./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/getNumbers2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash cf0bb070a6f67963fcaf42c16427fd9b591ad6ca597a21a650e9cf23fa51a6dd --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 22:33:12,358 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 22:33:12,366 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 22:33:12,421 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 22:33:12,421 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 22:33:12,424 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 22:33:12,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 22:33:12,430 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 22:33:12,431 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 22:33:12,435 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 22:33:12,436 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 22:33:12,437 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 22:33:12,437 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 22:33:12,439 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 22:33:12,441 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 22:33:12,448 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 22:33:12,449 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 22:33:12,449 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 22:33:12,452 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 22:33:12,457 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 22:33:12,458 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 22:33:12,459 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 22:33:12,460 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 22:33:12,460 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 22:33:12,466 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 22:33:12,466 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 22:33:12,466 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 22:33:12,468 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 22:33:12,468 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 22:33:12,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 22:33:12,470 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 22:33:12,471 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 22:33:12,472 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 22:33:12,473 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 22:33:12,474 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 22:33:12,474 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 22:33:12,475 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 22:33:12,475 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 22:33:12,475 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 22:33:12,477 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 22:33:12,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 22:33:12,479 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 22:33:12,512 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 22:33:12,512 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 22:33:12,513 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 22:33:12,513 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 22:33:12,514 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 22:33:12,514 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 22:33:12,514 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 22:33:12,515 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 22:33:12,515 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 22:33:12,515 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 22:33:12,515 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 22:33:12,515 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 22:33:12,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 22:33:12,516 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 22:33:12,516 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 22:33:12,516 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 22:33:12,516 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 22:33:12,517 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 22:33:12,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 22:33:12,517 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 22:33:12,517 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 22:33:12,517 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 22:33:12,518 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 22:33:12,518 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 22:33:12,518 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 22:33:12,518 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:33:12,519 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 22:33:12,519 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 22:33:12,519 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 22:33:12,520 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 22:33:12,520 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 22:33:12,520 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cf0bb070a6f67963fcaf42c16427fd9b591ad6ca597a21a650e9cf23fa51a6dd [2021-12-18 22:33:12,768 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 22:33:12,795 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 22:33:12,798 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 22:33:12,799 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 22:33:12,803 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 22:33:12,805 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2021-12-18 22:33:12,876 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c88f3e46/dc3d40314c5f49899447b2d5c5d61db6/FLAGb2f62a14e [2021-12-18 22:33:13,265 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 22:33:13,266 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers2.c [2021-12-18 22:33:13,274 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c88f3e46/dc3d40314c5f49899447b2d5c5d61db6/FLAGb2f62a14e [2021-12-18 22:33:13,683 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8c88f3e46/dc3d40314c5f49899447b2d5c5d61db6 [2021-12-18 22:33:13,686 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 22:33:13,688 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 22:33:13,693 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:13,693 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 22:33:13,696 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 22:33:13,697 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,699 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d4426fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13, skipping insertion in model container [2021-12-18 22:33:13,699 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,706 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 22:33:13,717 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 22:33:13,862 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:13,876 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 22:33:13,887 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:13,897 INFO L208 MainTranslator]: Completed translation [2021-12-18 22:33:13,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13 WrapperNode [2021-12-18 22:33:13,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:13,898 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 22:33:13,898 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 22:33:13,898 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 22:33:13,903 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,908 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,921 INFO L137 Inliner]: procedures = 10, calls = 12, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 46 [2021-12-18 22:33:13,921 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 22:33:13,922 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 22:33:13,922 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 22:33:13,922 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 22:33:13,928 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,928 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,930 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,930 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,937 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,938 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 22:33:13,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 22:33:13,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 22:33:13,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 22:33:13,942 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (1/1) ... [2021-12-18 22:33:13,954 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:33:13,963 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:13,981 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) [2021-12-18 22:33:13,999 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 [2021-12-18 22:33:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 22:33:14,024 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 22:33:14,025 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 22:33:14,025 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 22:33:14,095 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 22:33:14,096 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 22:33:14,197 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 22:33:14,202 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 22:33:14,202 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 22:33:14,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:14 BoogieIcfgContainer [2021-12-18 22:33:14,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 22:33:14,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 22:33:14,205 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 22:33:14,208 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 22:33:14,208 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:33:13" (1/3) ... [2021-12-18 22:33:14,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597a9980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:33:14, skipping insertion in model container [2021-12-18 22:33:14,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:13" (2/3) ... [2021-12-18 22:33:14,209 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@597a9980 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:33:14, skipping insertion in model container [2021-12-18 22:33:14,209 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:14" (3/3) ... [2021-12-18 22:33:14,211 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers2.c [2021-12-18 22:33:14,214 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 22:33:14,215 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 9 error locations. [2021-12-18 22:33:14,248 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 22:33:14,254 INFO L339 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, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 22:33:14,254 INFO L340 AbstractCegarLoop]: Starting to check reachability of 9 error locations. [2021-12-18 22:33:14,277 INFO L276 IsEmpty]: Start isEmpty. Operand has 28 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:14,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-18 22:33:14,285 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:14,286 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-18 22:33:14,286 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:14,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:14,292 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-12-18 22:33:14,302 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:14,303 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [529507814] [2021-12-18 22:33:14,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:14,304 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:14,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:14,446 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:14,446 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:14,447 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [529507814] [2021-12-18 22:33:14,447 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [529507814] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:14,447 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:14,448 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-18 22:33:14,449 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [613977363] [2021-12-18 22:33:14,450 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:14,453 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:14,453 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:14,473 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:14,474 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:14,476 INFO L87 Difference]: Start difference. First operand has 28 states, 18 states have (on average 1.7222222222222223) internal successors, (31), 27 states have internal predecessors, (31), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:14,522 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:14,523 INFO L93 Difference]: Finished difference Result 27 states and 28 transitions. [2021-12-18 22:33:14,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:14,525 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-18 22:33:14,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:14,531 INFO L225 Difference]: With dead ends: 27 [2021-12-18 22:33:14,532 INFO L226 Difference]: Without dead ends: 25 [2021-12-18 22:33:14,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:14,540 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:14,541 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 22 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:14,563 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2021-12-18 22:33:14,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2021-12-18 22:33:14,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 17 states have (on average 1.5294117647058822) internal successors, (26), 24 states have internal predecessors, (26), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:14,575 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 26 transitions. [2021-12-18 22:33:14,576 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 26 transitions. Word has length 4 [2021-12-18 22:33:14,576 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:14,576 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 26 transitions. [2021-12-18 22:33:14,577 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:14,577 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 26 transitions. [2021-12-18 22:33:14,577 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-18 22:33:14,577 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:14,577 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-18 22:33:14,578 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 22:33:14,578 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:14,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:14,581 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-12-18 22:33:14,582 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:14,582 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [74829870] [2021-12-18 22:33:14,582 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:14,583 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:14,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:14,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:14,703 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:14,703 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [74829870] [2021-12-18 22:33:14,703 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [74829870] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:14,703 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:14,703 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:33:14,704 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732130666] [2021-12-18 22:33:14,704 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:14,705 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 22:33:14,705 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:14,705 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 22:33:14,706 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 22:33:14,706 INFO L87 Difference]: Start difference. First operand 25 states and 26 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:14,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:14,739 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2021-12-18 22:33:14,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 22:33:14,739 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-18 22:33:14,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:14,740 INFO L225 Difference]: With dead ends: 28 [2021-12-18 22:33:14,740 INFO L226 Difference]: Without dead ends: 28 [2021-12-18 22:33:14,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-18 22:33:14,742 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 27 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 26 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 29 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 26 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:14,742 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 25 Invalid, 29 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 26 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:14,743 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2021-12-18 22:33:14,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 27. [2021-12-18 22:33:14,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 19 states have (on average 1.4736842105263157) internal successors, (28), 26 states have internal predecessors, (28), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:14,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 28 transitions. [2021-12-18 22:33:14,747 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 28 transitions. Word has length 4 [2021-12-18 22:33:14,747 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:14,747 INFO L470 AbstractCegarLoop]: Abstraction has 27 states and 28 transitions. [2021-12-18 22:33:14,747 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:14,747 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 28 transitions. [2021-12-18 22:33:14,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-18 22:33:14,748 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:14,748 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-12-18 22:33:14,748 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 22:33:14,748 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:14,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:14,749 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2021-12-18 22:33:14,749 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:14,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [444369623] [2021-12-18 22:33:14,750 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:14,750 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:14,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:14,915 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:14,915 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:14,925 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [444369623] [2021-12-18 22:33:14,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [444369623] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:14,926 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [841890186] [2021-12-18 22:33:14,927 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:14,927 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:14,927 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:14,929 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) [2021-12-18 22:33:14,948 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 22:33:14,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:14,970 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 22:33:14,973 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:15,121 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:15,121 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:15,217 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [841890186] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:15,217 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:15,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2021-12-18 22:33:15,218 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [706057976] [2021-12-18 22:33:15,218 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:15,218 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-18 22:33:15,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:15,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-18 22:33:15,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-18 22:33:15,221 INFO L87 Difference]: Start difference. First operand 27 states and 28 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:15,433 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:15,433 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-12-18 22:33:15,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 22:33:15,434 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-18 22:33:15,434 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:15,435 INFO L225 Difference]: With dead ends: 34 [2021-12-18 22:33:15,435 INFO L226 Difference]: Without dead ends: 34 [2021-12-18 22:33:15,435 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-12-18 22:33:15,436 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 92 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 57 mSolverCounterSat, 24 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 92 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 81 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 24 IncrementalHoareTripleChecker+Valid, 57 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:15,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [92 Valid, 35 Invalid, 81 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [24 Valid, 57 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:33:15,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-18 22:33:15,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-18 22:33:15,440 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 27 states have (on average 1.2962962962962963) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:15,440 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-12-18 22:33:15,441 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 7 [2021-12-18 22:33:15,441 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:15,441 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-12-18 22:33:15,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:15,441 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-12-18 22:33:15,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 22:33:15,444 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:15,444 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:15,471 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:15,658 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:15,658 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:15,659 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:15,659 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 1 times [2021-12-18 22:33:15,659 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:15,659 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [267259175] [2021-12-18 22:33:15,659 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:15,660 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:15,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:15,751 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:15,751 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:15,751 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [267259175] [2021-12-18 22:33:15,752 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [267259175] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:15,752 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [46884834] [2021-12-18 22:33:15,752 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:15,752 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:15,752 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:15,753 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) [2021-12-18 22:33:15,755 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 22:33:15,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:15,802 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 22:33:15,805 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:15,858 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:15,941 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:15,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [46884834] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:15,941 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:15,942 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-18 22:33:15,942 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2123132697] [2021-12-18 22:33:15,942 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:15,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 22:33:15,943 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:15,943 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 22:33:15,943 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-18 22:33:15,944 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:15,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:15,993 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-12-18 22:33:15,993 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 22:33:15,994 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 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 [2021-12-18 22:33:15,994 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:15,994 INFO L225 Difference]: With dead ends: 52 [2021-12-18 22:33:15,994 INFO L226 Difference]: Without dead ends: 52 [2021-12-18 22:33:15,995 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-18 22:33:15,996 INFO L933 BasicCegarLoop]: 22 mSDtfsCounter, 30 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 42 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:15,996 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 62 Invalid, 42 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:15,997 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-18 22:33:16,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-18 22:33:16,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 45 states have (on average 1.1777777777777778) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,007 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-12-18 22:33:16,007 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 19 [2021-12-18 22:33:16,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:16,007 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-12-18 22:33:16,008 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,008 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-12-18 22:33:16,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 22:33:16,009 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:16,009 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:16,035 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:16,209 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable3 [2021-12-18 22:33:16,210 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:16,210 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:16,210 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069290, now seen corresponding path program 2 times [2021-12-18 22:33:16,210 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:16,210 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1034817492] [2021-12-18 22:33:16,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:16,210 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:16,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:16,407 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:16,407 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:16,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1034817492] [2021-12-18 22:33:16,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1034817492] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:16,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:16,410 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:33:16,410 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [135922398] [2021-12-18 22:33:16,410 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:16,411 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 22:33:16,411 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:16,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 22:33:16,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:33:16,412 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-18 22:33:16,463 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:16,463 INFO L93 Difference]: Finished difference Result 60 states and 61 transitions. [2021-12-18 22:33:16,464 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 22:33:16,464 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 37 [2021-12-18 22:33:16,465 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:16,465 INFO L225 Difference]: With dead ends: 60 [2021-12-18 22:33:16,466 INFO L226 Difference]: Without dead ends: 60 [2021-12-18 22:33:16,466 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 22:33:16,467 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 55 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:16,468 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [55 Valid, 26 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:16,469 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2021-12-18 22:33:16,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2021-12-18 22:33:16,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 47 states have (on average 1.1914893617021276) internal successors, (56), 53 states have internal predecessors, (56), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2021-12-18 22:33:16,475 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 37 [2021-12-18 22:33:16,475 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:16,475 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2021-12-18 22:33:16,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-18 22:33:16,476 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2021-12-18 22:33:16,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 22:33:16,476 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:16,476 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:16,477 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 22:33:16,477 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:16,477 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:16,477 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 1 times [2021-12-18 22:33:16,477 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:16,477 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1957375708] [2021-12-18 22:33:16,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:16,478 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:16,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:16,574 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:16,574 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:16,575 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1957375708] [2021-12-18 22:33:16,575 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1957375708] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:16,575 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:16,575 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 22:33:16,575 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365087363] [2021-12-18 22:33:16,575 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:16,576 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 22:33:16,576 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:16,576 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 22:33:16,576 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:33:16,577 INFO L87 Difference]: Start difference. First operand 54 states and 56 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-18 22:33:16,613 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:16,613 INFO L93 Difference]: Finished difference Result 53 states and 54 transitions. [2021-12-18 22:33:16,613 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 22:33:16,613 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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 37 [2021-12-18 22:33:16,614 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:16,616 INFO L225 Difference]: With dead ends: 53 [2021-12-18 22:33:16,616 INFO L226 Difference]: Without dead ends: 53 [2021-12-18 22:33:16,616 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 22:33:16,619 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 27 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 28 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 30 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 28 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:16,620 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 30 Invalid, 30 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 28 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:16,621 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-12-18 22:33:16,625 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2021-12-18 22:33:16,625 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 47 states have (on average 1.148936170212766) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,628 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-12-18 22:33:16,628 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 37 [2021-12-18 22:33:16,628 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:16,628 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-12-18 22:33:16,629 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 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) [2021-12-18 22:33:16,629 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-12-18 22:33:16,631 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-18 22:33:16,631 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:16,632 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:16,632 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 22:33:16,632 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:16,632 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:16,632 INFO L85 PathProgramCache]: Analyzing trace with hash -708557702, now seen corresponding path program 1 times [2021-12-18 22:33:16,632 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:16,633 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1940607676] [2021-12-18 22:33:16,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:16,633 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:16,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:16,699 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:16,699 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:16,699 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1940607676] [2021-12-18 22:33:16,699 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1940607676] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:16,699 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:16,700 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:33:16,700 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545955675] [2021-12-18 22:33:16,700 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:16,700 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:16,700 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:16,701 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:16,701 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:16,701 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:16,713 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2021-12-18 22:33:16,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:16,713 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-18 22:33:16,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:16,715 INFO L225 Difference]: With dead ends: 52 [2021-12-18 22:33:16,715 INFO L226 Difference]: Without dead ends: 52 [2021-12-18 22:33:16,715 INFO L932 BasicCegarLoop]: 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 [2021-12-18 22:33:16,716 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 6 mSDsluCounter, 7 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:16,716 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 26 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:16,717 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2021-12-18 22:33:16,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 52. [2021-12-18 22:33:16,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 47 states have (on average 1.127659574468085) internal successors, (53), 51 states have internal predecessors, (53), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 53 transitions. [2021-12-18 22:33:16,721 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 53 transitions. Word has length 38 [2021-12-18 22:33:16,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:16,721 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 53 transitions. [2021-12-18 22:33:16,721 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,721 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 53 transitions. [2021-12-18 22:33:16,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-18 22:33:16,722 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:16,722 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:16,722 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 22:33:16,722 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:16,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:16,723 INFO L85 PathProgramCache]: Analyzing trace with hash -708557701, now seen corresponding path program 1 times [2021-12-18 22:33:16,723 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:16,723 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [968004662] [2021-12-18 22:33:16,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:16,723 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:16,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:16,786 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:16,786 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:16,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [968004662] [2021-12-18 22:33:16,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [968004662] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:16,786 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:16,787 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:33:16,787 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2053537466] [2021-12-18 22:33:16,787 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:16,788 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:16,788 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:16,788 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:16,788 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:16,789 INFO L87 Difference]: Start difference. First operand 52 states and 53 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,813 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:16,813 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2021-12-18 22:33:16,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:16,813 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-18 22:33:16,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:16,814 INFO L225 Difference]: With dead ends: 55 [2021-12-18 22:33:16,814 INFO L226 Difference]: Without dead ends: 55 [2021-12-18 22:33:16,814 INFO L932 BasicCegarLoop]: 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 [2021-12-18 22:33:16,815 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 2 mSDsluCounter, 9 mSDsCounter, 0 mSdLazyCounter, 17 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 28 SdHoareTripleChecker+Invalid, 17 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 17 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:16,815 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 28 Invalid, 17 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 17 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:16,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-12-18 22:33:16,817 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 53. [2021-12-18 22:33:16,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 48 states have (on average 1.125) internal successors, (54), 52 states have internal predecessors, (54), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,818 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2021-12-18 22:33:16,818 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 38 [2021-12-18 22:33:16,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:16,818 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2021-12-18 22:33:16,818 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:16,818 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2021-12-18 22:33:16,819 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2021-12-18 22:33:16,819 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:16,819 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:16,819 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-12-18 22:33:16,819 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:16,819 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:16,820 INFO L85 PathProgramCache]: Analyzing trace with hash 414994334, now seen corresponding path program 1 times [2021-12-18 22:33:16,820 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:16,820 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1272042495] [2021-12-18 22:33:16,820 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:16,820 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:16,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:16,939 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:16,939 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1272042495] [2021-12-18 22:33:16,940 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1272042495] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:16,940 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [945063230] [2021-12-18 22:33:16,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:16,940 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:16,940 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:16,941 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) [2021-12-18 22:33:16,947 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 22:33:17,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:17,019 INFO L263 TraceCheckSpWp]: Trace formula consists of 175 conjuncts, 21 conjunts are in the unsatisfiable core [2021-12-18 22:33:17,022 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:17,486 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 22:33:17,492 INFO L388 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 [2021-12-18 22:33:17,572 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:17,573 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:18,457 INFO L134 CoverageAnalysis]: Checked inductivity of 147 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:18,457 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [945063230] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:18,457 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:18,457 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 4, 4] total 12 [2021-12-18 22:33:18,457 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [877372982] [2021-12-18 22:33:18,457 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:18,458 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-12-18 22:33:18,458 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:18,458 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-12-18 22:33:18,458 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2021-12-18 22:33:18,459 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:18,657 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:18,657 INFO L93 Difference]: Finished difference Result 85 states and 86 transitions. [2021-12-18 22:33:18,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 22:33:18,658 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 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 42 [2021-12-18 22:33:18,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:18,658 INFO L225 Difference]: With dead ends: 85 [2021-12-18 22:33:18,658 INFO L226 Difference]: Without dead ends: 85 [2021-12-18 22:33:18,659 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 75 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=99, Invalid=243, Unknown=0, NotChecked=0, Total=342 [2021-12-18 22:33:18,659 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 137 mSDsluCounter, 53 mSDsCounter, 0 mSdLazyCounter, 86 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 86 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:18,659 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 65 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 86 Invalid, 0 Unknown, 3 Unchecked, 0.1s Time] [2021-12-18 22:33:18,660 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2021-12-18 22:33:18,662 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 67. [2021-12-18 22:33:18,662 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 67 states, 62 states have (on average 1.1612903225806452) internal successors, (72), 66 states have internal predecessors, (72), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:18,663 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 72 transitions. [2021-12-18 22:33:18,663 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 72 transitions. Word has length 42 [2021-12-18 22:33:18,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:18,663 INFO L470 AbstractCegarLoop]: Abstraction has 67 states and 72 transitions. [2021-12-18 22:33:18,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.4615384615384617) internal successors, (45), 13 states have internal predecessors, (45), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:18,663 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 72 transitions. [2021-12-18 22:33:18,664 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2021-12-18 22:33:18,664 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:18,664 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:18,691 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:18,864 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:18,865 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:18,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:18,865 INFO L85 PathProgramCache]: Analyzing trace with hash -20077561, now seen corresponding path program 1 times [2021-12-18 22:33:18,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:18,866 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [102980492] [2021-12-18 22:33:18,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:18,866 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:18,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:18,931 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:18,931 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:18,931 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [102980492] [2021-12-18 22:33:18,932 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [102980492] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:18,932 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [712326960] [2021-12-18 22:33:18,932 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:18,932 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:18,932 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:18,933 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:18,933 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Waiting until timeout for monitored process [2021-12-18 22:33:18,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:18,997 INFO L263 TraceCheckSpWp]: Trace formula consists of 181 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 22:33:18,998 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:19,048 INFO L388 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 [2021-12-18 22:33:19,113 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:19,113 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:19,214 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:19,214 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [712326960] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:19,214 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:19,215 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3, 3] total 7 [2021-12-18 22:33:19,215 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [622235736] [2021-12-18 22:33:19,215 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:19,215 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 22:33:19,215 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:19,216 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 22:33:19,216 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2021-12-18 22:33:19,216 INFO L87 Difference]: Start difference. First operand 67 states and 72 transitions. Second operand has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2021-12-18 22:33:19,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:19,288 INFO L93 Difference]: Finished difference Result 70 states and 73 transitions. [2021-12-18 22:33:19,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 22:33:19,289 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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 43 [2021-12-18 22:33:19,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:19,289 INFO L225 Difference]: With dead ends: 70 [2021-12-18 22:33:19,289 INFO L226 Difference]: Without dead ends: 70 [2021-12-18 22:33:19,290 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 88 GetRequests, 81 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=41, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:33:19,290 INFO L933 BasicCegarLoop]: 18 mSDtfsCounter, 11 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 11 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 71 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:19,290 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [11 Valid, 47 Invalid, 71 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:33:19,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2021-12-18 22:33:19,293 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 68. [2021-12-18 22:33:19,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 63 states have (on average 1.126984126984127) internal successors, (71), 67 states have internal predecessors, (71), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:19,294 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 71 transitions. [2021-12-18 22:33:19,294 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 71 transitions. Word has length 43 [2021-12-18 22:33:19,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:19,294 INFO L470 AbstractCegarLoop]: Abstraction has 68 states and 71 transitions. [2021-12-18 22:33:19,294 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 4.857142857142857) internal successors, (34), 8 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) [2021-12-18 22:33:19,294 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 71 transitions. [2021-12-18 22:33:19,295 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2021-12-18 22:33:19,295 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:19,295 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:19,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (5)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:19,499 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9,5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:19,499 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:19,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:19,500 INFO L85 PathProgramCache]: Analyzing trace with hash -1223382792, now seen corresponding path program 1 times [2021-12-18 22:33:19,500 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:19,500 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1804436249] [2021-12-18 22:33:19,500 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:19,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:19,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:19,563 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:19,563 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:19,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1804436249] [2021-12-18 22:33:19,563 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1804436249] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:19,563 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1060176633] [2021-12-18 22:33:19,563 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:19,564 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:19,564 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:19,565 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:19,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Waiting until timeout for monitored process [2021-12-18 22:33:19,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:19,645 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 22:33:19,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:19,723 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:19,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:19,808 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:19,808 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1060176633] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:19,809 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:19,809 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5, 5] total 9 [2021-12-18 22:33:19,809 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579574590] [2021-12-18 22:33:19,809 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:19,809 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 22:33:19,809 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:19,810 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 22:33:19,810 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:33:19,810 INFO L87 Difference]: Start difference. First operand 68 states and 71 transitions. Second operand has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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) [2021-12-18 22:33:19,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:19,857 INFO L93 Difference]: Finished difference Result 78 states and 79 transitions. [2021-12-18 22:33:19,857 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 22:33:19,857 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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 49 [2021-12-18 22:33:19,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:19,858 INFO L225 Difference]: With dead ends: 78 [2021-12-18 22:33:19,858 INFO L226 Difference]: Without dead ends: 78 [2021-12-18 22:33:19,858 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 101 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=36, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:33:19,859 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 40 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:19,859 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 61 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:19,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-12-18 22:33:19,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-12-18 22:33:19,863 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 71 states have (on average 1.1126760563380282) internal successors, (79), 75 states have internal predecessors, (79), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:19,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 79 transitions. [2021-12-18 22:33:19,867 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 79 transitions. Word has length 49 [2021-12-18 22:33:19,868 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:19,868 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 79 transitions. [2021-12-18 22:33:19,868 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 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) [2021-12-18 22:33:19,868 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 79 transitions. [2021-12-18 22:33:19,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2021-12-18 22:33:19,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:19,869 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:19,886 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (6)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:20,075 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable10 [2021-12-18 22:33:20,076 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:20,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:20,076 INFO L85 PathProgramCache]: Analyzing trace with hash 1470341546, now seen corresponding path program 2 times [2021-12-18 22:33:20,076 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:20,076 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [997162875] [2021-12-18 22:33:20,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:20,076 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:20,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:20,274 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:20,274 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:20,274 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [997162875] [2021-12-18 22:33:20,274 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [997162875] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:20,275 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [542875090] [2021-12-18 22:33:20,275 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 22:33:20,275 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:20,275 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:20,276 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:20,277 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Waiting until timeout for monitored process [2021-12-18 22:33:20,350 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 22:33:20,351 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 22:33:20,353 INFO L263 TraceCheckSpWp]: Trace formula consists of 229 conjuncts, 27 conjunts are in the unsatisfiable core [2021-12-18 22:33:20,356 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:20,746 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 22:33:20,747 INFO L388 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 [2021-12-18 22:33:21,037 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:21,037 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:21,993 INFO L134 CoverageAnalysis]: Checked inductivity of 183 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:21,995 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [542875090] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:21,995 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:21,995 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 21 [2021-12-18 22:33:21,996 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [988767790] [2021-12-18 22:33:21,996 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:21,996 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-12-18 22:33:21,996 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:21,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-12-18 22:33:21,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=407, Unknown=0, NotChecked=0, Total=506 [2021-12-18 22:33:21,997 INFO L87 Difference]: Start difference. First operand 76 states and 79 transitions. Second operand has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:22,553 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:22,554 INFO L93 Difference]: Finished difference Result 134 states and 135 transitions. [2021-12-18 22:33:22,554 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-12-18 22:33:22,554 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 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 57 [2021-12-18 22:33:22,554 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:22,555 INFO L225 Difference]: With dead ends: 134 [2021-12-18 22:33:22,555 INFO L226 Difference]: Without dead ends: 134 [2021-12-18 22:33:22,556 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 131 GetRequests, 99 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=282, Invalid=840, Unknown=0, NotChecked=0, Total=1122 [2021-12-18 22:33:22,556 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 402 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 297 mSolverCounterSat, 43 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 402 SdHoareTripleChecker+Valid, 145 SdHoareTripleChecker+Invalid, 343 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 43 IncrementalHoareTripleChecker+Valid, 297 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 3 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:22,556 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [402 Valid, 145 Invalid, 343 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [43 Valid, 297 Invalid, 0 Unknown, 3 Unchecked, 0.2s Time] [2021-12-18 22:33:22,557 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2021-12-18 22:33:22,559 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 97. [2021-12-18 22:33:22,560 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 92 states have (on average 1.1630434782608696) internal successors, (107), 96 states have internal predecessors, (107), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:22,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 107 transitions. [2021-12-18 22:33:22,560 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 107 transitions. Word has length 57 [2021-12-18 22:33:22,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:22,561 INFO L470 AbstractCegarLoop]: Abstraction has 97 states and 107 transitions. [2021-12-18 22:33:22,561 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 22 states have (on average 4.090909090909091) internal successors, (90), 22 states have internal predecessors, (90), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:22,561 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 107 transitions. [2021-12-18 22:33:22,561 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-12-18 22:33:22,562 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:22,562 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 5, 5, 4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:22,586 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (7)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:22,762 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11,7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:22,763 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:22,763 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:22,763 INFO L85 PathProgramCache]: Analyzing trace with hash -1664052357, now seen corresponding path program 2 times [2021-12-18 22:33:22,763 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:22,763 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [876446442] [2021-12-18 22:33:22,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:22,764 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:22,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:22,880 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 42 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:22,880 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:22,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [876446442] [2021-12-18 22:33:22,880 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [876446442] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:22,880 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [165565733] [2021-12-18 22:33:22,880 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 22:33:22,881 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:22,881 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:22,882 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:22,888 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Waiting until timeout for monitored process [2021-12-18 22:33:22,940 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-12-18 22:33:22,940 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 22:33:22,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 22:33:22,944 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:23,040 INFO L388 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 [2021-12-18 22:33:23,250 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-18 22:33:23,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:23,731 INFO L134 CoverageAnalysis]: Checked inductivity of 187 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 179 trivial. 0 not checked. [2021-12-18 22:33:23,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [165565733] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:23,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:23,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5, 5] total 16 [2021-12-18 22:33:23,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588989085] [2021-12-18 22:33:23,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:23,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 17 states [2021-12-18 22:33:23,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:23,732 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2021-12-18 22:33:23,733 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=217, Unknown=0, NotChecked=0, Total=272 [2021-12-18 22:33:23,733 INFO L87 Difference]: Start difference. First operand 97 states and 107 transitions. Second operand has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:24,028 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:24,028 INFO L93 Difference]: Finished difference Result 96 states and 101 transitions. [2021-12-18 22:33:24,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 22:33:24,029 INFO L78 Accepts]: Start accepts. Automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 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 58 [2021-12-18 22:33:24,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:24,030 INFO L225 Difference]: With dead ends: 96 [2021-12-18 22:33:24,030 INFO L226 Difference]: Without dead ends: 96 [2021-12-18 22:33:24,031 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 130 GetRequests, 106 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=182, Invalid=468, Unknown=0, NotChecked=0, Total=650 [2021-12-18 22:33:24,031 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 137 mSDsluCounter, 70 mSDsCounter, 0 mSdLazyCounter, 168 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 137 SdHoareTripleChecker+Valid, 87 SdHoareTripleChecker+Invalid, 200 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 168 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:24,032 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [137 Valid, 87 Invalid, 200 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 168 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 22:33:24,032 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-18 22:33:24,034 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-18 22:33:24,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0978260869565217) internal successors, (101), 95 states have internal predecessors, (101), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:24,035 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2021-12-18 22:33:24,035 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 58 [2021-12-18 22:33:24,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:24,035 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2021-12-18 22:33:24,035 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 17 states, 16 states have (on average 3.9375) internal successors, (63), 17 states have internal predecessors, (63), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:24,035 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2021-12-18 22:33:24,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2021-12-18 22:33:24,036 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:24,036 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:24,060 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (8)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:24,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12,8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:24,247 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:24,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:24,248 INFO L85 PathProgramCache]: Analyzing trace with hash 579926520, now seen corresponding path program 2 times [2021-12-18 22:33:24,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:24,248 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1380109025] [2021-12-18 22:33:24,248 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:24,248 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:24,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:24,345 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:24,345 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:24,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1380109025] [2021-12-18 22:33:24,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1380109025] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:24,346 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1753725549] [2021-12-18 22:33:24,346 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 22:33:24,346 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:24,346 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:24,348 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:24,373 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Waiting until timeout for monitored process [2021-12-18 22:33:24,438 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 22:33:24,438 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 22:33:24,440 INFO L263 TraceCheckSpWp]: Trace formula consists of 276 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 22:33:24,441 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:24,556 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:24,693 INFO L134 CoverageAnalysis]: Checked inductivity of 226 backedges. 0 proven. 81 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:24,694 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1753725549] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:24,694 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:24,694 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 13 [2021-12-18 22:33:24,694 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [192738188] [2021-12-18 22:33:24,694 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:24,695 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 22:33:24,695 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:24,695 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 22:33:24,695 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-18 22:33:24,696 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:24,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:24,739 INFO L93 Difference]: Finished difference Result 96 states and 97 transitions. [2021-12-18 22:33:24,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 22:33:24,740 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 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 69 [2021-12-18 22:33:24,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:24,740 INFO L225 Difference]: With dead ends: 96 [2021-12-18 22:33:24,740 INFO L226 Difference]: Without dead ends: 96 [2021-12-18 22:33:24,740 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 145 GetRequests, 133 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-18 22:33:24,741 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 41 mSDsluCounter, 48 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 41 SdHoareTripleChecker+Valid, 65 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:24,741 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [41 Valid, 65 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:24,742 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 96 states. [2021-12-18 22:33:24,743 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 96 to 96. [2021-12-18 22:33:24,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 92 states have (on average 1.0543478260869565) internal successors, (97), 95 states have internal predecessors, (97), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:24,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 97 transitions. [2021-12-18 22:33:24,744 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 97 transitions. Word has length 69 [2021-12-18 22:33:24,744 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:24,744 INFO L470 AbstractCegarLoop]: Abstraction has 96 states and 97 transitions. [2021-12-18 22:33:24,744 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 5.0) internal successors, (65), 13 states have internal predecessors, (65), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:24,745 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 97 transitions. [2021-12-18 22:33:24,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2021-12-18 22:33:24,745 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:24,745 INFO L514 BasicCegarLoop]: trace histogram [11, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:24,766 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (9)] Ended with exit code 0 [2021-12-18 22:33:24,959 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-12-18 22:33:24,960 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:24,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:24,960 INFO L85 PathProgramCache]: Analyzing trace with hash -713446614, now seen corresponding path program 3 times [2021-12-18 22:33:24,960 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:24,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1889977082] [2021-12-18 22:33:24,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:24,960 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:24,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:25,096 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 199 proven. 46 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-18 22:33:25,097 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:25,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1889977082] [2021-12-18 22:33:25,097 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1889977082] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:25,097 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1773715661] [2021-12-18 22:33:25,097 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 22:33:25,097 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:25,098 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:25,099 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:25,108 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Waiting until timeout for monitored process [2021-12-18 22:33:25,170 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 2 check-sat command(s) [2021-12-18 22:33:25,170 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 22:33:25,171 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 17 conjunts are in the unsatisfiable core [2021-12-18 22:33:25,173 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:25,488 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-18 22:33:25,489 INFO L388 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 [2021-12-18 22:33:25,877 INFO L134 CoverageAnalysis]: Checked inductivity of 390 backedges. 47 proven. 0 refuted. 0 times theorem prover too weak. 343 trivial. 0 not checked. [2021-12-18 22:33:25,877 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 22:33:25,877 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1773715661] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:25,877 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-12-18 22:33:25,877 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [13] total 19 [2021-12-18 22:33:25,877 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849458845] [2021-12-18 22:33:25,877 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:25,878 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 22:33:25,878 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:25,878 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 22:33:25,878 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=254, Unknown=0, NotChecked=0, Total=342 [2021-12-18 22:33:25,878 INFO L87 Difference]: Start difference. First operand 96 states and 97 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2021-12-18 22:33:25,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:25,969 INFO L93 Difference]: Finished difference Result 95 states and 96 transitions. [2021-12-18 22:33:25,969 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-18 22:33:25,969 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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 87 [2021-12-18 22:33:25,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:25,970 INFO L225 Difference]: With dead ends: 95 [2021-12-18 22:33:25,970 INFO L226 Difference]: Without dead ends: 95 [2021-12-18 22:33:25,970 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 104 GetRequests, 82 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=130, Invalid=422, Unknown=0, NotChecked=0, Total=552 [2021-12-18 22:33:25,971 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 46 mSDsluCounter, 19 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 46 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 46 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:25,971 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [46 Valid, 32 Invalid, 46 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:25,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 95 states. [2021-12-18 22:33:25,973 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 95 to 94. [2021-12-18 22:33:25,973 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 91 states have (on average 1.043956043956044) internal successors, (95), 93 states have internal predecessors, (95), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:25,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 95 transitions. [2021-12-18 22:33:25,973 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 95 transitions. Word has length 87 [2021-12-18 22:33:25,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:25,974 INFO L470 AbstractCegarLoop]: Abstraction has 94 states and 95 transitions. [2021-12-18 22:33:25,974 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 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) [2021-12-18 22:33:25,974 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 95 transitions. [2021-12-18 22:33:25,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2021-12-18 22:33:25,974 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:25,974 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:26,000 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (10)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:26,188 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable14 [2021-12-18 22:33:26,188 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr6REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 5 more)] === [2021-12-18 22:33:26,188 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:26,188 INFO L85 PathProgramCache]: Analyzing trace with hash 1572522744, now seen corresponding path program 3 times [2021-12-18 22:33:26,188 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:26,189 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1613990293] [2021-12-18 22:33:26,189 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:26,189 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:26,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 22:33:26,245 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-18 22:33:26,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 22:33:26,305 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-18 22:33:26,305 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-18 22:33:26,306 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr6REQUIRES_VIOLATION (8 of 9 remaining) [2021-12-18 22:33:26,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (7 of 9 remaining) [2021-12-18 22:33:26,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (6 of 9 remaining) [2021-12-18 22:33:26,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (5 of 9 remaining) [2021-12-18 22:33:26,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (4 of 9 remaining) [2021-12-18 22:33:26,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (3 of 9 remaining) [2021-12-18 22:33:26,308 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (2 of 9 remaining) [2021-12-18 22:33:26,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (1 of 9 remaining) [2021-12-18 22:33:26,309 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK (0 of 9 remaining) [2021-12-18 22:33:26,309 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2021-12-18 22:33:26,312 INFO L732 BasicCegarLoop]: Path program histogram: [3, 3, 2, 2, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:26,315 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 22:33:26,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:33:26 BoogieIcfgContainer [2021-12-18 22:33:26,364 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 22:33:26,365 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 22:33:26,365 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 22:33:26,365 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 22:33:26,366 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:14" (3/4) ... [2021-12-18 22:33:26,367 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-18 22:33:26,413 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 22:33:26,413 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 22:33:26,414 INFO L158 Benchmark]: Toolchain (without parser) took 12725.87ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 58.6MB in the beginning and 106.7MB in the end (delta: -48.1MB). Peak memory consumption was 20.7MB. Max. memory is 16.1GB. [2021-12-18 22:33:26,414 INFO L158 Benchmark]: CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:26,414 INFO L158 Benchmark]: CACSL2BoogieTranslator took 204.88ms. Allocated memory is still 90.2MB. Free memory was 58.3MB in the beginning and 67.4MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 22:33:26,415 INFO L158 Benchmark]: Boogie Procedure Inliner took 23.60ms. Allocated memory is still 90.2MB. Free memory was 67.4MB in the beginning and 65.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 22:33:26,415 INFO L158 Benchmark]: Boogie Preprocessor took 17.75ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:26,415 INFO L158 Benchmark]: RCFGBuilder took 263.30ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 54.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 22:33:26,416 INFO L158 Benchmark]: TraceAbstraction took 12159.23ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 53.5MB in the beginning and 111.9MB in the end (delta: -58.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. [2021-12-18 22:33:26,416 INFO L158 Benchmark]: Witness Printer took 48.44ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 106.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-18 22:33:26,417 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19ms. Allocated memory is still 90.2MB. Free memory was 46.2MB in the beginning and 46.1MB in the end (delta: 34.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 204.88ms. Allocated memory is still 90.2MB. Free memory was 58.3MB in the beginning and 67.4MB in the end (delta: -9.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 23.60ms. Allocated memory is still 90.2MB. Free memory was 67.4MB in the beginning and 65.7MB in the end (delta: 1.7MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 17.75ms. Allocated memory is still 90.2MB. Free memory was 65.7MB in the beginning and 64.3MB in the end (delta: 1.4MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 263.30ms. Allocated memory is still 90.2MB. Free memory was 64.3MB in the beginning and 54.1MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 12159.23ms. Allocated memory was 90.2MB in the beginning and 159.4MB in the end (delta: 69.2MB). Free memory was 53.5MB in the beginning and 111.9MB in the end (delta: -58.5MB). Peak memory consumption was 13.2MB. Max. memory is 16.1GB. * Witness Printer took 48.44ms. Allocated memory is still 159.4MB. Free memory was 111.9MB in the beginning and 106.7MB in the end (delta: 5.2MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 26]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L1] int array[10]; VAL [array={1:0}] [L25] CALL, EXPR getNumbers2() [L13] CALL, EXPR getNumbers() [L5] int i = 0; VAL [array={1:0}, i=0] [L5] COND TRUE i < 10 VAL [array={1:0}, i=0] [L6] array[i] = i VAL [array={1:0}, i=0] [L5] ++i VAL [array={1:0}, i=1] [L5] COND TRUE i < 10 VAL [array={1:0}, i=1] [L6] array[i] = i VAL [array={1:0}, i=1] [L5] ++i VAL [array={1:0}, i=2] [L5] COND TRUE i < 10 VAL [array={1:0}, i=2] [L6] array[i] = i VAL [array={1:0}, i=2] [L5] ++i VAL [array={1:0}, i=3] [L5] COND TRUE i < 10 VAL [array={1:0}, i=3] [L6] array[i] = i VAL [array={1:0}, i=3] [L5] ++i VAL [array={1:0}, i=4] [L5] COND TRUE i < 10 VAL [array={1:0}, i=4] [L6] array[i] = i VAL [array={1:0}, i=4] [L5] ++i VAL [array={1:0}, i=5] [L5] COND TRUE i < 10 VAL [array={1:0}, i=5] [L6] array[i] = i VAL [array={1:0}, i=5] [L5] ++i VAL [array={1:0}, i=6] [L5] COND TRUE i < 10 VAL [array={1:0}, i=6] [L6] array[i] = i VAL [array={1:0}, i=6] [L5] ++i VAL [array={1:0}, i=7] [L5] COND TRUE i < 10 VAL [array={1:0}, i=7] [L6] array[i] = i VAL [array={1:0}, i=7] [L5] ++i VAL [array={1:0}, i=8] [L5] COND TRUE i < 10 VAL [array={1:0}, i=8] [L6] array[i] = i VAL [array={1:0}, i=8] [L5] ++i VAL [array={1:0}, i=9] [L5] COND TRUE i < 10 VAL [array={1:0}, i=9] [L6] array[i] = i VAL [array={1:0}, i=9] [L5] ++i VAL [array={1:0}, i=10] [L5] COND FALSE !(i < 10) VAL [array={1:0}, i=10] [L9] return array; VAL [\result={1:0}, array={1:0}, i=10] [L13] RET, EXPR getNumbers() [L13] int* numbers = getNumbers(); [L15] int numbers2[10]; [L17] int i = 0; VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}, numbers[i]=0] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=0, numbers={1:0}, numbers2={10:0}, numbers[i]=0] [L17] ++i VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}, numbers[i]=1] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=1, numbers={1:0}, numbers2={10:0}, numbers[i]=1] [L17] ++i VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}, numbers[i]=2] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=2, numbers={1:0}, numbers2={10:0}, numbers[i]=2] [L17] ++i VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}, numbers[i]=3] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=3, numbers={1:0}, numbers2={10:0}, numbers[i]=3] [L17] ++i VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}, numbers[i]=4] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=4, numbers={1:0}, numbers2={10:0}, numbers[i]=4] [L17] ++i VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}, numbers[i]=5] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=5, numbers={1:0}, numbers2={10:0}, numbers[i]=5] [L17] ++i VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}, numbers[i]=6] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=6, numbers={1:0}, numbers2={10:0}, numbers[i]=6] [L17] ++i VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}, numbers[i]=7] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=7, numbers={1:0}, numbers2={10:0}, numbers[i]=7] [L17] ++i VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}, numbers[i]=8] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=8, numbers={1:0}, numbers2={10:0}, numbers[i]=8] [L17] ++i VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}] [L17] COND TRUE i < 10 VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}] [L18] EXPR numbers[i] VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}, numbers[i]=9] [L18] numbers2[i] = numbers[i] VAL [array={1:0}, i=9, numbers={1:0}, numbers2={10:0}, numbers[i]=9] [L17] ++i VAL [array={1:0}, i=10, numbers={1:0}, numbers2={10:0}] [L17] COND FALSE !(i < 10) VAL [array={1:0}, i=10, numbers={1:0}, numbers2={10:0}] [L21] return numbers2; [L21] return numbers2; VAL [\result={10:0}, array={1:0}, i=10, numbers={1:0}] [L25] RET, EXPR getNumbers2() [L25] int *numbers = getNumbers2(); [L26] numbers[0] = 100 - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 6]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 18]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 26]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 24]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 28 locations, 9 error locations. Started 1 CEGAR loops. OverallTime: 12.1s, OverallIterations: 16, TraceHistogramMax: 11, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 1.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 1068 SdHoareTripleChecker+Valid, 0.8s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 1068 mSDsluCounter, 756 SdHoareTripleChecker+Invalid, 0.6s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 6 IncrementalHoareTripleChecker+Unchecked, 514 mSDsCounter, 155 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 968 IncrementalHoareTripleChecker+Invalid, 1129 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 155 mSolverCounterUnsat, 242 mSDtfsCounter, 968 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 873 GetRequests, 710 SyntacticMatches, 1 SemanticMatches, 162 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 338 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=97occurred in iteration=12, InterpolantAutomatonStates: 111, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 69 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.5s SatisfiabilityAnalysisTime, 6.8s InterpolantComputationTime, 1109 NumberOfCodeBlocks, 987 NumberOfCodeBlocksAsserted, 28 NumberOfCheckSat, 1332 ConstructedInterpolants, 68 QuantifiedInterpolants, 11009 SizeOfPredicates, 22 NumberOfNonLiveVariables, 1320 ConjunctsInSsa, 112 ConjunctsInUnsatCore, 32 InterpolantComputations, 7 PerfectInterpolantSequences, 3996/4561 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-18 22:33:26,461 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)