16 03:13:38,932 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5541a2e9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:38, skipping insertion in model container [2023-02-16 03:13:38,933 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 16.02 03:13:38" (1/1) ... [2023-02-16 03:13:38,939 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2023-02-16 03:13:38,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2023-02-16 03:13:39,176 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:13:39,184 INFO L203 MainTranslator]: Completed pre-run [2023-02-16 03:13:39,229 INFO L210 PostProcessor]: Analyzing one entry point: main [2023-02-16 03:13:39,254 INFO L208 MainTranslator]: Completed translation [2023-02-16 03:13:39,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39 WrapperNode [2023-02-16 03:13:39,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2023-02-16 03:13:39,255 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2023-02-16 03:13:39,255 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2023-02-16 03:13:39,255 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2023-02-16 03:13:39,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,270 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,288 INFO L138 Inliner]: procedures = 126, calls = 38, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 98 [2023-02-16 03:13:39,288 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2023-02-16 03:13:39,289 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2023-02-16 03:13:39,289 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2023-02-16 03:13:39,289 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2023-02-16 03:13:39,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,300 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,313 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,317 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,318 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,319 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,322 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2023-02-16 03:13:39,325 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2023-02-16 03:13:39,325 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2023-02-16 03:13:39,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2023-02-16 03:13:39,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (1/1) ... [2023-02-16 03:13:39,330 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2023-02-16 03:13:39,343 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:13:39,361 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2023-02-16 03:13:39,363 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2023-02-16 03:13:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2023-02-16 03:13:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2023-02-16 03:13:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2023-02-16 03:13:39,393 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2023-02-16 03:13:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2023-02-16 03:13:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2023-02-16 03:13:39,394 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2023-02-16 03:13:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2023-02-16 03:13:39,395 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2023-02-16 03:13:39,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2023-02-16 03:13:39,482 INFO L235 CfgBuilder]: Building ICFG [2023-02-16 03:13:39,483 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2023-02-16 03:13:39,847 INFO L276 CfgBuilder]: Performing block encoding [2023-02-16 03:13:39,855 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2023-02-16 03:13:39,856 INFO L300 CfgBuilder]: Removed 2 assume(true) statements. [2023-02-16 03:13:39,858 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:13:39 BoogieIcfgContainer [2023-02-16 03:13:39,858 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2023-02-16 03:13:39,860 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2023-02-16 03:13:39,860 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2023-02-16 03:13:39,862 INFO L275 PluginConnector]: TraceAbstraction initialized [2023-02-16 03:13:39,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 16.02 03:13:38" (1/3) ... [2023-02-16 03:13:39,863 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50438ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:13:39, skipping insertion in model container [2023-02-16 03:13:39,863 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 16.02 03:13:39" (2/3) ... [2023-02-16 03:13:39,864 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50438ab6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 16.02 03:13:39, skipping insertion in model container [2023-02-16 03:13:39,864 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 16.02 03:13:39" (3/3) ... [2023-02-16 03:13:39,868 INFO L112 eAbstractionObserver]: Analyzing ICFG test-0232-3.i [2023-02-16 03:13:39,883 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2023-02-16 03:13:39,883 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 55 error locations. [2023-02-16 03:13:39,915 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2023-02-16 03:13:39,921 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;@5bddffc9, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2023-02-16 03:13:39,921 INFO L358 AbstractCegarLoop]: Starting to check reachability of 55 error locations. [2023-02-16 03:13:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand has 107 states, 51 states have (on average 2.215686274509804) internal successors, (113), 106 states have internal predecessors, (113), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:39,930 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-16 03:13:39,930 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:39,930 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-16 03:13:39,931 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:39,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:39,935 INFO L85 PathProgramCache]: Analyzing trace with hash 925637, now seen corresponding path program 1 times [2023-02-16 03:13:39,943 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:39,943 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [272102079] [2023-02-16 03:13:39,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:39,944 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:40,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:40,237 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:40,238 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:40,238 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [272102079] [2023-02-16 03:13:40,239 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [272102079] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:40,239 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:40,239 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:13:40,241 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [927698901] [2023-02-16 03:13:40,241 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:40,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:13:40,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:40,276 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:13:40,277 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:13:40,279 INFO L87 Difference]: Start difference. First operand has 107 states, 51 states have (on average 2.215686274509804) internal successors, (113), 106 states have internal predecessors, (113), 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 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:40,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:40,461 INFO L93 Difference]: Finished difference Result 132 states and 138 transitions. [2023-02-16 03:13:40,463 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2023-02-16 03:13:40,464 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-02-16 03:13:40,464 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:40,474 INFO L225 Difference]: With dead ends: 132 [2023-02-16 03:13:40,475 INFO L226 Difference]: Without dead ends: 130 [2023-02-16 03:13:40,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:13:40,483 INFO L413 NwaCegarLoop]: 56 mSDtfsCounter, 185 mSDsluCounter, 25 mSDsCounter, 0 mSdLazyCounter, 96 mSolverCounterSat, 19 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 185 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 115 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 19 IncrementalHoareTripleChecker+Valid, 96 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:40,484 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [185 Valid, 81 Invalid, 115 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [19 Valid, 96 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:40,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-16 03:13:40,520 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 98. [2023-02-16 03:13:40,522 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 51 states have (on average 2.019607843137255) internal successors, (103), 97 states have internal predecessors, (103), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:40,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2023-02-16 03:13:40,527 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 4 [2023-02-16 03:13:40,528 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:40,528 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2023-02-16 03:13:40,528 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:40,528 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2023-02-16 03:13:40,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2023-02-16 03:13:40,529 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:40,529 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1] [2023-02-16 03:13:40,530 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2023-02-16 03:13:40,530 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:40,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:40,531 INFO L85 PathProgramCache]: Analyzing trace with hash 925638, now seen corresponding path program 1 times [2023-02-16 03:13:40,531 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:40,531 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1849665457] [2023-02-16 03:13:40,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:40,532 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:40,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:40,697 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:40,697 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:40,697 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1849665457] [2023-02-16 03:13:40,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1849665457] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:40,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:40,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:13:40,698 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434155068] [2023-02-16 03:13:40,698 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:40,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:13:40,700 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:40,700 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:13:40,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:13:40,701 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:40,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:40,940 INFO L93 Difference]: Finished difference Result 221 states and 234 transitions. [2023-02-16 03:13:40,941 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:13:40,941 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2023-02-16 03:13:40,941 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:40,942 INFO L225 Difference]: With dead ends: 221 [2023-02-16 03:13:40,943 INFO L226 Difference]: Without dead ends: 221 [2023-02-16 03:13:40,943 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:13:40,944 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 188 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 198 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 188 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 198 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:40,945 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [188 Valid, 157 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 198 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:13:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 221 states. [2023-02-16 03:13:40,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 221 to 105. [2023-02-16 03:13:40,951 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 105 states, 62 states have (on average 1.8709677419354838) internal successors, (116), 104 states have internal predecessors, (116), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:40,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 105 states to 105 states and 116 transitions. [2023-02-16 03:13:40,952 INFO L78 Accepts]: Start accepts. Automaton has 105 states and 116 transitions. Word has length 4 [2023-02-16 03:13:40,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:40,953 INFO L495 AbstractCegarLoop]: Abstraction has 105 states and 116 transitions. [2023-02-16 03:13:40,953 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 4 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:40,953 INFO L276 IsEmpty]: Start isEmpty. Operand 105 states and 116 transitions. [2023-02-16 03:13:40,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-16 03:13:40,954 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:40,954 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-16 03:13:40,954 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2023-02-16 03:13:40,954 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:40,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:40,955 INFO L85 PathProgramCache]: Analyzing trace with hash 28694727, now seen corresponding path program 1 times [2023-02-16 03:13:40,955 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:40,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1413639544] [2023-02-16 03:13:40,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:40,956 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:40,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:40,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:40,985 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:40,986 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1413639544] [2023-02-16 03:13:40,986 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1413639544] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:40,986 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:40,986 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:13:40,986 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548471300] [2023-02-16 03:13:40,987 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:40,987 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:13:40,987 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:40,988 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:13:40,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:13:40,988 INFO L87 Difference]: Start difference. First operand 105 states and 116 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:41,052 INFO L93 Difference]: Finished difference Result 120 states and 128 transitions. [2023-02-16 03:13:41,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:13:41,053 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-02-16 03:13:41,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:41,054 INFO L225 Difference]: With dead ends: 120 [2023-02-16 03:13:41,054 INFO L226 Difference]: Without dead ends: 120 [2023-02-16 03:13:41,054 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 [2023-02-16 03:13:41,055 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 63 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 62 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 63 SdHoareTripleChecker+Valid, 84 SdHoareTripleChecker+Invalid, 66 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 62 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:41,056 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [63 Valid, 84 Invalid, 66 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 62 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:41,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-16 03:13:41,060 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 101. [2023-02-16 03:13:41,061 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 62 states have (on average 1.7903225806451613) internal successors, (111), 100 states have internal predecessors, (111), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,061 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 111 transitions. [2023-02-16 03:13:41,062 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 111 transitions. Word has length 5 [2023-02-16 03:13:41,062 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:41,062 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 111 transitions. [2023-02-16 03:13:41,062 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,062 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 111 transitions. [2023-02-16 03:13:41,063 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2023-02-16 03:13:41,063 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:41,063 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2023-02-16 03:13:41,063 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2023-02-16 03:13:41,063 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:41,064 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:41,064 INFO L85 PathProgramCache]: Analyzing trace with hash 28694728, now seen corresponding path program 1 times [2023-02-16 03:13:41,064 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:41,064 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [172068910] [2023-02-16 03:13:41,065 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:41,065 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:41,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:41,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:41,127 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:41,127 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [172068910] [2023-02-16 03:13:41,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [172068910] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:41,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:41,128 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2023-02-16 03:13:41,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2146847374] [2023-02-16 03:13:41,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:41,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2023-02-16 03:13:41,129 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:41,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2023-02-16 03:13:41,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2023-02-16 03:13:41,129 INFO L87 Difference]: Start difference. First operand 101 states and 111 transitions. Second operand has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:41,180 INFO L93 Difference]: Finished difference Result 98 states and 107 transitions. [2023-02-16 03:13:41,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:13:41,182 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 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 5 [2023-02-16 03:13:41,182 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:41,182 INFO L225 Difference]: With dead ends: 98 [2023-02-16 03:13:41,182 INFO L226 Difference]: Without dead ends: 98 [2023-02-16 03:13:41,183 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 [2023-02-16 03:13:41,190 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 84 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 38 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 54 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 38 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:41,192 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 54 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 38 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:13:41,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-16 03:13:41,198 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 97. [2023-02-16 03:13:41,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 62 states have (on average 1.7096774193548387) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2023-02-16 03:13:41,199 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 5 [2023-02-16 03:13:41,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:41,199 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2023-02-16 03:13:41,200 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.5) internal successors, (5), 3 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,200 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2023-02-16 03:13:41,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2023-02-16 03:13:41,200 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:41,200 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:41,201 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2023-02-16 03:13:41,201 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:41,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:41,202 INFO L85 PathProgramCache]: Analyzing trace with hash -1328641136, now seen corresponding path program 1 times [2023-02-16 03:13:41,202 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:41,202 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [89478918] [2023-02-16 03:13:41,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:41,202 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:41,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:41,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:41,403 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:41,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [89478918] [2023-02-16 03:13:41,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [89478918] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:41,403 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:41,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:13:41,404 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [77413436] [2023-02-16 03:13:41,404 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:41,405 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2023-02-16 03:13:41,405 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:41,406 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2023-02-16 03:13:41,406 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:13:41,406 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:41,588 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2023-02-16 03:13:41,588 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2023-02-16 03:13:41,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 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 10 [2023-02-16 03:13:41,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:41,589 INFO L225 Difference]: With dead ends: 107 [2023-02-16 03:13:41,589 INFO L226 Difference]: Without dead ends: 107 [2023-02-16 03:13:41,590 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:13:41,594 INFO L413 NwaCegarLoop]: 82 mSDtfsCounter, 17 mSDsluCounter, 347 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:41,594 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 429 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:41,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2023-02-16 03:13:41,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 103. [2023-02-16 03:13:41,607 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 103 states, 68 states have (on average 1.6470588235294117) internal successors, (112), 102 states have internal predecessors, (112), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,609 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 103 states to 103 states and 112 transitions. [2023-02-16 03:13:41,611 INFO L78 Accepts]: Start accepts. Automaton has 103 states and 112 transitions. Word has length 10 [2023-02-16 03:13:41,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:41,612 INFO L495 AbstractCegarLoop]: Abstraction has 103 states and 112 transitions. [2023-02-16 03:13:41,612 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 1.4285714285714286) internal successors, (10), 7 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,612 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states and 112 transitions. [2023-02-16 03:13:41,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2023-02-16 03:13:41,613 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:41,613 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:41,616 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2023-02-16 03:13:41,617 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:41,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:41,617 INFO L85 PathProgramCache]: Analyzing trace with hash 1762075788, now seen corresponding path program 1 times [2023-02-16 03:13:41,617 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:41,618 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1300019277] [2023-02-16 03:13:41,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:41,618 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:41,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:41,779 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:41,780 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:41,780 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1300019277] [2023-02-16 03:13:41,781 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1300019277] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:41,781 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:41,781 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:13:41,781 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [962085425] [2023-02-16 03:13:41,781 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:41,782 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:13:41,782 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:41,782 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:13:41,782 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:13:41,783 INFO L87 Difference]: Start difference. First operand 103 states and 112 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,896 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:41,897 INFO L93 Difference]: Finished difference Result 120 states and 127 transitions. [2023-02-16 03:13:41,897 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2023-02-16 03:13:41,897 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 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 11 [2023-02-16 03:13:41,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:41,898 INFO L225 Difference]: With dead ends: 120 [2023-02-16 03:13:41,898 INFO L226 Difference]: Without dead ends: 120 [2023-02-16 03:13:41,899 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=42, Unknown=0, NotChecked=0, Total=72 [2023-02-16 03:13:41,900 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 378 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 84 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 378 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 85 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 84 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:41,900 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [378 Valid, 62 Invalid, 85 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 84 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:41,902 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 120 states. [2023-02-16 03:13:41,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 120 to 99. [2023-02-16 03:13:41,912 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 65 states have (on average 1.6615384615384616) internal successors, (108), 98 states have internal predecessors, (108), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,913 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 108 transitions. [2023-02-16 03:13:41,913 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 108 transitions. Word has length 11 [2023-02-16 03:13:41,914 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:41,914 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 108 transitions. [2023-02-16 03:13:41,914 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 6 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:41,914 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 108 transitions. [2023-02-16 03:13:41,915 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 03:13:41,915 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:41,915 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:41,915 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2023-02-16 03:13:41,915 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:41,916 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:41,916 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015976, now seen corresponding path program 1 times [2023-02-16 03:13:41,916 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:41,916 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2103346559] [2023-02-16 03:13:41,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:41,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:41,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:42,029 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:42,030 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:42,030 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2103346559] [2023-02-16 03:13:42,030 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2103346559] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:42,030 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:42,030 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:13:42,031 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1941991851] [2023-02-16 03:13:42,031 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:42,031 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:13:42,032 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:42,032 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:13:42,033 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:13:42,033 INFO L87 Difference]: Start difference. First operand 99 states and 108 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2023-02-16 03:13:42,158 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:42,158 INFO L93 Difference]: Finished difference Result 116 states and 123 transitions. [2023-02-16 03:13:42,159 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:13:42,159 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 18 [2023-02-16 03:13:42,159 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:42,160 INFO L225 Difference]: With dead ends: 116 [2023-02-16 03:13:42,160 INFO L226 Difference]: Without dead ends: 116 [2023-02-16 03:13:42,160 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:13:42,161 INFO L413 NwaCegarLoop]: 42 mSDtfsCounter, 201 mSDsluCounter, 80 mSDsCounter, 0 mSdLazyCounter, 174 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 201 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 177 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 174 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:42,161 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [201 Valid, 122 Invalid, 177 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 174 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:42,162 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2023-02-16 03:13:42,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 98. [2023-02-16 03:13:42,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 65 states have (on average 1.646153846153846) internal successors, (107), 97 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:42,169 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 107 transitions. [2023-02-16 03:13:42,169 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 107 transitions. Word has length 18 [2023-02-16 03:13:42,170 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:42,170 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 107 transitions. [2023-02-16 03:13:42,170 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2023-02-16 03:13:42,170 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 107 transitions. [2023-02-16 03:13:42,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2023-02-16 03:13:42,171 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:42,171 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:42,171 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2023-02-16 03:13:42,172 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:42,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:42,172 INFO L85 PathProgramCache]: Analyzing trace with hash 2075015977, now seen corresponding path program 1 times [2023-02-16 03:13:42,172 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:42,172 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1480602459] [2023-02-16 03:13:42,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:42,173 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:42,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:42,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:42,411 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:42,411 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1480602459] [2023-02-16 03:13:42,411 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1480602459] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:42,411 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:42,411 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:13:42,412 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101234544] [2023-02-16 03:13:42,412 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:42,412 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:13:42,412 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:42,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:13:42,413 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:13:42,413 INFO L87 Difference]: Start difference. First operand 98 states and 107 transitions. Second operand has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2023-02-16 03:13:42,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:42,535 INFO L93 Difference]: Finished difference Result 121 states and 128 transitions. [2023-02-16 03:13:42,535 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:13:42,535 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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 18 [2023-02-16 03:13:42,536 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:42,536 INFO L225 Difference]: With dead ends: 121 [2023-02-16 03:13:42,536 INFO L226 Difference]: Without dead ends: 121 [2023-02-16 03:13:42,537 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:13:42,538 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 169 mSDsluCounter, 72 mSDsCounter, 0 mSdLazyCounter, 119 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 169 SdHoareTripleChecker+Valid, 120 SdHoareTripleChecker+Invalid, 122 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 119 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:42,539 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [169 Valid, 120 Invalid, 122 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 119 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:42,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2023-02-16 03:13:42,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 97. [2023-02-16 03:13:42,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 65 states have (on average 1.6307692307692307) internal successors, (106), 96 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:42,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 106 transitions. [2023-02-16 03:13:42,542 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 106 transitions. Word has length 18 [2023-02-16 03:13:42,542 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:42,542 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 106 transitions. [2023-02-16 03:13:42,542 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.6) internal successors, (18), 6 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) [2023-02-16 03:13:42,544 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 106 transitions. [2023-02-16 03:13:42,545 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2023-02-16 03:13:42,545 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:42,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:42,546 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2023-02-16 03:13:42,547 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:42,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:42,547 INFO L85 PathProgramCache]: Analyzing trace with hash 1257147052, now seen corresponding path program 1 times [2023-02-16 03:13:42,547 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:42,547 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1165256695] [2023-02-16 03:13:42,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:42,548 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:42,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:42,668 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:42,668 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:42,668 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1165256695] [2023-02-16 03:13:42,669 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1165256695] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:42,669 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:42,669 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:13:42,669 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [734191778] [2023-02-16 03:13:42,669 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:42,670 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:13:42,670 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:42,670 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:13:42,670 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:13:42,671 INFO L87 Difference]: Start difference. First operand 97 states and 106 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2023-02-16 03:13:42,750 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:42,750 INFO L93 Difference]: Finished difference Result 89 states and 93 transitions. [2023-02-16 03:13:42,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:13:42,751 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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 [2023-02-16 03:13:42,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:42,751 INFO L225 Difference]: With dead ends: 89 [2023-02-16 03:13:42,751 INFO L226 Difference]: Without dead ends: 89 [2023-02-16 03:13:42,752 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:13:42,754 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 102 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 95 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 102 SdHoareTripleChecker+Valid, 139 SdHoareTripleChecker+Invalid, 95 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 95 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:42,754 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [102 Valid, 139 Invalid, 95 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 95 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:42,755 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2023-02-16 03:13:42,756 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2023-02-16 03:13:42,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 57 states have (on average 1.631578947368421) internal successors, (93), 88 states have internal predecessors, (93), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:42,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 93 transitions. [2023-02-16 03:13:42,756 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 93 transitions. Word has length 20 [2023-02-16 03:13:42,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:42,757 INFO L495 AbstractCegarLoop]: Abstraction has 89 states and 93 transitions. [2023-02-16 03:13:42,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 5 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) [2023-02-16 03:13:42,757 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 93 transitions. [2023-02-16 03:13:42,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 03:13:42,758 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:42,758 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:42,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2023-02-16 03:13:42,758 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:42,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:42,759 INFO L85 PathProgramCache]: Analyzing trace with hash -663319494, now seen corresponding path program 1 times [2023-02-16 03:13:42,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:42,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [671270389] [2023-02-16 03:13:42,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:42,760 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:42,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:42,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:42,837 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:42,837 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [671270389] [2023-02-16 03:13:42,837 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [671270389] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:42,837 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:42,837 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:13:42,837 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2028497907] [2023-02-16 03:13:42,838 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:42,838 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:13:42,838 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:42,838 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:13:42,839 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:13:42,839 INFO L87 Difference]: Start difference. First operand 89 states and 93 transitions. Second operand has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:42,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:42,926 INFO L93 Difference]: Finished difference Result 88 states and 92 transitions. [2023-02-16 03:13:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:13:42,926 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 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 21 [2023-02-16 03:13:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:42,927 INFO L225 Difference]: With dead ends: 88 [2023-02-16 03:13:42,927 INFO L226 Difference]: Without dead ends: 88 [2023-02-16 03:13:42,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:13:42,929 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 16 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:42,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [16 Valid, 189 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 127 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:42,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2023-02-16 03:13:42,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 88. [2023-02-16 03:13:42,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 57 states have (on average 1.6140350877192982) internal successors, (92), 87 states have internal predecessors, (92), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:42,931 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 92 transitions. [2023-02-16 03:13:42,932 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 92 transitions. Word has length 21 [2023-02-16 03:13:42,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:42,932 INFO L495 AbstractCegarLoop]: Abstraction has 88 states and 92 transitions. [2023-02-16 03:13:42,932 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.25) internal successors, (21), 5 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:42,932 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 92 transitions. [2023-02-16 03:13:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2023-02-16 03:13:42,933 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:42,933 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:42,933 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2023-02-16 03:13:42,933 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:42,936 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:42,937 INFO L85 PathProgramCache]: Analyzing trace with hash -663319493, now seen corresponding path program 1 times [2023-02-16 03:13:42,937 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:42,937 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392034605] [2023-02-16 03:13:42,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:42,937 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:42,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:43,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:43,202 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:43,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392034605] [2023-02-16 03:13:43,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [392034605] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:43,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:43,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:13:43,202 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1554276609] [2023-02-16 03:13:43,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:43,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:13:43,203 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:43,203 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:13:43,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:13:43,204 INFO L87 Difference]: Start difference. First operand 88 states and 92 transitions. Second operand has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:43,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:43,351 INFO L93 Difference]: Finished difference Result 87 states and 91 transitions. [2023-02-16 03:13:43,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:13:43,352 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 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 21 [2023-02-16 03:13:43,352 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:43,352 INFO L225 Difference]: With dead ends: 87 [2023-02-16 03:13:43,352 INFO L226 Difference]: Without dead ends: 87 [2023-02-16 03:13:43,353 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:13:43,353 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 176 mSDsluCounter, 106 mSDsCounter, 0 mSdLazyCounter, 156 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 176 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 159 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 156 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:43,353 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [176 Valid, 152 Invalid, 159 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 156 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:13:43,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2023-02-16 03:13:43,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2023-02-16 03:13:43,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 57 states have (on average 1.5964912280701755) internal successors, (91), 86 states have internal predecessors, (91), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:43,355 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 91 transitions. [2023-02-16 03:13:43,355 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 91 transitions. Word has length 21 [2023-02-16 03:13:43,355 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:43,355 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 91 transitions. [2023-02-16 03:13:43,356 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.0) internal successors, (21), 8 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:43,356 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 91 transitions. [2023-02-16 03:13:43,356 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 03:13:43,356 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:43,356 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:43,356 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2023-02-16 03:13:43,356 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:43,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:43,357 INFO L85 PathProgramCache]: Analyzing trace with hash 911932203, now seen corresponding path program 1 times [2023-02-16 03:13:43,357 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:43,357 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [793384887] [2023-02-16 03:13:43,357 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:43,358 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:43,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:43,678 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:43,679 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:43,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [793384887] [2023-02-16 03:13:43,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [793384887] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:13:43,679 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:13:43,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 03:13:43,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385382248] [2023-02-16 03:13:43,679 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:13:43,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:13:43,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:43,680 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:13:43,680 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:13:43,680 INFO L87 Difference]: Start difference. First operand 87 states and 91 transitions. Second operand has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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) [2023-02-16 03:13:44,148 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:44,148 INFO L93 Difference]: Finished difference Result 169 states and 176 transitions. [2023-02-16 03:13:44,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-16 03:13:44,149 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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) Word has length 22 [2023-02-16 03:13:44,150 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:44,150 INFO L225 Difference]: With dead ends: 169 [2023-02-16 03:13:44,150 INFO L226 Difference]: Without dead ends: 169 [2023-02-16 03:13:44,151 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-02-16 03:13:44,151 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 312 mSDsluCounter, 215 mSDsCounter, 0 mSdLazyCounter, 389 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 312 SdHoareTripleChecker+Valid, 253 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 389 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:44,151 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [312 Valid, 253 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 389 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:13:44,152 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 169 states. [2023-02-16 03:13:44,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 169 to 101. [2023-02-16 03:13:44,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 71 states have (on average 1.4929577464788732) internal successors, (106), 100 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:44,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2023-02-16 03:13:44,154 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 22 [2023-02-16 03:13:44,154 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:44,154 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2023-02-16 03:13:44,154 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.4444444444444446) internal successors, (22), 10 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) [2023-02-16 03:13:44,154 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2023-02-16 03:13:44,155 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 03:13:44,155 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:44,155 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:44,155 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2023-02-16 03:13:44,155 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:44,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:44,155 INFO L85 PathProgramCache]: Analyzing trace with hash -428723026, now seen corresponding path program 1 times [2023-02-16 03:13:44,155 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:44,156 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2047745044] [2023-02-16 03:13:44,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:44,156 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:44,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:44,428 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:44,428 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:44,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2047745044] [2023-02-16 03:13:44,429 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2047745044] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:13:44,429 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1168134798] [2023-02-16 03:13:44,429 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:44,429 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:13:44,429 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:13:44,435 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:13:44,475 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2023-02-16 03:13:44,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:44,570 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 36 conjunts are in the unsatisfiable core [2023-02-16 03:13:44,582 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:13:44,755 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:13:44,818 INFO L321 Elim1Store]: treesize reduction 30, result has 37.5 percent of original size [2023-02-16 03:13:44,819 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 21 treesize of output 29 [2023-02-16 03:13:44,897 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:13:44,898 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-02-16 03:13:44,961 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:13:44,961 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-02-16 03:13:44,964 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:44,964 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:13:45,064 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 38 treesize of output 34 [2023-02-16 03:13:45,349 INFO L321 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2023-02-16 03:13:45,350 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 7 select indices, 7 select index equivalence classes, 0 disjoint index pairs (out of 21 index pairs), introduced 7 new quantified variables, introduced 21 case distinctions, treesize of input 103 treesize of output 255 [2023-02-16 03:13:45,726 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:45,726 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1168134798] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:13:45,726 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:13:45,727 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 19 [2023-02-16 03:13:45,727 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1106206043] [2023-02-16 03:13:45,727 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:13:45,727 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2023-02-16 03:13:45,727 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:13:45,728 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2023-02-16 03:13:45,729 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=323, Unknown=0, NotChecked=0, Total=380 [2023-02-16 03:13:45,729 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:46,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:13:46,285 INFO L93 Difference]: Finished difference Result 119 states and 125 transitions. [2023-02-16 03:13:46,285 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:13:46,285 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 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 22 [2023-02-16 03:13:46,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:13:46,286 INFO L225 Difference]: With dead ends: 119 [2023-02-16 03:13:46,286 INFO L226 Difference]: Without dead ends: 119 [2023-02-16 03:13:46,286 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 31 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=208, Invalid=604, Unknown=0, NotChecked=0, Total=812 [2023-02-16 03:13:46,286 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 288 mSDsluCounter, 313 mSDsCounter, 0 mSdLazyCounter, 551 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 288 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 568 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 551 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:13:46,287 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [288 Valid, 371 Invalid, 568 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 551 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:13:46,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 119 states. [2023-02-16 03:13:46,288 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 119 to 100. [2023-02-16 03:13:46,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 71 states have (on average 1.4788732394366197) internal successors, (105), 99 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:46,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2023-02-16 03:13:46,289 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 22 [2023-02-16 03:13:46,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:13:46,289 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2023-02-16 03:13:46,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 19 states have (on average 2.6842105263157894) internal successors, (51), 20 states have internal predecessors, (51), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:13:46,289 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2023-02-16 03:13:46,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2023-02-16 03:13:46,289 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:13:46,289 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:13:46,298 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2023-02-16 03:13:46,495 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2023-02-16 03:13:46,495 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:13:46,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:13:46,496 INFO L85 PathProgramCache]: Analyzing trace with hash -428723025, now seen corresponding path program 1 times [2023-02-16 03:13:46,496 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:13:46,496 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [67260002] [2023-02-16 03:13:46,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:46,496 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:13:46,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:46,959 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:46,959 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:13:46,959 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [67260002] [2023-02-16 03:13:46,959 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [67260002] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:13:46,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1568955194] [2023-02-16 03:13:46,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:13:46,960 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:13:46,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:13:46,965 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:13:46,968 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2023-02-16 03:13:47,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:13:47,107 INFO L263 TraceCheckSpWp]: Trace formula consists of 211 conjuncts, 53 conjunts are in the unsatisfiable core [2023-02-16 03:13:47,121 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:13:47,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:13:47,262 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:13:47,324 INFO L321 Elim1Store]: treesize reduction 19, result has 47.2 percent of original size [2023-02-16 03:13:47,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 26 [2023-02-16 03:13:47,336 INFO L321 Elim1Store]: treesize reduction 4, result has 66.7 percent of original size [2023-02-16 03:13:47,337 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 15 [2023-02-16 03:13:47,413 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:13:47,413 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 33 treesize of output 24 [2023-02-16 03:13:47,427 INFO L321 Elim1Store]: treesize reduction 25, result has 21.9 percent of original size [2023-02-16 03:13:47,427 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 18 [2023-02-16 03:13:47,499 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:13:47,499 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 16 [2023-02-16 03:13:47,507 INFO L321 Elim1Store]: treesize reduction 11, result has 8.3 percent of original size [2023-02-16 03:13:47,508 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 26 treesize of output 10 [2023-02-16 03:13:47,510 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:13:47,510 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:13:51,753 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 66 treesize of output 62 [2023-02-16 03:13:51,758 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 102 treesize of output 94 [2023-02-16 03:13:51,852 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 32 treesize of output 28 [2023-02-16 03:14:04,283 WARN L233 SmtUtils]: Spent 12.39s on a formula simplification. DAG size of input: 33 DAG size of output: 31 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:14:04,324 INFO L321 Elim1Store]: treesize reduction 5, result has 80.0 percent of original size [2023-02-16 03:14:04,324 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 57 [2023-02-16 03:14:04,330 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 53 treesize of output 49 [2023-02-16 03:14:04,405 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:04,405 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1568955194] provided 0 perfect and 2 imperfect interpolant sequences [2023-02-16 03:14:04,406 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2023-02-16 03:14:04,406 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 22 [2023-02-16 03:14:04,406 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923073968] [2023-02-16 03:14:04,406 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2023-02-16 03:14:04,407 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2023-02-16 03:14:04,407 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:04,407 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2023-02-16 03:14:04,408 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=440, Unknown=0, NotChecked=0, Total=506 [2023-02-16 03:14:04,408 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:05,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:05,477 INFO L93 Difference]: Finished difference Result 130 states and 136 transitions. [2023-02-16 03:14:05,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2023-02-16 03:14:05,478 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 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 22 [2023-02-16 03:14:05,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:05,478 INFO L225 Difference]: With dead ends: 130 [2023-02-16 03:14:05,478 INFO L226 Difference]: Without dead ends: 130 [2023-02-16 03:14:05,479 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 174 ImplicationChecksByTransitivity, 17.3s TimeCoverageRelationStatistics Valid=252, Invalid=870, Unknown=0, NotChecked=0, Total=1122 [2023-02-16 03:14:05,479 INFO L413 NwaCegarLoop]: 60 mSDtfsCounter, 406 mSDsluCounter, 489 mSDsCounter, 0 mSdLazyCounter, 713 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 406 SdHoareTripleChecker+Valid, 549 SdHoareTripleChecker+Invalid, 736 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 713 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:05,480 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [406 Valid, 549 Invalid, 736 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [23 Valid, 713 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2023-02-16 03:14:05,480 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 130 states. [2023-02-16 03:14:05,481 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 130 to 99. [2023-02-16 03:14:05,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 99 states, 71 states have (on average 1.4647887323943662) internal successors, (104), 98 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:05,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 99 states to 99 states and 104 transitions. [2023-02-16 03:14:05,482 INFO L78 Accepts]: Start accepts. Automaton has 99 states and 104 transitions. Word has length 22 [2023-02-16 03:14:05,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:05,482 INFO L495 AbstractCegarLoop]: Abstraction has 99 states and 104 transitions. [2023-02-16 03:14:05,482 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 2.8181818181818183) internal successors, (62), 23 states have internal predecessors, (62), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:05,482 INFO L276 IsEmpty]: Start isEmpty. Operand 99 states and 104 transitions. [2023-02-16 03:14:05,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2023-02-16 03:14:05,483 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:05,483 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:05,494 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2023-02-16 03:14:05,692 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,SelfDestructingSolverStorable13 [2023-02-16 03:14:05,692 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr25ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:05,692 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:05,692 INFO L85 PathProgramCache]: Analyzing trace with hash -1794872678, now seen corresponding path program 1 times [2023-02-16 03:14:05,692 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:05,693 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1215565097] [2023-02-16 03:14:05,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:05,693 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:05,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:06,014 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:06,015 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:06,015 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1215565097] [2023-02-16 03:14:06,015 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1215565097] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:06,015 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:06,015 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 03:14:06,015 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1892388961] [2023-02-16 03:14:06,015 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:06,015 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:14:06,016 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:06,016 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:14:06,016 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:14:06,016 INFO L87 Difference]: Start difference. First operand 99 states and 104 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:06,528 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:06,529 INFO L93 Difference]: Finished difference Result 164 states and 171 transitions. [2023-02-16 03:14:06,529 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2023-02-16 03:14:06,529 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 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 23 [2023-02-16 03:14:06,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:06,530 INFO L225 Difference]: With dead ends: 164 [2023-02-16 03:14:06,530 INFO L226 Difference]: Without dead ends: 164 [2023-02-16 03:14:06,531 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=371, Unknown=0, NotChecked=0, Total=506 [2023-02-16 03:14:06,531 INFO L413 NwaCegarLoop]: 31 mSDtfsCounter, 359 mSDsluCounter, 146 mSDsCounter, 0 mSdLazyCounter, 397 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 359 SdHoareTripleChecker+Valid, 177 SdHoareTripleChecker+Invalid, 413 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 397 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:06,531 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [359 Valid, 177 Invalid, 413 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 397 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2023-02-16 03:14:06,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2023-02-16 03:14:06,533 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 100. [2023-02-16 03:14:06,533 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 72 states have (on average 1.4583333333333333) internal successors, (105), 99 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:06,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2023-02-16 03:14:06,534 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 23 [2023-02-16 03:14:06,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:06,534 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2023-02-16 03:14:06,534 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 10 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:06,534 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2023-02-16 03:14:06,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2023-02-16 03:14:06,534 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:06,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:06,535 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2023-02-16 03:14:06,535 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:06,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:06,535 INFO L85 PathProgramCache]: Analyzing trace with hash 193521933, now seen corresponding path program 1 times [2023-02-16 03:14:06,535 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:06,535 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [642534174] [2023-02-16 03:14:06,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:06,536 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:06,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:06,853 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:06,853 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:06,854 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [642534174] [2023-02-16 03:14:06,854 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [642534174] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:06,854 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:06,854 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2023-02-16 03:14:06,854 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [261177009] [2023-02-16 03:14:06,854 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:06,854 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2023-02-16 03:14:06,854 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:06,855 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2023-02-16 03:14:06,855 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:14:06,855 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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) [2023-02-16 03:14:07,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:07,282 INFO L93 Difference]: Finished difference Result 115 states and 120 transitions. [2023-02-16 03:14:07,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2023-02-16 03:14:07,283 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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) Word has length 24 [2023-02-16 03:14:07,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:07,283 INFO L225 Difference]: With dead ends: 115 [2023-02-16 03:14:07,283 INFO L226 Difference]: Without dead ends: 115 [2023-02-16 03:14:07,283 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2023-02-16 03:14:07,284 INFO L413 NwaCegarLoop]: 37 mSDtfsCounter, 206 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 394 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 206 SdHoareTripleChecker+Valid, 238 SdHoareTripleChecker+Invalid, 405 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 394 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:07,284 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [206 Valid, 238 Invalid, 405 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 394 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:14:07,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2023-02-16 03:14:07,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 101. [2023-02-16 03:14:07,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 73 states have (on average 1.452054794520548) internal successors, (106), 100 states have internal predecessors, (106), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,286 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 106 transitions. [2023-02-16 03:14:07,286 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 106 transitions. Word has length 24 [2023-02-16 03:14:07,286 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:07,286 INFO L495 AbstractCegarLoop]: Abstraction has 101 states and 106 transitions. [2023-02-16 03:14:07,286 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.6666666666666665) internal successors, (24), 10 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) [2023-02-16 03:14:07,287 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 106 transitions. [2023-02-16 03:14:07,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 03:14:07,287 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:07,287 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:07,287 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2023-02-16 03:14:07,287 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:07,288 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:07,288 INFO L85 PathProgramCache]: Analyzing trace with hash 1704212733, now seen corresponding path program 1 times [2023-02-16 03:14:07,288 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:07,288 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [205722166] [2023-02-16 03:14:07,288 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:07,288 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:07,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:07,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:07,427 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:07,427 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [205722166] [2023-02-16 03:14:07,427 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [205722166] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:07,427 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:07,427 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2023-02-16 03:14:07,428 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487295787] [2023-02-16 03:14:07,428 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:07,429 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2023-02-16 03:14:07,429 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:07,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2023-02-16 03:14:07,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2023-02-16 03:14:07,429 INFO L87 Difference]: Start difference. First operand 101 states and 106 transitions. Second operand has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:07,539 INFO L93 Difference]: Finished difference Result 101 states and 105 transitions. [2023-02-16 03:14:07,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:14:07,540 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 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 25 [2023-02-16 03:14:07,540 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:07,540 INFO L225 Difference]: With dead ends: 101 [2023-02-16 03:14:07,540 INFO L226 Difference]: Without dead ends: 101 [2023-02-16 03:14:07,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=55, Unknown=0, NotChecked=0, Total=90 [2023-02-16 03:14:07,541 INFO L413 NwaCegarLoop]: 28 mSDtfsCounter, 124 mSDsluCounter, 27 mSDsCounter, 0 mSdLazyCounter, 137 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 144 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 137 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:07,541 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 55 Invalid, 144 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 137 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:07,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2023-02-16 03:14:07,543 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 100. [2023-02-16 03:14:07,543 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 73 states have (on average 1.4383561643835616) internal successors, (105), 99 states have internal predecessors, (105), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 105 transitions. [2023-02-16 03:14:07,543 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 105 transitions. Word has length 25 [2023-02-16 03:14:07,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:07,543 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 105 transitions. [2023-02-16 03:14:07,544 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.5714285714285716) internal successors, (25), 8 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,544 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 105 transitions. [2023-02-16 03:14:07,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2023-02-16 03:14:07,544 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:07,544 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:07,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2023-02-16 03:14:07,544 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:07,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:07,545 INFO L85 PathProgramCache]: Analyzing trace with hash 1704212734, now seen corresponding path program 1 times [2023-02-16 03:14:07,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:07,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2085704712] [2023-02-16 03:14:07,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:07,545 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:07,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:07,604 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:07,604 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:07,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2085704712] [2023-02-16 03:14:07,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2085704712] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:07,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:07,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2023-02-16 03:14:07,605 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1904320271] [2023-02-16 03:14:07,605 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:07,606 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2023-02-16 03:14:07,606 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:07,606 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2023-02-16 03:14:07,606 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:14:07,607 INFO L87 Difference]: Start difference. First operand 100 states and 105 transitions. Second operand has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,647 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:07,648 INFO L93 Difference]: Finished difference Result 93 states and 97 transitions. [2023-02-16 03:14:07,648 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2023-02-16 03:14:07,648 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 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 25 [2023-02-16 03:14:07,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:07,649 INFO L225 Difference]: With dead ends: 93 [2023-02-16 03:14:07,649 INFO L226 Difference]: Without dead ends: 93 [2023-02-16 03:14:07,649 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2023-02-16 03:14:07,650 INFO L413 NwaCegarLoop]: 44 mSDtfsCounter, 104 mSDsluCounter, 2 mSDsCounter, 0 mSdLazyCounter, 30 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 104 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 39 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 30 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:07,650 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [104 Valid, 46 Invalid, 39 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 30 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:14:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2023-02-16 03:14:07,651 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 93. [2023-02-16 03:14:07,652 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 73 states have (on average 1.3287671232876712) internal successors, (97), 92 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,652 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 97 transitions. [2023-02-16 03:14:07,652 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 97 transitions. Word has length 25 [2023-02-16 03:14:07,652 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:07,653 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 97 transitions. [2023-02-16 03:14:07,653 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 8.333333333333334) internal successors, (25), 4 states have internal predecessors, (25), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,653 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 97 transitions. [2023-02-16 03:14:07,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2023-02-16 03:14:07,653 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:07,654 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:07,654 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2023-02-16 03:14:07,654 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr29ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:07,654 INFO L85 PathProgramCache]: Analyzing trace with hash 1290987217, now seen corresponding path program 1 times [2023-02-16 03:14:07,655 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:07,655 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2078012507] [2023-02-16 03:14:07,655 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:07,655 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:07,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:07,754 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:07,754 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:07,754 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2078012507] [2023-02-16 03:14:07,754 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2078012507] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:07,754 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:07,755 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:14:07,755 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447976067] [2023-02-16 03:14:07,755 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:07,756 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:14:07,756 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:07,756 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:14:07,757 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:14:07,757 INFO L87 Difference]: Start difference. First operand 93 states and 97 transitions. Second operand has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:07,828 INFO L93 Difference]: Finished difference Result 92 states and 96 transitions. [2023-02-16 03:14:07,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2023-02-16 03:14:07,829 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 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 26 [2023-02-16 03:14:07,829 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:07,829 INFO L225 Difference]: With dead ends: 92 [2023-02-16 03:14:07,829 INFO L226 Difference]: Without dead ends: 92 [2023-02-16 03:14:07,830 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:14:07,831 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 77 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 68 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 121 SdHoareTripleChecker+Invalid, 69 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 68 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:07,831 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 121 Invalid, 69 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 68 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2023-02-16 03:14:07,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2023-02-16 03:14:07,833 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 92. [2023-02-16 03:14:07,833 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 73 states have (on average 1.3150684931506849) internal successors, (96), 91 states have internal predecessors, (96), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 96 transitions. [2023-02-16 03:14:07,833 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 96 transitions. Word has length 26 [2023-02-16 03:14:07,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:07,834 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 96 transitions. [2023-02-16 03:14:07,834 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.5) internal successors, (26), 5 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:07,834 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 96 transitions. [2023-02-16 03:14:07,835 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2023-02-16 03:14:07,836 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:07,836 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:07,836 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2023-02-16 03:14:07,838 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ULTIMATE.startErr30ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:07,838 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:07,839 INFO L85 PathProgramCache]: Analyzing trace with hash 1365898173, now seen corresponding path program 1 times [2023-02-16 03:14:07,839 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:07,839 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1448457337] [2023-02-16 03:14:07,839 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:07,840 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:07,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:07,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:07,960 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:07,960 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1448457337] [2023-02-16 03:14:07,960 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1448457337] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:07,960 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:07,961 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2023-02-16 03:14:07,961 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [164394964] [2023-02-16 03:14:07,961 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:07,962 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2023-02-16 03:14:07,962 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:07,962 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2023-02-16 03:14:07,963 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2023-02-16 03:14:07,963 INFO L87 Difference]: Start difference. First operand 92 states and 96 transitions. Second operand has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:08,068 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:08,069 INFO L93 Difference]: Finished difference Result 91 states and 95 transitions. [2023-02-16 03:14:08,069 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2023-02-16 03:14:08,069 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 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 27 [2023-02-16 03:14:08,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:08,070 INFO L225 Difference]: With dead ends: 91 [2023-02-16 03:14:08,070 INFO L226 Difference]: Without dead ends: 91 [2023-02-16 03:14:08,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2023-02-16 03:14:08,070 INFO L413 NwaCegarLoop]: 39 mSDtfsCounter, 73 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 73 SdHoareTripleChecker+Valid, 97 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:08,071 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [73 Valid, 97 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:08,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2023-02-16 03:14:08,072 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 91. [2023-02-16 03:14:08,072 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.3013698630136987) internal successors, (95), 90 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:08,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 95 transitions. [2023-02-16 03:14:08,073 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 95 transitions. Word has length 27 [2023-02-16 03:14:08,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:08,073 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 95 transitions. [2023-02-16 03:14:08,073 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 6.75) internal successors, (27), 5 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:08,073 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 95 transitions. [2023-02-16 03:14:08,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2023-02-16 03:14:08,073 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:08,073 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:08,073 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2023-02-16 03:14:08,073 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ULTIMATE.startErr31ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:08,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:08,074 INFO L85 PathProgramCache]: Analyzing trace with hash -606829485, now seen corresponding path program 1 times [2023-02-16 03:14:08,074 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:08,074 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1051734962] [2023-02-16 03:14:08,074 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:08,074 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:08,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:08,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:08,595 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:08,595 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1051734962] [2023-02-16 03:14:08,596 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1051734962] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:08,596 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:08,596 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2023-02-16 03:14:08,596 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [121355062] [2023-02-16 03:14:08,596 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:08,596 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2023-02-16 03:14:08,596 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:08,597 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2023-02-16 03:14:08,597 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2023-02-16 03:14:08,597 INFO L87 Difference]: Start difference. First operand 91 states and 95 transitions. Second operand has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:09,223 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:09,223 INFO L93 Difference]: Finished difference Result 98 states and 102 transitions. [2023-02-16 03:14:09,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:14:09,224 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 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 28 [2023-02-16 03:14:09,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:09,224 INFO L225 Difference]: With dead ends: 98 [2023-02-16 03:14:09,224 INFO L226 Difference]: Without dead ends: 98 [2023-02-16 03:14:09,225 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=134, Invalid=466, Unknown=0, NotChecked=0, Total=600 [2023-02-16 03:14:09,225 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 124 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 341 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 124 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 348 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 341 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:09,226 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [124 Valid, 249 Invalid, 348 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 341 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:14:09,226 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2023-02-16 03:14:09,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 95. [2023-02-16 03:14:09,228 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 77 states have (on average 1.2857142857142858) internal successors, (99), 94 states have internal predecessors, (99), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:09,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 99 transitions. [2023-02-16 03:14:09,228 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 99 transitions. Word has length 28 [2023-02-16 03:14:09,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:09,229 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 99 transitions. [2023-02-16 03:14:09,229 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 12 states have (on average 2.3333333333333335) internal successors, (28), 13 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:09,229 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 99 transitions. [2023-02-16 03:14:09,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2023-02-16 03:14:09,229 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:09,229 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:09,230 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2023-02-16 03:14:09,230 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:09,230 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:09,230 INFO L85 PathProgramCache]: Analyzing trace with hash -1631844736, now seen corresponding path program 1 times [2023-02-16 03:14:09,230 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:09,230 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1048358923] [2023-02-16 03:14:09,231 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:09,231 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:09,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:09,370 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:09,370 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:09,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1048358923] [2023-02-16 03:14:09,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1048358923] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:09,370 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:09,371 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2023-02-16 03:14:09,371 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383572502] [2023-02-16 03:14:09,371 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:09,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2023-02-16 03:14:09,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:09,372 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2023-02-16 03:14:09,372 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2023-02-16 03:14:09,372 INFO L87 Difference]: Start difference. First operand 95 states and 99 transitions. Second operand has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 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) [2023-02-16 03:14:09,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:09,493 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2023-02-16 03:14:09,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2023-02-16 03:14:09,493 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 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) Word has length 29 [2023-02-16 03:14:09,493 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:09,494 INFO L225 Difference]: With dead ends: 94 [2023-02-16 03:14:09,494 INFO L226 Difference]: Without dead ends: 94 [2023-02-16 03:14:09,494 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=70, Unknown=0, NotChecked=0, Total=110 [2023-02-16 03:14:09,494 INFO L413 NwaCegarLoop]: 33 mSDtfsCounter, 132 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 132 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 110 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:09,495 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [132 Valid, 81 Invalid, 110 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2023-02-16 03:14:09,495 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2023-02-16 03:14:09,496 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2023-02-16 03:14:09,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 77 states have (on average 1.2727272727272727) internal successors, (98), 93 states have internal predecessors, (98), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:09,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2023-02-16 03:14:09,497 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 29 [2023-02-16 03:14:09,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:09,497 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2023-02-16 03:14:09,497 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 5.8) internal successors, (29), 6 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) [2023-02-16 03:14:09,497 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2023-02-16 03:14:09,497 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 03:14:09,497 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:09,497 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:09,497 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2023-02-16 03:14:09,498 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ULTIMATE.startErr54ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:09,498 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:09,498 INFO L85 PathProgramCache]: Analyzing trace with hash 1014103750, now seen corresponding path program 1 times [2023-02-16 03:14:09,498 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:09,498 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1147333660] [2023-02-16 03:14:09,498 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:09,498 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:10,868 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:10,868 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:10,868 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1147333660] [2023-02-16 03:14:10,869 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1147333660] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:10,869 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:10,869 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2023-02-16 03:14:10,869 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [12189571] [2023-02-16 03:14:10,869 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:10,869 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2023-02-16 03:14:10,869 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:10,870 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2023-02-16 03:14:10,870 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2023-02-16 03:14:10,870 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 16 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:11,733 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:11,733 INFO L93 Difference]: Finished difference Result 143 states and 149 transitions. [2023-02-16 03:14:11,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:14:11,734 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 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 [2023-02-16 03:14:11,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:11,735 INFO L225 Difference]: With dead ends: 143 [2023-02-16 03:14:11,735 INFO L226 Difference]: Without dead ends: 141 [2023-02-16 03:14:11,735 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=75, Invalid=477, Unknown=0, NotChecked=0, Total=552 [2023-02-16 03:14:11,736 INFO L413 NwaCegarLoop]: 38 mSDtfsCounter, 50 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 596 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 406 SdHoareTripleChecker+Invalid, 599 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 596 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:11,736 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 406 Invalid, 599 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 596 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2023-02-16 03:14:11,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2023-02-16 03:14:11,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 117. [2023-02-16 03:14:11,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 117 states, 100 states have (on average 1.22) internal successors, (122), 116 states have internal predecessors, (122), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:11,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 122 transitions. [2023-02-16 03:14:11,738 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 122 transitions. Word has length 33 [2023-02-16 03:14:11,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:11,739 INFO L495 AbstractCegarLoop]: Abstraction has 117 states and 122 transitions. [2023-02-16 03:14:11,739 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 15 states have (on average 2.2) internal successors, (33), 16 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:11,739 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 122 transitions. [2023-02-16 03:14:11,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2023-02-16 03:14:11,739 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:11,740 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:11,740 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2023-02-16 03:14:11,740 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:11,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:11,740 INFO L85 PathProgramCache]: Analyzing trace with hash 1014104394, now seen corresponding path program 1 times [2023-02-16 03:14:11,741 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:11,741 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1814827836] [2023-02-16 03:14:11,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:11,741 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:11,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:12,498 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:12,499 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:12,499 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1814827836] [2023-02-16 03:14:12,499 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1814827836] provided 1 perfect and 0 imperfect interpolant sequences [2023-02-16 03:14:12,499 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2023-02-16 03:14:12,499 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2023-02-16 03:14:12,499 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [90884447] [2023-02-16 03:14:12,499 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2023-02-16 03:14:12,499 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2023-02-16 03:14:12,499 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2023-02-16 03:14:12,500 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2023-02-16 03:14:12,500 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=156, Unknown=0, NotChecked=0, Total=182 [2023-02-16 03:14:12,500 INFO L87 Difference]: Start difference. First operand 117 states and 122 transitions. Second operand has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:13,385 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2023-02-16 03:14:13,385 INFO L93 Difference]: Finished difference Result 120 states and 124 transitions. [2023-02-16 03:14:13,385 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2023-02-16 03:14:13,385 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 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 [2023-02-16 03:14:13,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2023-02-16 03:14:13,386 INFO L225 Difference]: With dead ends: 120 [2023-02-16 03:14:13,386 INFO L226 Difference]: Without dead ends: 103 [2023-02-16 03:14:13,386 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=120, Invalid=582, Unknown=0, NotChecked=0, Total=702 [2023-02-16 03:14:13,387 INFO L413 NwaCegarLoop]: 52 mSDtfsCounter, 54 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 361 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 54 SdHoareTripleChecker+Valid, 505 SdHoareTripleChecker+Invalid, 369 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 361 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2023-02-16 03:14:13,387 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [54 Valid, 505 Invalid, 369 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 361 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2023-02-16 03:14:13,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2023-02-16 03:14:13,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 100. [2023-02-16 03:14:13,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 83 states have (on average 1.2530120481927711) internal successors, (104), 99 states have internal predecessors, (104), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:13,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 104 transitions. [2023-02-16 03:14:13,390 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 104 transitions. Word has length 33 [2023-02-16 03:14:13,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2023-02-16 03:14:13,390 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 104 transitions. [2023-02-16 03:14:13,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 2.357142857142857) internal successors, (33), 14 states have internal predecessors, (33), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2023-02-16 03:14:13,390 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 104 transitions. [2023-02-16 03:14:13,390 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2023-02-16 03:14:13,390 INFO L187 NwaCegarLoop]: Found error trace [2023-02-16 03:14:13,391 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2023-02-16 03:14:13,391 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2023-02-16 03:14:13,391 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ULTIMATE.startErr24ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 52 more)] === [2023-02-16 03:14:13,391 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2023-02-16 03:14:13,391 INFO L85 PathProgramCache]: Analyzing trace with hash 762441251, now seen corresponding path program 1 times [2023-02-16 03:14:13,392 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2023-02-16 03:14:13,392 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [520611514] [2023-02-16 03:14:13,392 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:13,392 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2023-02-16 03:14:13,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:14,613 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 6 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2023-02-16 03:14:14,614 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2023-02-16 03:14:14,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [520611514] [2023-02-16 03:14:14,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [520611514] provided 0 perfect and 1 imperfect interpolant sequences [2023-02-16 03:14:14,614 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [275033007] [2023-02-16 03:14:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2023-02-16 03:14:14,614 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2023-02-16 03:14:14,614 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2023-02-16 03:14:14,617 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2023-02-16 03:14:14,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2023-02-16 03:14:14,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2023-02-16 03:14:14,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 306 conjuncts, 96 conjunts are in the unsatisfiable core [2023-02-16 03:14:14,758 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2023-02-16 03:14:14,761 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2023-02-16 03:14:14,793 INFO L321 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2023-02-16 03:14:14,795 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 11 [2023-02-16 03:14:14,887 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2023-02-16 03:14:14,946 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:14:14,949 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 23 treesize of output 22 [2023-02-16 03:14:15,032 INFO L321 Elim1Store]: treesize reduction 8, result has 61.9 percent of original size [2023-02-16 03:14:15,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 20 treesize of output 22 [2023-02-16 03:14:15,163 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 34 treesize of output 32 [2023-02-16 03:14:15,167 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 43 treesize of output 30 [2023-02-16 03:14:15,310 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 46 treesize of output 22 [2023-02-16 03:14:15,505 INFO L190 IndexEqualityManager]: detected not equals via solver [2023-02-16 03:14:15,509 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 03:14:15,510 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 4 select indices, 4 select index equivalence classes, 4 disjoint index pairs (out of 6 index pairs), introduced 5 new quantified variables, introduced 1 case distinctions, treesize of input 49 treesize of output 52 [2023-02-16 03:14:15,613 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2023-02-16 03:14:15,620 INFO L321 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2023-02-16 03:14:15,620 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 1 case distinctions, treesize of input 70 treesize of output 61 [2023-02-16 03:14:15,791 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 50 treesize of output 30 [2023-02-16 03:14:15,849 INFO L321 Elim1Store]: treesize reduction 14, result has 17.6 percent of original size [2023-02-16 03:14:15,849 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 5 select indices, 5 select index equivalence classes, 4 disjoint index pairs (out of 10 index pairs), introduced 6 new quantified variables, introduced 2 case distinctions, treesize of input 46 treesize of output 24 [2023-02-16 03:14:15,861 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2023-02-16 03:14:15,862 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2023-02-16 03:14:15,933 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 80 treesize of output 76 [2023-02-16 03:14:22,065 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification. DAG size of input: 31 DAG size of output: 27 (called from [L 361] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2023-02-16 03:14:34,618 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 855 treesize of output 839 [2023-02-16 03:14:39,453 INFO L321 Elim1Store]: treesize reduction 444, result has 65.9 percent of original size [2023-02-16 03:14:39,455 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 16 select indices, 16 select index equivalence classes, 0 disjoint index pairs (out of 120 index pairs), introduced 17 new quantified variables, introduced 120 case distinctions, treesize of input 3648790 treesize of output 3378752 [2023-02-16 03:14:39,794 INFO L321 Elim1Store]: treesize reduction 8, result has 90.1 percent of original size [2023-02-16 03:14:39,796 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 5 select indices, 5 select index equivalence classes, 0 disjoint index pairs (out of 10 index pairs), introduced 5 new quantified variables, introduced 10 case distinctions, treesize of input 3379081 treesize of output 3379143