./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/getNumbers3.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version ae007674 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/memsafety-ext3/getNumbers3.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash c522d46e2ef8c6f97d600bd7187aa9b442df29a1c9828e86387b1c78c18556ba --- Real Ultimate output --- This is Ultimate 0.2.2-dev-ae00767 [2021-12-28 06:06:29,671 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-28 06:06:29,674 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-28 06:06:29,717 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-28 06:06:29,717 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-28 06:06:29,720 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-28 06:06:29,722 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-28 06:06:29,725 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-28 06:06:29,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-28 06:06:29,730 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-28 06:06:29,731 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-28 06:06:29,734 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-28 06:06:29,735 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-28 06:06:29,737 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-28 06:06:29,738 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-28 06:06:29,740 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-28 06:06:29,741 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-28 06:06:29,741 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-28 06:06:29,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-28 06:06:29,747 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-28 06:06:29,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-28 06:06:29,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-28 06:06:29,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-28 06:06:29,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-28 06:06:29,756 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-28 06:06:29,757 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-28 06:06:29,757 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-28 06:06:29,758 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-28 06:06:29,759 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-28 06:06:29,759 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-28 06:06:29,759 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-28 06:06:29,760 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-28 06:06:29,761 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-28 06:06:29,761 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-28 06:06:29,762 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-28 06:06:29,763 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-28 06:06:29,763 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-28 06:06:29,763 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-28 06:06:29,764 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-28 06:06:29,765 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-28 06:06:29,765 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-28 06:06:29,766 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-28 06:06:29,796 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-28 06:06:29,796 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-28 06:06:29,797 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-28 06:06:29,797 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-28 06:06:29,798 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-28 06:06:29,798 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-28 06:06:29,799 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-28 06:06:29,799 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-28 06:06:29,800 INFO L138 SettingsManager]: * Use SBE=true [2021-12-28 06:06:29,800 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-28 06:06:29,800 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-28 06:06:29,801 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-28 06:06:29,801 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-28 06:06:29,801 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-28 06:06:29,801 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-28 06:06:29,801 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-28 06:06:29,801 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-28 06:06:29,802 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-28 06:06:29,802 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-28 06:06:29,802 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-28 06:06:29,802 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-28 06:06:29,802 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-28 06:06:29,802 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-28 06:06:29,802 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-28 06:06:29,803 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-28 06:06:29,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 06:06:29,803 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-28 06:06:29,803 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-28 06:06:29,803 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-28 06:06:29,803 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-28 06:06:29,804 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c522d46e2ef8c6f97d600bd7187aa9b442df29a1c9828e86387b1c78c18556ba [2021-12-28 06:06:30,106 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-28 06:06:30,124 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-28 06:06:30,126 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-28 06:06:30,127 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-28 06:06:30,128 INFO L275 PluginConnector]: CDTParser initialized [2021-12-28 06:06:30,129 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2021-12-28 06:06:30,172 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a4d7d7c/e868fc748e25462395c750b47d1e8bc0/FLAGad5e030e7 [2021-12-28 06:06:30,509 INFO L306 CDTParser]: Found 1 translation units. [2021-12-28 06:06:30,509 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/getNumbers3.c [2021-12-28 06:06:30,513 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a4d7d7c/e868fc748e25462395c750b47d1e8bc0/FLAGad5e030e7 [2021-12-28 06:06:30,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/99a4d7d7c/e868fc748e25462395c750b47d1e8bc0 [2021-12-28 06:06:30,524 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-28 06:06:30,525 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-28 06:06:30,526 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-28 06:06:30,526 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-28 06:06:30,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-28 06:06:30,529 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,530 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1eae3664 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30, skipping insertion in model container [2021-12-28 06:06:30,530 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,537 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-28 06:06:30,546 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-28 06:06:30,633 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 06:06:30,646 INFO L203 MainTranslator]: Completed pre-run [2021-12-28 06:06:30,656 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-28 06:06:30,668 INFO L208 MainTranslator]: Completed translation [2021-12-28 06:06:30,668 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30 WrapperNode [2021-12-28 06:06:30,668 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-28 06:06:30,669 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-28 06:06:30,669 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-28 06:06:30,670 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-28 06:06:30,703 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,707 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,727 INFO L137 Inliner]: procedures = 8, calls = 6, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 25 [2021-12-28 06:06:30,728 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-28 06:06:30,728 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-28 06:06:30,729 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-28 06:06:30,729 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-28 06:06:30,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,734 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,736 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,736 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,740 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,743 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,746 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,748 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-28 06:06:30,750 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-28 06:06:30,750 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-28 06:06:30,750 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-28 06:06:30,751 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (1/1) ... [2021-12-28 06:06:30,756 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-28 06:06:30,764 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 06:06:30,773 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-12-28 06:06:30,836 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-12-28 06:06:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-12-28 06:06:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-28 06:06:30,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-28 06:06:30,868 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-28 06:06:30,937 INFO L234 CfgBuilder]: Building ICFG [2021-12-28 06:06:30,938 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-28 06:06:31,065 INFO L275 CfgBuilder]: Performing block encoding [2021-12-28 06:06:31,069 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-28 06:06:31,069 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-28 06:06:31,071 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 06:06:31 BoogieIcfgContainer [2021-12-28 06:06:31,071 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-28 06:06:31,072 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-28 06:06:31,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-28 06:06:31,075 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-28 06:06:31,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.12 06:06:30" (1/3) ... [2021-12-28 06:06:31,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14451f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 06:06:31, skipping insertion in model container [2021-12-28 06:06:31,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.12 06:06:30" (2/3) ... [2021-12-28 06:06:31,076 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14451f8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.12 06:06:31, skipping insertion in model container [2021-12-28 06:06:31,076 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 06:06:31" (3/3) ... [2021-12-28 06:06:31,077 INFO L111 eAbstractionObserver]: Analyzing ICFG getNumbers3.c [2021-12-28 06:06:31,081 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-28 06:06:31,081 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 5 error locations. [2021-12-28 06:06:31,133 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-28 06:06:31,142 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-28 06:06:31,151 INFO L340 AbstractCegarLoop]: Starting to check reachability of 5 error locations. [2021-12-28 06:06:31,166 INFO L276 IsEmpty]: Start isEmpty. Operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:31,170 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-28 06:06:31,175 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:06:31,176 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-28 06:06:31,178 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-28 06:06:31,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:06:31,184 INFO L85 PathProgramCache]: Analyzing trace with hash 925765, now seen corresponding path program 1 times [2021-12-28 06:06:31,190 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 06:06:31,192 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [539445967] [2021-12-28 06:06:31,192 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:31,194 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 06:06:31,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:31,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:31,361 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 06:06:31,362 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [539445967] [2021-12-28 06:06:31,363 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [539445967] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:06:31,363 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:06:31,364 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [1] imperfect sequences [] total 1 [2021-12-28 06:06:31,365 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [612379762] [2021-12-28 06:06:31,366 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:06:31,369 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 06:06:31,369 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 06:06:31,393 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 06:06:31,394 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 06:06:31,396 INFO L87 Difference]: Start difference. First operand has 17 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 16 states have internal predecessors, (18), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:31,419 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:06:31,420 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2021-12-28 06:06:31,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 06:06:31,424 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-28 06:06:31,424 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:06:31,429 INFO L225 Difference]: With dead ends: 16 [2021-12-28 06:06:31,430 INFO L226 Difference]: Without dead ends: 14 [2021-12-28 06:06:31,432 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 1 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 06:06:31,435 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 13 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 8 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 06:06:31,437 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 8 Invalid, 8 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 06:06:31,449 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14 states. [2021-12-28 06:06:31,460 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14 to 14. [2021-12-28 06:06:31,461 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 14 states, 10 states have (on average 1.4) internal successors, (14), 13 states have internal predecessors, (14), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:31,463 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14 states to 14 states and 14 transitions. [2021-12-28 06:06:31,464 INFO L78 Accepts]: Start accepts. Automaton has 14 states and 14 transitions. Word has length 4 [2021-12-28 06:06:31,464 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:06:31,464 INFO L470 AbstractCegarLoop]: Abstraction has 14 states and 14 transitions. [2021-12-28 06:06:31,465 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 2 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:31,465 INFO L276 IsEmpty]: Start isEmpty. Operand 14 states and 14 transitions. [2021-12-28 06:06:31,465 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-28 06:06:31,465 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:06:31,466 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-28 06:06:31,467 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-12-28 06:06:31,467 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-28 06:06:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:06:31,469 INFO L85 PathProgramCache]: Analyzing trace with hash 925766, now seen corresponding path program 1 times [2021-12-28 06:06:31,470 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 06:06:31,470 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1547009379] [2021-12-28 06:06:31,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:31,471 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 06:06:31,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:31,580 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:31,581 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 06:06:31,581 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1547009379] [2021-12-28 06:06:31,581 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1547009379] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:06:31,581 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:06:31,582 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 06:06:31,582 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [487758721] [2021-12-28 06:06:31,582 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:06:31,583 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-28 06:06:31,583 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 06:06:31,584 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-28 06:06:31,584 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 06:06:31,584 INFO L87 Difference]: Start difference. First operand 14 states and 14 transitions. Second operand has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:31,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:06:31,620 INFO L93 Difference]: Finished difference Result 17 states and 17 transitions. [2021-12-28 06:06:31,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-28 06:06:31,621 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 4 [2021-12-28 06:06:31,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:06:31,621 INFO L225 Difference]: With dead ends: 17 [2021-12-28 06:06:31,621 INFO L226 Difference]: Without dead ends: 17 [2021-12-28 06:06:31,623 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2021-12-28 06:06:31,625 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 15 mSDsluCounter, 4 mSDsCounter, 0 mSdLazyCounter, 16 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 11 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 [2021-12-28 06:06:31,626 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 11 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 16 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 06:06:31,627 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-28 06:06:31,631 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2021-12-28 06:06:31,632 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 12 states have (on average 1.3333333333333333) internal successors, (16), 15 states have internal predecessors, (16), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:31,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2021-12-28 06:06:31,633 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 4 [2021-12-28 06:06:31,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:06:31,633 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2021-12-28 06:06:31,634 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 1.3333333333333333) internal successors, (4), 3 states have internal predecessors, (4), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:31,634 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2021-12-28 06:06:31,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-28 06:06:31,635 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:06:31,635 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-12-28 06:06:31,635 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-12-28 06:06:31,636 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-28 06:06:31,636 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:06:31,636 INFO L85 PathProgramCache]: Analyzing trace with hash 1809646286, now seen corresponding path program 1 times [2021-12-28 06:06:31,637 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 06:06:31,638 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2063512531] [2021-12-28 06:06:31,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:31,640 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 06:06:31,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:31,783 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:31,785 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 06:06:31,785 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2063512531] [2021-12-28 06:06:31,786 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [2063512531] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 06:06:31,786 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1630190882] [2021-12-28 06:06:31,786 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:31,792 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 06:06:31,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 06:06:31,793 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) [2021-12-28 06:06:31,794 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-12-28 06:06:31,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:31,850 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-28 06:06:31,853 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:06:31,994 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:31,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 06:06:32,072 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:32,075 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1630190882] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 06:06:32,076 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 06:06:32,076 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [4, 3, 3] total 10 [2021-12-28 06:06:32,076 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721326492] [2021-12-28 06:06:32,076 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 06:06:32,077 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-12-28 06:06:32,077 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 06:06:32,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-12-28 06:06:32,078 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2021-12-28 06:06:32,079 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:06:32,244 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2021-12-28 06:06:32,245 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-12-28 06:06:32,245 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 7 [2021-12-28 06:06:32,246 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:06:32,246 INFO L225 Difference]: With dead ends: 23 [2021-12-28 06:06:32,246 INFO L226 Difference]: Without dead ends: 23 [2021-12-28 06:06:32,248 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 42 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=99, Invalid=207, Unknown=0, NotChecked=0, Total=306 [2021-12-28 06:06:32,250 INFO L933 BasicCegarLoop]: 6 mSDtfsCounter, 52 mSDsluCounter, 8 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 16 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 52 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 61 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 16 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 06:06:32,251 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [52 Valid, 14 Invalid, 61 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [16 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 06:06:32,252 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2021-12-28 06:06:32,255 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2021-12-28 06:06:32,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 20 states have (on average 1.15) internal successors, (23), 22 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) [2021-12-28 06:06:32,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-12-28 06:06:32,257 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 7 [2021-12-28 06:06:32,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:06:32,257 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-12-28 06:06:32,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 1.9090909090909092) internal successors, (21), 11 states have internal predecessors, (21), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,257 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-12-28 06:06:32,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 06:06:32,258 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:06:32,258 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-12-28 06:06:32,280 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Ended with exit code 0 [2021-12-28 06:06:32,482 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2,2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 06:06:32,483 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-28 06:06:32,483 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:06:32,483 INFO L85 PathProgramCache]: Analyzing trace with hash -622871248, now seen corresponding path program 1 times [2021-12-28 06:06:32,483 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 06:06:32,484 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1944748445] [2021-12-28 06:06:32,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:32,484 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 06:06:32,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:32,564 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 7 proven. 0 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-12-28 06:06:32,564 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 06:06:32,564 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1944748445] [2021-12-28 06:06:32,564 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1944748445] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:06:32,566 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:06:32,566 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-28 06:06:32,566 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309475617] [2021-12-28 06:06:32,567 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:06:32,567 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 06:06:32,567 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 06:06:32,568 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 06:06:32,568 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 06:06:32,568 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,592 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:06:32,592 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-12-28 06:06:32,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 06:06:32,593 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 18 [2021-12-28 06:06:32,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:06:32,594 INFO L225 Difference]: With dead ends: 22 [2021-12-28 06:06:32,594 INFO L226 Difference]: Without dead ends: 22 [2021-12-28 06:06:32,594 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 [2021-12-28 06:06:32,595 INFO L933 BasicCegarLoop]: 5 mSDtfsCounter, 16 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 06:06:32,595 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 11 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 06:06:32,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-28 06:06:32,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-28 06:06:32,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 20 states have (on average 1.1) internal successors, (22), 21 states have internal predecessors, (22), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,597 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-12-28 06:06:32,597 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 18 [2021-12-28 06:06:32,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:06:32,598 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-12-28 06:06:32,598 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.75) internal successors, (11), 5 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,598 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-12-28 06:06:32,598 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-12-28 06:06:32,598 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:06:32,599 INFO L514 BasicCegarLoop]: trace histogram [4, 4, 4, 1, 1, 1, 1, 1, 1] [2021-12-28 06:06:32,599 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-12-28 06:06:32,599 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-28 06:06:32,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:06:32,600 INFO L85 PathProgramCache]: Analyzing trace with hash -622871247, now seen corresponding path program 1 times [2021-12-28 06:06:32,600 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 06:06:32,600 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1771588246] [2021-12-28 06:06:32,600 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:32,600 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 06:06:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:32,645 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:32,646 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 06:06:32,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1771588246] [2021-12-28 06:06:32,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1771588246] provided 0 perfect and 1 imperfect interpolant sequences [2021-12-28 06:06:32,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1398260285] [2021-12-28 06:06:32,647 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:32,647 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 06:06:32,647 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-28 06:06:32,648 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) [2021-12-28 06:06:32,649 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-12-28 06:06:32,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:32,680 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 6 conjunts are in the unsatisfiable core [2021-12-28 06:06:32,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-28 06:06:32,723 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:32,723 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-28 06:06:32,789 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 0 proven. 22 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-28 06:06:32,789 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1398260285] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-28 06:06:32,789 INFO L186 FreeRefinementEngine]: Found 0 perfect and 3 imperfect interpolant sequences. [2021-12-28 06:06:32,789 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7, 7] total 13 [2021-12-28 06:06:32,790 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [878803893] [2021-12-28 06:06:32,790 INFO L85 oduleStraightlineAll]: Using 3 imperfect interpolants to construct interpolant automaton [2021-12-28 06:06:32,790 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2021-12-28 06:06:32,790 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 06:06:32,791 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2021-12-28 06:06:32,791 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-28 06:06:32,791 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:06:32,826 INFO L93 Difference]: Finished difference Result 40 states and 40 transitions. [2021-12-28 06:06:32,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-12-28 06:06:32,826 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 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 [2021-12-28 06:06:32,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:06:32,827 INFO L225 Difference]: With dead ends: 40 [2021-12-28 06:06:32,827 INFO L226 Difference]: Without dead ends: 40 [2021-12-28 06:06:32,827 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=78, Invalid=78, Unknown=0, NotChecked=0, Total=156 [2021-12-28 06:06:32,828 INFO L933 BasicCegarLoop]: 9 mSDtfsCounter, 20 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 37 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 30 SdHoareTripleChecker+Invalid, 45 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 37 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 06:06:32,828 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 30 Invalid, 45 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 37 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 06:06:32,829 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2021-12-28 06:06:32,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2021-12-28 06:06:32,830 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 40 states, 38 states have (on average 1.0526315789473684) internal successors, (40), 39 states have internal predecessors, (40), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 40 transitions. [2021-12-28 06:06:32,831 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 40 transitions. Word has length 18 [2021-12-28 06:06:32,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:06:32,831 INFO L470 AbstractCegarLoop]: Abstraction has 40 states and 40 transitions. [2021-12-28 06:06:32,832 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 13 states have (on average 2.769230769230769) internal successors, (36), 13 states have internal predecessors, (36), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:32,832 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 40 transitions. [2021-12-28 06:06:32,832 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2021-12-28 06:06:32,832 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:06:32,833 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1] [2021-12-28 06:06:32,865 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-12-28 06:06:33,047 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-12-28 06:06:33,048 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-28 06:06:33,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:06:33,048 INFO L85 PathProgramCache]: Analyzing trace with hash 1009317425, now seen corresponding path program 2 times [2021-12-28 06:06:33,048 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 06:06:33,048 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124782593] [2021-12-28 06:06:33,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:33,049 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 06:06:33,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:33,171 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-28 06:06:33,171 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 06:06:33,172 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [124782593] [2021-12-28 06:06:33,172 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [124782593] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:06:33,172 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:06:33,172 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-28 06:06:33,172 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1388178038] [2021-12-28 06:06:33,172 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:06:33,173 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-12-28 06:06:33,173 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 06:06:33,173 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-12-28 06:06:33,174 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-12-28 06:06:33,174 INFO L87 Difference]: Start difference. First operand 40 states and 40 transitions. Second operand has 5 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) [2021-12-28 06:06:33,210 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:06:33,211 INFO L93 Difference]: Finished difference Result 39 states and 39 transitions. [2021-12-28 06:06:33,211 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-28 06:06:33,211 INFO L78 Accepts]: Start accepts. Automaton has has 5 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 36 [2021-12-28 06:06:33,223 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:06:33,224 INFO L225 Difference]: With dead ends: 39 [2021-12-28 06:06:33,225 INFO L226 Difference]: Without dead ends: 39 [2021-12-28 06:06:33,225 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 0 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-12-28 06:06:33,226 INFO L933 BasicCegarLoop]: 7 mSDtfsCounter, 12 mSDsluCounter, 6 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 06:06:33,227 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 13 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 06:06:33,228 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2021-12-28 06:06:33,230 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2021-12-28 06:06:33,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 39 states, 38 states have (on average 1.0263157894736843) internal successors, (39), 38 states have internal predecessors, (39), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:33,232 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 39 transitions. [2021-12-28 06:06:33,233 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 39 transitions. Word has length 36 [2021-12-28 06:06:33,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:06:33,233 INFO L470 AbstractCegarLoop]: Abstraction has 39 states and 39 transitions. [2021-12-28 06:06:33,233 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 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) [2021-12-28 06:06:33,233 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 39 transitions. [2021-12-28 06:06:33,234 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2021-12-28 06:06:33,235 INFO L506 BasicCegarLoop]: Found error trace [2021-12-28 06:06:33,235 INFO L514 BasicCegarLoop]: trace histogram [10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-28 06:06:33,235 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-12-28 06:06:33,235 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2REQUIRES_VIOLATION, ULTIMATE.startErr3REQUIRES_VIOLATION (and 1 more)] === [2021-12-28 06:06:33,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-28 06:06:33,236 INFO L85 PathProgramCache]: Analyzing trace with hash -708564591, now seen corresponding path program 1 times [2021-12-28 06:06:33,237 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-12-28 06:06:33,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [177659716] [2021-12-28 06:06:33,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-28 06:06:33,237 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-12-28 06:06:33,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-28 06:06:33,326 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-12-28 06:06:33,327 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-12-28 06:06:33,327 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [177659716] [2021-12-28 06:06:33,327 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [177659716] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-28 06:06:33,327 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-28 06:06:33,327 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-28 06:06:33,327 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1135208583] [2021-12-28 06:06:33,328 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-28 06:06:33,328 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-28 06:06:33,328 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-12-28 06:06:33,328 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-28 06:06:33,329 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 06:06:33,329 INFO L87 Difference]: Start difference. First operand 39 states and 39 transitions. Second operand has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:33,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-28 06:06:33,333 INFO L93 Difference]: Finished difference Result 38 states and 38 transitions. [2021-12-28 06:06:33,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-28 06:06:33,334 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) Word has length 38 [2021-12-28 06:06:33,334 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-28 06:06:33,334 INFO L225 Difference]: With dead ends: 38 [2021-12-28 06:06:33,334 INFO L226 Difference]: Without dead ends: 0 [2021-12-28 06:06:33,335 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 1 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-28 06:06:33,335 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 3 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 8 SdHoareTripleChecker+Invalid, 3 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 3 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-28 06:06:33,336 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 8 Invalid, 3 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 3 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-28 06:06:33,336 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-28 06:06:33,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-28 06:06:33,336 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) [2021-12-28 06:06:33,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-28 06:06:33,337 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 38 [2021-12-28 06:06:33,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-28 06:06:33,337 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-28 06:06:33,337 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.5) internal successors, (11), 3 states have internal predecessors, (11), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-28 06:06:33,337 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-28 06:06:33,337 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-28 06:06:33,339 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0REQUIRES_VIOLATION (4 of 5 remaining) [2021-12-28 06:06:33,340 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (3 of 5 remaining) [2021-12-28 06:06:33,340 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2REQUIRES_VIOLATION (2 of 5 remaining) [2021-12-28 06:06:33,340 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3REQUIRES_VIOLATION (1 of 5 remaining) [2021-12-28 06:06:33,340 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_LEAK (0 of 5 remaining) [2021-12-28 06:06:33,341 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-12-28 06:06:33,345 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1, 1] [2021-12-28 06:06:33,347 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-28 06:06:33,349 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.12 06:06:33 BoogieIcfgContainer [2021-12-28 06:06:33,349 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-28 06:06:33,349 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-28 06:06:33,349 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-28 06:06:33,350 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-28 06:06:33,350 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.12 06:06:31" (3/4) ... [2021-12-28 06:06:33,353 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-28 06:06:33,363 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 11 nodes and edges [2021-12-28 06:06:33,364 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-28 06:06:33,364 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 3 nodes and edges [2021-12-28 06:06:33,385 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-28 06:06:33,385 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-28 06:06:33,385 INFO L158 Benchmark]: Toolchain (without parser) took 2860.09ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 46.5MB in the beginning and 49.9MB in the end (delta: -3.4MB). Peak memory consumption was 9.5MB. Max. memory is 16.1GB. [2021-12-28 06:06:33,386 INFO L158 Benchmark]: CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-28 06:06:33,386 INFO L158 Benchmark]: CACSL2BoogieTranslator took 142.44ms. Allocated memory is still 65.0MB. Free memory was 46.3MB in the beginning and 37.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 06:06:33,386 INFO L158 Benchmark]: Boogie Procedure Inliner took 58.58ms. Allocated memory is still 65.0MB. Free memory was 37.1MB in the beginning and 48.7MB in the end (delta: -11.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-28 06:06:33,386 INFO L158 Benchmark]: Boogie Preprocessor took 19.92ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 06:06:33,388 INFO L158 Benchmark]: RCFGBuilder took 321.60ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 38.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-28 06:06:33,388 INFO L158 Benchmark]: TraceAbstraction took 2276.69ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 38.3MB in the beginning and 52.0MB in the end (delta: -13.6MB). Peak memory consumption was 397.1kB. Max. memory is 16.1GB. [2021-12-28 06:06:33,388 INFO L158 Benchmark]: Witness Printer took 35.64ms. Allocated memory is still 79.7MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-28 06:06:33,390 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15ms. Allocated memory is still 65.0MB. Free memory was 47.5MB in the beginning and 47.4MB in the end (delta: 84.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 142.44ms. Allocated memory is still 65.0MB. Free memory was 46.3MB in the beginning and 37.1MB in the end (delta: 9.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 58.58ms. Allocated memory is still 65.0MB. Free memory was 37.1MB in the beginning and 48.7MB in the end (delta: -11.6MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 19.92ms. Allocated memory is still 65.0MB. Free memory was 48.7MB in the beginning and 47.7MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 321.60ms. Allocated memory is still 65.0MB. Free memory was 47.7MB in the beginning and 38.8MB in the end (delta: 8.9MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2276.69ms. Allocated memory was 65.0MB in the beginning and 79.7MB in the end (delta: 14.7MB). Free memory was 38.3MB in the beginning and 52.0MB in the end (delta: -13.6MB). Peak memory consumption was 397.1kB. Max. memory is 16.1GB. * Witness Printer took 35.64ms. Allocated memory is still 79.7MB. Free memory was 52.0MB in the beginning and 49.9MB in the end (delta: 2.1MB). 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: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 6]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 14]: pointer dereference always succeeds For all program executions holds that pointer dereference always succeeds at this location - PositiveResult [Line: 12]: 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, 17 locations, 5 error locations. Started 1 CEGAR loops. OverallTime: 2.2s, OverallIterations: 7, TraceHistogramMax: 10, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 128 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 128 mSDsluCounter, 95 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 27 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 134 IncrementalHoareTripleChecker+Invalid, 161 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 27 mSolverCounterUnsat, 50 mSDtfsCounter, 134 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 79 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 41 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=5, InterpolantAutomatonStates: 40, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 7 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 150 NumberOfCodeBlocks, 150 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 164 ConstructedInterpolants, 0 QuantifiedInterpolants, 1089 SizeOfPredicates, 0 NumberOfNonLiveVariables, 111 ConjunctsInSsa, 16 ConjunctsInUnsatCore, 11 InterpolantComputations, 5 PerfectInterpolantSequences, 312/384 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 5 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-28 06:06:33,425 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE