./Ultimate.py --spec ../sv-benchmarks/c/properties/unreach-call.prp --file ../sv-benchmarks/c/bitvector-regression/signextension-1.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/bitvector-regression/signextension-1.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 0c1193366da6b600000e2fc611882eef3ca358d3 .................................................................................................................................................................................................................................. 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 [2020-10-19 22:22:51,951 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-19 22:22:51,956 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-19 22:22:51,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-19 22:22:51,996 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-19 22:22:52,005 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-19 22:22:52,007 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-19 22:22:52,010 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-19 22:22:52,012 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-19 22:22:52,014 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-19 22:22:52,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-19 22:22:52,018 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-19 22:22:52,019 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-19 22:22:52,022 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-19 22:22:52,024 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-19 22:22:52,025 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-19 22:22:52,026 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-19 22:22:52,029 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-19 22:22:52,031 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-19 22:22:52,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-19 22:22:52,038 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-19 22:22:52,040 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-19 22:22:52,041 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-19 22:22:52,042 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-19 22:22:52,051 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-19 22:22:52,053 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-19 22:22:52,053 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-19 22:22:52,054 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-19 22:22:52,056 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-19 22:22:52,057 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-19 22:22:52,059 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-19 22:22:52,060 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-19 22:22:52,061 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-19 22:22:52,062 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-19 22:22:52,069 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-19 22:22:52,070 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-19 22:22:52,071 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-19 22:22:52,071 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-19 22:22:52,071 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-19 22:22:52,072 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-19 22:22:52,073 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-19 22:22:52,074 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-19 22:22:52,113 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-19 22:22:52,115 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-19 22:22:52,117 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-19 22:22:52,117 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-19 22:22:52,118 INFO L138 SettingsManager]: * Use SBE=true [2020-10-19 22:22:52,118 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-19 22:22:52,118 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-19 22:22:52,118 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-19 22:22:52,119 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-19 22:22:52,119 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-19 22:22:52,120 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-19 22:22:52,120 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-19 22:22:52,121 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-19 22:22:52,121 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-19 22:22:52,121 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-19 22:22:52,122 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-19 22:22:52,122 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-19 22:22:52,122 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-19 22:22:52,122 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-19 22:22:52,123 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-19 22:22:52,123 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-19 22:22:52,123 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-19 22:22:52,124 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-19 22:22:52,124 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-19 22:22:52,124 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-19 22:22:52,124 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-19 22:22:52,125 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-19 22:22:52,125 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-19 22:22:52,125 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-19 22:22:52,125 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 -> 0c1193366da6b600000e2fc611882eef3ca358d3 [2020-10-19 22:22:52,321 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-19 22:22:52,337 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-19 22:22:52,341 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-19 22:22:52,342 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-19 22:22:52,343 INFO L275 PluginConnector]: CDTParser initialized [2020-10-19 22:22:52,344 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/bitvector-regression/signextension-1.c [2020-10-19 22:22:52,407 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3247c2f/89f624b717dc428ab16f5a4e341a2ab3/FLAG4f3376d38 [2020-10-19 22:22:52,869 INFO L306 CDTParser]: Found 1 translation units. [2020-10-19 22:22:52,869 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/bitvector-regression/signextension-1.c [2020-10-19 22:22:52,875 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3247c2f/89f624b717dc428ab16f5a4e341a2ab3/FLAG4f3376d38 [2020-10-19 22:22:53,171 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3c3247c2f/89f624b717dc428ab16f5a4e341a2ab3 [2020-10-19 22:22:53,175 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-19 22:22:53,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2020-10-19 22:22:53,183 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:53,183 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-19 22:22:53,187 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-19 22:22:53,188 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,193 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@626752ec and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53, skipping insertion in model container [2020-10-19 22:22:53,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,205 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-19 22:22:53,226 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-19 22:22:53,462 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:53,477 INFO L203 MainTranslator]: Completed pre-run [2020-10-19 22:22:53,504 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-19 22:22:53,516 INFO L208 MainTranslator]: Completed translation [2020-10-19 22:22:53,517 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53 WrapperNode [2020-10-19 22:22:53,517 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-19 22:22:53,518 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:53,518 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2020-10-19 22:22:53,518 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2020-10-19 22:22:53,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,536 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,556 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2020-10-19 22:22:53,557 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-19 22:22:53,557 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-19 22:22:53,557 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-19 22:22:53,567 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,567 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,568 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,569 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,572 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,575 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (1/1) ... [2020-10-19 22:22:53,578 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-19 22:22:53,578 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-19 22:22:53,578 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-19 22:22:53,579 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-19 22:22:53,580 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (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 [2020-10-19 22:22:53,652 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-19 22:22:53,652 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-19 22:22:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-19 22:22:53,653 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-19 22:22:53,864 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-19 22:22:53,865 INFO L298 CfgBuilder]: Removed 6 assume(true) statements. [2020-10-19 22:22:53,866 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:53 BoogieIcfgContainer [2020-10-19 22:22:53,867 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-19 22:22:53,868 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-19 22:22:53,869 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-19 22:22:53,879 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-19 22:22:53,880 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.10 10:22:53" (1/3) ... [2020-10-19 22:22:53,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d5408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:53, skipping insertion in model container [2020-10-19 22:22:53,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.10 10:22:53" (2/3) ... [2020-10-19 22:22:53,881 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@40d5408 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.10 10:22:53, skipping insertion in model container [2020-10-19 22:22:53,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:53" (3/3) ... [2020-10-19 22:22:53,884 INFO L111 eAbstractionObserver]: Analyzing ICFG signextension-1.c [2020-10-19 22:22:53,897 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-19 22:22:53,905 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-19 22:22:53,925 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-19 22:22:53,955 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-19 22:22:53,955 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-19 22:22:53,955 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-19 22:22:53,956 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-19 22:22:53,956 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-19 22:22:53,956 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-19 22:22:53,956 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-19 22:22:53,957 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-19 22:22:53,980 INFO L276 IsEmpty]: Start isEmpty. Operand 9 states. [2020-10-19 22:22:53,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2020-10-19 22:22:53,996 INFO L414 BasicCegarLoop]: Found error trace [2020-10-19 22:22:53,997 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2020-10-19 22:22:54,001 INFO L429 AbstractCegarLoop]: === Iteration 1 === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-19 22:22:54,012 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-19 22:22:54,015 INFO L82 PathProgramCache]: Analyzing trace with hash 925607, now seen corresponding path program 1 times [2020-10-19 22:22:54,035 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-19 22:22:54,040 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1966651585] [2020-10-19 22:22:54,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-19 22:22:54,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:54,159 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:54,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-19 22:22:54,187 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-19 22:22:54,211 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-19 22:22:54,212 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-19 22:22:54,212 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-19 22:22:54,237 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.10 10:22:54 BoogieIcfgContainer [2020-10-19 22:22:54,237 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-19 22:22:54,238 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-19 22:22:54,238 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-19 22:22:54,238 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-19 22:22:54,239 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.10 10:22:53" (3/4) ... [2020-10-19 22:22:54,242 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-19 22:22:54,296 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-19 22:22:54,297 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-19 22:22:54,304 INFO L168 Benchmark]: Toolchain (without parser) took 1122.43 ms. Allocated memory was 41.9 MB in the beginning and 45.1 MB in the end (delta: 3.1 MB). Free memory was 22.5 MB in the beginning and 11.5 MB in the end (delta: 11.0 MB). Peak memory consumption was 14.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:54,306 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 32.0 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. [2020-10-19 22:22:54,309 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.74 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 24.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:54,310 INFO L168 Benchmark]: Boogie Procedure Inliner took 38.68 ms. Allocated memory is still 42.5 MB. Free memory was 24.0 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:54,312 INFO L168 Benchmark]: Boogie Preprocessor took 21.17 ms. Allocated memory is still 42.5 MB. Free memory was 22.3 MB in the beginning and 21.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:54,315 INFO L168 Benchmark]: RCFGBuilder took 288.83 ms. Allocated memory is still 42.5 MB. Free memory was 21.2 MB in the beginning and 10.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:54,316 INFO L168 Benchmark]: TraceAbstraction took 369.15 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 9.7 MB in the beginning and 13.7 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 14.3 GB. [2020-10-19 22:22:54,320 INFO L168 Benchmark]: Witness Printer took 59.29 ms. Allocated memory is still 45.1 MB. Free memory was 13.5 MB in the beginning and 11.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 MB. Max. memory is 14.3 GB. [2020-10-19 22:22:54,327 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 32.0 MB. Free memory was 9.6 MB in the beginning and 9.5 MB in the end (delta: 47.5 kB). Peak memory consumption was 47.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 334.74 ms. Allocated memory was 41.9 MB in the beginning and 42.5 MB in the end (delta: 524.3 kB). Free memory was 21.6 MB in the beginning and 24.0 MB in the end (delta: -2.4 MB). Peak memory consumption was 12.6 MB. Max. memory is 14.3 GB. * Boogie Procedure Inliner took 38.68 ms. Allocated memory is still 42.5 MB. Free memory was 24.0 MB in the beginning and 22.3 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 21.17 ms. Allocated memory is still 42.5 MB. Free memory was 22.3 MB in the beginning and 21.2 MB in the end (delta: 1.1 MB). Peak memory consumption was 1.1 MB. Max. memory is 14.3 GB. * RCFGBuilder took 288.83 ms. Allocated memory is still 42.5 MB. Free memory was 21.2 MB in the beginning and 10.2 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 14.3 GB. * TraceAbstraction took 369.15 ms. Allocated memory was 42.5 MB in the beginning and 45.1 MB in the end (delta: 2.6 MB). Free memory was 9.7 MB in the beginning and 13.7 MB in the end (delta: -4.0 MB). There was no memory consumed. Max. memory is 14.3 GB. * Witness Printer took 59.29 ms. Allocated memory is still 45.1 MB. Free memory was 13.5 MB in the beginning and 11.5 MB in the end (delta: 1.9 MB). Peak memory consumption was 1.9 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: [L7] unsigned short int allbits = -1; [L8] short int signedallbits = allbits; [L9] int unsignedtosigned = allbits; [L10] unsigned int unsignedtounsigned = allbits; [L11] int signedtosigned = signedallbits; [L12] unsigned int signedtounsigned = signedallbits; [L21-L22] COND TRUE unsignedtosigned == 65535 && unsignedtounsigned == 65535 && signedtosigned == -1 && signedtounsigned == 4294967295 [L3] __assert_fail("0", "signextension-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 9 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=9occurred 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, 4 NumberOfCodeBlocks, 4 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...