/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test21-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-5644d1e-m [2020-08-18 22:44:24,149 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-18 22:44:24,151 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-18 22:44:24,186 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-18 22:44:24,186 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-18 22:44:24,195 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-18 22:44:24,198 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-18 22:44:24,202 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-18 22:44:24,205 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-18 22:44:24,208 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-18 22:44:24,208 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-18 22:44:24,210 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-18 22:44:24,210 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-18 22:44:24,214 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-18 22:44:24,217 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-18 22:44:24,218 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-18 22:44:24,220 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-18 22:44:24,221 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-18 22:44:24,222 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-18 22:44:24,230 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-18 22:44:24,232 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-18 22:44:24,233 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-18 22:44:24,234 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-18 22:44:24,235 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-18 22:44:24,247 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-18 22:44:24,248 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-18 22:44:24,248 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-18 22:44:24,252 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-18 22:44:24,253 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-18 22:44:24,253 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-18 22:44:24,254 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-18 22:44:24,257 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-18 22:44:24,257 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-18 22:44:24,261 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-18 22:44:24,262 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-18 22:44:24,266 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-18 22:44:24,266 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-18 22:44:24,267 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-18 22:44:24,267 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-18 22:44:24,268 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-18 22:44:24,269 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-18 22:44:24,270 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-18 22:44:24,294 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-18 22:44:24,294 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-18 22:44:24,296 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-18 22:44:24,296 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-18 22:44:24,296 INFO L138 SettingsManager]: * Use SBE=true [2020-08-18 22:44:24,296 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-18 22:44:24,297 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-18 22:44:24,297 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-18 22:44:24,297 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-18 22:44:24,297 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-18 22:44:24,297 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-18 22:44:24,297 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-18 22:44:24,298 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-18 22:44:24,298 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-18 22:44:24,298 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-18 22:44:24,298 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-18 22:44:24,298 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-18 22:44:24,299 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-18 22:44:24,299 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-18 22:44:24,299 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-18 22:44:24,299 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-18 22:44:24,299 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-18 22:44:24,300 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-18 22:44:24,300 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-18 22:44:24,300 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-18 22:44:24,300 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-18 22:44:24,300 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-18 22:44:24,301 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-18 22:44:24,301 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-18 22:44:24,301 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5;interpolation-heuristic=WIDEST; [2020-08-18 22:44:24,581 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-18 22:44:24,593 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-18 22:44:24,599 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-18 22:44:24,600 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-18 22:44:24,600 INFO L275 PluginConnector]: CDTParser initialized [2020-08-18 22:44:24,601 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test21-2.c [2020-08-18 22:44:24,679 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b7a06528/af7d1172eead45b98233e3159d54d73e/FLAG9d41bb4cf [2020-08-18 22:44:25,129 INFO L306 CDTParser]: Found 1 translation units. [2020-08-18 22:44:25,130 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test21-2.c [2020-08-18 22:44:25,138 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b7a06528/af7d1172eead45b98233e3159d54d73e/FLAG9d41bb4cf [2020-08-18 22:44:25,563 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0b7a06528/af7d1172eead45b98233e3159d54d73e [2020-08-18 22:44:25,572 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-18 22:44:25,574 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-18 22:44:25,575 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-18 22:44:25,575 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-18 22:44:25,578 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-18 22:44:25,579 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,582 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@c1aa6c6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25, skipping insertion in model container [2020-08-18 22:44:25,582 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,589 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-18 22:44:25,607 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-18 22:44:25,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:44:25,795 INFO L203 MainTranslator]: Completed pre-run [2020-08-18 22:44:25,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-18 22:44:25,827 INFO L208 MainTranslator]: Completed translation [2020-08-18 22:44:25,828 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25 WrapperNode [2020-08-18 22:44:25,828 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-18 22:44:25,829 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-18 22:44:25,829 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-18 22:44:25,829 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-18 22:44:25,909 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,909 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,918 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,918 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... [2020-08-18 22:44:25,932 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-18 22:44:25,933 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-18 22:44:25,933 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-18 22:44:25,933 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-18 22:44:25,934 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-08-18 22:44:25,999 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-18 22:44:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-18 22:44:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure init [2020-08-18 22:44:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure get_dummy [2020-08-18 22:44:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure check [2020-08-18 22:44:26,000 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-18 22:44:26,000 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-18 22:44:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-18 22:44:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-08-18 22:44:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure init [2020-08-18 22:44:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-18 22:44:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure get_dummy [2020-08-18 22:44:26,001 INFO L130 BoogieDeclarations]: Found specification of procedure check [2020-08-18 22:44:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-18 22:44:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-18 22:44:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-18 22:44:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-18 22:44:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-18 22:44:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-18 22:44:26,002 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-18 22:44:26,234 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-18 22:44:26,234 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-18 22:44:26,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:44:26 BoogieIcfgContainer [2020-08-18 22:44:26,238 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-18 22:44:26,240 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-18 22:44:26,240 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-18 22:44:26,243 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-18 22:44:26,243 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.08 10:44:25" (1/3) ... [2020-08-18 22:44:26,244 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a7d1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:44:26, skipping insertion in model container [2020-08-18 22:44:26,244 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.08 10:44:25" (2/3) ... [2020-08-18 22:44:26,245 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a7d1cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.08 10:44:26, skipping insertion in model container [2020-08-18 22:44:26,245 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.08 10:44:26" (3/3) ... [2020-08-18 22:44:26,247 INFO L109 eAbstractionObserver]: Analyzing ICFG test21-2.c [2020-08-18 22:44:26,259 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-18 22:44:26,269 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-18 22:44:26,288 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-18 22:44:26,326 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-18 22:44:26,326 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-18 22:44:26,326 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-18 22:44:26,327 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-18 22:44:26,327 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-18 22:44:26,327 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-18 22:44:26,327 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-18 22:44:26,327 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-18 22:44:26,385 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-08-18 22:44:26,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-18 22:44:26,395 INFO L414 BasicCegarLoop]: Found error trace [2020-08-18 22:44:26,396 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-18 22:44:26,397 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-18 22:44:26,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-18 22:44:26,403 INFO L82 PathProgramCache]: Analyzing trace with hash -1351082661, now seen corresponding path program 1 times [2020-08-18 22:44:26,409 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-18 22:44:26,410 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690781255] [2020-08-18 22:44:26,410 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-18 22:44:26,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-18 22:44:26,582 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-18 22:44:26,583 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-18 22:44:26,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-18 22:44:26,604 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.08 10:44:26 BoogieIcfgContainer [2020-08-18 22:44:26,604 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-18 22:44:26,607 INFO L168 Benchmark]: Toolchain (without parser) took 1032.51 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 103.1 MB in the beginning and 148.4 MB in the end (delta: -45.3 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:26,608 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-18 22:44:26,609 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.82 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:26,611 INFO L168 Benchmark]: Boogie Preprocessor took 103.88 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.6 MB in the beginning and 179.1 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:26,612 INFO L168 Benchmark]: RCFGBuilder took 305.57 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 162.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:26,612 INFO L168 Benchmark]: TraceAbstraction took 364.43 ms. Allocated memory is still 201.9 MB. Free memory was 162.0 MB in the beginning and 148.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-18 22:44:26,617 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 140.0 MB. Free memory was 121.5 MB in the beginning and 121.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.82 ms. Allocated memory is still 140.0 MB. Free memory was 102.9 MB in the beginning and 92.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 103.88 ms. Allocated memory was 140.0 MB in the beginning and 201.9 MB in the end (delta: 61.9 MB). Free memory was 92.6 MB in the beginning and 179.1 MB in the end (delta: -86.5 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 305.57 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 162.0 MB in the end (delta: 17.2 MB). Peak memory consumption was 17.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 364.43 ms. Allocated memory is still 201.9 MB. Free memory was 162.0 MB in the beginning and 148.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 42]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L9] struct dummy d1, d2; [L32] CALL init() [L13] d1.a = __VERIFIER_nondet_int() [L14] d1.b = __VERIFIER_nondet_int() [L16] d2.a = __VERIFIER_nondet_int() [L17] d2.b = __VERIFIER_nondet_int() [L32] RET init() [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L33] CALL, EXPR get_dummy() [L22] EXPR __VERIFIER_nondet_bool() ? &d1 : &d2 [L22] return (__VERIFIER_nondet_bool() ? &d1 : &d2); [L33] RET, EXPR get_dummy() [L33] struct dummy *pd1 = get_dummy(), *pd2 = get_dummy(); [L34] COND TRUE pd1 != 0 && pd1 == pd2 [L35] CALL, EXPR check(pd1, pd2) [L27] EXPR s1->a [L27] EXPR s2->b [L27] return s1->a == s2->b; [L35] RET, EXPR check(pd1, pd2) [L35] COND TRUE !check(pd1, pd2) [L42] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.2s, OverallIterations: 1, TraceHistogramMax: 2, 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=31occurred 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, 29 NumberOfCodeBlocks, 29 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...