./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 35987657 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/forester-heap/dll-simple-white-blue-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-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-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 4bb6c46a4de77c33ebd5db0d25fe513601ef52929336922ed8d1cb2e429dd77c --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 16:41:35,190 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 16:41:35,193 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 16:41:35,224 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 16:41:35,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 16:41:35,226 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 16:41:35,229 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 16:41:35,232 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 16:41:35,234 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 16:41:35,237 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 16:41:35,245 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 16:41:35,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 16:41:35,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 16:41:35,251 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 16:41:35,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 16:41:35,255 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 16:41:35,256 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 16:41:35,257 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 16:41:35,258 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 16:41:35,261 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 16:41:35,263 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 16:41:35,264 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 16:41:35,265 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 16:41:35,266 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 16:41:35,267 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 16:41:35,273 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 16:41:35,273 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 16:41:35,273 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 16:41:35,274 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 16:41:35,274 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 16:41:35,275 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 16:41:35,275 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 16:41:35,277 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 16:41:35,277 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 16:41:35,278 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 16:41:35,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 16:41:35,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 16:41:35,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 16:41:35,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 16:41:35,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 16:41:35,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 16:41:35,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 16:41:35,288 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-07-21 16:41:35,314 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 16:41:35,315 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 16:41:35,315 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 16:41:35,315 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 16:41:35,316 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 16:41:35,316 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 16:41:35,317 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 16:41:35,317 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 16:41:35,317 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 16:41:35,317 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 16:41:35,318 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 16:41:35,318 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 16:41:35,318 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 16:41:35,318 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 16:41:35,318 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 16:41:35,319 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 16:41:35,319 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 16:41:35,319 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 16:41:35,319 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 16:41:35,319 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 16:41:35,319 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 16:41:35,320 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 16:41:35,320 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 16:41:35,320 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 16:41:35,320 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:41:35,320 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 16:41:35,320 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 16:41:35,321 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 16:41:35,321 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 16:41:35,321 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 4bb6c46a4de77c33ebd5db0d25fe513601ef52929336922ed8d1cb2e429dd77c [2022-07-21 16:41:35,579 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 16:41:35,597 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 16:41:35,599 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 16:41:35,600 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 16:41:35,601 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 16:41:35,602 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2022-07-21 16:41:35,644 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0292ca3/b00831fc13654e749d0c07dd4f74952a/FLAG9e791debb [2022-07-21 16:41:36,059 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 16:41:36,060 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i [2022-07-21 16:41:36,074 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0292ca3/b00831fc13654e749d0c07dd4f74952a/FLAG9e791debb [2022-07-21 16:41:36,085 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/db0292ca3/b00831fc13654e749d0c07dd4f74952a [2022-07-21 16:41:36,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 16:41:36,087 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 16:41:36,089 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 16:41:36,089 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 16:41:36,091 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 16:41:36,092 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,093 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6db4ac41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36, skipping insertion in model container [2022-07-21 16:41:36,093 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,097 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 16:41:36,128 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 16:41:36,363 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2022-07-21 16:41:36,371 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:41:36,376 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 16:41:36,414 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/forester-heap/dll-simple-white-blue-1.i[22793,22806] [2022-07-21 16:41:36,419 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 16:41:36,438 INFO L208 MainTranslator]: Completed translation [2022-07-21 16:41:36,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36 WrapperNode [2022-07-21 16:41:36,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 16:41:36,440 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 16:41:36,440 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 16:41:36,440 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 16:41:36,445 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,465 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,484 INFO L137 Inliner]: procedures = 119, calls = 39, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 124 [2022-07-21 16:41:36,485 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 16:41:36,486 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 16:41:36,486 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 16:41:36,486 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 16:41:36,491 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,492 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,502 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,510 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,513 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,514 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 16:41:36,523 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 16:41:36,523 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 16:41:36,523 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 16:41:36,524 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (1/1) ... [2022-07-21 16:41:36,528 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 16:41:36,536 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:41:36,546 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) [2022-07-21 16:41:36,573 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 [2022-07-21 16:41:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 16:41:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 16:41:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 16:41:36,635 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 16:41:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-21 16:41:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-21 16:41:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 16:41:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 16:41:36,636 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 16:41:36,636 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 16:41:36,750 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 16:41:36,751 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 16:41:37,069 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 16:41:37,077 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 16:41:37,078 INFO L299 CfgBuilder]: Removed 8 assume(true) statements. [2022-07-21 16:41:37,079 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:37 BoogieIcfgContainer [2022-07-21 16:41:37,079 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 16:41:37,081 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 16:41:37,081 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 16:41:37,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 16:41:37,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 04:41:36" (1/3) ... [2022-07-21 16:41:37,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f93455e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:37, skipping insertion in model container [2022-07-21 16:41:37,083 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 04:41:36" (2/3) ... [2022-07-21 16:41:37,083 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f93455e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 04:41:37, skipping insertion in model container [2022-07-21 16:41:37,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:37" (3/3) ... [2022-07-21 16:41:37,084 INFO L111 eAbstractionObserver]: Analyzing ICFG dll-simple-white-blue-1.i [2022-07-21 16:41:37,099 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 16:41:37,099 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 61 error locations. [2022-07-21 16:41:37,139 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 16:41:37,144 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=FINITE_AUTOMATA, 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=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@720cbfdf, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@1c601d28 [2022-07-21 16:41:37,144 INFO L358 AbstractCegarLoop]: Starting to check reachability of 61 error locations. [2022-07-21 16:41:37,147 INFO L276 IsEmpty]: Start isEmpty. Operand has 127 states, 65 states have (on average 2.2) internal successors, (143), 126 states have internal predecessors, (143), 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) [2022-07-21 16:41:37,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-21 16:41:37,151 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:37,151 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-21 16:41:37,152 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:37,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:37,155 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2022-07-21 16:41:37,161 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:37,162 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [179451855] [2022-07-21 16:41:37,162 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:37,162 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:37,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:37,284 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:37,284 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:37,284 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [179451855] [2022-07-21 16:41:37,285 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [179451855] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:37,285 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:37,285 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:41:37,286 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513184012] [2022-07-21 16:41:37,287 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:37,290 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:41:37,291 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:37,313 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:41:37,314 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:41:37,317 INFO L87 Difference]: Start difference. First operand has 127 states, 65 states have (on average 2.2) internal successors, (143), 126 states have internal predecessors, (143), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-21 16:41:37,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:37,466 INFO L93 Difference]: Finished difference Result 154 states and 163 transitions. [2022-07-21 16:41:37,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:41:37,477 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-07-21 16:41:37,477 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:37,485 INFO L225 Difference]: With dead ends: 154 [2022-07-21 16:41:37,485 INFO L226 Difference]: Without dead ends: 150 [2022-07-21 16:41:37,486 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 [2022-07-21 16:41:37,488 INFO L413 NwaCegarLoop]: 100 mSDtfsCounter, 113 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 87 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 113 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 92 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 87 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:37,490 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [113 Valid, 122 Invalid, 92 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 87 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:37,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2022-07-21 16:41:37,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 121. [2022-07-21 16:41:37,517 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 63 states have (on average 2.0317460317460316) internal successors, (128), 120 states have internal predecessors, (128), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:41:37,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 128 transitions. [2022-07-21 16:41:37,519 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 128 transitions. Word has length 3 [2022-07-21 16:41:37,520 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:37,520 INFO L495 AbstractCegarLoop]: Abstraction has 121 states and 128 transitions. [2022-07-21 16:41:37,520 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-21 16:41:37,520 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 128 transitions. [2022-07-21 16:41:37,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2022-07-21 16:41:37,520 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:37,521 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1] [2022-07-21 16:41:37,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 16:41:37,521 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:37,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:37,522 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2022-07-21 16:41:37,522 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:37,522 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [741734828] [2022-07-21 16:41:37,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:37,523 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:37,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:37,557 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:37,557 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:37,557 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [741734828] [2022-07-21 16:41:37,558 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [741734828] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:37,558 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:37,558 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-21 16:41:37,558 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831025378] [2022-07-21 16:41:37,558 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:37,559 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-21 16:41:37,559 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:37,560 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-21 16:41:37,560 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-21 16:41:37,560 INFO L87 Difference]: Start difference. First operand 121 states and 128 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-21 16:41:37,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:37,675 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2022-07-21 16:41:37,675 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-21 16:41:37,675 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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 3 [2022-07-21 16:41:37,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:37,676 INFO L225 Difference]: With dead ends: 147 [2022-07-21 16:41:37,676 INFO L226 Difference]: Without dead ends: 147 [2022-07-21 16:41:37,677 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 [2022-07-21 16:41:37,678 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 108 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 82 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 108 SdHoareTripleChecker+Valid, 118 SdHoareTripleChecker+Invalid, 87 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 82 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:37,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [108 Valid, 118 Invalid, 87 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 82 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:37,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 147 states. [2022-07-21 16:41:37,683 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 147 to 118. [2022-07-21 16:41:37,683 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 63 states have (on average 1.9841269841269842) internal successors, (125), 117 states have internal predecessors, (125), 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) [2022-07-21 16:41:37,684 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 125 transitions. [2022-07-21 16:41:37,684 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 125 transitions. Word has length 3 [2022-07-21 16:41:37,684 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:37,684 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 125 transitions. [2022-07-21 16:41:37,685 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 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) [2022-07-21 16:41:37,685 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 125 transitions. [2022-07-21 16:41:37,685 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 16:41:37,685 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:37,685 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:37,685 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-21 16:41:37,686 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:37,686 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:37,686 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112042, now seen corresponding path program 1 times [2022-07-21 16:41:37,686 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:37,686 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2064055335] [2022-07-21 16:41:37,687 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:37,687 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:37,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:37,799 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:37,799 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:37,799 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2064055335] [2022-07-21 16:41:37,800 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2064055335] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:37,800 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:37,800 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-21 16:41:37,804 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1098019540] [2022-07-21 16:41:37,804 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:37,804 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-07-21 16:41:37,804 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:37,805 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-07-21 16:41:37,805 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-07-21 16:41:37,805 INFO L87 Difference]: Start difference. First operand 118 states and 125 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-21 16:41:37,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:37,925 INFO L93 Difference]: Finished difference Result 118 states and 125 transitions. [2022-07-21 16:41:37,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:41:37,926 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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 9 [2022-07-21 16:41:37,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:37,927 INFO L225 Difference]: With dead ends: 118 [2022-07-21 16:41:37,927 INFO L226 Difference]: Without dead ends: 118 [2022-07-21 16:41:37,928 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:41:37,929 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 165 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 39 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 165 SdHoareTripleChecker+Valid, 49 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 39 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:37,929 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [165 Valid, 49 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [39 Valid, 111 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:37,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2022-07-21 16:41:37,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 110. [2022-07-21 16:41:37,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 71 states have (on average 1.732394366197183) internal successors, (123), 109 states have internal predecessors, (123), 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) [2022-07-21 16:41:37,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 123 transitions. [2022-07-21 16:41:37,936 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 123 transitions. Word has length 9 [2022-07-21 16:41:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:37,937 INFO L495 AbstractCegarLoop]: Abstraction has 110 states and 123 transitions. [2022-07-21 16:41:37,937 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 states have internal predecessors, (9), 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) [2022-07-21 16:41:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 123 transitions. [2022-07-21 16:41:37,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 16:41:37,938 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:37,938 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:37,938 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-21 16:41:37,938 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:37,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:37,939 INFO L85 PathProgramCache]: Analyzing trace with hash 1837112043, now seen corresponding path program 1 times [2022-07-21 16:41:37,939 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:37,939 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [872566538] [2022-07-21 16:41:37,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:37,940 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:37,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:38,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:38,061 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:38,061 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [872566538] [2022-07-21 16:41:38,061 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [872566538] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:38,061 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:38,061 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 16:41:38,062 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827864122] [2022-07-21 16:41:38,062 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:38,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 16:41:38,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:38,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 16:41:38,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-07-21 16:41:38,063 INFO L87 Difference]: Start difference. First operand 110 states and 123 transitions. Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-07-21 16:41:38,240 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:38,240 INFO L93 Difference]: Finished difference Result 144 states and 156 transitions. [2022-07-21 16:41:38,241 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 16:41:38,241 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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 9 [2022-07-21 16:41:38,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:38,243 INFO L225 Difference]: With dead ends: 144 [2022-07-21 16:41:38,243 INFO L226 Difference]: Without dead ends: 144 [2022-07-21 16:41:38,243 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:41:38,252 INFO L413 NwaCegarLoop]: 34 mSDtfsCounter, 193 mSDsluCounter, 30 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 49 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 193 SdHoareTripleChecker+Valid, 64 SdHoareTripleChecker+Invalid, 218 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 49 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:38,253 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [193 Valid, 64 Invalid, 218 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [49 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:41:38,254 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-07-21 16:41:38,258 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 126. [2022-07-21 16:41:38,261 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 126 states, 90 states have (on average 1.5666666666666667) internal successors, (141), 125 states have internal predecessors, (141), 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) [2022-07-21 16:41:38,262 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 126 states to 126 states and 141 transitions. [2022-07-21 16:41:38,265 INFO L78 Accepts]: Start accepts. Automaton has 126 states and 141 transitions. Word has length 9 [2022-07-21 16:41:38,265 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:38,266 INFO L495 AbstractCegarLoop]: Abstraction has 126 states and 141 transitions. [2022-07-21 16:41:38,266 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 6 states have internal predecessors, (9), 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) [2022-07-21 16:41:38,266 INFO L276 IsEmpty]: Start isEmpty. Operand 126 states and 141 transitions. [2022-07-21 16:41:38,266 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 16:41:38,266 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:38,266 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:38,267 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-21 16:41:38,267 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:38,267 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:38,268 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413642, now seen corresponding path program 1 times [2022-07-21 16:41:38,268 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:38,268 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1121799905] [2022-07-21 16:41:38,268 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:38,269 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:38,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:38,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:38,329 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:38,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1121799905] [2022-07-21 16:41:38,329 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1121799905] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:38,329 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:38,330 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:41:38,331 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1232749162] [2022-07-21 16:41:38,331 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:38,331 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:41:38,332 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:38,332 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:41:38,332 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:41:38,332 INFO L87 Difference]: Start difference. First operand 126 states and 141 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-21 16:41:38,464 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:38,464 INFO L93 Difference]: Finished difference Result 125 states and 139 transitions. [2022-07-21 16:41:38,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:41:38,465 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-07-21 16:41:38,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:38,466 INFO L225 Difference]: With dead ends: 125 [2022-07-21 16:41:38,466 INFO L226 Difference]: Without dead ends: 125 [2022-07-21 16:41:38,466 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 [2022-07-21 16:41:38,469 INFO L413 NwaCegarLoop]: 99 mSDtfsCounter, 6 mSDsluCounter, 125 mSDsCounter, 0 mSdLazyCounter, 185 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 224 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 185 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:38,470 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 224 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 185 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:38,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 125 states. [2022-07-21 16:41:38,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 125 to 125. [2022-07-21 16:41:38,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 90 states have (on average 1.5444444444444445) internal successors, (139), 124 states have internal predecessors, (139), 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) [2022-07-21 16:41:38,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 139 transitions. [2022-07-21 16:41:38,479 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 139 transitions. Word has length 12 [2022-07-21 16:41:38,480 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:38,480 INFO L495 AbstractCegarLoop]: Abstraction has 125 states and 139 transitions. [2022-07-21 16:41:38,480 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-21 16:41:38,480 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 139 transitions. [2022-07-21 16:41:38,481 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-21 16:41:38,481 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:38,481 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:38,481 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-21 16:41:38,488 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:38,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:38,489 INFO L85 PathProgramCache]: Analyzing trace with hash -1363413643, now seen corresponding path program 1 times [2022-07-21 16:41:38,489 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:38,489 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1130899925] [2022-07-21 16:41:38,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:38,490 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:38,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:38,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:38,550 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:38,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1130899925] [2022-07-21 16:41:38,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1130899925] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:38,551 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:38,551 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 16:41:38,551 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [69728014] [2022-07-21 16:41:38,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:38,551 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:41:38,552 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:38,553 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:41:38,553 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:41:38,553 INFO L87 Difference]: Start difference. First operand 125 states and 139 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-21 16:41:38,650 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:38,650 INFO L93 Difference]: Finished difference Result 124 states and 137 transitions. [2022-07-21 16:41:38,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 16:41:38,651 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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 12 [2022-07-21 16:41:38,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:38,651 INFO L225 Difference]: With dead ends: 124 [2022-07-21 16:41:38,652 INFO L226 Difference]: Without dead ends: 124 [2022-07-21 16:41:38,652 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 [2022-07-21 16:41:38,653 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 7 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 234 SdHoareTripleChecker+Invalid, 171 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:38,654 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 234 Invalid, 171 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:38,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 124 states. [2022-07-21 16:41:38,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 124 to 124. [2022-07-21 16:41:38,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 124 states, 90 states have (on average 1.5222222222222221) internal successors, (137), 123 states have internal predecessors, (137), 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) [2022-07-21 16:41:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 124 states to 124 states and 137 transitions. [2022-07-21 16:41:38,671 INFO L78 Accepts]: Start accepts. Automaton has 124 states and 137 transitions. Word has length 12 [2022-07-21 16:41:38,672 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:38,672 INFO L495 AbstractCegarLoop]: Abstraction has 124 states and 137 transitions. [2022-07-21 16:41:38,672 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 5 states have internal predecessors, (12), 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) [2022-07-21 16:41:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 124 states and 137 transitions. [2022-07-21 16:41:38,672 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:41:38,673 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:38,673 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:38,673 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-21 16:41:38,673 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:38,674 INFO L85 PathProgramCache]: Analyzing trace with hash -1478309260, now seen corresponding path program 1 times [2022-07-21 16:41:38,674 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:38,674 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [908238020] [2022-07-21 16:41:38,674 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:38,674 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:38,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:38,765 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:38,765 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:38,765 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [908238020] [2022-07-21 16:41:38,765 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [908238020] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:38,765 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:38,766 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 16:41:38,766 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151942855] [2022-07-21 16:41:38,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:38,766 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 16:41:38,766 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:38,767 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 16:41:38,767 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 16:41:38,767 INFO L87 Difference]: Start difference. First operand 124 states and 137 transitions. Second operand has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-07-21 16:41:38,868 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:38,868 INFO L93 Difference]: Finished difference Result 132 states and 146 transitions. [2022-07-21 16:41:38,868 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 16:41:38,868 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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 16 [2022-07-21 16:41:38,868 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:38,869 INFO L225 Difference]: With dead ends: 132 [2022-07-21 16:41:38,869 INFO L226 Difference]: Without dead ends: 132 [2022-07-21 16:41:38,869 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-21 16:41:38,870 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 17 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 128 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 277 SdHoareTripleChecker+Invalid, 133 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 128 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:38,870 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [17 Valid, 277 Invalid, 133 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 128 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:38,870 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-07-21 16:41:38,872 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 128. [2022-07-21 16:41:38,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 128 states, 94 states have (on average 1.5106382978723405) internal successors, (142), 127 states have internal predecessors, (142), 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) [2022-07-21 16:41:38,873 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 128 states to 128 states and 142 transitions. [2022-07-21 16:41:38,873 INFO L78 Accepts]: Start accepts. Automaton has 128 states and 142 transitions. Word has length 16 [2022-07-21 16:41:38,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:38,873 INFO L495 AbstractCegarLoop]: Abstraction has 128 states and 142 transitions. [2022-07-21 16:41:38,873 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.2) internal successors, (16), 5 states have internal predecessors, (16), 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) [2022-07-21 16:41:38,873 INFO L276 IsEmpty]: Start isEmpty. Operand 128 states and 142 transitions. [2022-07-21 16:41:38,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:41:38,874 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:38,874 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:38,874 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-21 16:41:38,874 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:38,875 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:38,875 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362871, now seen corresponding path program 1 times [2022-07-21 16:41:38,875 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:38,875 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1976342273] [2022-07-21 16:41:38,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:38,875 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:38,944 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:38,944 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:38,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1976342273] [2022-07-21 16:41:38,944 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1976342273] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:38,944 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:38,945 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 16:41:38,945 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1526134491] [2022-07-21 16:41:38,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:38,945 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 16:41:38,945 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:38,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 16:41:38,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 16:41:38,946 INFO L87 Difference]: Start difference. First operand 128 states and 142 transitions. Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-07-21 16:41:39,229 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:39,230 INFO L93 Difference]: Finished difference Result 132 states and 144 transitions. [2022-07-21 16:41:39,230 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-21 16:41:39,230 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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 16 [2022-07-21 16:41:39,230 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:39,231 INFO L225 Difference]: With dead ends: 132 [2022-07-21 16:41:39,231 INFO L226 Difference]: Without dead ends: 132 [2022-07-21 16:41:39,231 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=72, Invalid=168, Unknown=0, NotChecked=0, Total=240 [2022-07-21 16:41:39,231 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 152 mSDsluCounter, 131 mSDsCounter, 0 mSdLazyCounter, 470 mSolverCounterSat, 34 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 152 SdHoareTripleChecker+Valid, 171 SdHoareTripleChecker+Invalid, 504 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 34 IncrementalHoareTripleChecker+Valid, 470 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:39,232 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [152 Valid, 171 Invalid, 504 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [34 Valid, 470 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:41:39,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2022-07-21 16:41:39,233 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2022-07-21 16:41:39,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 94 states have (on average 1.5) internal successors, (141), 126 states have internal predecessors, (141), 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) [2022-07-21 16:41:39,234 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 141 transitions. [2022-07-21 16:41:39,234 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 141 transitions. Word has length 16 [2022-07-21 16:41:39,234 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:39,234 INFO L495 AbstractCegarLoop]: Abstraction has 127 states and 141 transitions. [2022-07-21 16:41:39,234 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 9 states have internal predecessors, (16), 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) [2022-07-21 16:41:39,234 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 141 transitions. [2022-07-21 16:41:39,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-21 16:41:39,235 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:39,235 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:39,235 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2022-07-21 16:41:39,235 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:39,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:39,235 INFO L85 PathProgramCache]: Analyzing trace with hash 1546362872, now seen corresponding path program 1 times [2022-07-21 16:41:39,236 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:39,236 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [415205836] [2022-07-21 16:41:39,236 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:39,236 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:39,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:39,335 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:39,335 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:39,336 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [415205836] [2022-07-21 16:41:39,336 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [415205836] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:39,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:39,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-21 16:41:39,336 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1442855890] [2022-07-21 16:41:39,336 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:39,337 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-21 16:41:39,337 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:39,337 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-21 16:41:39,337 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:41:39,337 INFO L87 Difference]: Start difference. First operand 127 states and 141 transitions. Second operand has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-07-21 16:41:39,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:39,713 INFO L93 Difference]: Finished difference Result 128 states and 140 transitions. [2022-07-21 16:41:39,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-07-21 16:41:39,714 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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 16 [2022-07-21 16:41:39,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:39,715 INFO L225 Difference]: With dead ends: 128 [2022-07-21 16:41:39,715 INFO L226 Difference]: Without dead ends: 128 [2022-07-21 16:41:39,715 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 50 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=366, Unknown=0, NotChecked=0, Total=506 [2022-07-21 16:41:39,715 INFO L413 NwaCegarLoop]: 45 mSDtfsCounter, 153 mSDsluCounter, 140 mSDsCounter, 0 mSdLazyCounter, 489 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 153 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 527 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 489 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:39,716 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [153 Valid, 185 Invalid, 527 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 489 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:41:39,716 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2022-07-21 16:41:39,717 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 116. [2022-07-21 16:41:39,717 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 88 states have (on average 1.4772727272727273) internal successors, (130), 115 states have internal predecessors, (130), 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) [2022-07-21 16:41:39,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 130 transitions. [2022-07-21 16:41:39,718 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 130 transitions. Word has length 16 [2022-07-21 16:41:39,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:39,718 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 130 transitions. [2022-07-21 16:41:39,718 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 1.7777777777777777) internal successors, (16), 10 states have internal predecessors, (16), 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) [2022-07-21 16:41:39,718 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 130 transitions. [2022-07-21 16:41:39,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 16:41:39,718 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:39,718 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:39,718 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2022-07-21 16:41:39,718 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:39,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:39,719 INFO L85 PathProgramCache]: Analyzing trace with hash -102521317, now seen corresponding path program 1 times [2022-07-21 16:41:39,719 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:39,719 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1893613582] [2022-07-21 16:41:39,719 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:39,719 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:39,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:39,762 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:39,762 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:39,763 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1893613582] [2022-07-21 16:41:39,763 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1893613582] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:39,763 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:39,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 16:41:39,763 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692150588] [2022-07-21 16:41:39,763 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:39,764 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 16:41:39,764 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:39,764 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 16:41:39,764 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 16:41:39,764 INFO L87 Difference]: Start difference. First operand 116 states and 130 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-21 16:41:39,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:39,911 INFO L93 Difference]: Finished difference Result 116 states and 130 transitions. [2022-07-21 16:41:39,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:41:39,911 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2022-07-21 16:41:39,911 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:39,912 INFO L225 Difference]: With dead ends: 116 [2022-07-21 16:41:39,912 INFO L226 Difference]: Without dead ends: 116 [2022-07-21 16:41:39,912 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2022-07-21 16:41:39,912 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 56 mSDsluCounter, 128 mSDsCounter, 0 mSdLazyCounter, 253 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 195 SdHoareTripleChecker+Invalid, 262 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 253 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:39,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [56 Valid, 195 Invalid, 262 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 253 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:39,913 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-07-21 16:41:39,914 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 115. [2022-07-21 16:41:39,914 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 88 states have (on average 1.4659090909090908) internal successors, (129), 114 states have internal predecessors, (129), 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) [2022-07-21 16:41:39,915 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2022-07-21 16:41:39,915 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 19 [2022-07-21 16:41:39,915 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:39,915 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2022-07-21 16:41:39,915 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-21 16:41:39,915 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2022-07-21 16:41:39,916 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 16:41:39,916 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:39,916 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:39,916 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-21 16:41:39,916 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:39,917 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:39,917 INFO L85 PathProgramCache]: Analyzing trace with hash -102521316, now seen corresponding path program 1 times [2022-07-21 16:41:39,917 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:39,917 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [693284693] [2022-07-21 16:41:39,917 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:39,917 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:39,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:39,968 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:39,968 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:39,968 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [693284693] [2022-07-21 16:41:39,969 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [693284693] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:39,969 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:39,969 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-21 16:41:39,969 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [276817107] [2022-07-21 16:41:39,969 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:39,969 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 16:41:39,969 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:39,970 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 16:41:39,970 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 16:41:39,970 INFO L87 Difference]: Start difference. First operand 115 states and 129 transitions. Second operand has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-21 16:41:40,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:40,123 INFO L93 Difference]: Finished difference Result 112 states and 126 transitions. [2022-07-21 16:41:40,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:41:40,124 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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 19 [2022-07-21 16:41:40,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:40,124 INFO L225 Difference]: With dead ends: 112 [2022-07-21 16:41:40,124 INFO L226 Difference]: Without dead ends: 112 [2022-07-21 16:41:40,125 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:41:40,125 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 20 mSDsluCounter, 141 mSDsCounter, 0 mSdLazyCounter, 225 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 219 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 225 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:40,125 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [20 Valid, 219 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 225 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 16:41:40,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-07-21 16:41:40,127 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 112. [2022-07-21 16:41:40,127 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 112 states, 88 states have (on average 1.4318181818181819) internal successors, (126), 111 states have internal predecessors, (126), 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) [2022-07-21 16:41:40,127 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 126 transitions. [2022-07-21 16:41:40,128 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 126 transitions. Word has length 19 [2022-07-21 16:41:40,128 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:40,128 INFO L495 AbstractCegarLoop]: Abstraction has 112 states and 126 transitions. [2022-07-21 16:41:40,128 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.8) internal successors, (19), 6 states have internal predecessors, (19), 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) [2022-07-21 16:41:40,128 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 126 transitions. [2022-07-21 16:41:40,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 16:41:40,129 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:40,129 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] [2022-07-21 16:41:40,129 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-21 16:41:40,129 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:40,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:40,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1813630322, now seen corresponding path program 1 times [2022-07-21 16:41:40,130 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:40,130 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1697954353] [2022-07-21 16:41:40,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:40,130 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:40,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:40,226 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:40,226 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1697954353] [2022-07-21 16:41:40,226 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1697954353] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 16:41:40,226 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1180689406] [2022-07-21 16:41:40,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:40,227 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:41:40,227 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:41:40,228 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) [2022-07-21 16:41:40,236 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-21 16:41:40,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:40,345 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 44 conjunts are in the unsatisfiable core [2022-07-21 16:41:40,359 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:41:40,409 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 16:41:40,476 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-21 16:41:40,477 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 18 [2022-07-21 16:41:40,506 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-21 16:41:40,507 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 16:41:40,572 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 16:41:40,578 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 16:41:40,613 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:41:40,614 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 31 treesize of output 26 [2022-07-21 16:41:40,636 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:41:40,638 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-07-21 16:41:40,720 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 22 treesize of output 10 [2022-07-21 16:41:40,724 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 25 treesize of output 13 [2022-07-21 16:41:40,733 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:40,733 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-21 16:41:40,982 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 33 [2022-07-21 16:41:41,043 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:41,044 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1180689406] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-21 16:41:41,044 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-21 16:41:41,044 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 9, 8] total 20 [2022-07-21 16:41:41,044 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2052253496] [2022-07-21 16:41:41,044 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-21 16:41:41,045 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-07-21 16:41:41,045 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:41,045 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-07-21 16:41:41,045 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=63, Invalid=357, Unknown=0, NotChecked=0, Total=420 [2022-07-21 16:41:41,046 INFO L87 Difference]: Start difference. First operand 112 states and 126 transitions. Second operand has 21 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 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) [2022-07-21 16:41:41,683 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:41,683 INFO L93 Difference]: Finished difference Result 180 states and 196 transitions. [2022-07-21 16:41:41,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2022-07-21 16:41:41,684 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 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 [2022-07-21 16:41:41,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:41,685 INFO L225 Difference]: With dead ends: 180 [2022-07-21 16:41:41,685 INFO L226 Difference]: Without dead ends: 180 [2022-07-21 16:41:41,686 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 29 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 195 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=201, Invalid=855, Unknown=0, NotChecked=0, Total=1056 [2022-07-21 16:41:41,686 INFO L413 NwaCegarLoop]: 46 mSDtfsCounter, 749 mSDsluCounter, 214 mSDsCounter, 0 mSdLazyCounter, 620 mSolverCounterSat, 85 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 749 SdHoareTripleChecker+Valid, 260 SdHoareTripleChecker+Invalid, 793 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 85 IncrementalHoareTripleChecker+Valid, 620 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 88 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:41,686 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [749 Valid, 260 Invalid, 793 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [85 Valid, 620 Invalid, 0 Unknown, 88 Unchecked, 0.4s Time] [2022-07-21 16:41:41,687 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-21 16:41:41,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 118. [2022-07-21 16:41:41,689 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 94 states have (on average 1.425531914893617) internal successors, (134), 117 states have internal predecessors, (134), 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) [2022-07-21 16:41:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 134 transitions. [2022-07-21 16:41:41,689 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 134 transitions. Word has length 20 [2022-07-21 16:41:41,689 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:41,689 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 134 transitions. [2022-07-21 16:41:41,690 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 20 states have (on average 2.6) internal successors, (52), 21 states have internal predecessors, (52), 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) [2022-07-21 16:41:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 134 transitions. [2022-07-21 16:41:41,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-07-21 16:41:41,690 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:41,690 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] [2022-07-21 16:41:41,738 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-21 16:41:41,908 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,SelfDestructingSolverStorable11 [2022-07-21 16:41:41,909 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:41,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:41,909 INFO L85 PathProgramCache]: Analyzing trace with hash 1813630321, now seen corresponding path program 1 times [2022-07-21 16:41:41,909 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:41,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2057564507] [2022-07-21 16:41:41,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:41,909 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:41,983 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:41,983 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:41,983 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2057564507] [2022-07-21 16:41:41,984 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2057564507] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-21 16:41:41,984 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1031239159] [2022-07-21 16:41:41,984 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:41,984 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-21 16:41:41,984 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 16:41:42,000 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) [2022-07-21 16:41:42,002 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-21 16:41:42,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:42,087 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 19 conjunts are in the unsatisfiable core [2022-07-21 16:41:42,090 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 16:41:42,100 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 13 treesize of output 9 [2022-07-21 16:41:42,114 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:41:42,115 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 21 treesize of output 20 [2022-07-21 16:41:42,121 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-21 16:41:42,122 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 [2022-07-21 16:41:42,173 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-21 16:41:42,174 INFO L390 Elim1Store]: Elim1 did not use preprocessing 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 19 treesize of output 19 [2022-07-21 16:41:42,204 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:42,204 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 16:41:42,204 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1031239159] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:42,204 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-07-21 16:41:42,204 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [7] total 14 [2022-07-21 16:41:42,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [415193794] [2022-07-21 16:41:42,205 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:42,205 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:41:42,205 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:42,205 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:41:42,206 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2022-07-21 16:41:42,206 INFO L87 Difference]: Start difference. First operand 118 states and 134 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:41:42,259 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:42,259 INFO L93 Difference]: Finished difference Result 118 states and 132 transitions. [2022-07-21 16:41:42,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-21 16:41:42,260 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 20 [2022-07-21 16:41:42,260 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:42,260 INFO L225 Difference]: With dead ends: 118 [2022-07-21 16:41:42,261 INFO L226 Difference]: Without dead ends: 117 [2022-07-21 16:41:42,261 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=172, Unknown=0, NotChecked=0, Total=210 [2022-07-21 16:41:42,261 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 7 mSDsluCounter, 104 mSDsCounter, 0 mSdLazyCounter, 60 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 189 SdHoareTripleChecker+Invalid, 109 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 60 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:42,262 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 189 Invalid, 109 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 60 Invalid, 0 Unknown, 42 Unchecked, 0.0s Time] [2022-07-21 16:41:42,262 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-07-21 16:41:42,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 115. [2022-07-21 16:41:42,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 115 states, 91 states have (on average 1.4175824175824177) internal successors, (129), 114 states have internal predecessors, (129), 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) [2022-07-21 16:41:42,264 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 115 states to 115 states and 129 transitions. [2022-07-21 16:41:42,264 INFO L78 Accepts]: Start accepts. Automaton has 115 states and 129 transitions. Word has length 20 [2022-07-21 16:41:42,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:42,264 INFO L495 AbstractCegarLoop]: Abstraction has 115 states and 129 transitions. [2022-07-21 16:41:42,264 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-21 16:41:42,264 INFO L276 IsEmpty]: Start isEmpty. Operand 115 states and 129 transitions. [2022-07-21 16:41:42,265 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 16:41:42,265 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:42,265 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] [2022-07-21 16:41:42,304 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-21 16:41:42,482 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,SelfDestructingSolverStorable12 [2022-07-21 16:41:42,483 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:42,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:42,483 INFO L85 PathProgramCache]: Analyzing trace with hash 386334286, now seen corresponding path program 1 times [2022-07-21 16:41:42,483 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:42,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [78827263] [2022-07-21 16:41:42,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:42,484 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:42,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:42,608 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:42,609 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:42,609 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [78827263] [2022-07-21 16:41:42,609 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [78827263] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:42,609 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:42,609 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-21 16:41:42,609 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1444496423] [2022-07-21 16:41:42,609 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:42,610 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-21 16:41:42,610 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:42,610 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-21 16:41:42,610 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:41:42,610 INFO L87 Difference]: Start difference. First operand 115 states and 129 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) [2022-07-21 16:41:42,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:42,884 INFO L93 Difference]: Finished difference Result 144 states and 159 transitions. [2022-07-21 16:41:42,884 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-21 16:41:42,884 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 [2022-07-21 16:41:42,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:42,885 INFO L225 Difference]: With dead ends: 144 [2022-07-21 16:41:42,885 INFO L226 Difference]: Without dead ends: 144 [2022-07-21 16:41:42,885 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=119, Unknown=0, NotChecked=0, Total=182 [2022-07-21 16:41:42,886 INFO L413 NwaCegarLoop]: 32 mSDtfsCounter, 209 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 45 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 209 SdHoareTripleChecker+Valid, 125 SdHoareTripleChecker+Invalid, 342 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 45 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:42,886 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [209 Valid, 125 Invalid, 342 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [45 Valid, 297 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:41:42,886 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2022-07-21 16:41:42,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 116. [2022-07-21 16:41:42,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 116 states, 93 states have (on average 1.4086021505376345) internal successors, (131), 115 states have internal predecessors, (131), 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) [2022-07-21 16:41:42,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 116 states to 116 states and 131 transitions. [2022-07-21 16:41:42,888 INFO L78 Accepts]: Start accepts. Automaton has 116 states and 131 transitions. Word has length 21 [2022-07-21 16:41:42,888 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:42,888 INFO L495 AbstractCegarLoop]: Abstraction has 116 states and 131 transitions. [2022-07-21 16:41:42,889 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) [2022-07-21 16:41:42,901 INFO L276 IsEmpty]: Start isEmpty. Operand 116 states and 131 transitions. [2022-07-21 16:41:42,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-21 16:41:42,902 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:42,902 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] [2022-07-21 16:41:42,902 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-21 16:41:42,902 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:42,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:42,903 INFO L85 PathProgramCache]: Analyzing trace with hash 386334287, now seen corresponding path program 1 times [2022-07-21 16:41:42,903 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:42,903 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1230370391] [2022-07-21 16:41:42,903 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:42,903 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:42,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:43,005 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:43,005 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:43,005 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1230370391] [2022-07-21 16:41:43,006 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1230370391] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:43,006 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:43,006 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-21 16:41:43,006 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131778068] [2022-07-21 16:41:43,006 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:43,006 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-21 16:41:43,007 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:43,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-21 16:41:43,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-21 16:41:43,009 INFO L87 Difference]: Start difference. First operand 116 states and 131 transitions. Second operand has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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) [2022-07-21 16:41:43,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:43,390 INFO L93 Difference]: Finished difference Result 168 states and 182 transitions. [2022-07-21 16:41:43,390 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-21 16:41:43,390 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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 [2022-07-21 16:41:43,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:43,391 INFO L225 Difference]: With dead ends: 168 [2022-07-21 16:41:43,391 INFO L226 Difference]: Without dead ends: 168 [2022-07-21 16:41:43,392 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=83, Invalid=223, Unknown=0, NotChecked=0, Total=306 [2022-07-21 16:41:43,393 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 233 mSDsluCounter, 153 mSDsCounter, 0 mSdLazyCounter, 484 mSolverCounterSat, 44 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 233 SdHoareTripleChecker+Valid, 194 SdHoareTripleChecker+Invalid, 528 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 44 IncrementalHoareTripleChecker+Valid, 484 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:43,393 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [233 Valid, 194 Invalid, 528 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [44 Valid, 484 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-07-21 16:41:43,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 168 states. [2022-07-21 16:41:43,396 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 168 to 118. [2022-07-21 16:41:43,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 118 states, 95 states have (on average 1.4) internal successors, (133), 117 states have internal predecessors, (133), 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) [2022-07-21 16:41:43,397 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 118 states to 118 states and 133 transitions. [2022-07-21 16:41:43,397 INFO L78 Accepts]: Start accepts. Automaton has 118 states and 133 transitions. Word has length 21 [2022-07-21 16:41:43,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:43,397 INFO L495 AbstractCegarLoop]: Abstraction has 118 states and 133 transitions. [2022-07-21 16:41:43,397 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.625) internal successors, (21), 9 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) [2022-07-21 16:41:43,397 INFO L276 IsEmpty]: Start isEmpty. Operand 118 states and 133 transitions. [2022-07-21 16:41:43,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-07-21 16:41:43,398 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:43,398 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] [2022-07-21 16:41:43,399 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-21 16:41:43,399 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:43,400 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:43,400 INFO L85 PathProgramCache]: Analyzing trace with hash -490735634, now seen corresponding path program 1 times [2022-07-21 16:41:43,400 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:43,400 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [221246284] [2022-07-21 16:41:43,400 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:43,400 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:43,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 16:41:43,479 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 16:41:43,479 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-21 16:41:43,479 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [221246284] [2022-07-21 16:41:43,479 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [221246284] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 16:41:43,479 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 16:41:43,479 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-21 16:41:43,479 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [925505069] [2022-07-21 16:41:43,479 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 16:41:43,480 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 16:41:43,480 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-21 16:41:43,480 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 16:41:43,480 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-07-21 16:41:43,480 INFO L87 Difference]: Start difference. First operand 118 states and 133 transitions. Second operand has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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) [2022-07-21 16:41:43,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 16:41:43,676 INFO L93 Difference]: Finished difference Result 180 states and 199 transitions. [2022-07-21 16:41:43,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-21 16:41:43,676 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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 [2022-07-21 16:41:43,676 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 16:41:43,677 INFO L225 Difference]: With dead ends: 180 [2022-07-21 16:41:43,677 INFO L226 Difference]: Without dead ends: 180 [2022-07-21 16:41:43,677 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2022-07-21 16:41:43,677 INFO L413 NwaCegarLoop]: 120 mSDtfsCounter, 49 mSDsluCounter, 287 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 407 SdHoareTripleChecker+Invalid, 209 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-21 16:41:43,678 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [49 Valid, 407 Invalid, 209 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-21 16:41:43,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-07-21 16:41:43,679 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 132. [2022-07-21 16:41:43,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 132 states, 109 states have (on average 1.3761467889908257) internal successors, (150), 131 states have internal predecessors, (150), 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) [2022-07-21 16:41:43,680 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 150 transitions. [2022-07-21 16:41:43,680 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 150 transitions. Word has length 22 [2022-07-21 16:41:43,680 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 16:41:43,680 INFO L495 AbstractCegarLoop]: Abstraction has 132 states and 150 transitions. [2022-07-21 16:41:43,680 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 3.6666666666666665) internal successors, (22), 6 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) [2022-07-21 16:41:43,681 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 150 transitions. [2022-07-21 16:41:43,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-21 16:41:43,681 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 16:41:43,681 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] [2022-07-21 16:41:43,681 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-21 16:41:43,681 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 58 more)] === [2022-07-21 16:41:43,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 16:41:43,682 INFO L85 PathProgramCache]: Analyzing trace with hash 1900065523, now seen corresponding path program 1 times [2022-07-21 16:41:43,682 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 16:41:43,682 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1673732657] [2022-07-21 16:41:43,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 16:41:43,682 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 16:41:43,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 16:41:43,706 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 16:41:43,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 16:41:43,754 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 16:41:43,754 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 16:41:43,755 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr52ASSERT_VIOLATIONMEMORY_LEAK (60 of 61 remaining) [2022-07-21 16:41:43,756 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (59 of 61 remaining) [2022-07-21 16:41:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (58 of 61 remaining) [2022-07-21 16:41:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (57 of 61 remaining) [2022-07-21 16:41:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (56 of 61 remaining) [2022-07-21 16:41:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (55 of 61 remaining) [2022-07-21 16:41:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (54 of 61 remaining) [2022-07-21 16:41:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (53 of 61 remaining) [2022-07-21 16:41:43,757 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (52 of 61 remaining) [2022-07-21 16:41:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (51 of 61 remaining) [2022-07-21 16:41:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (50 of 61 remaining) [2022-07-21 16:41:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (49 of 61 remaining) [2022-07-21 16:41:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (48 of 61 remaining) [2022-07-21 16:41:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (47 of 61 remaining) [2022-07-21 16:41:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (46 of 61 remaining) [2022-07-21 16:41:43,758 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (45 of 61 remaining) [2022-07-21 16:41:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (44 of 61 remaining) [2022-07-21 16:41:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (43 of 61 remaining) [2022-07-21 16:41:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (42 of 61 remaining) [2022-07-21 16:41:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (41 of 61 remaining) [2022-07-21 16:41:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (40 of 61 remaining) [2022-07-21 16:41:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (39 of 61 remaining) [2022-07-21 16:41:43,759 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (38 of 61 remaining) [2022-07-21 16:41:43,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (37 of 61 remaining) [2022-07-21 16:41:43,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (36 of 61 remaining) [2022-07-21 16:41:43,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (35 of 61 remaining) [2022-07-21 16:41:43,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (34 of 61 remaining) [2022-07-21 16:41:43,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE (33 of 61 remaining) [2022-07-21 16:41:43,760 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE (32 of 61 remaining) [2022-07-21 16:41:43,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr28REQUIRES_VIOLATIONMEMORY_DEREFERENCE (31 of 61 remaining) [2022-07-21 16:41:43,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr29REQUIRES_VIOLATIONMEMORY_DEREFERENCE (30 of 61 remaining) [2022-07-21 16:41:43,761 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr30REQUIRES_VIOLATIONMEMORY_DEREFERENCE (29 of 61 remaining) [2022-07-21 16:41:43,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr31REQUIRES_VIOLATIONMEMORY_DEREFERENCE (28 of 61 remaining) [2022-07-21 16:41:43,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr32REQUIRES_VIOLATIONMEMORY_DEREFERENCE (27 of 61 remaining) [2022-07-21 16:41:43,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr33REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 61 remaining) [2022-07-21 16:41:43,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr34REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 61 remaining) [2022-07-21 16:41:43,762 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr35REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 61 remaining) [2022-07-21 16:41:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr36REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 61 remaining) [2022-07-21 16:41:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr37REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 61 remaining) [2022-07-21 16:41:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr38REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 61 remaining) [2022-07-21 16:41:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr39REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 61 remaining) [2022-07-21 16:41:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr40REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 61 remaining) [2022-07-21 16:41:43,763 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr41REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr42REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr43REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr44REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr45REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr46REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr47REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr48REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 61 remaining) [2022-07-21 16:41:43,764 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr49REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr50REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr51REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr53REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr54REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr55REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr56REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr57ASSERT_VIOLATIONMEMORY_FREE (3 of 61 remaining) [2022-07-21 16:41:43,765 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr58ASSERT_VIOLATIONMEMORY_FREE (2 of 61 remaining) [2022-07-21 16:41:43,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr59ASSERT_VIOLATIONMEMORY_FREE (1 of 61 remaining) [2022-07-21 16:41:43,766 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr60ASSERT_VIOLATIONMEMORY_LEAK (0 of 61 remaining) [2022-07-21 16:41:43,767 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-21 16:41:43,769 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 16:41:43,771 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 16:41:43,796 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 04:41:43 BoogieIcfgContainer [2022-07-21 16:41:43,796 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 16:41:43,797 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 16:41:43,797 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 16:41:43,797 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 16:41:43,798 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 04:41:37" (3/4) ... [2022-07-21 16:41:43,799 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 16:41:43,840 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 16:41:43,840 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 16:41:43,842 INFO L158 Benchmark]: Toolchain (without parser) took 7754.85ms. Allocated memory was 54.5MB in the beginning and 132.1MB in the end (delta: 77.6MB). Free memory was 30.7MB in the beginning and 41.4MB in the end (delta: -10.7MB). Peak memory consumption was 66.0MB. Max. memory is 16.1GB. [2022-07-21 16:41:43,843 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 16:41:43,843 INFO L158 Benchmark]: CACSL2BoogieTranslator took 349.91ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.4MB in the beginning and 49.7MB in the end (delta: -19.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2022-07-21 16:41:43,843 INFO L158 Benchmark]: Boogie Procedure Inliner took 45.52ms. Allocated memory is still 73.4MB. Free memory was 49.7MB in the beginning and 47.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 16:41:43,843 INFO L158 Benchmark]: Boogie Preprocessor took 36.44ms. Allocated memory is still 73.4MB. Free memory was 47.6MB in the beginning and 45.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 16:41:43,844 INFO L158 Benchmark]: RCFGBuilder took 556.76ms. Allocated memory is still 73.4MB. Free memory was 45.8MB in the beginning and 41.4MB in the end (delta: 4.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. [2022-07-21 16:41:43,846 INFO L158 Benchmark]: TraceAbstraction took 6715.98ms. Allocated memory was 73.4MB in the beginning and 132.1MB in the end (delta: 58.7MB). Free memory was 40.9MB in the beginning and 43.5MB in the end (delta: -2.5MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. [2022-07-21 16:41:43,846 INFO L158 Benchmark]: Witness Printer took 44.57ms. Allocated memory is still 132.1MB. Free memory was 43.5MB in the beginning and 41.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 16:41:43,850 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 54.5MB. Free memory was 35.5MB in the beginning and 35.5MB in the end (delta: 33.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 349.91ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.4MB in the beginning and 49.7MB in the end (delta: -19.2MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 45.52ms. Allocated memory is still 73.4MB. Free memory was 49.7MB in the beginning and 47.6MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 36.44ms. Allocated memory is still 73.4MB. Free memory was 47.6MB in the beginning and 45.8MB in the end (delta: 1.8MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 556.76ms. Allocated memory is still 73.4MB. Free memory was 45.8MB in the beginning and 41.4MB in the end (delta: 4.4MB). Peak memory consumption was 12.8MB. Max. memory is 16.1GB. * TraceAbstraction took 6715.98ms. Allocated memory was 73.4MB in the beginning and 132.1MB in the end (delta: 58.7MB). Free memory was 40.9MB in the beginning and 43.5MB in the end (delta: -2.5MB). Peak memory consumption was 55.5MB. Max. memory is 16.1GB. * Witness Printer took 44.57ms. Allocated memory is still 132.1MB. Free memory was 43.5MB in the beginning and 41.4MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 1063]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L1000] SLL* head = malloc(sizeof(SLL)); [L1001] head->next = ((void*)0) VAL [head={-1:0}] [L1002] head->prev = ((void*)0) VAL [head={-1:0}] [L1003] head->data = 0 VAL [head={-1:0}] [L1005] SLL* x = head; VAL [head={-1:0}, x={-1:0}] [L1008] COND FALSE !(__VERIFIER_nondet_int()) [L1019] COND TRUE __VERIFIER_nondet_int() [L1020] x = malloc(sizeof(SLL)) [L1021] x->data = 1 VAL [head={-1:0}, x={-2:0}] [L1022] x->next = head VAL [head={-1:0}, x={-2:0}] [L1023] x->prev = ((void*)0) VAL [head={-1:0}, x={-2:0}] [L1024] head = x VAL [head={-2:0}, x={-2:0}] [L1050] x = head VAL [head={-2:0}, x={-2:0}] [L1053] EXPR x->data VAL [head={-2:0}, x={-2:0}, x->data=1] [L1053] COND FALSE !(x->data != 1) [L1059] EXPR x->next VAL [head={-2:0}, x={-2:0}, x->next={-1:0}] [L1059] x = x->next [L1060] COND TRUE \read(*x) VAL [head={-2:0}, x={-1:0}] [L1062] EXPR x->data VAL [head={-2:0}, x={-1:0}, x->data=0] [L1062] COND TRUE x->data != 1 [L1063] reach_error() VAL [head={-2:0}, x={-1:0}] - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 1073]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 997]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 127 locations, 61 error locations. Started 1 CEGAR loops. OverallTime: 6.6s, OverallIterations: 17, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 3.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 2237 SdHoareTripleChecker+Valid, 2.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 2237 mSDsluCounter, 3033 SdHoareTripleChecker+Invalid, 2.0s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 130 IncrementalHoareTripleChecker+Unchecked, 1917 mSDsCounter, 375 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 4034 IncrementalHoareTripleChecker+Invalid, 4539 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 375 mSolverCounterUnsat, 1116 mSDtfsCounter, 4034 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 224 GetRequests, 69 SyntacticMatches, 3 SemanticMatches, 152 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 345 ImplicationChecksByTransitivity, 1.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=132occurred in iteration=16, InterpolantAutomatonStates: 131, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 16 MinimizatonAttempts, 296 StatesRemovedByMinimization, 13 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 301 NumberOfCodeBlocks, 301 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 279 ConstructedInterpolants, 10 QuantifiedInterpolants, 2466 SizeOfPredicates, 18 NumberOfNonLiveVariables, 362 ConjunctsInSsa, 63 ConjunctsInUnsatCore, 19 InterpolantComputations, 15 PerfectInterpolantSequences, 2/6 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-21 16:41:43,908 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup)