./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/heap-manipulation/tree-4.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 791161d1 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/heap-manipulation/tree-4.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 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 05:25:33,453 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 05:25:33,455 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 05:25:33,486 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 05:25:33,486 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 05:25:33,487 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 05:25:33,493 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 05:25:33,498 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 05:25:33,500 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 05:25:33,501 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 05:25:33,502 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 05:25:33,505 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 05:25:33,506 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 05:25:33,508 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 05:25:33,509 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 05:25:33,512 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 05:25:33,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 05:25:33,519 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 05:25:33,522 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 05:25:33,525 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 05:25:33,526 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 05:25:33,529 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 05:25:33,530 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 05:25:33,531 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 05:25:33,532 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 05:25:33,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 05:25:33,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 05:25:33,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 05:25:33,535 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 05:25:33,536 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 05:25:33,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 05:25:33,537 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 05:25:33,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 05:25:33,538 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 05:25:33,539 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 05:25:33,539 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 05:25:33,540 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 05:25:33,540 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 05:25:33,541 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 05:25:33,541 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 05:25:33,542 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 05:25:33,543 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 05:25:33,543 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2022-07-23 05:25:33,569 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 05:25:33,570 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 05:25:33,570 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 05:25:33,571 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 05:25:33,571 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 05:25:33,572 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 05:25:33,572 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 05:25:33,572 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 05:25:33,573 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 05:25:33,574 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 05:25:33,574 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 05:25:33,574 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 05:25:33,574 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 05:25:33,575 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 05:25:33,575 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 05:25:33,575 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 05:25:33,575 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 05:25:33,575 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 05:25:33,576 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 05:25:33,577 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 05:25:33,577 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 05:25:33,578 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 05:25:33,578 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 05:25:33,578 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 05:25:33,578 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:25:33,578 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 05:25:33,579 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 05:25:33,579 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 05:25:33,579 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 05:25:33,579 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 93cf6e13715dcd5309cb599b4358d41a64464f02c52b3716bc554a9d0e833f5e [2022-07-23 05:25:33,823 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 05:25:33,851 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 05:25:33,854 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 05:25:33,855 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 05:25:33,856 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 05:25:33,857 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-23 05:25:33,928 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6ea366e/1227bf51acfe4c7ba43cfb6304c0e6b1/FLAGdf51ab92c [2022-07-23 05:25:34,422 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 05:25:34,422 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/heap-manipulation/tree-4.i [2022-07-23 05:25:34,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6ea366e/1227bf51acfe4c7ba43cfb6304c0e6b1/FLAGdf51ab92c [2022-07-23 05:25:34,882 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5d6ea366e/1227bf51acfe4c7ba43cfb6304c0e6b1 [2022-07-23 05:25:34,884 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 05:25:34,887 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 05:25:34,888 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:34,888 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 05:25:34,891 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 05:25:34,892 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:34" (1/1) ... [2022-07-23 05:25:34,893 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@224e3d57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:34, skipping insertion in model container [2022-07-23 05:25:34,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 05:25:34" (1/1) ... [2022-07-23 05:25:34,899 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 05:25:34,932 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 05:25:35,202 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/heap-manipulation/tree-4.i[22626,22639] [2022-07-23 05:25:35,234 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:35,242 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 05:25:35,274 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/heap-manipulation/tree-4.i[22626,22639] [2022-07-23 05:25:35,282 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 05:25:35,305 INFO L208 MainTranslator]: Completed translation [2022-07-23 05:25:35,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35 WrapperNode [2022-07-23 05:25:35,306 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 05:25:35,307 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 05:25:35,307 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 05:25:35,307 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 05:25:35,314 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,332 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,353 INFO L137 Inliner]: procedures = 122, calls = 44, calls flagged for inlining = 5, calls inlined = 5, statements flattened = 155 [2022-07-23 05:25:35,354 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 05:25:35,355 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 05:25:35,355 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 05:25:35,355 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 05:25:35,361 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,361 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,365 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,376 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,396 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,397 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,400 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 05:25:35,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 05:25:35,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 05:25:35,401 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 05:25:35,402 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (1/1) ... [2022-07-23 05:25:35,412 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 05:25:35,422 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:25:35,432 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) [2022-07-23 05:25:35,437 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 [2022-07-23 05:25:35,457 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-23 05:25:35,459 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2022-07-23 05:25:35,459 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2022-07-23 05:25:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-23 05:25:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 05:25:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-23 05:25:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 05:25:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 05:25:35,460 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 05:25:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-23 05:25:35,461 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 05:25:35,461 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 05:25:35,565 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 05:25:35,574 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 05:25:35,969 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 05:25:35,975 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 05:25:35,980 INFO L299 CfgBuilder]: Removed 11 assume(true) statements. [2022-07-23 05:25:35,982 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:25:35 BoogieIcfgContainer [2022-07-23 05:25:35,984 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 05:25:35,985 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 05:25:35,987 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 05:25:35,989 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 05:25:35,990 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 05:25:34" (1/3) ... [2022-07-23 05:25:35,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4887a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:25:35, skipping insertion in model container [2022-07-23 05:25:35,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 05:25:35" (2/3) ... [2022-07-23 05:25:35,991 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c4887a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 05:25:35, skipping insertion in model container [2022-07-23 05:25:35,991 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 05:25:35" (3/3) ... [2022-07-23 05:25:35,993 INFO L111 eAbstractionObserver]: Analyzing ICFG tree-4.i [2022-07-23 05:25:36,008 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 05:25:36,009 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 65 error locations. [2022-07-23 05:25:36,058 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 05:25:36,064 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@773d8d37, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@607c9dc [2022-07-23 05:25:36,064 INFO L358 AbstractCegarLoop]: Starting to check reachability of 65 error locations. [2022-07-23 05:25:36,068 INFO L276 IsEmpty]: Start isEmpty. Operand has 149 states, 79 states have (on average 2.1772151898734178) internal successors, (172), 147 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-07-23 05:25:36,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 6 [2022-07-23 05:25:36,073 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:36,074 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1] [2022-07-23 05:25:36,074 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:36,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:36,079 INFO L85 PathProgramCache]: Analyzing trace with hash 31591498, now seen corresponding path program 1 times [2022-07-23 05:25:36,086 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:36,086 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2049260022] [2022-07-23 05:25:36,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:36,087 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:36,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:36,200 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:36,201 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:36,201 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2049260022] [2022-07-23 05:25:36,201 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2049260022] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:36,202 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:36,202 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:36,205 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1468315768] [2022-07-23 05:25:36,206 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:36,210 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-07-23 05:25:36,211 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:36,238 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-07-23 05:25:36,240 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:25:36,243 INFO L87 Difference]: Start difference. First operand has 149 states, 79 states have (on average 2.1772151898734178) internal successors, (172), 147 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Second operand has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:36,276 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:36,276 INFO L93 Difference]: Finished difference Result 147 states and 159 transitions. [2022-07-23 05:25:36,277 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-07-23 05:25:36,278 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 5 [2022-07-23 05:25:36,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:36,289 INFO L225 Difference]: With dead ends: 147 [2022-07-23 05:25:36,290 INFO L226 Difference]: Without dead ends: 145 [2022-07-23 05:25:36,291 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-07-23 05:25:36,295 INFO L413 NwaCegarLoop]: 159 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 159 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:36,296 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 159 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:25:36,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 145 states. [2022-07-23 05:25:36,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 145 to 145. [2022-07-23 05:25:36,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 145 states, 77 states have (on average 2.0) internal successors, (154), 143 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:36,349 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 145 states to 145 states and 157 transitions. [2022-07-23 05:25:36,350 INFO L78 Accepts]: Start accepts. Automaton has 145 states and 157 transitions. Word has length 5 [2022-07-23 05:25:36,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:36,351 INFO L495 AbstractCegarLoop]: Abstraction has 145 states and 157 transitions. [2022-07-23 05:25:36,352 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 2.5) internal successors, (5), 2 states have internal predecessors, (5), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:36,352 INFO L276 IsEmpty]: Start isEmpty. Operand 145 states and 157 transitions. [2022-07-23 05:25:36,352 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 05:25:36,353 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:36,353 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 05:25:36,353 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-23 05:25:36,353 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:36,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:36,355 INFO L85 PathProgramCache]: Analyzing trace with hash 978320648, now seen corresponding path program 1 times [2022-07-23 05:25:36,355 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:36,355 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904108840] [2022-07-23 05:25:36,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:36,356 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:36,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:36,424 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:36,425 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:36,426 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904108840] [2022-07-23 05:25:36,426 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904108840] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:36,426 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:36,426 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:36,427 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [958939936] [2022-07-23 05:25:36,427 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:36,428 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:36,428 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:36,429 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:36,429 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:36,429 INFO L87 Difference]: Start difference. First operand 145 states and 157 transitions. Second operand has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 05:25:36,531 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:36,532 INFO L93 Difference]: Finished difference Result 149 states and 162 transitions. [2022-07-23 05:25:36,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:36,532 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-23 05:25:36,532 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:36,536 INFO L225 Difference]: With dead ends: 149 [2022-07-23 05:25:36,536 INFO L226 Difference]: Without dead ends: 149 [2022-07-23 05:25:36,540 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:36,541 INFO L413 NwaCegarLoop]: 155 mSDtfsCounter, 89 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 89 SdHoareTripleChecker+Valid, 183 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:36,542 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [89 Valid, 183 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:36,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2022-07-23 05:25:36,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2022-07-23 05:25:36,556 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 149 states, 81 states have (on average 1.962962962962963) internal successors, (159), 147 states have internal predecessors, (159), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:36,559 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 162 transitions. [2022-07-23 05:25:36,559 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 162 transitions. Word has length 6 [2022-07-23 05:25:36,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:36,560 INFO L495 AbstractCegarLoop]: Abstraction has 149 states and 162 transitions. [2022-07-23 05:25:36,561 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 2.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 05:25:36,562 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 162 transitions. [2022-07-23 05:25:36,562 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 05:25:36,562 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:36,563 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 05:25:36,563 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2022-07-23 05:25:36,564 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:36,564 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:36,568 INFO L85 PathProgramCache]: Analyzing trace with hash 978321707, now seen corresponding path program 1 times [2022-07-23 05:25:36,568 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:36,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2058451207] [2022-07-23 05:25:36,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:36,570 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:36,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:36,613 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:36,613 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:36,613 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2058451207] [2022-07-23 05:25:36,614 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2058451207] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:36,619 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:36,620 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:36,620 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [537105961] [2022-07-23 05:25:36,620 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:36,620 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:36,621 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:36,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:36,621 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:36,622 INFO L87 Difference]: Start difference. First operand 149 states and 162 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 05:25:36,780 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:36,780 INFO L93 Difference]: Finished difference Result 224 states and 247 transitions. [2022-07-23 05:25:36,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:36,781 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-23 05:25:36,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:36,782 INFO L225 Difference]: With dead ends: 224 [2022-07-23 05:25:36,782 INFO L226 Difference]: Without dead ends: 224 [2022-07-23 05:25:36,784 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 [2022-07-23 05:25:36,789 INFO L413 NwaCegarLoop]: 173 mSDtfsCounter, 133 mSDsluCounter, 62 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 133 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 125 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:36,790 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [133 Valid, 235 Invalid, 125 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:36,791 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2022-07-23 05:25:36,805 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 142. [2022-07-23 05:25:36,806 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 142 states, 83 states have (on average 1.855421686746988) internal successors, (154), 140 states have internal predecessors, (154), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:36,806 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 142 states to 142 states and 157 transitions. [2022-07-23 05:25:36,806 INFO L78 Accepts]: Start accepts. Automaton has 142 states and 157 transitions. Word has length 6 [2022-07-23 05:25:36,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:36,807 INFO L495 AbstractCegarLoop]: Abstraction has 142 states and 157 transitions. [2022-07-23 05:25:36,807 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 05:25:36,807 INFO L276 IsEmpty]: Start isEmpty. Operand 142 states and 157 transitions. [2022-07-23 05:25:36,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2022-07-23 05:25:36,807 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:36,807 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2022-07-23 05:25:36,808 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2022-07-23 05:25:36,808 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:36,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:36,808 INFO L85 PathProgramCache]: Analyzing trace with hash 978321708, now seen corresponding path program 1 times [2022-07-23 05:25:36,809 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:36,809 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1918603612] [2022-07-23 05:25:36,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:36,809 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:36,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:36,844 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:36,844 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:36,844 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1918603612] [2022-07-23 05:25:36,844 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1918603612] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:36,844 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:36,844 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:36,845 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [304013885] [2022-07-23 05:25:36,845 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:36,845 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:36,845 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:36,846 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:36,846 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:36,846 INFO L87 Difference]: Start difference. First operand 142 states and 157 transitions. Second operand has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 05:25:36,980 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:36,981 INFO L93 Difference]: Finished difference Result 244 states and 267 transitions. [2022-07-23 05:25:36,981 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:36,981 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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 6 [2022-07-23 05:25:36,982 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:36,983 INFO L225 Difference]: With dead ends: 244 [2022-07-23 05:25:36,983 INFO L226 Difference]: Without dead ends: 244 [2022-07-23 05:25:36,983 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 [2022-07-23 05:25:36,984 INFO L413 NwaCegarLoop]: 187 mSDtfsCounter, 127 mSDsluCounter, 78 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 265 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:36,984 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 265 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 107 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:36,985 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 244 states. [2022-07-23 05:25:36,988 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 244 to 153. [2022-07-23 05:25:36,989 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 98 states have (on average 1.7551020408163265) internal successors, (172), 151 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:36,990 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 175 transitions. [2022-07-23 05:25:36,990 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 175 transitions. Word has length 6 [2022-07-23 05:25:36,990 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:36,990 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 175 transitions. [2022-07-23 05:25:36,991 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.0) internal successors, (6), 3 states have internal predecessors, (6), 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) [2022-07-23 05:25:36,991 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 175 transitions. [2022-07-23 05:25:36,991 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-23 05:25:36,991 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:36,992 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:36,992 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2022-07-23 05:25:36,992 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:36,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:36,993 INFO L85 PathProgramCache]: Analyzing trace with hash -466102223, now seen corresponding path program 1 times [2022-07-23 05:25:36,993 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:36,993 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [108033979] [2022-07-23 05:25:36,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:36,994 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:37,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:37,047 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:37,047 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:37,047 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [108033979] [2022-07-23 05:25:37,047 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [108033979] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:37,048 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:37,048 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:37,048 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1557054889] [2022-07-23 05:25:37,048 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:37,049 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:37,049 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:37,049 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:37,049 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:37,050 INFO L87 Difference]: Start difference. First operand 153 states and 175 transitions. Second operand has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-23 05:25:37,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:37,068 INFO L93 Difference]: Finished difference Result 242 states and 273 transitions. [2022-07-23 05:25:37,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:37,069 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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 [2022-07-23 05:25:37,069 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:37,070 INFO L225 Difference]: With dead ends: 242 [2022-07-23 05:25:37,070 INFO L226 Difference]: Without dead ends: 242 [2022-07-23 05:25:37,070 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:37,071 INFO L413 NwaCegarLoop]: 141 mSDtfsCounter, 93 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 276 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:37,072 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 276 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:25:37,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2022-07-23 05:25:37,076 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 157. [2022-07-23 05:25:37,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 157 states, 102 states have (on average 1.7254901960784315) internal successors, (176), 155 states have internal predecessors, (176), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,078 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 179 transitions. [2022-07-23 05:25:37,080 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 179 transitions. Word has length 9 [2022-07-23 05:25:37,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:37,081 INFO L495 AbstractCegarLoop]: Abstraction has 157 states and 179 transitions. [2022-07-23 05:25:37,081 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 3.0) internal successors, (9), 3 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) [2022-07-23 05:25:37,081 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 179 transitions. [2022-07-23 05:25:37,082 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-23 05:25:37,082 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:37,082 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:37,082 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2022-07-23 05:25:37,086 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:37,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:37,087 INFO L85 PathProgramCache]: Analyzing trace with hash 1908517563, now seen corresponding path program 1 times [2022-07-23 05:25:37,087 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:37,088 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1969049813] [2022-07-23 05:25:37,088 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:37,088 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:37,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:37,126 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:37,126 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1969049813] [2022-07-23 05:25:37,127 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1969049813] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:37,127 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:37,127 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-23 05:25:37,128 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [545255384] [2022-07-23 05:25:37,128 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:37,128 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:37,128 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:37,129 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:37,129 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:37,129 INFO L87 Difference]: Start difference. First operand 157 states and 179 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:37,219 INFO L93 Difference]: Finished difference Result 237 states and 268 transitions. [2022-07-23 05:25:37,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:37,219 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 10 [2022-07-23 05:25:37,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:37,220 INFO L225 Difference]: With dead ends: 237 [2022-07-23 05:25:37,220 INFO L226 Difference]: Without dead ends: 236 [2022-07-23 05:25:37,221 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 [2022-07-23 05:25:37,221 INFO L413 NwaCegarLoop]: 113 mSDtfsCounter, 79 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 198 SdHoareTripleChecker+Invalid, 89 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:37,222 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [79 Valid, 198 Invalid, 89 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:37,223 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 236 states. [2022-07-23 05:25:37,225 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 236 to 161. [2022-07-23 05:25:37,225 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 106 states have (on average 1.6981132075471699) internal successors, (180), 159 states have internal predecessors, (180), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,226 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 183 transitions. [2022-07-23 05:25:37,226 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 183 transitions. Word has length 10 [2022-07-23 05:25:37,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:37,226 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 183 transitions. [2022-07-23 05:25:37,227 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,227 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 183 transitions. [2022-07-23 05:25:37,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-07-23 05:25:37,227 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:37,228 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:37,228 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2022-07-23 05:25:37,228 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting failErr0ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:37,229 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:37,229 INFO L85 PathProgramCache]: Analyzing trace with hash 134253526, now seen corresponding path program 1 times [2022-07-23 05:25:37,229 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:37,229 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [184695453] [2022-07-23 05:25:37,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:37,230 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:37,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:37,290 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:37,290 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:37,290 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [184695453] [2022-07-23 05:25:37,291 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [184695453] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:37,291 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:37,291 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-07-23 05:25:37,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [4565432] [2022-07-23 05:25:37,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:37,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:25:37,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:37,292 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:25:37,292 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:25:37,293 INFO L87 Difference]: Start difference. First operand 161 states and 183 transitions. Second operand has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:37,332 INFO L93 Difference]: Finished difference Result 166 states and 186 transitions. [2022-07-23 05:25:37,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:25:37,333 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 12 [2022-07-23 05:25:37,333 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:37,334 INFO L225 Difference]: With dead ends: 166 [2022-07-23 05:25:37,334 INFO L226 Difference]: Without dead ends: 161 [2022-07-23 05:25:37,335 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:37,335 INFO L413 NwaCegarLoop]: 140 mSDtfsCounter, 11 mSDsluCounter, 410 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 550 SdHoareTripleChecker+Invalid, 25 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:37,336 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [11 Valid, 550 Invalid, 25 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:25:37,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 161 states. [2022-07-23 05:25:37,338 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 161 to 156. [2022-07-23 05:25:37,339 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 156 states, 101 states have (on average 1.7227722772277227) internal successors, (174), 154 states have internal predecessors, (174), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,339 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 177 transitions. [2022-07-23 05:25:37,340 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 177 transitions. Word has length 12 [2022-07-23 05:25:37,340 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:37,340 INFO L495 AbstractCegarLoop]: Abstraction has 156 states and 177 transitions. [2022-07-23 05:25:37,340 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,340 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 177 transitions. [2022-07-23 05:25:37,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 05:25:37,341 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:37,341 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:37,342 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2022-07-23 05:25:37,342 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:37,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:37,342 INFO L85 PathProgramCache]: Analyzing trace with hash 570713568, now seen corresponding path program 1 times [2022-07-23 05:25:37,343 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:37,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2091625661] [2022-07-23 05:25:37,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:37,343 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:37,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:37,467 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:37,468 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:37,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2091625661] [2022-07-23 05:25:37,468 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2091625661] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:25:37,468 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1636073941] [2022-07-23 05:25:37,468 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:37,469 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:25:37,469 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:25:37,471 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) [2022-07-23 05:25:37,472 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2022-07-23 05:25:37,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:37,559 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 05:25:37,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:37,620 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 [2022-07-23 05:25:37,659 INFO L356 Elim1Store]: treesize reduction 18, result has 35.7 percent of original size [2022-07-23 05:25:37,659 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 17 treesize of output 21 [2022-07-23 05:25:37,671 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:37,671 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:25:37,773 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:37,773 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1636073941] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:25:37,774 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 05:25:37,774 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 4] total 6 [2022-07-23 05:25:37,774 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [112355030] [2022-07-23 05:25:37,774 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 05:25:37,774 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 05:25:37,774 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:37,775 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 05:25:37,775 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2022-07-23 05:25:37,775 INFO L87 Difference]: Start difference. First operand 156 states and 177 transitions. Second operand has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-07-23 05:25:37,932 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:37,932 INFO L93 Difference]: Finished difference Result 278 states and 310 transitions. [2022-07-23 05:25:37,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-23 05:25:37,933 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-23 05:25:37,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:37,935 INFO L225 Difference]: With dead ends: 278 [2022-07-23 05:25:37,935 INFO L226 Difference]: Without dead ends: 278 [2022-07-23 05:25:37,936 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:25:37,936 INFO L413 NwaCegarLoop]: 84 mSDtfsCounter, 403 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 403 SdHoareTripleChecker+Valid, 261 SdHoareTripleChecker+Invalid, 268 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 111 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:37,937 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [403 Valid, 261 Invalid, 268 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 153 Invalid, 0 Unknown, 111 Unchecked, 0.1s Time] [2022-07-23 05:25:37,937 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 278 states. [2022-07-23 05:25:37,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 278 to 155. [2022-07-23 05:25:37,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 155 states, 101 states have (on average 1.7128712871287128) internal successors, (173), 153 states have internal predecessors, (173), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:37,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 155 states to 155 states and 176 transitions. [2022-07-23 05:25:37,941 INFO L78 Accepts]: Start accepts. Automaton has 155 states and 176 transitions. Word has length 18 [2022-07-23 05:25:37,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:37,941 INFO L495 AbstractCegarLoop]: Abstraction has 155 states and 176 transitions. [2022-07-23 05:25:37,942 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 5.666666666666667) internal successors, (34), 7 states have internal predecessors, (34), 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) [2022-07-23 05:25:37,942 INFO L276 IsEmpty]: Start isEmpty. Operand 155 states and 176 transitions. [2022-07-23 05:25:37,942 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-07-23 05:25:37,942 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:37,943 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:37,966 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2022-07-23 05:25:38,161 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:25:38,162 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:38,162 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:38,163 INFO L85 PathProgramCache]: Analyzing trace with hash 570713569, now seen corresponding path program 1 times [2022-07-23 05:25:38,163 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:38,163 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [904798997] [2022-07-23 05:25:38,163 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:38,163 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:38,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:38,252 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:38,253 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [904798997] [2022-07-23 05:25:38,253 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [904798997] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:25:38,253 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1455704461] [2022-07-23 05:25:38,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:38,253 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:25:38,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:25:38,255 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) [2022-07-23 05:25:38,256 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2022-07-23 05:25:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:38,332 INFO L263 TraceCheckSpWp]: Trace formula consists of 156 conjuncts, 14 conjunts are in the unsatisfiable core [2022-07-23 05:25:38,334 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:38,342 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 [2022-07-23 05:25:38,418 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:38,419 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-23 05:25:38,426 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 05:25:38,427 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 [2022-07-23 05:25:38,447 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:38,448 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:25:38,612 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 50 treesize of output 46 [2022-07-23 05:25:38,679 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:38,679 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1455704461] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 05:25:38,679 INFO L184 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2022-07-23 05:25:38,679 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 10 [2022-07-23 05:25:38,679 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493030250] [2022-07-23 05:25:38,680 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2022-07-23 05:25:38,680 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-07-23 05:25:38,680 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:38,681 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-07-23 05:25:38,681 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2022-07-23 05:25:38,682 INFO L87 Difference]: Start difference. First operand 155 states and 176 transitions. Second operand has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 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) [2022-07-23 05:25:38,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:38,962 INFO L93 Difference]: Finished difference Result 327 states and 353 transitions. [2022-07-23 05:25:38,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 05:25:38,963 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2022-07-23 05:25:38,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:38,965 INFO L225 Difference]: With dead ends: 327 [2022-07-23 05:25:38,965 INFO L226 Difference]: Without dead ends: 327 [2022-07-23 05:25:38,965 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 30 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2022-07-23 05:25:38,966 INFO L413 NwaCegarLoop]: 62 mSDtfsCounter, 820 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 820 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 467 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 201 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:38,966 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [820 Valid, 233 Invalid, 467 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 249 Invalid, 0 Unknown, 201 Unchecked, 0.2s Time] [2022-07-23 05:25:38,967 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 327 states. [2022-07-23 05:25:38,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 327 to 154. [2022-07-23 05:25:38,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 154 states, 101 states have (on average 1.702970297029703) internal successors, (172), 152 states have internal predecessors, (172), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:38,970 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 154 states to 154 states and 175 transitions. [2022-07-23 05:25:38,970 INFO L78 Accepts]: Start accepts. Automaton has 154 states and 175 transitions. Word has length 18 [2022-07-23 05:25:38,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:38,971 INFO L495 AbstractCegarLoop]: Abstraction has 154 states and 175 transitions. [2022-07-23 05:25:38,971 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 4.0) internal successors, (40), 11 states have internal predecessors, (40), 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) [2022-07-23 05:25:38,971 INFO L276 IsEmpty]: Start isEmpty. Operand 154 states and 175 transitions. [2022-07-23 05:25:38,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 05:25:38,972 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:38,972 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:38,994 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2022-07-23 05:25:39,191 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,SelfDestructingSolverStorable8 [2022-07-23 05:25:39,192 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr63ASSERT_VIOLATIONMEMORY_LEAK === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:39,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:39,192 INFO L85 PathProgramCache]: Analyzing trace with hash -309931284, now seen corresponding path program 1 times [2022-07-23 05:25:39,192 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:39,193 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1990272653] [2022-07-23 05:25:39,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:39,193 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:39,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:39,248 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:39,249 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:39,249 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1990272653] [2022-07-23 05:25:39,249 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1990272653] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:39,249 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:39,250 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-07-23 05:25:39,250 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723756859] [2022-07-23 05:25:39,250 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:39,250 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-23 05:25:39,250 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:39,251 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-23 05:25:39,251 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:39,251 INFO L87 Difference]: Start difference. First operand 154 states and 175 transitions. Second operand has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2022-07-23 05:25:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:39,283 INFO L93 Difference]: Finished difference Result 162 states and 173 transitions. [2022-07-23 05:25:39,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-23 05:25:39,283 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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 [2022-07-23 05:25:39,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:39,284 INFO L225 Difference]: With dead ends: 162 [2022-07-23 05:25:39,284 INFO L226 Difference]: Without dead ends: 162 [2022-07-23 05:25:39,284 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-23 05:25:39,285 INFO L413 NwaCegarLoop]: 126 mSDtfsCounter, 29 mSDsluCounter, 109 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 235 SdHoareTripleChecker+Invalid, 37 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:39,285 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 235 Invalid, 37 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-23 05:25:39,286 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 162 states. [2022-07-23 05:25:39,287 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 162 to 153. [2022-07-23 05:25:39,288 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 153 states, 100 states have (on average 1.69) internal successors, (169), 151 states have internal predecessors, (169), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 153 states to 153 states and 172 transitions. [2022-07-23 05:25:39,288 INFO L78 Accepts]: Start accepts. Automaton has 153 states and 172 transitions. Word has length 19 [2022-07-23 05:25:39,288 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:39,288 INFO L495 AbstractCegarLoop]: Abstraction has 153 states and 172 transitions. [2022-07-23 05:25:39,289 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 6.333333333333333) internal successors, (19), 3 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) [2022-07-23 05:25:39,289 INFO L276 IsEmpty]: Start isEmpty. Operand 153 states and 172 transitions. [2022-07-23 05:25:39,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-23 05:25:39,289 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:39,289 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:39,289 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2022-07-23 05:25:39,290 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:39,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:39,290 INFO L85 PathProgramCache]: Analyzing trace with hash 145073858, now seen corresponding path program 1 times [2022-07-23 05:25:39,290 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:39,290 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [279023567] [2022-07-23 05:25:39,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:39,290 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:39,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:39,324 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 05:25:39,325 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:39,325 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [279023567] [2022-07-23 05:25:39,325 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [279023567] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:39,325 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:39,325 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:25:39,325 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688014890] [2022-07-23 05:25:39,325 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:39,326 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:25:39,326 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:39,326 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:25:39,326 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:25:39,326 INFO L87 Difference]: Start difference. First operand 153 states and 172 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:39,437 INFO L93 Difference]: Finished difference Result 152 states and 170 transitions. [2022-07-23 05:25:39,437 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:25:39,438 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-23 05:25:39,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:39,439 INFO L225 Difference]: With dead ends: 152 [2022-07-23 05:25:39,439 INFO L226 Difference]: Without dead ends: 152 [2022-07-23 05:25:39,439 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 [2022-07-23 05:25:39,440 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 7 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 7 SdHoareTripleChecker+Valid, 368 SdHoareTripleChecker+Invalid, 180 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:39,440 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [7 Valid, 368 Invalid, 180 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:39,441 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-23 05:25:39,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 152. [2022-07-23 05:25:39,443 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 152 states, 100 states have (on average 1.67) internal successors, (167), 150 states have internal predecessors, (167), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 152 states to 152 states and 170 transitions. [2022-07-23 05:25:39,443 INFO L78 Accepts]: Start accepts. Automaton has 152 states and 170 transitions. Word has length 21 [2022-07-23 05:25:39,444 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:39,444 INFO L495 AbstractCegarLoop]: Abstraction has 152 states and 170 transitions. [2022-07-23 05:25:39,444 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,444 INFO L276 IsEmpty]: Start isEmpty. Operand 152 states and 170 transitions. [2022-07-23 05:25:39,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2022-07-23 05:25:39,445 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:39,445 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:39,445 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2022-07-23 05:25:39,445 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:39,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:39,446 INFO L85 PathProgramCache]: Analyzing trace with hash 145073859, now seen corresponding path program 1 times [2022-07-23 05:25:39,446 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:39,446 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2065990724] [2022-07-23 05:25:39,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:39,446 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:39,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:39,493 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2022-07-23 05:25:39,494 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:39,494 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2065990724] [2022-07-23 05:25:39,494 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2065990724] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:39,494 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:39,494 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-23 05:25:39,495 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2057217161] [2022-07-23 05:25:39,495 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:39,495 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-23 05:25:39,495 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:39,496 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-23 05:25:39,496 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-23 05:25:39,496 INFO L87 Difference]: Start difference. First operand 152 states and 170 transitions. Second operand has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:39,620 INFO L93 Difference]: Finished difference Result 151 states and 168 transitions. [2022-07-23 05:25:39,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 05:25:39,621 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 21 [2022-07-23 05:25:39,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:39,621 INFO L225 Difference]: With dead ends: 151 [2022-07-23 05:25:39,621 INFO L226 Difference]: Without dead ends: 151 [2022-07-23 05:25:39,622 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 [2022-07-23 05:25:39,622 INFO L413 NwaCegarLoop]: 133 mSDtfsCounter, 5 mSDsluCounter, 248 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 165 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:39,622 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 381 Invalid, 165 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 05:25:39,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-23 05:25:39,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-23 05:25:39,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.65) internal successors, (165), 149 states have internal predecessors, (165), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,626 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 168 transitions. [2022-07-23 05:25:39,626 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 168 transitions. Word has length 21 [2022-07-23 05:25:39,626 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:39,626 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 168 transitions. [2022-07-23 05:25:39,626 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 5.0) internal successors, (20), 5 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,626 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 168 transitions. [2022-07-23 05:25:39,627 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-23 05:25:39,627 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:39,627 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:39,627 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2022-07-23 05:25:39,627 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:39,627 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:39,627 INFO L85 PathProgramCache]: Analyzing trace with hash 1158251601, now seen corresponding path program 1 times [2022-07-23 05:25:39,628 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:39,628 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [980981013] [2022-07-23 05:25:39,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:39,628 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:39,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:39,698 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:39,698 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:39,698 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [980981013] [2022-07-23 05:25:39,698 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [980981013] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:39,698 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:39,698 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 05:25:39,699 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125191738] [2022-07-23 05:25:39,699 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:39,699 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:25:39,699 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:39,699 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:25:39,700 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:25:39,700 INFO L87 Difference]: Start difference. First operand 151 states and 168 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,919 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:39,919 INFO L93 Difference]: Finished difference Result 152 states and 167 transitions. [2022-07-23 05:25:39,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 05:25:39,920 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-23 05:25:39,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:39,920 INFO L225 Difference]: With dead ends: 152 [2022-07-23 05:25:39,920 INFO L226 Difference]: Without dead ends: 152 [2022-07-23 05:25:39,921 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-07-23 05:25:39,921 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 47 mSDsluCounter, 283 mSDsCounter, 0 mSdLazyCounter, 274 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 47 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 284 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 274 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:39,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [47 Valid, 394 Invalid, 284 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 274 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:39,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-23 05:25:39,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-07-23 05:25:39,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.64) internal successors, (164), 149 states have internal predecessors, (164), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,924 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 167 transitions. [2022-07-23 05:25:39,924 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 167 transitions. Word has length 24 [2022-07-23 05:25:39,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:39,925 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 167 transitions. [2022-07-23 05:25:39,925 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:39,925 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 167 transitions. [2022-07-23 05:25:39,925 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2022-07-23 05:25:39,925 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:39,926 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:39,926 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2022-07-23 05:25:39,926 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:39,926 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:39,926 INFO L85 PathProgramCache]: Analyzing trace with hash 1158251602, now seen corresponding path program 1 times [2022-07-23 05:25:39,926 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:39,926 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1907595230] [2022-07-23 05:25:39,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:39,927 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:39,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:40,058 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:40,059 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:40,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1907595230] [2022-07-23 05:25:40,059 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1907595230] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:40,059 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:40,059 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-07-23 05:25:40,061 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516721293] [2022-07-23 05:25:40,061 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:40,062 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-07-23 05:25:40,062 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:40,063 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-07-23 05:25:40,063 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-07-23 05:25:40,063 INFO L87 Difference]: Start difference. First operand 151 states and 167 transitions. Second operand has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:40,349 INFO L93 Difference]: Finished difference Result 151 states and 166 transitions. [2022-07-23 05:25:40,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 05:25:40,349 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 24 [2022-07-23 05:25:40,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:40,350 INFO L225 Difference]: With dead ends: 151 [2022-07-23 05:25:40,350 INFO L226 Difference]: Without dead ends: 151 [2022-07-23 05:25:40,350 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=131, Unknown=0, NotChecked=0, Total=182 [2022-07-23 05:25:40,351 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 42 mSDsluCounter, 451 mSDsCounter, 0 mSdLazyCounter, 382 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 563 SdHoareTripleChecker+Invalid, 391 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 382 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:40,351 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 563 Invalid, 391 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 382 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:40,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-23 05:25:40,353 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-23 05:25:40,353 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.63) internal successors, (163), 149 states have internal predecessors, (163), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 166 transitions. [2022-07-23 05:25:40,354 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 166 transitions. Word has length 24 [2022-07-23 05:25:40,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:40,354 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 166 transitions. [2022-07-23 05:25:40,354 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.4285714285714284) internal successors, (24), 8 states have internal predecessors, (24), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,354 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 166 transitions. [2022-07-23 05:25:40,355 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 05:25:40,355 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:40,355 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:40,357 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2022-07-23 05:25:40,357 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:40,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:40,358 INFO L85 PathProgramCache]: Analyzing trace with hash -293756023, now seen corresponding path program 1 times [2022-07-23 05:25:40,358 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:40,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1862632122] [2022-07-23 05:25:40,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:40,359 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:40,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:40,469 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:40,469 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:40,469 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1862632122] [2022-07-23 05:25:40,469 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1862632122] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:40,470 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:40,470 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 05:25:40,470 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010677807] [2022-07-23 05:25:40,470 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:40,470 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 05:25:40,470 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:40,470 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 05:25:40,471 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:25:40,471 INFO L87 Difference]: Start difference. First operand 151 states and 166 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,745 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:40,746 INFO L93 Difference]: Finished difference Result 152 states and 165 transitions. [2022-07-23 05:25:40,746 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:25:40,746 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-23 05:25:40,746 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:40,747 INFO L225 Difference]: With dead ends: 152 [2022-07-23 05:25:40,747 INFO L226 Difference]: Without dead ends: 152 [2022-07-23 05:25:40,747 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-07-23 05:25:40,748 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 48 mSDsluCounter, 429 mSDsCounter, 0 mSdLazyCounter, 413 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 540 SdHoareTripleChecker+Invalid, 425 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 413 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:40,748 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 540 Invalid, 425 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 413 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:40,748 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2022-07-23 05:25:40,755 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 151. [2022-07-23 05:25:40,756 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.62) internal successors, (162), 149 states have internal predecessors, (162), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 165 transitions. [2022-07-23 05:25:40,757 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 165 transitions. Word has length 27 [2022-07-23 05:25:40,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:40,757 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 165 transitions. [2022-07-23 05:25:40,757 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:40,757 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 165 transitions. [2022-07-23 05:25:40,758 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-07-23 05:25:40,758 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:40,758 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:40,758 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2022-07-23 05:25:40,758 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:40,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:40,759 INFO L85 PathProgramCache]: Analyzing trace with hash -293756022, now seen corresponding path program 1 times [2022-07-23 05:25:40,759 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:40,759 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [183808906] [2022-07-23 05:25:40,759 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:40,759 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:40,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:40,886 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:40,886 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:40,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [183808906] [2022-07-23 05:25:40,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [183808906] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:40,886 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:40,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-07-23 05:25:40,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2125699779] [2022-07-23 05:25:40,887 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:40,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 05:25:40,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:40,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 05:25:40,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-07-23 05:25:40,888 INFO L87 Difference]: Start difference. First operand 151 states and 165 transitions. Second operand has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:41,204 INFO L93 Difference]: Finished difference Result 151 states and 164 transitions. [2022-07-23 05:25:41,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-07-23 05:25:41,204 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 27 [2022-07-23 05:25:41,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:41,205 INFO L225 Difference]: With dead ends: 151 [2022-07-23 05:25:41,205 INFO L226 Difference]: Without dead ends: 151 [2022-07-23 05:25:41,205 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2022-07-23 05:25:41,206 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 46 mSDsluCounter, 453 mSDsCounter, 0 mSdLazyCounter, 388 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 565 SdHoareTripleChecker+Invalid, 399 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 388 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:41,206 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [46 Valid, 565 Invalid, 399 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 388 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:41,207 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-23 05:25:41,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-23 05:25:41,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.61) internal successors, (161), 149 states have internal predecessors, (161), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,209 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 164 transitions. [2022-07-23 05:25:41,209 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 164 transitions. Word has length 27 [2022-07-23 05:25:41,209 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:41,210 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 164 transitions. [2022-07-23 05:25:41,210 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.375) internal successors, (27), 9 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,210 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 164 transitions. [2022-07-23 05:25:41,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 05:25:41,210 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:41,210 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:41,211 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2022-07-23 05:25:41,211 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr26REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:41,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:41,211 INFO L85 PathProgramCache]: Analyzing trace with hash 1857729656, now seen corresponding path program 1 times [2022-07-23 05:25:41,211 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:41,211 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1114093383] [2022-07-23 05:25:41,211 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:41,212 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:41,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:41,331 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:41,332 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:41,332 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1114093383] [2022-07-23 05:25:41,332 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1114093383] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:41,332 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:41,332 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 05:25:41,332 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741862251] [2022-07-23 05:25:41,333 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:41,333 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 05:25:41,334 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:41,334 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 05:25:41,334 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-23 05:25:41,334 INFO L87 Difference]: Start difference. First operand 151 states and 164 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-07-23 05:25:41,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:41,593 INFO L93 Difference]: Finished difference Result 153 states and 164 transitions. [2022-07-23 05:25:41,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-07-23 05:25:41,593 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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 30 [2022-07-23 05:25:41,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:41,594 INFO L225 Difference]: With dead ends: 153 [2022-07-23 05:25:41,594 INFO L226 Difference]: Without dead ends: 153 [2022-07-23 05:25:41,594 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=289, Unknown=0, NotChecked=0, Total=380 [2022-07-23 05:25:41,595 INFO L413 NwaCegarLoop]: 111 mSDtfsCounter, 61 mSDsluCounter, 293 mSDsCounter, 0 mSdLazyCounter, 300 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 61 SdHoareTripleChecker+Valid, 404 SdHoareTripleChecker+Invalid, 317 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 300 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:41,595 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [61 Valid, 404 Invalid, 317 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 300 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:41,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2022-07-23 05:25:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 151. [2022-07-23 05:25:41,598 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.6) internal successors, (160), 149 states have internal predecessors, (160), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 163 transitions. [2022-07-23 05:25:41,598 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 163 transitions. Word has length 30 [2022-07-23 05:25:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:41,599 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 163 transitions. [2022-07-23 05:25:41,599 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-07-23 05:25:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 163 transitions. [2022-07-23 05:25:41,599 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2022-07-23 05:25:41,599 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:41,599 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:41,600 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2022-07-23 05:25:41,600 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr27REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:41,600 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:41,600 INFO L85 PathProgramCache]: Analyzing trace with hash 1857729657, now seen corresponding path program 1 times [2022-07-23 05:25:41,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:41,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [243020564] [2022-07-23 05:25:41,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:41,600 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:41,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:41,744 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:41,744 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:41,744 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [243020564] [2022-07-23 05:25:41,744 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [243020564] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 05:25:41,744 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 05:25:41,744 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-07-23 05:25:41,744 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [250617178] [2022-07-23 05:25:41,744 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 05:25:41,745 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-07-23 05:25:41,745 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2022-07-23 05:25:41,745 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-07-23 05:25:41,745 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-23 05:25:41,745 INFO L87 Difference]: Start difference. First operand 151 states and 163 transitions. Second operand has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-07-23 05:25:42,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 05:25:42,033 INFO L93 Difference]: Finished difference Result 151 states and 162 transitions. [2022-07-23 05:25:42,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-07-23 05:25:42,033 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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 30 [2022-07-23 05:25:42,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 05:25:42,034 INFO L225 Difference]: With dead ends: 151 [2022-07-23 05:25:42,034 INFO L226 Difference]: Without dead ends: 151 [2022-07-23 05:25:42,034 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=73, Invalid=233, Unknown=0, NotChecked=0, Total=306 [2022-07-23 05:25:42,035 INFO L413 NwaCegarLoop]: 112 mSDtfsCounter, 50 mSDsluCounter, 383 mSDsCounter, 0 mSdLazyCounter, 342 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 495 SdHoareTripleChecker+Invalid, 357 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 342 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-07-23 05:25:42,035 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [50 Valid, 495 Invalid, 357 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 342 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-07-23 05:25:42,035 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2022-07-23 05:25:42,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 151. [2022-07-23 05:25:42,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 151 states, 100 states have (on average 1.59) internal successors, (159), 149 states have internal predecessors, (159), 3 states have call successors, (3), 1 states have call predecessors, (3), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2022-07-23 05:25:42,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 151 states to 151 states and 162 transitions. [2022-07-23 05:25:42,038 INFO L78 Accepts]: Start accepts. Automaton has 151 states and 162 transitions. Word has length 30 [2022-07-23 05:25:42,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 05:25:42,038 INFO L495 AbstractCegarLoop]: Abstraction has 151 states and 162 transitions. [2022-07-23 05:25:42,038 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.3333333333333335) internal successors, (30), 10 states have internal predecessors, (30), 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) [2022-07-23 05:25:42,038 INFO L276 IsEmpty]: Start isEmpty. Operand 151 states and 162 transitions. [2022-07-23 05:25:42,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2022-07-23 05:25:42,039 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 05:25:42,039 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 05:25:42,039 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2022-07-23 05:25:42,039 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [failErr0ASSERT_VIOLATIONMEMORY_LEAK, ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 62 more)] === [2022-07-23 05:25:42,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 05:25:42,040 INFO L85 PathProgramCache]: Analyzing trace with hash -1366780878, now seen corresponding path program 1 times [2022-07-23 05:25:42,040 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-23 05:25:42,040 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [6951335] [2022-07-23 05:25:42,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:42,045 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-23 05:25:42,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:42,281 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:42,281 INFO L136 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2022-07-23 05:25:42,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [6951335] [2022-07-23 05:25:42,281 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [6951335] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 05:25:42,281 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1338934654] [2022-07-23 05:25:42,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 05:25:42,281 INFO L173 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2022-07-23 05:25:42,282 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 05:25:42,283 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2022-07-23 05:25:42,284 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2022-07-23 05:25:42,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 05:25:42,390 INFO L263 TraceCheckSpWp]: Trace formula consists of 284 conjuncts, 69 conjunts are in the unsatisfiable core [2022-07-23 05:25:42,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 05:25:42,438 INFO L356 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2022-07-23 05:25:42,439 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 [2022-07-23 05:25:42,499 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 [2022-07-23 05:25:42,502 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 [2022-07-23 05:25:42,561 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-23 05:25:42,562 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-23 05:25:42,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:42,568 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 [2022-07-23 05:25:42,620 INFO L356 Elim1Store]: treesize reduction 27, result has 25.0 percent of original size [2022-07-23 05:25:42,621 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-07-23 05:25:42,630 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:42,631 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 [2022-07-23 05:25:42,679 INFO L356 Elim1Store]: treesize reduction 26, result has 27.8 percent of original size [2022-07-23 05:25:42,679 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 3 select indices, 3 select index equivalence classes, 1 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 26 treesize of output 33 [2022-07-23 05:25:42,762 INFO L356 Elim1Store]: treesize reduction 56, result has 25.3 percent of original size [2022-07-23 05:25:42,763 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 2 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 3 case distinctions, treesize of input 30 treesize of output 32 [2022-07-23 05:25:42,777 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:42,778 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:42,779 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:42,781 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 32 [2022-07-23 05:25:42,937 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:25:42,937 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 55 treesize of output 50 [2022-07-23 05:25:42,943 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-07-23 05:25:43,034 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:43,035 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:43,036 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:43,055 INFO L356 Elim1Store]: treesize reduction 96, result has 21.3 percent of original size [2022-07-23 05:25:43,055 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 3 select indices, 3 select index equivalence classes, 3 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 66 treesize of output 58 [2022-07-23 05:25:43,061 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-07-23 05:25:43,246 INFO L356 Elim1Store]: treesize reduction 23, result has 17.9 percent of original size [2022-07-23 05:25:43,247 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 3 new quantified variables, introduced 2 case distinctions, treesize of input 68 treesize of output 57 [2022-07-23 05:25:43,253 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-07-23 05:25:43,386 INFO L356 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2022-07-23 05:25:43,387 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 64 treesize of output 57 [2022-07-23 05:25:43,392 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 2 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 29 treesize of output 29 [2022-07-23 05:25:43,400 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:25:43,400 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 3 select indices, 3 select index equivalence classes, 2 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 22 [2022-07-23 05:25:43,467 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 05:25:43,468 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 28 treesize of output 10 [2022-07-23 05:25:43,473 INFO L356 Elim1Store]: treesize reduction 32, result has 3.0 percent of original size [2022-07-23 05:25:43,474 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 3 new quantified variables, introduced 3 case distinctions, treesize of input 44 treesize of output 18 [2022-07-23 05:25:43,482 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 05:25:43,482 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 05:25:50,760 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,761 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,762 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,788 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:25:50,788 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 6 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 455 treesize of output 471 [2022-07-23 05:25:50,795 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,796 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,797 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:50,807 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:25:50,808 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 7 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 4 case distinctions, treesize of input 697 treesize of output 252 [2022-07-23 05:25:50,900 INFO L356 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2022-07-23 05:25:50,901 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 3 select indices, 3 select index equivalence classes, 0 disjoint index pairs (out of 3 index pairs), introduced 4 new quantified variables, introduced 3 case distinctions, treesize of input 18935 treesize of output 16585 [2022-07-23 05:25:51,592 INFO L173 IndexEqualityManager]: detected equality via solver [2022-07-23 05:25:51,599 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 2693577 treesize of output 2645661 [2022-07-23 05:25:58,051 WARN L233 SmtUtils]: Spent 6.45s on a formula simplification that was a NOOP. DAG size: 2706 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:26:04,093 WARN L233 SmtUtils]: Spent 6.03s on a formula simplification that was a NOOP. DAG size: 2700 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:26:04,255 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 2645653 treesize of output 2400389 [2022-07-23 05:26:10,177 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 2699 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:26:10,345 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 2400389 treesize of output 2369013 [2022-07-23 05:26:16,267 WARN L233 SmtUtils]: Spent 5.92s on a formula simplification that was a NOOP. DAG size: 2698 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:26:16,416 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 2369013 treesize of output 2307701 [2022-07-23 05:26:22,478 WARN L233 SmtUtils]: Spent 6.06s on a formula simplification that was a NOOP. DAG size: 2697 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:26:22,548 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 2311306 treesize of output 2288354 [2022-07-23 05:26:28,367 WARN L233 SmtUtils]: Spent 5.82s on a formula simplification that was a NOOP. DAG size: 2696 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:26:28,498 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 2513382 treesize of output 2349342 [2022-07-23 05:26:35,048 WARN L233 SmtUtils]: Spent 6.55s on a formula simplification that was a NOOP. DAG size: 2700 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:26:35,175 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 2345328 treesize of output 2224688 [2022-07-23 05:26:41,604 WARN L233 SmtUtils]: Spent 6.43s on a formula simplification that was a NOOP. DAG size: 2699 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:27:46,328 WARN L233 SmtUtils]: Spent 24.61s on a formula simplification. DAG size of input: 1748 DAG size of output: 1748 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:29:00,554 WARN L233 SmtUtils]: Spent 1.16m on a formula simplification. DAG size of input: 1746 DAG size of output: 1746 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:29:25,263 WARN L233 SmtUtils]: Spent 10.05s on a formula simplification that was a NOOP. DAG size: 1714 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify) [2022-07-23 05:29:40,053 WARN L233 SmtUtils]: Spent 9.90s on a formula simplification that was a NOOP. DAG size: 1714 (called from [L 813] de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher.simplify)