./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ae007674 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/list-ext-properties/test-0158_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:52:39,528 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:52:39,529 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:52:39,554 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:52:39,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:52:39,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:52:39,556 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:52:39,558 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:52:39,559 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:52:39,560 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:52:39,568 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:52:39,573 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:52:39,573 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:52:39,579 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:52:39,580 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:52:39,581 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:52:39,582 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:52:39,584 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:52:39,585 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:52:39,589 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:52:39,592 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:52:39,595 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:52:39,596 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:52:39,597 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:52:39,599 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:52:39,603 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:52:39,603 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:52:39,604 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:52:39,607 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:52:39,607 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:52:39,608 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:52:39,609 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:52:39,610 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:52:39,611 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:52:39,611 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:52:39,612 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:52:39,613 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:52:39,613 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:52:39,613 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:52:39,614 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:52:39,615 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:52:39,616 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-28 05:52:39,643 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:52:39,643 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:52:39,644 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:52:39,645 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:52:39,645 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:52:39,646 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:52:39,646 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:52:39,647 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:52:39,647 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:52:39,647 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:52:39,648 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:52:39,648 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 05:52:39,648 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:52:39,648 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:52:39,649 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:52:39,649 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 05:52:39,649 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 05:52:39,649 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 05:52:39,649 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:52:39,650 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 05:52:39,650 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:52:39,650 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:52:39,650 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:52:39,650 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:52:39,651 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:52:39,651 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:52:39,651 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:52:39,651 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:52:39,652 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 05:52:39,652 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 05:52:39,652 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-12-28 05:52:39,975 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:52:39,996 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:52:40,000 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:52:40,001 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:52:40,002 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:52:40,004 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-12-28 05:52:40,065 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b53479893/7d00f818b4ed480fae7dff229d983e3c/FLAG5a5bb2643 [2021-12-28 05:52:40,552 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:52:40,553 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-12-28 05:52:40,571 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b53479893/7d00f818b4ed480fae7dff229d983e3c/FLAG5a5bb2643 [2021-12-28 05:52:40,924 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b53479893/7d00f818b4ed480fae7dff229d983e3c [2021-12-28 05:52:40,928 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:52:40,930 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:52:40,931 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:52:40,931 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:52:40,934 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:52:40,935 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:52:40" (1/1) ... [2021-12-28 05:52:40,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4552de6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:40, skipping insertion in model container [2021-12-28 05:52:40,936 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:52:40" (1/1) ... [2021-12-28 05:52:40,942 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:52:40,974 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:52:41,296 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:52:41,304 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:52:41,350 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:52:41,377 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:52:41,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41 WrapperNode [2021-12-28 05:52:41,378 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:52:41,379 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:52:41,379 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:52:41,380 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:52:41,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,413 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,432 INFO L137 Inliner]: procedures = 124, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2021-12-28 05:52:41,433 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:52:41,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:52:41,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:52:41,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:52:41,441 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,441 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,447 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,447 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,461 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,463 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,467 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,471 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:52:41,474 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:52:41,475 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:52:41,475 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:52:41,476 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (1/1) ... [2021-12-28 05:52:41,482 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:52:41,491 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:52:41,504 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) [2021-12-28 05:52:41,539 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 [2021-12-28 05:52:41,546 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-28 05:52:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 05:52:41,547 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 05:52:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 05:52:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 05:52:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 05:52:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 05:52:41,548 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-28 05:52:41,549 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:52:41,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:52:41,662 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:52:41,664 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:52:41,849 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:52:41,853 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:52:41,853 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 05:52:41,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:41 BoogieIcfgContainer [2021-12-28 05:52:41,854 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:52:41,856 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:52:41,856 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:52:41,858 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:52:41,859 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:52:40" (1/3) ... [2021-12-28 05:52:41,859 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6422f848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:52:41, skipping insertion in model container [2021-12-28 05:52:41,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:41" (2/3) ... [2021-12-28 05:52:41,860 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6422f848 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:52:41, skipping insertion in model container [2021-12-28 05:52:41,860 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:41" (3/3) ... [2021-12-28 05:52:41,861 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-12-28 05:52:41,865 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:52:41,866 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-28 05:52:41,913 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:52:41,920 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 [2021-12-28 05:52:41,920 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-28 05:52:41,932 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 2.0) 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) [2021-12-28 05:52:41,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-28 05:52:41,940 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:41,941 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-28 05:52:41,942 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:41,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:41,947 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-28 05:52:41,954 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:41,955 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [459065966] [2021-12-28 05:52:41,955 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:41,957 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:42,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:42,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:42,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [459065966] [2021-12-28 05:52:42,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [459065966] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:42,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:42,143 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:42,144 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [165723614] [2021-12-28 05:52:42,144 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:42,148 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:42,148 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:42,174 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:42,175 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:42,177 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 2.0) 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:42,225 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:42,226 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-12-28 05:52:42,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:42,228 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-28 05:52:42,229 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:42,235 INFO L225 Difference]: With dead ends: 20 [2021-12-28 05:52:42,235 INFO L226 Difference]: Without dead ends: 18 [2021-12-28 05:52:42,238 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 [2021-12-28 05:52:42,242 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:42,243 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:42,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-28 05:52:42,266 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-28 05:52:42,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 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) [2021-12-28 05:52:42,268 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-12-28 05:52:42,269 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2021-12-28 05:52:42,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:42,270 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-12-28 05:52:42,270 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:42,270 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-12-28 05:52:42,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-28 05:52:42,271 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:42,271 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-28 05:52:42,271 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 05:52:42,271 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:42,274 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:42,274 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-28 05:52:42,274 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:42,275 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1504689721] [2021-12-28 05:52:42,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:42,275 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:42,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:42,354 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:42,354 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:42,355 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1504689721] [2021-12-28 05:52:42,355 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1504689721] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:42,356 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:42,356 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:42,356 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439643118] [2021-12-28 05:52:42,356 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:42,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:42,358 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:42,358 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:42,359 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:42,359 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:42,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:42,383 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-12-28 05:52:42,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:42,383 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-28 05:52:42,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:42,384 INFO L225 Difference]: With dead ends: 13 [2021-12-28 05:52:42,385 INFO L226 Difference]: Without dead ends: 13 [2021-12-28 05:52:42,385 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 [2021-12-28 05:52:42,389 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:42,390 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:42,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-28 05:52:42,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-28 05:52:42,396 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:42,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-28 05:52:42,397 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 3 [2021-12-28 05:52:42,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:42,397 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-28 05:52:42,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:42,397 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-28 05:52:42,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 05:52:42,398 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:42,399 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:42,401 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 05:52:42,402 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:42,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:42,403 INFO L85 PathProgramCache]: Analyzing trace with hash 1114117971, now seen corresponding path program 1 times [2021-12-28 05:52:42,403 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:42,403 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1457863293] [2021-12-28 05:52:42,404 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:42,404 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:42,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:42,499 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:42,500 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 05:52:42,500 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1457863293] [2021-12-28 05:52:42,500 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1457863293] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:42,501 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:42,501 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:42,501 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1109049315] [2021-12-28 05:52:42,501 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:42,502 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:42,502 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 05:52:42,502 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:42,502 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:42,503 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 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) [2021-12-28 05:52:42,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:42,532 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-12-28 05:52:42,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:42,533 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 10 [2021-12-28 05:52:42,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:42,533 INFO L225 Difference]: With dead ends: 17 [2021-12-28 05:52:42,534 INFO L226 Difference]: Without dead ends: 17 [2021-12-28 05:52:42,534 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:42,535 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:42,535 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:42,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-28 05:52:42,537 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-12-28 05:52:42,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:42,538 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-12-28 05:52:42,538 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-12-28 05:52:42,539 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:42,539 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-12-28 05:52:42,539 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-12-28 05:52:42,539 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-12-28 05:52:42,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 05:52:42,540 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:42,540 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:42,540 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-28 05:52:42,540 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:42,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:42,541 INFO L85 PathProgramCache]: Analyzing trace with hash 1261881331, now seen corresponding path program 1 times [2021-12-28 05:52:42,541 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 05:52:42,541 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1917302256] [2021-12-28 05:52:42,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:42,542 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 05:52:42,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 05:52:42,561 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 05:52:42,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 05:52:42,588 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-28 05:52:42,589 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 05:52:42,590 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2021-12-28 05:52:42,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-12-28 05:52:42,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 11 remaining) [2021-12-28 05:52:42,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (7 of 11 remaining) [2021-12-28 05:52:42,592 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (6 of 11 remaining) [2021-12-28 05:52:42,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (5 of 11 remaining) [2021-12-28 05:52:42,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (4 of 11 remaining) [2021-12-28 05:52:42,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (3 of 11 remaining) [2021-12-28 05:52:42,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (2 of 11 remaining) [2021-12-28 05:52:42,593 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (1 of 11 remaining) [2021-12-28 05:52:42,596 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (0 of 11 remaining) [2021-12-28 05:52:42,597 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 05:52:42,599 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-28 05:52:42,602 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 05:52:42,625 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 05:52:42 BoogieIcfgContainer [2021-12-28 05:52:42,625 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 05:52:42,626 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 05:52:42,626 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 05:52:42,627 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 05:52:42,627 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:41" (3/4) ... [2021-12-28 05:52:42,630 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 05:52:42,630 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 05:52:42,630 INFO L158 Benchmark]: Toolchain (without parser) took 1700.40ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 39.0MB in the beginning and 37.6MB in the end (delta: 1.4MB). Peak memory consumption was 16.1MB. Max. memory is 16.1GB. [2021-12-28 05:52:42,631 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:52:42,631 INFO L158 Benchmark]: CACSL2BoogieTranslator took 447.43ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 37.8MB in the end (delta: 1.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-28 05:52:42,631 INFO L158 Benchmark]: Boogie Procedure Inliner took 54.06ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 36.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:52:42,632 INFO L158 Benchmark]: Boogie Preprocessor took 39.13ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 34.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:52:42,632 INFO L158 Benchmark]: RCFGBuilder took 380.63ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 55.8MB in the end (delta: -21.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. [2021-12-28 05:52:42,632 INFO L158 Benchmark]: TraceAbstraction took 769.49ms. Allocated memory is still 75.5MB. Free memory was 55.3MB in the beginning and 38.0MB in the end (delta: 17.3MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. [2021-12-28 05:52:42,632 INFO L158 Benchmark]: Witness Printer took 3.63ms. Allocated memory is still 75.5MB. Free memory was 38.0MB in the beginning and 37.6MB in the end (delta: 392.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 05:52:42,634 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20ms. Allocated memory is still 60.8MB. Free memory was 42.5MB in the beginning and 42.4MB in the end (delta: 33.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 447.43ms. Allocated memory is still 60.8MB. Free memory was 38.9MB in the beginning and 37.8MB in the end (delta: 1.0MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 54.06ms. Allocated memory is still 60.8MB. Free memory was 37.6MB in the beginning and 36.0MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 39.13ms. Allocated memory is still 60.8MB. Free memory was 35.8MB in the beginning and 34.7MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 380.63ms. Allocated memory was 60.8MB in the beginning and 75.5MB in the end (delta: 14.7MB). Free memory was 34.7MB in the beginning and 55.8MB in the end (delta: -21.1MB). Peak memory consumption was 14.3MB. Max. memory is 16.1GB. * TraceAbstraction took 769.49ms. Allocated memory is still 75.5MB. Free memory was 55.3MB in the beginning and 38.0MB in the end (delta: 17.3MB). Peak memory consumption was 17.3MB. Max. memory is 16.1GB. * Witness Printer took 3.63ms. Allocated memory is still 75.5MB. Free memory was 38.0MB in the beginning and 37.6MB in the end (delta: 392.3kB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={3:0}, malloc(37U)={-1:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={3:0}] [L540] EXPR data.str.p2 VAL [data={3:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 0.7s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 29 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 37 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-12-28 05:52:42,670 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 Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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/list-ext-properties/test-0158_1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.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 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 05:52:44,477 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 05:52:44,478 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 05:52:44,510 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 05:52:44,511 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 05:52:44,512 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 05:52:44,513 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 05:52:44,515 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 05:52:44,517 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 05:52:44,518 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 05:52:44,518 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 05:52:44,520 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 05:52:44,520 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 05:52:44,521 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 05:52:44,522 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 05:52:44,523 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 05:52:44,524 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 05:52:44,528 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 05:52:44,531 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 05:52:44,536 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 05:52:44,539 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 05:52:44,540 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 05:52:44,541 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 05:52:44,543 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 05:52:44,548 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 05:52:44,552 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 05:52:44,553 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 05:52:44,553 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 05:52:44,554 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 05:52:44,555 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 05:52:44,556 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 05:52:44,556 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 05:52:44,557 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 05:52:44,560 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 05:52:44,561 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 05:52:44,562 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 05:52:44,562 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 05:52:44,563 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 05:52:44,563 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 05:52:44,564 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 05:52:44,565 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 05:52:44,566 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-28 05:52:44,591 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 05:52:44,592 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 05:52:44,593 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 05:52:44,593 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 05:52:44,594 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 05:52:44,594 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 05:52:44,595 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 05:52:44,595 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 05:52:44,596 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 05:52:44,596 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 05:52:44,597 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 05:52:44,597 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 05:52:44,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 05:52:44,597 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 05:52:44,597 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 05:52:44,598 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 05:52:44,598 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 05:52:44,598 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 05:52:44,598 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 05:52:44,598 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 05:52:44,599 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-28 05:52:44,599 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-28 05:52:44,599 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 05:52:44,599 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 05:52:44,599 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 05:52:44,600 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 05:52:44,600 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 05:52:44,600 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:52:44,600 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 05:52:44,600 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 05:52:44,601 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-28 05:52:44,601 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-28 05:52:44,601 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-28 05:52:44,601 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 7140a276a0ca1ba8339f047ca5220394bc3f48542635b8ad8e347c34fb7ba260 [2021-12-28 05:52:44,891 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 05:52:44,916 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 05:52:44,919 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 05:52:44,920 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 05:52:44,921 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 05:52:44,922 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-12-28 05:52:44,984 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46081cbd0/37df79908b454e9e981008be01104f43/FLAGc0c129357 [2021-12-28 05:52:45,476 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 05:52:45,476 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext-properties/test-0158_1-2.i [2021-12-28 05:52:45,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46081cbd0/37df79908b454e9e981008be01104f43/FLAGc0c129357 [2021-12-28 05:52:45,965 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/46081cbd0/37df79908b454e9e981008be01104f43 [2021-12-28 05:52:45,967 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 05:52:45,968 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 05:52:45,971 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 05:52:45,971 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 05:52:45,977 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 05:52:45,977 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:52:45" (1/1) ... [2021-12-28 05:52:45,978 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4b869ee5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:45, skipping insertion in model container [2021-12-28 05:52:45,978 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 05:52:45" (1/1) ... [2021-12-28 05:52:45,992 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 05:52:46,031 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 05:52:46,293 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:52:46,303 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 05:52:46,348 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 05:52:46,377 INFO L208 MainTranslator]: Completed translation [2021-12-28 05:52:46,378 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46 WrapperNode [2021-12-28 05:52:46,380 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 05:52:46,381 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 05:52:46,381 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 05:52:46,381 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 05:52:46,387 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,420 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,439 INFO L137 Inliner]: procedures = 127, calls = 15, calls flagged for inlining = 2, calls inlined = 2, statements flattened = 30 [2021-12-28 05:52:46,439 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 05:52:46,440 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 05:52:46,440 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 05:52:46,440 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 05:52:46,446 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,447 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,453 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,453 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,472 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 05:52:46,484 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 05:52:46,485 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 05:52:46,485 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 05:52:46,486 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (1/1) ... [2021-12-28 05:52:46,492 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 05:52:46,501 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 05:52:46,516 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) [2021-12-28 05:52:46,531 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 [2021-12-28 05:52:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-28 05:52:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-28 05:52:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 05:52:46,563 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-12-28 05:52:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-28 05:52:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE1 [2021-12-28 05:52:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-28 05:52:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-12-28 05:52:46,571 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-28 05:52:46,572 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 05:52:46,572 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 05:52:46,638 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 05:52:46,639 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 05:52:46,841 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 05:52:46,846 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 05:52:46,846 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-28 05:52:46,847 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:46 BoogieIcfgContainer [2021-12-28 05:52:46,848 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 05:52:46,849 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 05:52:46,849 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 05:52:46,852 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 05:52:46,852 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 05:52:45" (1/3) ... [2021-12-28 05:52:46,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648868e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:52:46, skipping insertion in model container [2021-12-28 05:52:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 05:52:46" (2/3) ... [2021-12-28 05:52:46,853 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@648868e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 05:52:46, skipping insertion in model container [2021-12-28 05:52:46,853 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:46" (3/3) ... [2021-12-28 05:52:46,854 INFO L111 eAbstractionObserver]: Analyzing ICFG test-0158_1-2.i [2021-12-28 05:52:46,858 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 05:52:46,859 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 11 error locations. [2021-12-28 05:52:46,892 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 05:52:46,905 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 [2021-12-28 05:52:46,907 INFO L340 AbstractCegarLoop]: Starting to check reachability of 11 error locations. [2021-12-28 05:52:46,930 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 13 states have (on average 2.0) 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) [2021-12-28 05:52:46,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-28 05:52:46,936 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:46,936 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-28 05:52:46,938 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:46,947 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:46,947 INFO L85 PathProgramCache]: Analyzing trace with hash 29857, now seen corresponding path program 1 times [2021-12-28 05:52:46,957 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:52:46,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1687591448] [2021-12-28 05:52:46,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:46,959 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:52:46,960 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:52:46,965 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 05:52:46,966 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-28 05:52:47,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,066 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-28 05:52:47,069 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:52:47,157 INFO L353 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-12-28 05:52:47,159 INFO L387 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 1 case distinctions, treesize of input 9 treesize of output 14 [2021-12-28 05:52:47,196 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:47,196 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:52:47,197 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:52:47,197 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1687591448] [2021-12-28 05:52:47,197 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1687591448] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:47,197 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:47,197 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:47,199 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [574921036] [2021-12-28 05:52:47,199 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:47,202 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:47,203 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:52:47,225 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:47,226 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:47,228 INFO L87 Difference]: Start difference. First operand has 25 states, 13 states have (on average 2.0) 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) Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:47,290 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:47,290 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-12-28 05:52:47,292 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:47,293 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-28 05:52:47,293 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:47,299 INFO L225 Difference]: With dead ends: 20 [2021-12-28 05:52:47,299 INFO L226 Difference]: Without dead ends: 18 [2021-12-28 05:52:47,300 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 [2021-12-28 05:52:47,303 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 15 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:47,304 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-28 05:52:47,317 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-28 05:52:47,325 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 18. [2021-12-28 05:52:47,326 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 12 states have (on average 1.5833333333333333) internal successors, (19), 17 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) [2021-12-28 05:52:47,326 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2021-12-28 05:52:47,327 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 3 [2021-12-28 05:52:47,327 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:47,328 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2021-12-28 05:52:47,328 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:47,328 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2021-12-28 05:52:47,328 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 4 [2021-12-28 05:52:47,328 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:47,329 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1] [2021-12-28 05:52:47,342 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:47,537 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:52:47,538 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:47,538 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:47,539 INFO L85 PathProgramCache]: Analyzing trace with hash 29858, now seen corresponding path program 1 times [2021-12-28 05:52:47,539 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:52:47,539 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2088183316] [2021-12-28 05:52:47,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:47,540 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:52:47,540 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:52:47,541 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 05:52:47,543 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-28 05:52:47,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,593 INFO L263 TraceCheckSpWp]: Trace formula consists of 30 conjuncts, 7 conjunts are in the unsatisfiable core [2021-12-28 05:52:47,596 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:52:47,627 INFO L190 IndexEqualityManager]: detected not equals via solver [2021-12-28 05:52:47,628 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 11 [2021-12-28 05:52:47,637 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-12-28 05:52:47,653 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:47,654 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:52:47,654 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:52:47,654 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2088183316] [2021-12-28 05:52:47,655 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2088183316] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:47,655 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:47,655 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 05:52:47,655 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1002617169] [2021-12-28 05:52:47,655 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:47,657 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 05:52:47,657 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:52:47,657 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 05:52:47,658 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 05:52:47,658 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:47,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:47,696 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-12-28 05:52:47,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 05:52:47,697 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 3 [2021-12-28 05:52:47,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:47,697 INFO L225 Difference]: With dead ends: 13 [2021-12-28 05:52:47,698 INFO L226 Difference]: Without dead ends: 13 [2021-12-28 05:52:47,698 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 [2021-12-28 05:52:47,699 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 10 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 10 SdHoareTripleChecker+Valid, 9 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:47,700 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [10 Valid, 9 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:47,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-28 05:52:47,702 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-28 05:52:47,702 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 12 states have (on average 1.1666666666666667) internal successors, (14), 12 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:47,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-28 05:52:47,703 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 3 [2021-12-28 05:52:47,703 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:47,703 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-28 05:52:47,703 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 1.5) internal successors, (3), 3 states have internal predecessors, (3), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:47,704 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-28 05:52:47,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 05:52:47,704 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:47,704 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:47,720 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:47,913 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:52:47,913 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:47,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:47,914 INFO L85 PathProgramCache]: Analyzing trace with hash 1114117971, now seen corresponding path program 1 times [2021-12-28 05:52:47,915 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:52:47,915 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1765922166] [2021-12-28 05:52:47,915 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:47,916 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:52:47,916 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:52:47,917 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 05:52:47,919 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-28 05:52:47,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 05:52:47,986 INFO L263 TraceCheckSpWp]: Trace formula consists of 67 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-28 05:52:47,989 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 05:52:48,014 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 13 treesize of output 9 [2021-12-28 05:52:48,049 INFO L387 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 7 [2021-12-28 05:52:48,062 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 05:52:48,063 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-28 05:52:48,063 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-28 05:52:48,064 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1765922166] [2021-12-28 05:52:48,064 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1765922166] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 05:52:48,064 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 05:52:48,064 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 05:52:48,064 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837029658] [2021-12-28 05:52:48,065 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 05:52:48,066 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 05:52:48,066 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-28 05:52:48,067 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 05:52:48,067 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-28 05:52:48,068 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 4 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) [2021-12-28 05:52:48,137 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 05:52:48,137 INFO L93 Difference]: Finished difference Result 17 states and 18 transitions. [2021-12-28 05:52:48,138 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 05:52:48,138 INFO L78 Accepts]: Start accepts. Automaton has has 4 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 10 [2021-12-28 05:52:48,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 05:52:48,138 INFO L225 Difference]: With dead ends: 17 [2021-12-28 05:52:48,139 INFO L226 Difference]: Without dead ends: 17 [2021-12-28 05:52:48,139 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-28 05:52:48,140 INFO L933 BasicCegarLoop]: 11 mSDtfsCounter, 1 mSDsluCounter, 15 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 26 SdHoareTripleChecker+Invalid, 20 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 05:52:48,140 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 26 Invalid, 20 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 05:52:48,141 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-28 05:52:48,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 15. [2021-12-28 05:52:48,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 14 states have (on average 1.1428571428571428) internal successors, (16), 14 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 05:52:48,143 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-12-28 05:52:48,143 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 10 [2021-12-28 05:52:48,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 05:52:48,143 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-12-28 05:52:48,143 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 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) [2021-12-28 05:52:48,143 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-12-28 05:52:48,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-28 05:52:48,144 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 05:52:48,144 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 05:52:48,159 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:48,356 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:52:48,357 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 7 more)] === [2021-12-28 05:52:48,357 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 05:52:48,357 INFO L85 PathProgramCache]: Analyzing trace with hash 1261881331, now seen corresponding path program 1 times [2021-12-28 05:52:48,357 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-28 05:52:48,358 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400704174] [2021-12-28 05:52:48,358 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 05:52:48,358 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-28 05:52:48,358 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-28 05:52:48,359 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-28 05:52:48,361 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-28 05:52:48,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 05:52:48,418 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-28 05:52:48,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-28 05:52:48,460 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-28 05:52:48,460 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-28 05:52:48,461 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_LEAK (10 of 11 remaining) [2021-12-28 05:52:48,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (9 of 11 remaining) [2021-12-28 05:52:48,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (8 of 11 remaining) [2021-12-28 05:52:48,471 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATION (7 of 11 remaining) [2021-12-28 05:52:48,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (6 of 11 remaining) [2021-12-28 05:52:48,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATION (5 of 11 remaining) [2021-12-28 05:52:48,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATION (4 of 11 remaining) [2021-12-28 05:52:48,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATION (3 of 11 remaining) [2021-12-28 05:52:48,472 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATION (2 of 11 remaining) [2021-12-28 05:52:48,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATION (1 of 11 remaining) [2021-12-28 05:52:48,473 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATION (0 of 11 remaining) [2021-12-28 05:52:48,484 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-28 05:52:48,673 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-28 05:52:48,676 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1] [2021-12-28 05:52:48,678 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 05:52:48,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 05:52:48 BoogieIcfgContainer [2021-12-28 05:52:48,693 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 05:52:48,694 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 05:52:48,694 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 05:52:48,694 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 05:52:48,695 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 05:52:46" (3/4) ... [2021-12-28 05:52:48,697 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-12-28 05:52:48,698 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 05:52:48,698 INFO L158 Benchmark]: Toolchain (without parser) took 2729.88ms. Allocated memory was 48.2MB in the beginning and 73.4MB in the end (delta: 25.2MB). Free memory was 22.8MB in the beginning and 50.9MB in the end (delta: -28.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:52:48,698 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:52:48,699 INFO L158 Benchmark]: CACSL2BoogieTranslator took 408.76ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.6MB in the beginning and 37.0MB in the end (delta: -14.4MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. [2021-12-28 05:52:48,699 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.71ms. Allocated memory is still 60.8MB. Free memory was 37.0MB in the beginning and 35.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 05:52:48,700 INFO L158 Benchmark]: Boogie Preprocessor took 43.70ms. Allocated memory is still 60.8MB. Free memory was 35.1MB in the beginning and 33.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 05:52:48,700 INFO L158 Benchmark]: RCFGBuilder took 363.26ms. Allocated memory is still 60.8MB. Free memory was 33.7MB in the beginning and 35.2MB in the end (delta: -1.5MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. [2021-12-28 05:52:48,700 INFO L158 Benchmark]: TraceAbstraction took 1844.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 34.8MB in the beginning and 50.9MB in the end (delta: -16.1MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:52:48,701 INFO L158 Benchmark]: Witness Printer took 3.84ms. Allocated memory is still 73.4MB. Free memory is still 50.9MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 05:52:48,702 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 48.2MB. Free memory was 30.6MB in the beginning and 30.6MB in the end (delta: 52.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 408.76ms. Allocated memory was 48.2MB in the beginning and 60.8MB in the end (delta: 12.6MB). Free memory was 22.6MB in the beginning and 37.0MB in the end (delta: -14.4MB). Peak memory consumption was 5.8MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.71ms. Allocated memory is still 60.8MB. Free memory was 37.0MB in the beginning and 35.2MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 43.70ms. Allocated memory is still 60.8MB. Free memory was 35.1MB in the beginning and 33.7MB in the end (delta: 1.4MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 363.26ms. Allocated memory is still 60.8MB. Free memory was 33.7MB in the beginning and 35.2MB in the end (delta: -1.5MB). Peak memory consumption was 7.9MB. Max. memory is 16.1GB. * TraceAbstraction took 1844.30ms. Allocated memory was 60.8MB in the beginning and 73.4MB in the end (delta: 12.6MB). Free memory was 34.8MB in the beginning and 50.9MB in the end (delta: -16.1MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 3.84ms. Allocated memory is still 73.4MB. Free memory is still 50.9MB. There was no memory consumed. 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 - UnprovableResult [Line: 524]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 524. Possible FailurePath: [L526-L533] union { void *p0; struct { char c[2]; int p1; int p2; } str; } data; [L534] data.p0 = malloc(37U) VAL [data={13:0}, malloc(37U)={3:0}] [L535] COND FALSE !(__VERIFIER_nondet_int()) [L538] data.str.p2 = 30 VAL [data={13:0}] [L540] EXPR data.str.p2 VAL [data={13:0}, data.str.p2=30] [L540] COND FALSE !(25 > data.str.p2) [L543] return 0; [L543] return 0; VAL [\result=0] - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 534]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 536]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 538]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 25 locations, 11 error locations. Started 1 CEGAR loops. OverallTime: 1.8s, OverallIterations: 4, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 46 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 17 mSDsCounter, 10 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 41 IncrementalHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 10 mSolverCounterUnsat, 29 mSDtfsCounter, 41 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred in iteration=0, InterpolantAutomatonStates: 10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 13 ConstructedInterpolants, 0 QuantifiedInterpolants, 38 SizeOfPredicates, 5 NumberOfNonLiveVariables, 127 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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 could not prove your program: unable to determine feasibility of some traces [2021-12-28 05:52:48,741 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 Result: UNKNOWN: Overapproximated counterexample