./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i --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/array-memsafety/openbsd_cmemset-alloca-1.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 eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 19:49:48,593 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 19:49:48,595 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 19:49:48,620 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 19:49:48,624 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 19:49:48,625 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 19:49:48,628 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 19:49:48,630 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 19:49:48,633 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 19:49:48,634 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 19:49:48,635 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 19:49:48,637 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 19:49:48,637 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 19:49:48,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 19:49:48,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 19:49:48,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 19:49:48,648 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 19:49:48,649 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 19:49:48,651 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 19:49:48,654 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 19:49:48,658 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 19:49:48,659 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 19:49:48,661 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 19:49:48,661 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 19:49:48,666 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 19:49:48,669 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 19:49:48,670 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 19:49:48,670 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 19:49:48,672 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 19:49:48,672 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 19:49:48,673 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 19:49:48,674 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 19:49:48,674 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 19:49:48,675 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 19:49:48,675 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 19:49:48,676 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 19:49:48,676 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 19:49:48,676 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 19:49:48,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 19:49:48,677 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 19:49:48,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 19:49:48,679 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 19:49:48,714 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 19:49:48,715 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 19:49:48,716 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 19:49:48,716 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 19:49:48,717 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 19:49:48,717 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 19:49:48,718 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 19:49:48,718 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 19:49:48,718 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 19:49:48,719 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 19:49:48,719 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 19:49:48,720 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 19:49:48,720 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 19:49:48,720 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 19:49:48,720 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 19:49:48,720 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 19:49:48,721 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 19:49:48,721 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 19:49:48,721 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 19:49:48,721 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 19:49:48,721 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 19:49:48,722 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 19:49:48,722 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 19:49:48,722 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 19:49:48,722 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 19:49:48,722 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:49:48,723 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 19:49:48,723 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 19:49:48,723 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 19:49:48,723 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 19:49:48,723 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 19:49:48,724 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> eba94063d18105b44b9503ed48a138d00b9b850cd51aae19571aab60c15e268e [2021-12-18 19:49:48,960 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 19:49:48,990 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 19:49:48,993 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 19:49:48,995 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 19:49:48,995 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 19:49:48,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-12-18 19:49:49,058 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f38f991e/0586ca7c90dc413b9fd88940fcce712d/FLAGe92f73ef5 [2021-12-18 19:49:49,482 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 19:49:49,483 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/openbsd_cmemset-alloca-1.i [2021-12-18 19:49:49,493 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f38f991e/0586ca7c90dc413b9fd88940fcce712d/FLAGe92f73ef5 [2021-12-18 19:49:49,860 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3f38f991e/0586ca7c90dc413b9fd88940fcce712d [2021-12-18 19:49:49,863 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 19:49:49,864 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 19:49:49,865 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 19:49:49,866 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 19:49:49,874 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 19:49:49,874 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:49:49" (1/1) ... [2021-12-18 19:49:49,875 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5f2abf04 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:49, skipping insertion in model container [2021-12-18 19:49:49,876 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 07:49:49" (1/1) ... [2021-12-18 19:49:49,882 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 19:49:49,923 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 19:49:50,212 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:49:50,219 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 19:49:50,267 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 19:49:50,291 INFO L208 MainTranslator]: Completed translation [2021-12-18 19:49:50,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50 WrapperNode [2021-12-18 19:49:50,292 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 19:49:50,293 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 19:49:50,293 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 19:49:50,294 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 19:49:50,300 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,325 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,345 INFO L137 Inliner]: procedures = 116, calls = 7, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 47 [2021-12-18 19:49:50,346 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 19:49:50,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 19:49:50,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 19:49:50,347 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 19:49:50,353 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,354 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,359 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,360 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,373 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,377 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,382 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,384 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 19:49:50,386 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 19:49:50,386 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 19:49:50,386 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 19:49:50,387 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (1/1) ... [2021-12-18 19:49:50,393 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 19:49:50,403 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:49:50,449 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 19:49:50,479 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 19:49:50,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-18 19:49:50,503 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 19:49:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 19:49:50,504 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 19:49:50,504 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 19:49:50,602 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 19:49:50,616 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 19:49:50,747 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 19:49:50,753 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 19:49:50,753 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 19:49:50,755 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:50 BoogieIcfgContainer [2021-12-18 19:49:50,755 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 19:49:50,757 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 19:49:50,757 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 19:49:50,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 19:49:50,760 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 07:49:49" (1/3) ... [2021-12-18 19:49:50,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758f8eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:49:50, skipping insertion in model container [2021-12-18 19:49:50,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 07:49:50" (2/3) ... [2021-12-18 19:49:50,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@758f8eca and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 07:49:50, skipping insertion in model container [2021-12-18 19:49:50,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:50" (3/3) ... [2021-12-18 19:49:50,764 INFO L111 eAbstractionObserver]: Analyzing ICFG openbsd_cmemset-alloca-1.i [2021-12-18 19:49:50,770 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 19:49:50,771 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-18 19:49:50,812 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 19:49:50,819 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 19:49:50,819 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-18 19:49:50,831 INFO L276 IsEmpty]: Start isEmpty. Operand has 19 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 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 19:49:50,846 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 19:49:50,849 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:50,849 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:50,850 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:50,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:50,859 INFO L85 PathProgramCache]: Analyzing trace with hash 121322254, now seen corresponding path program 1 times [2021-12-18 19:49:50,868 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:50,869 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [419932817] [2021-12-18 19:49:50,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:50,870 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:50,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:51,087 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 19:49:51,088 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:51,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [419932817] [2021-12-18 19:49:51,089 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [419932817] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:51,089 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:51,090 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:49:51,091 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625666009] [2021-12-18 19:49:51,091 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:51,095 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:49:51,096 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:51,120 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:49:51,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:51,123 INFO L87 Difference]: Start difference. First operand has 19 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 18 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 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 19:49:51,193 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:51,194 INFO L93 Difference]: Finished difference Result 20 states and 23 transitions. [2021-12-18 19:49:51,195 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:49:51,196 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 8 [2021-12-18 19:49:51,197 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:51,205 INFO L225 Difference]: With dead ends: 20 [2021-12-18 19:49:51,206 INFO L226 Difference]: Without dead ends: 18 [2021-12-18 19:49:51,212 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-18 19:49:51,216 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 18 mSDsluCounter, 20 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 18 SdHoareTripleChecker+Valid, 35 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:51,217 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [18 Valid, 35 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:51,231 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2021-12-18 19:49:51,239 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2021-12-18 19:49:51,241 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 15 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 19:49:51,242 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 19 transitions. [2021-12-18 19:49:51,242 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 19 transitions. Word has length 8 [2021-12-18 19:49:51,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:51,243 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 19 transitions. [2021-12-18 19:49:51,243 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.0) internal successors, (8), 5 states have internal predecessors, (8), 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 19:49:51,243 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 19 transitions. [2021-12-18 19:49:51,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2021-12-18 19:49:51,244 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:51,244 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:51,245 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-18 19:49:51,245 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:51,248 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:51,248 INFO L85 PathProgramCache]: Analyzing trace with hash 121322255, now seen corresponding path program 1 times [2021-12-18 19:49:51,248 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:51,249 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1394325032] [2021-12-18 19:49:51,249 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:51,249 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:51,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:51,405 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 19:49:51,406 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:51,407 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1394325032] [2021-12-18 19:49:51,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1394325032] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:51,408 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:51,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:49:51,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828576665] [2021-12-18 19:49:51,408 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:51,409 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 19:49:51,410 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:51,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 19:49:51,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:49:51,411 INFO L87 Difference]: Start difference. First operand 16 states and 19 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 19:49:51,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:51,474 INFO L93 Difference]: Finished difference Result 19 states and 22 transitions. [2021-12-18 19:49:51,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 19:49:51,475 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 8 [2021-12-18 19:49:51,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:51,476 INFO L225 Difference]: With dead ends: 19 [2021-12-18 19:49:51,477 INFO L226 Difference]: Without dead ends: 19 [2021-12-18 19:49:51,477 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2021-12-18 19:49:51,483 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 30 mSDsluCounter, 34 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 30 SdHoareTripleChecker+Valid, 47 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:51,484 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [30 Valid, 47 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:51,486 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-18 19:49:51,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2021-12-18 19:49:51,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.3125) internal successors, (21), 17 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:51,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 21 transitions. [2021-12-18 19:49:51,491 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 21 transitions. Word has length 8 [2021-12-18 19:49:51,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:51,492 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 21 transitions. [2021-12-18 19:49:51,493 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 6 states have internal predecessors, (8), 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 19:49:51,493 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 21 transitions. [2021-12-18 19:49:51,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 19:49:51,494 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:51,494 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:51,494 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-18 19:49:51,495 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:51,496 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:51,496 INFO L85 PathProgramCache]: Analyzing trace with hash -533363702, now seen corresponding path program 1 times [2021-12-18 19:49:51,498 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:51,499 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464508960] [2021-12-18 19:49:51,499 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:51,500 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:51,517 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:51,560 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 19:49:51,561 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:51,561 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1464508960] [2021-12-18 19:49:51,561 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1464508960] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:51,561 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:51,561 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 19:49:51,561 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1822375940] [2021-12-18 19:49:51,561 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:51,562 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:51,562 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:51,562 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:51,562 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:51,563 INFO L87 Difference]: Start difference. First operand 18 states and 21 transitions. Second operand has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:51,590 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:51,590 INFO L93 Difference]: Finished difference Result 34 states and 37 transitions. [2021-12-18 19:49:51,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:51,591 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-18 19:49:51,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:51,591 INFO L225 Difference]: With dead ends: 34 [2021-12-18 19:49:51,592 INFO L226 Difference]: Without dead ends: 34 [2021-12-18 19:49:51,592 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 [2021-12-18 19:49:51,593 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 19 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:51,593 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 55 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:51,594 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-18 19:49:51,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 20. [2021-12-18 19:49:51,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 20 states, 18 states have (on average 1.2777777777777777) 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 19:49:51,612 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 23 transitions. [2021-12-18 19:49:51,612 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 23 transitions. Word has length 9 [2021-12-18 19:49:51,612 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:51,612 INFO L470 AbstractCegarLoop]: Abstraction has 20 states and 23 transitions. [2021-12-18 19:49:51,613 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:51,613 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 23 transitions. [2021-12-18 19:49:51,613 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2021-12-18 19:49:51,613 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:51,614 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:51,614 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-12-18 19:49:51,614 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:51,614 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:51,615 INFO L85 PathProgramCache]: Analyzing trace with hash -476105400, now seen corresponding path program 1 times [2021-12-18 19:49:51,615 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:51,615 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1736223826] [2021-12-18 19:49:51,615 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:51,615 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:51,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:51,676 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 19:49:51,677 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:51,677 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1736223826] [2021-12-18 19:49:51,677 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1736223826] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:51,677 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:51,677 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:49:51,677 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [282232671] [2021-12-18 19:49:51,678 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:51,678 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:49:51,678 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:51,679 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:49:51,679 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:51,679 INFO L87 Difference]: Start difference. First operand 20 states and 23 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:51,697 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:51,698 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2021-12-18 19:49:51,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:49:51,698 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 9 [2021-12-18 19:49:51,699 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:51,699 INFO L225 Difference]: With dead ends: 22 [2021-12-18 19:49:51,699 INFO L226 Difference]: Without dead ends: 22 [2021-12-18 19:49:51,700 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-12-18 19:49:51,701 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 21 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:51,701 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 30 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:51,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-18 19:49:51,703 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 18. [2021-12-18 19:49:51,703 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 18 states, 16 states have (on average 1.25) internal successors, (20), 17 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 19:49:51,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 20 transitions. [2021-12-18 19:49:51,704 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 20 transitions. Word has length 9 [2021-12-18 19:49:51,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:51,704 INFO L470 AbstractCegarLoop]: Abstraction has 18 states and 20 transitions. [2021-12-18 19:49:51,705 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:51,705 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 20 transitions. [2021-12-18 19:49:51,705 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 19:49:51,705 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:51,705 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:51,706 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-18 19:49:51,706 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:51,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:51,706 INFO L85 PathProgramCache]: Analyzing trace with hash 188498229, now seen corresponding path program 1 times [2021-12-18 19:49:51,707 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:51,707 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2111921605] [2021-12-18 19:49:51,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:51,707 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:51,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:51,810 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:51,811 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:51,811 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2111921605] [2021-12-18 19:49:51,811 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2111921605] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:51,811 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:51,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 19:49:51,812 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234665984] [2021-12-18 19:49:51,812 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:51,812 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-18 19:49:51,812 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:51,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-18 19:49:51,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-18 19:49:51,813 INFO L87 Difference]: Start difference. First operand 18 states and 20 transitions. Second operand has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 19:49:51,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:51,850 INFO L93 Difference]: Finished difference Result 29 states and 30 transitions. [2021-12-18 19:49:51,851 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 19:49:51,851 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 13 [2021-12-18 19:49:51,851 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:51,852 INFO L225 Difference]: With dead ends: 29 [2021-12-18 19:49:51,852 INFO L226 Difference]: Without dead ends: 29 [2021-12-18 19:49:51,852 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 19:49:51,853 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 8 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 55 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 16 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:51,854 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [8 Valid, 55 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:51,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2021-12-18 19:49:51,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 25. [2021-12-18 19:49:51,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 25 states, 23 states have (on average 1.173913043478261) internal successors, (27), 24 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 19:49:51,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 27 transitions. [2021-12-18 19:49:51,857 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 27 transitions. Word has length 13 [2021-12-18 19:49:51,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:51,857 INFO L470 AbstractCegarLoop]: Abstraction has 25 states and 27 transitions. [2021-12-18 19:49:51,858 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.6) internal successors, (13), 5 states have internal predecessors, (13), 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 19:49:51,858 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 27 transitions. [2021-12-18 19:49:51,858 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 19:49:51,858 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:51,858 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:51,859 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-12-18 19:49:51,859 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:51,859 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:51,859 INFO L85 PathProgramCache]: Analyzing trace with hash -204528781, now seen corresponding path program 1 times [2021-12-18 19:49:51,860 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:51,860 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [663339144] [2021-12-18 19:49:51,860 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:51,860 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:52,058 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 19:49:52,059 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:52,059 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [663339144] [2021-12-18 19:49:52,059 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [663339144] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:49:52,060 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1994783573] [2021-12-18 19:49:52,060 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:52,060 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:49:52,060 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:49:52,067 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 19:49:52,092 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 19:49:52,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:52,155 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 36 conjunts are in the unsatisfiable core [2021-12-18 19:49:52,160 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:52,250 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 19:49:52,513 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 19:49:52,513 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:52,845 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 19:49:52,845 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1994783573] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:52,845 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:49:52,845 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9, 9] total 24 [2021-12-18 19:49:52,846 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1818067523] [2021-12-18 19:49:52,846 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:52,847 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 25 states [2021-12-18 19:49:52,847 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:52,848 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2021-12-18 19:49:52,849 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=86, Invalid=514, Unknown=0, NotChecked=0, Total=600 [2021-12-18 19:49:52,849 INFO L87 Difference]: Start difference. First operand 25 states and 27 transitions. Second operand has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 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 19:49:53,097 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:53,098 INFO L93 Difference]: Finished difference Result 31 states and 34 transitions. [2021-12-18 19:49:53,098 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-12-18 19:49:53,098 INFO L78 Accepts]: Start accepts. Automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 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 13 [2021-12-18 19:49:53,098 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:53,099 INFO L225 Difference]: With dead ends: 31 [2021-12-18 19:49:53,099 INFO L226 Difference]: Without dead ends: 31 [2021-12-18 19:49:53,100 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 159 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=167, Invalid=889, Unknown=0, NotChecked=0, Total=1056 [2021-12-18 19:49:53,100 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 26 mSDsluCounter, 93 mSDsCounter, 0 mSdLazyCounter, 100 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 26 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 117 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 100 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:53,101 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [26 Valid, 105 Invalid, 117 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 100 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-12-18 19:49:53,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2021-12-18 19:49:53,103 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 30. [2021-12-18 19:49:53,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 30 states, 28 states have (on average 1.1785714285714286) internal successors, (33), 29 states have internal predecessors, (33), 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 19:49:53,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2021-12-18 19:49:53,105 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 13 [2021-12-18 19:49:53,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:53,105 INFO L470 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2021-12-18 19:49:53,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 25 states, 24 states have (on average 1.3333333333333333) internal successors, (32), 25 states have internal predecessors, (32), 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 19:49:53,105 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2021-12-18 19:49:53,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2021-12-18 19:49:53,106 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:53,106 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:53,132 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 19:49:53,307 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable5 [2021-12-18 19:49:53,307 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:53,308 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:53,308 INFO L85 PathProgramCache]: Analyzing trace with hash 1548436090, now seen corresponding path program 1 times [2021-12-18 19:49:53,308 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:53,308 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [450756830] [2021-12-18 19:49:53,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:53,308 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:53,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:53,363 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 19:49:53,363 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:53,363 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [450756830] [2021-12-18 19:49:53,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [450756830] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 19:49:53,364 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 19:49:53,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 19:49:53,364 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2043787453] [2021-12-18 19:49:53,364 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 19:49:53,365 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 19:49:53,365 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:53,365 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 19:49:53,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:53,366 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2021-12-18 19:49:53,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:53,374 INFO L93 Difference]: Finished difference Result 29 states and 32 transitions. [2021-12-18 19:49:53,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 19:49:53,375 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) Word has length 14 [2021-12-18 19:49:53,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:53,376 INFO L225 Difference]: With dead ends: 29 [2021-12-18 19:49:53,376 INFO L226 Difference]: Without dead ends: 19 [2021-12-18 19:49:53,376 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 19:49:53,377 INFO L933 BasicCegarLoop]: 14 mSDtfsCounter, 4 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 26 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 19:49:53,377 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 26 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 19:49:53,378 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-18 19:49:53,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-18 19:49:53,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 18 states have (on average 1.1111111111111112) 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 19:49:53,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-18 19:49:53,381 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 14 [2021-12-18 19:49:53,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:53,382 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-18 19:49:53,382 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 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) [2021-12-18 19:49:53,382 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-18 19:49:53,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-18 19:49:53,383 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:53,383 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:53,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-18 19:49:53,384 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:53,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:53,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1854015663, now seen corresponding path program 2 times [2021-12-18 19:49:53,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:53,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [860983777] [2021-12-18 19:49:53,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:53,386 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:53,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:53,733 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:53,733 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:53,733 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [860983777] [2021-12-18 19:49:53,733 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [860983777] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:49:53,734 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1945402814] [2021-12-18 19:49:53,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 19:49:53,734 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:49:53,734 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:49:53,735 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 19:49:53,737 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 19:49:53,818 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 19:49:53,818 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:53,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 53 conjunts are in the unsatisfiable core [2021-12-18 19:49:53,822 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:53,841 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 19:49:54,209 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:54,209 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:54,679 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:54,680 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1945402814] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:54,680 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:49:54,680 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 11, 11] total 30 [2021-12-18 19:49:54,681 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615259020] [2021-12-18 19:49:54,681 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:54,681 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 31 states [2021-12-18 19:49:54,682 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:54,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2021-12-18 19:49:54,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=817, Unknown=0, NotChecked=0, Total=930 [2021-12-18 19:49:54,688 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 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 19:49:55,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:55,474 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2021-12-18 19:49:55,474 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2021-12-18 19:49:55,474 INFO L78 Accepts]: Start accepts. Automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-18 19:49:55,475 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:55,475 INFO L225 Difference]: With dead ends: 34 [2021-12-18 19:49:55,475 INFO L226 Difference]: Without dead ends: 34 [2021-12-18 19:49:55,476 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 387 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=250, Invalid=1730, Unknown=0, NotChecked=0, Total=1980 [2021-12-18 19:49:55,476 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 19 mSDsluCounter, 91 mSDsCounter, 0 mSdLazyCounter, 205 mSolverCounterSat, 37 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 19 SdHoareTripleChecker+Valid, 101 SdHoareTripleChecker+Invalid, 242 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 37 IncrementalHoareTripleChecker+Valid, 205 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:55,477 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [19 Valid, 101 Invalid, 242 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [37 Valid, 205 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-12-18 19:49:55,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-12-18 19:49:55,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-12-18 19:49:55,479 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 33 states have (on average 1.0606060606060606) internal successors, (35), 33 states have internal predecessors, (35), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 19:49:55,479 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 35 transitions. [2021-12-18 19:49:55,479 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 35 transitions. Word has length 18 [2021-12-18 19:49:55,479 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:55,480 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 35 transitions. [2021-12-18 19:49:55,480 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 31 states, 30 states have (on average 1.4666666666666666) internal successors, (44), 31 states have internal predecessors, (44), 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 19:49:55,480 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 35 transitions. [2021-12-18 19:49:55,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-12-18 19:49:55,480 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 19:49:55,481 INFO L514 BasicCegarLoop]: trace histogram [6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:55,508 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 19:49:55,687 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable7 [2021-12-18 19:49:55,688 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 19:49:55,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 19:49:55,688 INFO L85 PathProgramCache]: Analyzing trace with hash -1162598157, now seen corresponding path program 3 times [2021-12-18 19:49:55,688 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-18 19:49:55,688 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1400437055] [2021-12-18 19:49:55,688 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 19:49:55,688 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-18 19:49:55,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 19:49:56,091 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 21 proven. 39 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:56,091 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-18 19:49:56,091 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1400437055] [2021-12-18 19:49:56,091 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1400437055] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-18 19:49:56,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [180946081] [2021-12-18 19:49:56,092 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-12-18 19:49:56,092 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:49:56,092 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 19:49:56,093 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-12-18 19:49:56,099 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-12-18 19:49:56,251 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 6 check-sat command(s) [2021-12-18 19:49:56,252 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-12-18 19:49:56,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 176 conjuncts, 83 conjunts are in the unsatisfiable core [2021-12-18 19:49:56,262 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 19:49:56,276 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 19:49:56,882 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:56,882 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 19:49:57,730 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 19:49:57,731 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [180946081] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 19:49:57,731 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-18 19:49:57,731 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17, 16, 16] total 44 [2021-12-18 19:49:57,732 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [488265725] [2021-12-18 19:49:57,732 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-18 19:49:57,732 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 45 states [2021-12-18 19:49:57,732 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-18 19:49:57,733 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 45 interpolants. [2021-12-18 19:49:57,734 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=232, Invalid=1748, Unknown=0, NotChecked=0, Total=1980 [2021-12-18 19:49:57,734 INFO L87 Difference]: Start difference. First operand 34 states and 35 transitions. Second operand has 45 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 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 19:49:58,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 19:49:58,854 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2021-12-18 19:49:58,855 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-12-18 19:49:58,855 INFO L78 Accepts]: Start accepts. Automaton has has 45 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 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 33 [2021-12-18 19:49:58,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 19:49:58,855 INFO L225 Difference]: With dead ends: 39 [2021-12-18 19:49:58,855 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 19:49:58,857 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 107 GetRequests, 37 SyntacticMatches, 1 SemanticMatches, 69 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1212 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=587, Invalid=4383, Unknown=0, NotChecked=0, Total=4970 [2021-12-18 19:49:58,858 INFO L933 BasicCegarLoop]: 12 mSDtfsCounter, 21 mSDsluCounter, 172 mSDsCounter, 0 mSdLazyCounter, 482 mSolverCounterSat, 48 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 184 SdHoareTripleChecker+Invalid, 530 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 48 IncrementalHoareTripleChecker+Valid, 482 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-12-18 19:49:58,858 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [21 Valid, 184 Invalid, 530 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [48 Valid, 482 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-12-18 19:49:58,858 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 19:49:58,859 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 19:49:58,859 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 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 19:49:58,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 19:49:58,859 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2021-12-18 19:49:58,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 19:49:58,859 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 19:49:58,859 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 45 states, 44 states have (on average 2.0) internal successors, (88), 45 states have internal predecessors, (88), 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 19:49:58,859 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 19:49:58,859 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 19:49:58,861 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (2 of 3 remaining) [2021-12-18 19:49:58,862 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (1 of 3 remaining) [2021-12-18 19:49:58,862 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-12-18 19:49:58,890 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Forceful destruction successful, exit code 0 [2021-12-18 19:49:59,062 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-18 19:49:59,065 INFO L732 BasicCegarLoop]: Path program histogram: [3, 1, 1, 1, 1, 1, 1] [2021-12-18 19:49:59,066 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 19:49:59,068 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 07:49:59 BoogieIcfgContainer [2021-12-18 19:49:59,068 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 19:49:59,069 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 19:49:59,069 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 19:49:59,069 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 19:49:59,069 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 07:49:50" (3/4) ... [2021-12-18 19:49:59,071 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-18 19:49:59,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 13 nodes and edges [2021-12-18 19:49:59,078 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 5 nodes and edges [2021-12-18 19:49:59,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-18 19:49:59,079 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 1 nodes and edges [2021-12-18 19:49:59,100 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 19:49:59,100 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 19:49:59,101 INFO L158 Benchmark]: Toolchain (without parser) took 9236.91ms. Allocated memory was 90.2MB in the beginning and 136.3MB in the end (delta: 46.1MB). Free memory was 57.8MB in the beginning and 47.2MB in the end (delta: 10.6MB). Peak memory consumption was 56.1MB. Max. memory is 16.1GB. [2021-12-18 19:49:59,101 INFO L158 Benchmark]: CDTParser took 0.20ms. Allocated memory is still 90.2MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:49:59,101 INFO L158 Benchmark]: CACSL2BoogieTranslator took 426.83ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 57.8MB in the beginning and 83.6MB in the end (delta: -25.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 19:49:59,102 INFO L158 Benchmark]: Boogie Procedure Inliner took 52.90ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 19:49:59,102 INFO L158 Benchmark]: Boogie Preprocessor took 38.45ms. Allocated memory is still 113.2MB. Free memory was 81.5MB in the beginning and 80.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 19:49:59,102 INFO L158 Benchmark]: RCFGBuilder took 369.82ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 70.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 19:49:59,103 INFO L158 Benchmark]: TraceAbstraction took 8311.36ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 70.0MB in the beginning and 50.2MB in the end (delta: 19.8MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. [2021-12-18 19:49:59,103 INFO L158 Benchmark]: Witness Printer took 31.56ms. Allocated memory is still 136.3MB. Free memory was 50.2MB in the beginning and 47.2MB in the end (delta: 2.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 19:49:59,104 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 90.2MB. Free memory was 46.7MB in the beginning and 46.6MB in the end (delta: 83.9kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 426.83ms. Allocated memory was 90.2MB in the beginning and 113.2MB in the end (delta: 23.1MB). Free memory was 57.8MB in the beginning and 83.6MB in the end (delta: -25.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 52.90ms. Allocated memory is still 113.2MB. Free memory was 83.1MB in the beginning and 81.5MB in the end (delta: 1.6MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 38.45ms. Allocated memory is still 113.2MB. Free memory was 81.5MB in the beginning and 80.3MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 369.82ms. Allocated memory is still 113.2MB. Free memory was 80.3MB in the beginning and 70.5MB in the end (delta: 9.8MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 8311.36ms. Allocated memory was 113.2MB in the beginning and 136.3MB in the end (delta: 23.1MB). Free memory was 70.0MB in the beginning and 50.2MB in the end (delta: 19.8MB). Peak memory consumption was 46.4MB. Max. memory is 16.1GB. * Witness Printer took 31.56ms. Allocated memory is still 136.3MB. Free memory was 50.2MB in the beginning and 47.2MB in the end (delta: 2.9MB). 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 - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 518]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 523]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 8.3s, OverallIterations: 9, TraceHistogramMax: 6, PathProgramHistogramMax: 3, EmptinessCheckTime: 0.0s, AutomataDifference: 2.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 166 SdHoareTripleChecker+Valid, 0.6s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 166 mSDsluCounter, 638 SdHoareTripleChecker+Invalid, 0.5s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 516 mSDsCounter, 112 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 883 IncrementalHoareTripleChecker+Invalid, 995 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 112 mSolverCounterUnsat, 122 mSDtfsCounter, 883 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 244 GetRequests, 73 SyntacticMatches, 2 SemanticMatches, 169 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1761 ImplicationChecksByTransitivity, 3.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=34occurred in iteration=8, InterpolantAutomatonStates: 92, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 26 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.4s SatisfiabilityAnalysisTime, 4.3s InterpolantComputationTime, 189 NumberOfCodeBlocks, 189 NumberOfCodeBlocksAsserted, 18 NumberOfCheckSat, 238 ConstructedInterpolants, 0 QuantifiedInterpolants, 3182 SizeOfPredicates, 49 NumberOfNonLiveVariables, 374 ConjunctsInSsa, 172 ConjunctsInUnsatCore, 15 InterpolantComputations, 6 PerfectInterpolantSequences, 23/215 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 - AllSpecificationsHoldResult: All specifications hold 3 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-18 19:49:59,134 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: TRUE