./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/ldv-regression/test08.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 9a8b2e8d 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_1.3.100.v20150511-1540.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/test08.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 3d186e704599e729d48e81eb495efdc1b4000c01 .................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 00:43:40,518 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:43:40,522 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:43:40,562 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:43:40,563 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:43:40,572 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:43:40,574 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:43:40,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:43:40,581 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:43:40,584 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:43:40,585 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:43:40,587 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:43:40,587 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:43:40,591 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:43:40,592 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:43:40,594 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:43:40,596 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:43:40,597 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:43:40,599 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:43:40,606 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:43:40,608 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:43:40,610 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:43:40,612 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:43:40,613 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:43:40,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:43:40,629 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:43:40,629 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:43:40,630 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:43:40,631 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:43:40,633 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:43:40,635 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:43:40,636 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:43:40,637 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:43:40,638 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:43:40,639 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:43:40,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:43:40,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:43:40,643 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:43:40,643 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:43:40,644 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:43:40,646 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:43:40,648 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:43:40,693 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:43:40,693 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:43:40,694 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:43:40,695 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:43:40,695 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:43:40,695 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:43:40,696 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:43:40,696 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:43:40,696 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:43:40,696 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:43:40,697 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:43:40,697 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:43:40,697 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:43:40,698 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:43:40,698 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:43:40,698 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:43:40,698 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:43:40,699 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:43:40,699 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:43:40,699 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:43:40,699 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:43:40,700 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:43:40,700 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:43:40,700 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:43:40,700 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:43:40,701 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:43:40,701 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:43:40,701 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:43:40,701 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:43:40,702 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode 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 -> 3d186e704599e729d48e81eb495efdc1b4000c01 [2020-10-20 00:43:40,906 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:43:40,918 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:43:40,922 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:43:40,923 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:43:40,924 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:43:40,925 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test08.c [2020-10-20 00:43:40,981 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cc8973bb/49c3aff7d66949f69cc4accda83ec6f2/FLAG7c574c9e8 [2020-10-20 00:43:41,468 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:43:41,469 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test08.c [2020-10-20 00:43:41,476 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cc8973bb/49c3aff7d66949f69cc4accda83ec6f2/FLAG7c574c9e8 [2020-10-20 00:43:41,866 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/9cc8973bb/49c3aff7d66949f69cc4accda83ec6f2 [2020-10-20 00:43:41,869 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:43:41,876 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:43:41,877 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:43:41,877 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:43:41,881 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:43:41,882 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:43:41" (1/1) ... [2020-10-20 00:43:41,886 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f78e2b5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:41, skipping insertion in model container [2020-10-20 00:43:41,887 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:43:41" (1/1) ... [2020-10-20 00:43:41,895 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:43:41,915 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:43:42,149 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:43:42,160 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:43:42,178 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:43:42,194 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:43:42,194 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42 WrapperNode [2020-10-20 00:43:42,195 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:43:42,196 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:43:42,196 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:43:42,196 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:43:42,205 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,213 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,230 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:43:42,231 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:43:42,231 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:43:42,231 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:43:42,241 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,241 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,248 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,250 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,251 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... [2020-10-20 00:43:42,254 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:43:42,254 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:43:42,255 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:43:42,255 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:43:42,256 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:43:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:43:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:43:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:43:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:43:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:43:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:43:42,562 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:43:42,562 INFO L298 CfgBuilder]: Removed 8 assume(true) statements. [2020-10-20 00:43:42,564 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:42 BoogieIcfgContainer [2020-10-20 00:43:42,564 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:43:42,565 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:43:42,566 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:43:42,569 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:43:42,569 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:43:41" (1/3) ... [2020-10-20 00:43:42,570 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dc4325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:43:42, skipping insertion in model container [2020-10-20 00:43:42,570 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:42" (2/3) ... [2020-10-20 00:43:42,571 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26dc4325 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:43:42, skipping insertion in model container [2020-10-20 00:43:42,571 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:42" (3/3) ... [2020-10-20 00:43:42,572 INFO L111 eAbstractionObserver]: Analyzing ICFG test08.c [2020-10-20 00:43:42,585 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:43:42,592 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:43:42,609 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:43:42,645 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:43:42,646 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:43:42,646 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:43:42,646 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:43:42,646 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:43:42,646 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:43:42,647 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:43:42,647 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:43:42,666 INFO L276 IsEmpty]: Start isEmpty. Operand 11 states. [2020-10-20 00:43:42,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 7 [2020-10-20 00:43:42,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:43:42,674 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1] [2020-10-20 00:43:42,675 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:43:42,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:43:42,681 INFO L82 PathProgramCache]: Analyzing trace with hash 889508715, now seen corresponding path program 1 times [2020-10-20 00:43:42,692 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:43:42,693 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1838691443] [2020-10-20 00:43:42,693 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:43:42,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:43:42,834 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:43:42,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:43:42,886 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:43:42,917 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:43:42,918 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:43:42,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:43:42,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:43:42 BoogieIcfgContainer [2020-10-20 00:43:42,966 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:43:42,967 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:43:42,967 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:43:42,968 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:43:42,968 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:42" (3/4) ... [2020-10-20 00:43:42,972 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:43:43,028 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:43:43,029 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:43:43,032 INFO L168 Benchmark]: Toolchain (without parser) took 1160.04 ms. Allocated memory was 36.7 MB in the beginning and 47.7 MB in the end (delta: 11.0 MB). Free memory was 10.7 MB in the beginning and 26.5 MB in the end (delta: -15.8 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-20 00:43:43,033 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 36.7 MB. Free memory was 15.7 MB in the beginning and 15.7 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. [2020-10-20 00:43:43,034 INFO L168 Benchmark]: CACSL2BoogieTranslator took 318.18 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 9.8 MB in the beginning and 27.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:43,035 INFO L168 Benchmark]: Boogie Procedure Inliner took 35.15 ms. Allocated memory is still 44.6 MB. Free memory was 27.7 MB in the beginning and 26.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:43,036 INFO L168 Benchmark]: Boogie Preprocessor took 22.89 ms. Allocated memory is still 44.6 MB. Free memory was 26.0 MB in the beginning and 24.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:43,037 INFO L168 Benchmark]: RCFGBuilder took 309.81 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 24.7 MB in the beginning and 26.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:43,038 INFO L168 Benchmark]: TraceAbstraction took 400.65 ms. Allocated memory is still 47.7 MB. Free memory was 25.7 MB in the beginning and 29.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:43,039 INFO L168 Benchmark]: Witness Printer took 62.43 ms. Allocated memory is still 47.7 MB. Free memory was 29.0 MB in the beginning and 26.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:43,044 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 36.7 MB. Free memory was 15.7 MB in the beginning and 15.7 MB in the end (delta: 49.2 kB). Peak memory consumption was 49.2 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 318.18 ms. Allocated memory was 36.7 MB in the beginning and 44.6 MB in the end (delta: 7.9 MB). Free memory was 9.8 MB in the beginning and 27.7 MB in the end (delta: -17.9 MB). Peak memory consumption was 7.3 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 35.15 ms. Allocated memory is still 44.6 MB. Free memory was 27.7 MB in the beginning and 26.0 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 22.89 ms. Allocated memory is still 44.6 MB. Free memory was 26.0 MB in the beginning and 24.7 MB in the end (delta: 1.3 MB). Peak memory consumption was 1.3 MB. Max. memory is 14.3 GB. * RCFGBuilder took 309.81 ms. Allocated memory was 44.6 MB in the beginning and 47.7 MB in the end (delta: 3.1 MB). Free memory was 24.7 MB in the beginning and 26.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. * TraceAbstraction took 400.65 ms. Allocated memory is still 47.7 MB. Free memory was 25.7 MB in the beginning and 29.0 MB in the end (delta: -3.3 MB). Peak memory consumption was 16.0 MB. Max. memory is 14.3 GB. * Witness Printer took 62.43 ms. Allocated memory is still 47.7 MB. Free memory was 29.0 MB in the beginning and 26.5 MB in the end (delta: 2.5 MB). Peak memory consumption was 2.5 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L6] int a, b; [L7] int *p1, *p2; VAL [a={5:0}, b={3:0}, p1={0:0}, p2={0:0}] [L21] p1 = &a [L22] p2 = &b [L24] b = 1 [L25] a = 5 [L27] EXPR \read(a) [L27] a-- [L10] EXPR \read(*p1) [L10] EXPR \read(*p2) [L10] EXPR \read(a) [L10] int v = *p1 + *p2 - a; [L11] COND TRUE v == 1 [L12] p1 = p2 [L13] return v; VAL [a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] [L29] a = f() [L31] EXPR \read(a) VAL [a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] [L31] COND TRUE a && p1 == p2 [L3] __assert_fail("0", "test08.c", 3, "reach_error") VAL [a={5:0}, b={3:0}, p1={3:0}, p2={3:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 11 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=11occurred in iteration=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, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 6 NumberOfCodeBlocks, 6 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! Received shutdown request...