./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash ae33a6a64877fc5c824e4d2dbc13817f946c171e566de8189cdbc86c749355b6 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 22:33:07,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 22:33:07,422 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 22:33:07,458 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 22:33:07,458 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 22:33:07,461 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 22:33:07,463 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 22:33:07,468 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 22:33:07,470 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 22:33:07,474 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 22:33:07,474 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 22:33:07,476 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 22:33:07,476 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 22:33:07,478 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 22:33:07,479 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 22:33:07,483 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 22:33:07,484 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 22:33:07,485 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 22:33:07,488 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 22:33:07,493 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 22:33:07,494 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 22:33:07,495 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 22:33:07,497 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 22:33:07,497 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 22:33:07,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 22:33:07,504 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 22:33:07,504 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 22:33:07,505 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 22:33:07,506 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 22:33:07,506 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 22:33:07,507 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 22:33:07,508 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 22:33:07,509 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 22:33:07,510 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 22:33:07,511 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 22:33:07,511 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 22:33:07,512 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 22:33:07,513 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 22:33:07,513 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 22:33:07,514 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 22:33:07,514 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 22:33:07,516 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 22:33:07,546 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 22:33:07,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 22:33:07,547 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 22:33:07,548 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 22:33:07,548 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 22:33:07,548 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 22:33:07,549 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 22:33:07,549 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 22:33:07,550 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 22:33:07,550 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 22:33:07,550 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 22:33:07,551 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 22:33:07,551 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 22:33:07,551 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 22:33:07,551 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 22:33:07,551 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 22:33:07,552 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 22:33:07,552 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 22:33:07,552 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 22:33:07,552 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 22:33:07,552 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 22:33:07,553 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 22:33:07,553 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 22:33:07,553 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 22:33:07,553 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 22:33:07,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:33:07,554 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 22:33:07,555 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 22:33:07,555 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 22:33:07,555 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 22:33:07,555 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 22:33:07,555 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> ae33a6a64877fc5c824e4d2dbc13817f946c171e566de8189cdbc86c749355b6 [2021-12-18 22:33:07,766 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 22:33:07,782 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 22:33:07,784 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 22:33:07,785 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 22:33:07,786 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 22:33:07,787 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2021-12-18 22:33:07,848 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8502df65/a956ad54b9404ec3b97501cc8719bcc3/FLAG9917f94c3 [2021-12-18 22:33:08,201 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 22:33:08,201 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers1-1.c [2021-12-18 22:33:08,206 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8502df65/a956ad54b9404ec3b97501cc8719bcc3/FLAG9917f94c3 [2021-12-18 22:33:08,641 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f8502df65/a956ad54b9404ec3b97501cc8719bcc3 [2021-12-18 22:33:08,643 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 22:33:08,644 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 22:33:08,647 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:08,647 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 22:33:08,650 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 22:33:08,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,651 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18bdc3fa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08, skipping insertion in model container [2021-12-18 22:33:08,651 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,657 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 22:33:08,667 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 22:33:08,808 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:08,815 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 22:33:08,825 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:08,835 INFO L208 MainTranslator]: Completed translation [2021-12-18 22:33:08,836 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08 WrapperNode [2021-12-18 22:33:08,836 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:08,837 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 22:33:08,837 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 22:33:08,837 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 22:33:08,843 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,848 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,863 INFO L137 Inliner]: procedures = 12, calls = 13, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 43 [2021-12-18 22:33:08,863 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 22:33:08,864 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 22:33:08,864 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 22:33:08,864 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 22:33:08,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,871 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,871 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,874 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,877 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,877 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,879 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 22:33:08,879 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 22:33:08,880 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 22:33:08,880 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 22:33:08,880 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (1/1) ... [2021-12-18 22:33:08,888 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:33:08,898 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:08,908 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-18 22:33:08,931 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-18 22:33:08,951 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 22:33:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 22:33:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 22:33:08,952 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 22:33:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-12-18 22:33:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-12-18 22:33:08,952 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 22:33:08,953 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 22:33:09,002 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 22:33:09,004 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 22:33:09,098 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 22:33:09,104 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 22:33:09,104 INFO L301 CfgBuilder]: Removed 2 assume(true) statements. [2021-12-18 22:33:09,106 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:09 BoogieIcfgContainer [2021-12-18 22:33:09,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 22:33:09,120 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 22:33:09,120 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 22:33:09,123 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 22:33:09,123 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:33:08" (1/3) ... [2021-12-18 22:33:09,124 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1551d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:33:09, skipping insertion in model container [2021-12-18 22:33:09,124 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:08" (2/3) ... [2021-12-18 22:33:09,125 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7f1551d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:33:09, skipping insertion in model container [2021-12-18 22:33:09,125 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:09" (3/3) ... [2021-12-18 22:33:09,126 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers1-1.c [2021-12-18 22:33:09,130 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 22:33:09,138 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-18 22:33:09,174 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 22:33:09,192 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 22:33:09,192 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-18 22:33:09,203 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:09,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-18 22:33:09,208 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:09,209 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-18 22:33:09,209 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-18 22:33:09,215 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:09,215 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-12-18 22:33:09,223 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:09,224 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1016556559] [2021-12-18 22:33:09,224 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:09,225 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:09,299 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:09,344 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:09,344 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:09,345 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1016556559] [2021-12-18 22:33:09,345 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1016556559] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:09,346 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:09,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:33:09,347 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [239374758] [2021-12-18 22:33:09,348 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:09,351 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:09,351 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:09,373 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:09,373 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:09,375 INFO L87 Difference]: Start difference. First operand has 20 states, 14 states have (on average 1.6428571428571428) internal successors, (23), 19 states have internal predecessors, (23), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:09,400 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:09,401 INFO L93 Difference]: Finished difference Result 19 states and 20 transitions. [2021-12-18 22:33:09,402 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:09,403 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-18 22:33:09,403 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:09,408 INFO L225 Difference]: With dead ends: 19 [2021-12-18 22:33:09,408 INFO L226 Difference]: Without dead ends: 17 [2021-12-18 22:33:09,409 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:09,412 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 4 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 25 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:09,413 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 25 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:09,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-18 22:33:09,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-18 22:33:09,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:09,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2021-12-18 22:33:09,434 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 4 [2021-12-18 22:33:09,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:09,435 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2021-12-18 22:33:09,435 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:09,435 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2021-12-18 22:33:09,435 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-18 22:33:09,436 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:09,436 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-18 22:33:09,436 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 22:33:09,436 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-18 22:33:09,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:09,437 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-12-18 22:33:09,438 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:09,438 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [613242557] [2021-12-18 22:33:09,438 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:09,438 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:09,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:09,483 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:09,484 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:09,484 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [613242557] [2021-12-18 22:33:09,484 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [613242557] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:09,485 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:09,485 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:33:09,485 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513675145] [2021-12-18 22:33:09,485 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:09,487 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:09,487 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:09,487 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:09,488 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:09,488 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:09,506 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:09,506 INFO L93 Difference]: Finished difference Result 20 states and 21 transitions. [2021-12-18 22:33:09,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:09,507 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-18 22:33:09,507 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:09,507 INFO L225 Difference]: With dead ends: 20 [2021-12-18 22:33:09,508 INFO L226 Difference]: Without dead ends: 20 [2021-12-18 22:33:09,508 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:09,509 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 1 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 23 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:09,510 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 23 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:09,511 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2021-12-18 22:33:09,513 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2021-12-18 22:33:09,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 15 states have (on average 1.3333333333333333) internal successors, (20), 18 states have internal predecessors, (20), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:09,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-18 22:33:09,514 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 4 [2021-12-18 22:33:09,514 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:09,514 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-18 22:33:09,515 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:09,515 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-18 22:33:09,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-18 22:33:09,515 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:09,516 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-12-18 22:33:09,516 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 22:33:09,516 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-18 22:33:09,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:09,517 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2021-12-18 22:33:09,517 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:09,518 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1975371515] [2021-12-18 22:33:09,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:09,518 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:09,630 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:09,632 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1975371515] [2021-12-18 22:33:09,633 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1975371515] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:09,633 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [237335058] [2021-12-18 22:33:09,633 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:09,634 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:09,634 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:09,639 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:09,655 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-18 22:33:09,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:09,700 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 13 conjunts are in the unsatisfiable core [2021-12-18 22:33:09,704 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:09,769 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-12-18 22:33:09,869 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:09,869 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:09,946 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:09,947 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [237335058] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:09,947 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:09,947 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 8 [2021-12-18 22:33:09,950 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [961446305] [2021-12-18 22:33:09,951 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:09,951 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 22:33:09,951 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:09,952 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 22:33:09,952 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2021-12-18 22:33:09,953 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:10,030 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2021-12-18 22:33:10,030 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 22:33:10,031 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-18 22:33:10,031 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:10,031 INFO L225 Difference]: With dead ends: 26 [2021-12-18 22:33:10,031 INFO L226 Difference]: Without dead ends: 26 [2021-12-18 22:33:10,032 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2021-12-18 22:33:10,033 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 27 mSDsluCounter, 24 mSDsCounter, 0 mSdLazyCounter, 43 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 34 SdHoareTripleChecker+Invalid, 56 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 43 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:10,034 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 34 Invalid, 56 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 43 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:10,034 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2021-12-18 22:33:10,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2021-12-18 22:33:10,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 23 states have (on average 1.173913043478261) internal successors, (27), 25 states have internal predecessors, (27), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,037 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-12-18 22:33:10,037 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 7 [2021-12-18 22:33:10,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:10,038 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-12-18 22:33:10,038 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.375) internal successors, (19), 9 states have internal predecessors, (19), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,038 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-12-18 22:33:10,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 22:33:10,039 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:10,039 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:10,067 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:10,255 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:10,256 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-18 22:33:10,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:10,256 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139286, now seen corresponding path program 1 times [2021-12-18 22:33:10,257 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:10,257 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1878838179] [2021-12-18 22:33:10,257 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:10,257 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:10,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:10,407 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2021-12-18 22:33:10,408 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:10,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1878838179] [2021-12-18 22:33:10,409 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1878838179] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:10,409 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:10,409 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 22:33:10,409 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2121683705] [2021-12-18 22:33:10,411 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:10,412 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 22:33:10,412 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:10,413 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 22:33:10,415 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:33:10,416 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,454 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:10,455 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2021-12-18 22:33:10,455 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 22:33:10,455 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 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 19 [2021-12-18 22:33:10,456 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:10,458 INFO L225 Difference]: With dead ends: 31 [2021-12-18 22:33:10,458 INFO L226 Difference]: Without dead ends: 31 [2021-12-18 22:33:10,459 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:33:10,470 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 17 mSDsluCounter, 13 mSDsCounter, 0 mSdLazyCounter, 29 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 22 SdHoareTripleChecker+Invalid, 31 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 29 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:10,471 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 22 Invalid, 31 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 29 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:10,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-18 22:33:10,478 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2021-12-18 22:33:10,478 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 25 states have (on average 1.2) internal successors, (30), 27 states have internal predecessors, (30), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,480 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2021-12-18 22:33:10,481 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 19 [2021-12-18 22:33:10,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:10,482 INFO L470 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2021-12-18 22:33:10,482 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 5 states have internal predecessors, (10), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,482 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2021-12-18 22:33:10,483 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2021-12-18 22:33:10,483 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:10,483 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:10,483 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 22:33:10,484 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-18 22:33:10,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:10,485 INFO L85 PathProgramCache]: Analyzing trace with hash -2129139287, now seen corresponding path program 1 times [2021-12-18 22:33:10,485 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:10,486 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [313513505] [2021-12-18 22:33:10,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:10,486 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:10,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:10,561 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:10,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 22:33:10,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [313513505] [2021-12-18 22:33:10,562 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [313513505] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 22:33:10,562 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [809009447] [2021-12-18 22:33:10,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:10,562 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:10,563 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:10,568 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 22:33:10,578 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-18 22:33:10,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:10,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 100 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-18 22:33:10,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:10,672 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:10,673 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:10,768 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:10,768 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [809009447] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:10,768 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 22:33:10,769 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-18 22:33:10,769 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195819088] [2021-12-18 22:33:10,769 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:10,769 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-18 22:33:10,769 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 22:33:10,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-18 22:33:10,770 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-18 22:33:10,770 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,822 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:10,822 INFO L93 Difference]: Finished difference Result 46 states and 48 transitions. [2021-12-18 22:33:10,824 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-18 22:33:10,824 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 19 [2021-12-18 22:33:10,824 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:10,825 INFO L225 Difference]: With dead ends: 46 [2021-12-18 22:33:10,825 INFO L226 Difference]: Without dead ends: 46 [2021-12-18 22:33:10,826 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-18 22:33:10,826 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 20 mSDsluCounter, 60 mSDsCounter, 0 mSdLazyCounter, 36 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 44 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 36 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:10,827 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 44 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 36 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:10,828 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-12-18 22:33:10,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-12-18 22:33:10,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 43 states have (on average 1.1162790697674418) internal successors, (48), 45 states have internal predecessors, (48), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 48 transitions. [2021-12-18 22:33:10,844 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 48 transitions. Word has length 19 [2021-12-18 22:33:10,844 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:10,845 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 48 transitions. [2021-12-18 22:33:10,845 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.8461538461538463) internal successors, (37), 13 states have internal predecessors, (37), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 22:33:10,845 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 48 transitions. [2021-12-18 22:33:10,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2021-12-18 22:33:10,846 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:10,846 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:10,877 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-18 22:33:11,055 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 22:33:11,056 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-18 22:33:11,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:11,056 INFO L85 PathProgramCache]: Analyzing trace with hash 1224069289, now seen corresponding path program 2 times [2021-12-18 22:33:11,056 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 22:33:11,056 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [935547678] [2021-12-18 22:33:11,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:11,057 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 22:33:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 22:33:11,093 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-18 22:33:11,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 22:33:11,140 INFO L133 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-12-18 22:33:11,140 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-18 22:33:11,141 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (4 of 5 remaining) [2021-12-18 22:33:11,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (3 of 5 remaining) [2021-12-18 22:33:11,142 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATION (2 of 5 remaining) [2021-12-18 22:33:11,143 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATION (1 of 5 remaining) [2021-12-18 22:33:11,143 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2021-12-18 22:33:11,143 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-18 22:33:11,146 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-12-18 22:33:11,148 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 22:33:11,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:33:11 BoogieIcfgContainer [2021-12-18 22:33:11,177 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 22:33:11,177 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 22:33:11,178 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 22:33:11,178 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 22:33:11,178 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:09" (3/4) ... [2021-12-18 22:33:11,180 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-18 22:33:11,215 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 22:33:11,215 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 22:33:11,216 INFO L158 Benchmark]: Toolchain (without parser) took 2572.00ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 56.0MB in the beginning and 79.0MB in the end (delta: -23.0MB). Peak memory consumption was 183.9kB. Max. memory is 16.1GB. [2021-12-18 22:33:11,216 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:11,217 INFO L158 Benchmark]: CACSL2BoogieTranslator took 189.22ms. Allocated memory is still 88.1MB. Free memory was 55.7MB in the beginning and 65.3MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 22:33:11,217 INFO L158 Benchmark]: Boogie Procedure Inliner took 26.08ms. Allocated memory is still 88.1MB. Free memory was 65.3MB in the beginning and 63.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:11,217 INFO L158 Benchmark]: Boogie Preprocessor took 15.24ms. Allocated memory is still 88.1MB. Free memory was 63.7MB in the beginning and 62.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:11,217 INFO L158 Benchmark]: RCFGBuilder took 226.78ms. Allocated memory is still 88.1MB. Free memory was 62.4MB in the beginning and 52.9MB in the end (delta: 9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-12-18 22:33:11,218 INFO L158 Benchmark]: TraceAbstraction took 2056.99ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 52.4MB in the beginning and 82.0MB in the end (delta: -29.6MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:11,218 INFO L158 Benchmark]: Witness Printer took 38.15ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 79.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-18 22:33:11,219 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 88.1MB. Free memory is still 43.7MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 189.22ms. Allocated memory is still 88.1MB. Free memory was 55.7MB in the beginning and 65.3MB in the end (delta: -9.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 26.08ms. Allocated memory is still 88.1MB. Free memory was 65.3MB in the beginning and 63.7MB in the end (delta: 1.6MB). There was no memory consumed. Max. memory is 16.1GB. * Boogie Preprocessor took 15.24ms. Allocated memory is still 88.1MB. Free memory was 63.7MB in the beginning and 62.7MB in the end (delta: 1.0MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 226.78ms. Allocated memory is still 88.1MB. Free memory was 62.4MB in the beginning and 52.9MB in the end (delta: 9.5MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * TraceAbstraction took 2056.99ms. Allocated memory was 88.1MB in the beginning and 111.1MB in the end (delta: 23.1MB). Free memory was 52.4MB in the beginning and 82.0MB in the end (delta: -29.6MB). There was no memory consumed. Max. memory is 16.1GB. * Witness Printer took 38.15ms. Allocated memory is still 111.1MB. Free memory was 82.0MB in the beginning and 79.0MB in the end (delta: 3.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 22]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L19] CALL, EXPR getNumbers() [L8] int *array = alloca(10 * sizeof(int)); [L10] int i = 0; VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=0] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=1] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=2] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=3] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=4] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=5] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=6] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=7] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=8] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L10] COND TRUE i < 10 VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L11] array[i] = i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=9] [L10] ++i VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=10] [L10] COND FALSE !(i < 10) VAL [alloca(10 * sizeof(int))={11:0}, array={11:0}, i=10] [L14] return array; [L19] RET, EXPR getNumbers() [L19] int *numbers = getNumbers(); [L21] int i = 0; VAL [i=0, numbers={11:0}] [L21] COND TRUE i < 10 [L22] numbers + i - UnprovableResult [Line: 11]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 11]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 22]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 17]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 20 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 6, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 69 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 69 mSDsluCounter, 178 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 113 mSDsCounter, 24 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 129 IncrementalHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 24 mSolverCounterUnsat, 65 mSDtfsCounter, 129 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 70 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=5, InterpolantAutomatonStates: 30, 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 116 NumberOfCodeBlocks, 116 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 96 ConstructedInterpolants, 0 QuantifiedInterpolants, 589 SizeOfPredicates, 2 NumberOfNonLiveVariables, 153 ConjunctsInSsa, 19 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 22/94 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-18 22:33:11,262 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)