./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test21-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 35987657 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/AutomizerReach.xml -i ../sv-benchmarks/c/ldv-regression/test21-2.c -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-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 ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 712c5452cee1b4c02208da17c2cf0dc9636485194e157c656e1372fe334269f7 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 02:03:33,638 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 02:03:33,640 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 02:03:33,673 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 02:03:33,673 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 02:03:33,674 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 02:03:33,677 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 02:03:33,680 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 02:03:33,681 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 02:03:33,685 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 02:03:33,686 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 02:03:33,687 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 02:03:33,688 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 02:03:33,689 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 02:03:33,690 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 02:03:33,694 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 02:03:33,695 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 02:03:33,696 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 02:03:33,697 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 02:03:33,702 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 02:03:33,703 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 02:03:33,704 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 02:03:33,705 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 02:03:33,706 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 02:03:33,707 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 02:03:33,712 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 02:03:33,712 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 02:03:33,713 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 02:03:33,713 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 02:03:33,713 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 02:03:33,714 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 02:03:33,714 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 02:03:33,716 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 02:03:33,716 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 02:03:33,717 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 02:03:33,718 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 02:03:33,718 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 02:03:33,719 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 02:03:33,719 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 02:03:33,719 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 02:03:33,720 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 02:03:33,721 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 02:03:33,725 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2022-07-21 02:03:33,749 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 02:03:33,750 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 02:03:33,750 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 02:03:33,750 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 02:03:33,751 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 02:03:33,751 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 02:03:33,752 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 02:03:33,752 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 02:03:33,752 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 02:03:33,753 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 02:03:33,753 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 02:03:33,753 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 02:03:33,753 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 02:03:33,762 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 02:03:33,762 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2022-07-21 02:03:33,762 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 02:03:33,762 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2022-07-21 02:03:33,762 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 02:03:33,763 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2022-07-21 02:03:33,763 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 02:03:33,763 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2022-07-21 02:03:33,763 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 02:03:33,763 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 02:03:33,763 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 02:03:33,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:03:33,764 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 02:03:33,764 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 02:03:33,764 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2022-07-21 02:03:33,764 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 02:03:33,764 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 02:03:33,765 INFO L138 SettingsManager]: * Apply one-shot large block encoding in concurrent analysis=false [2022-07-21 02:03:33,765 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-07-21 02:03:33,765 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2022-07-21 02:03:33,765 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 712c5452cee1b4c02208da17c2cf0dc9636485194e157c656e1372fe334269f7 [2022-07-21 02:03:34,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 02:03:34,039 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 02:03:34,041 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 02:03:34,042 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 02:03:34,042 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 02:03:34,043 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test21-2.c [2022-07-21 02:03:34,105 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f90a488e/554fe10d2e7a467cb56c850579d6a491/FLAG29f61758b [2022-07-21 02:03:34,495 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 02:03:34,496 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test21-2.c [2022-07-21 02:03:34,500 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f90a488e/554fe10d2e7a467cb56c850579d6a491/FLAG29f61758b [2022-07-21 02:03:34,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7f90a488e/554fe10d2e7a467cb56c850579d6a491 [2022-07-21 02:03:34,516 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 02:03:34,517 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 02:03:34,519 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 02:03:34,519 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 02:03:34,522 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 02:03:34,522 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,523 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c5566a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34, skipping insertion in model container [2022-07-21 02:03:34,523 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 02:03:34,538 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 02:03:34,645 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test21-2.c[892,905] [2022-07-21 02:03:34,647 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:03:34,658 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 02:03:34,672 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test21-2.c[892,905] [2022-07-21 02:03:34,673 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 02:03:34,687 INFO L208 MainTranslator]: Completed translation [2022-07-21 02:03:34,687 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34 WrapperNode [2022-07-21 02:03:34,687 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 02:03:34,688 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 02:03:34,689 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 02:03:34,689 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 02:03:34,693 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,699 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,724 INFO L137 Inliner]: procedures = 16, calls = 23, calls flagged for inlining = 4, calls inlined = 4, statements flattened = 59 [2022-07-21 02:03:34,725 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 02:03:34,726 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 02:03:34,726 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 02:03:34,726 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 02:03:34,731 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,731 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,739 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,749 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,750 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,753 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,755 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 02:03:34,756 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 02:03:34,756 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 02:03:34,757 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 02:03:34,757 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (1/1) ... [2022-07-21 02:03:34,762 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 02:03:34,769 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 02:03:34,791 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) [2022-07-21 02:03:34,839 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 [2022-07-21 02:03:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 02:03:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2022-07-21 02:03:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2022-07-21 02:03:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2022-07-21 02:03:34,861 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2022-07-21 02:03:34,861 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 02:03:34,862 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 02:03:34,862 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2022-07-21 02:03:34,946 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 02:03:34,947 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 02:03:35,099 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 02:03:35,106 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 02:03:35,107 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 02:03:35,108 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:35 BoogieIcfgContainer [2022-07-21 02:03:35,109 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 02:03:35,110 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 02:03:35,110 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 02:03:35,114 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 02:03:35,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 02:03:34" (1/3) ... [2022-07-21 02:03:35,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b41130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:03:35, skipping insertion in model container [2022-07-21 02:03:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 02:03:34" (2/3) ... [2022-07-21 02:03:35,115 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@45b41130 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 02:03:35, skipping insertion in model container [2022-07-21 02:03:35,115 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:35" (3/3) ... [2022-07-21 02:03:35,116 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2022-07-21 02:03:35,126 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 02:03:35,126 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 1 error locations. [2022-07-21 02:03:35,168 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 02:03:35,188 INFO L357 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=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, 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, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@7712af37, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@435e81f3 [2022-07-21 02:03:35,189 INFO L358 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2022-07-21 02:03:35,201 INFO L276 IsEmpty]: Start isEmpty. Operand has 20 states, 15 states have (on average 1.2666666666666666) internal successors, (19), 16 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-21 02:03:35,206 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-21 02:03:35,206 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 02:03:35,207 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 02:03:35,208 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2022-07-21 02:03:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 02:03:35,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1198895907, now seen corresponding path program 1 times [2022-07-21 02:03:35,219 INFO L118 FreeRefinementEngine]: Executing refinement strategy CAMEL [2022-07-21 02:03:35,219 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [330316590] [2022-07-21 02:03:35,220 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 02:03:35,221 INFO L127 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2022-07-21 02:03:35,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:03:35,341 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 02:03:35,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 02:03:35,383 INFO L130 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2022-07-21 02:03:35,385 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 02:03:35,386 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION (0 of 1 remaining) [2022-07-21 02:03:35,388 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2022-07-21 02:03:35,390 INFO L356 BasicCegarLoop]: Path program histogram: [1] [2022-07-21 02:03:35,395 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 02:03:35,417 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 02:03:35 BoogieIcfgContainer [2022-07-21 02:03:35,417 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 02:03:35,417 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 02:03:35,418 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 02:03:35,418 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 02:03:35,418 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 02:03:35" (3/4) ... [2022-07-21 02:03:35,419 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 02:03:35,447 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 02:03:35,447 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 02:03:35,448 INFO L158 Benchmark]: Toolchain (without parser) took 930.72ms. Allocated memory is still 58.7MB. Free memory was 39.1MB in the beginning and 26.1MB in the end (delta: 13.0MB). Peak memory consumption was 14.9MB. Max. memory is 16.1GB. [2022-07-21 02:03:35,448 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 44.0MB. Free memory was 25.7MB in the beginning and 25.7MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:03:35,449 INFO L158 Benchmark]: CACSL2BoogieTranslator took 168.59ms. Allocated memory is still 58.7MB. Free memory was 38.8MB in the beginning and 28.6MB in the end (delta: 10.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-21 02:03:35,449 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.52ms. Allocated memory is still 58.7MB. Free memory was 28.6MB in the beginning and 42.7MB in the end (delta: -14.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 02:03:35,449 INFO L158 Benchmark]: Boogie Preprocessor took 29.85ms. Allocated memory is still 58.7MB. Free memory was 42.7MB in the beginning and 41.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 02:03:35,450 INFO L158 Benchmark]: RCFGBuilder took 352.96ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 31.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-21 02:03:35,450 INFO L158 Benchmark]: TraceAbstraction took 307.13ms. Allocated memory is still 58.7MB. Free memory was 31.1MB in the beginning and 28.4MB in the end (delta: 2.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. [2022-07-21 02:03:35,451 INFO L158 Benchmark]: Witness Printer took 29.76ms. Allocated memory is still 58.7MB. Free memory was 28.4MB in the beginning and 26.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 02:03:35,453 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 44.0MB. Free memory was 25.7MB in the beginning and 25.7MB in the end (delta: 34.4kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 168.59ms. Allocated memory is still 58.7MB. Free memory was 38.8MB in the beginning and 28.6MB in the end (delta: 10.3MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.52ms. Allocated memory is still 58.7MB. Free memory was 28.6MB in the beginning and 42.7MB in the end (delta: -14.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 29.85ms. Allocated memory is still 58.7MB. Free memory was 42.7MB in the beginning and 41.6MB in the end (delta: 1.1MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 352.96ms. Allocated memory is still 58.7MB. Free memory was 41.6MB in the beginning and 31.5MB in the end (delta: 10.1MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 307.13ms. Allocated memory is still 58.7MB. Free memory was 31.1MB in the beginning and 28.4MB in the end (delta: 2.7MB). Peak memory consumption was 3.5MB. Max. memory is 16.1GB. * Witness Printer took 29.76ms. Allocated memory is still 58.7MB. Free memory was 28.4MB in the beginning and 26.1MB in the end (delta: 2.3MB). 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 - CounterExampleResult [Line: 44]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L11] struct dummy d1, d2; VAL [d1={4:0}, d2={5:0}] [L34] CALL init() [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L34] RET init() [L35] CALL, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={4:0}, d1={4:0}, d2={5:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}, get_dummy()={4:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L35] CALL, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}] [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [__VERIFIER_nondet_bool()=1, __VERIFIER_nondet_bool() ? &d1 : &d2={4:0}, d1={4:0}, d2={5:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] RET, EXPR get_dummy() VAL [d1={4:0}, d2={5:0}, get_dummy()={4:0}, pd1={4:0}] [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 [L37] CALL, EXPR check(pd1, pd2) [L29] EXPR s1->a [L29] EXPR s2->b [L29] return s1->a == s2->b; [L37] RET, EXPR check(pd1, pd2) [L37] COND TRUE !check(pd1, pd2) [L44] reach_error() VAL [d1={4:0}, d2={5:0}, pd1={4:0}, pd2={4:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: , PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=20occurred in iteration=0, InterpolantAutomatonStates: 0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 19 NumberOfCodeBlocks, 19 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-21 02:03:35,478 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 Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE