./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 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/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 34ee7183d8669d8a5837b9fc7867e46ccee92ce8 ................................................................................................................................................................................................................................................ 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 00:43:50,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 00:43:50,779 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 00:43:50,819 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 00:43:50,820 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 00:43:50,829 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 00:43:50,831 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 00:43:50,835 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 00:43:50,837 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 00:43:50,840 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 00:43:50,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 00:43:50,843 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 00:43:50,843 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 00:43:50,847 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 00:43:50,848 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 00:43:50,850 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 00:43:50,851 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 00:43:50,852 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 00:43:50,854 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 00:43:50,861 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 00:43:50,863 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 00:43:50,866 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 00:43:50,868 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 00:43:50,869 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 00:43:50,880 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 00:43:50,880 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 00:43:50,880 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 00:43:50,891 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 00:43:50,891 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 00:43:50,892 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 00:43:50,892 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 00:43:50,894 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 00:43:50,895 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 00:43:50,895 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 00:43:50,897 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 00:43:50,897 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 00:43:50,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 00:43:50,898 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 00:43:50,898 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 00:43:50,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 00:43:50,900 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 00:43:50,901 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-20 00:43:50,938 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 00:43:50,939 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 00:43:50,941 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 00:43:50,941 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 00:43:50,941 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 00:43:50,941 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 00:43:50,942 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 00:43:50,942 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 00:43:50,942 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 00:43:50,942 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 00:43:50,943 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-20 00:43:50,943 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 00:43:50,944 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-20 00:43:50,944 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 00:43:50,944 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-20 00:43:50,944 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 00:43:50,944 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-20 00:43:50,945 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 00:43:50,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 00:43:50,945 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 00:43:50,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 00:43:50,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 00:43:50,946 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 00:43:50,946 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 00:43:50,946 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-20 00:43:50,946 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 00:43:50,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 00:43:50,946 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-20 00:43:50,947 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 00:43:50,947 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 -> 34ee7183d8669d8a5837b9fc7867e46ccee92ce8 [2020-10-20 00:43:51,171 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 00:43:51,188 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 00:43:51,194 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 00:43:51,198 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 00:43:51,199 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 00:43:51,200 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-regression/test21-2.c [2020-10-20 00:43:51,272 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd3a9629/fe76dba9ab624db9846d200750b337a5/FLAG4a4f95ce7 [2020-10-20 00:43:51,807 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 00:43:51,808 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-regression/test21-2.c [2020-10-20 00:43:51,815 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd3a9629/fe76dba9ab624db9846d200750b337a5/FLAG4a4f95ce7 [2020-10-20 00:43:52,165 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4fd3a9629/fe76dba9ab624db9846d200750b337a5 [2020-10-20 00:43:52,169 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 00:43:52,178 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-20 00:43:52,181 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 00:43:52,182 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 00:43:52,185 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 00:43:52,186 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,190 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f4031c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52, skipping insertion in model container [2020-10-20 00:43:52,190 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,198 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 00:43:52,219 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 00:43:52,433 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:43:52,443 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 00:43:52,460 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 00:43:52,478 INFO L208 MainTranslator]: Completed translation [2020-10-20 00:43:52,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52 WrapperNode [2020-10-20 00:43:52,479 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 00:43:52,480 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-20 00:43:52,480 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-20 00:43:52,480 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-20 00:43:52,487 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,496 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,516 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-20 00:43:52,517 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 00:43:52,517 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 00:43:52,518 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 00:43:52,527 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,528 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,530 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,531 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,537 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,540 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,541 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (1/1) ... [2020-10-20 00:43:52,543 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 00:43:52,544 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 00:43:52,544 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 00:43:52,544 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 00:43:52,545 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (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 00:43:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 00:43:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 00:43:52,614 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 00:43:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 00:43:52,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 00:43:52,615 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 00:43:52,880 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 00:43:52,881 INFO L298 CfgBuilder]: Removed 14 assume(true) statements. [2020-10-20 00:43:52,883 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:52 BoogieIcfgContainer [2020-10-20 00:43:52,883 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 00:43:52,885 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 00:43:52,885 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 00:43:52,889 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 00:43:52,890 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 12:43:52" (1/3) ... [2020-10-20 00:43:52,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c142003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:43:52, skipping insertion in model container [2020-10-20 00:43:52,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 12:43:52" (2/3) ... [2020-10-20 00:43:52,891 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c142003 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 12:43:52, skipping insertion in model container [2020-10-20 00:43:52,891 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:52" (3/3) ... [2020-10-20 00:43:52,893 INFO L111 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-10-20 00:43:52,905 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 00:43:52,914 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-20 00:43:52,930 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-20 00:43:52,964 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 00:43:52,965 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-20 00:43:52,965 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 00:43:52,966 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 00:43:52,966 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 00:43:52,966 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 00:43:52,967 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 00:43:52,967 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 00:43:52,987 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states. [2020-10-20 00:43:52,995 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 00:43:52,995 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 00:43:52,996 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 00:43:52,997 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-20 00:43:53,005 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 00:43:53,005 INFO L82 PathProgramCache]: Analyzing trace with hash 167538580, now seen corresponding path program 1 times [2020-10-20 00:43:53,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 00:43:53,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [403676213] [2020-10-20 00:43:53,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 00:43:53,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:43:53,209 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:43:53,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 00:43:53,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 00:43:53,317 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 00:43:53,318 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 00:43:53,318 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 00:43:53,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 12:43:53 BoogieIcfgContainer [2020-10-20 00:43:53,360 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 00:43:53,360 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 00:43:53,360 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 00:43:53,361 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 00:43:53,361 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 12:43:52" (3/4) ... [2020-10-20 00:43:53,364 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 00:43:53,418 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 00:43:53,419 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 00:43:53,421 INFO L168 Benchmark]: Toolchain (without parser) took 1250.20 ms. Allocated memory was 41.4 MB in the beginning and 44.0 MB in the end (delta: 2.6 MB). Free memory was 20.2 MB in the beginning and 16.0 MB in the end (delta: 4.2 MB). Peak memory consumption was 6.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,422 INFO L168 Benchmark]: CDTParser took 0.82 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.5 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,423 INFO L168 Benchmark]: CACSL2BoogieTranslator took 297.86 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 19.3 MB in the beginning and 21.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,424 INFO L168 Benchmark]: Boogie Procedure Inliner took 37.37 ms. Allocated memory is still 41.9 MB. Free memory was 21.4 MB in the beginning and 19.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,425 INFO L168 Benchmark]: Boogie Preprocessor took 26.50 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 18.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,426 INFO L168 Benchmark]: RCFGBuilder took 339.53 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 18.2 MB in the beginning and 19.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,427 INFO L168 Benchmark]: TraceAbstraction took 474.92 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 19.3 MB in the beginning and 18.8 MB in the end (delta: 505.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,428 INFO L168 Benchmark]: Witness Printer took 58.50 ms. Allocated memory is still 44.0 MB. Free memory was 18.8 MB in the beginning and 16.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 00:43:53,434 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.82 ms. Allocated memory is still 31.5 MB. Free memory was 8.6 MB in the beginning and 8.5 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 297.86 ms. Allocated memory was 41.4 MB in the beginning and 41.9 MB in the end (delta: 524.3 kB). Free memory was 19.3 MB in the beginning and 21.6 MB in the end (delta: -2.3 MB). Peak memory consumption was 10.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 37.37 ms. Allocated memory is still 41.9 MB. Free memory was 21.4 MB in the beginning and 19.7 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 26.50 ms. Allocated memory is still 41.9 MB. Free memory was 19.7 MB in the beginning and 18.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 14.3 GB. * RCFGBuilder took 339.53 ms. Allocated memory was 41.9 MB in the beginning and 43.5 MB in the end (delta: 1.6 MB). Free memory was 18.2 MB in the beginning and 19.7 MB in the end (delta: -1.5 MB). Peak memory consumption was 9.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 474.92 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 19.3 MB in the beginning and 18.8 MB in the end (delta: 505.3 kB). Peak memory consumption was 1.0 MB. Max. memory is 14.3 GB. * Witness Printer took 58.50 ms. Allocated memory is still 44.0 MB. Free memory was 18.8 MB in the beginning and 16.0 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 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: [L11] struct dummy d1, d2; VAL [d1={5:0}, d2={9:0}] [L15] d1.a = __VERIFIER_nondet_int() [L16] d1.b = __VERIFIER_nondet_int() [L18] d2.a = __VERIFIER_nondet_int() [L19] d2.b = __VERIFIER_nondet_int() [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={5:0}, d2={9:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L24] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 VAL [d1={5:0}, d2={9:0}] [L24] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L35] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L36] COND TRUE pd1 != 0 && pd1 == pd2 [L29] EXPR s1->a [L29] EXPR s2->b [L29] return s1->a == s2->b; [L37] COND TRUE !check(pd1, pd2) [L3] __assert_fail("0", "test21-2.c", 3, "reach_error") VAL [d1={5:0}, d2={9:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 19 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.3s, 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=19occurred 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, 0.1s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 13 NumberOfCodeBlocks, 13 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...