/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=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/ldv-regression/test30-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-89f541c [2020-08-28 06:05:21,172 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-28 06:05:21,177 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-28 06:05:21,223 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-28 06:05:21,225 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-28 06:05:21,237 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-28 06:05:21,238 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-28 06:05:21,242 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-28 06:05:21,246 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-28 06:05:21,249 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-28 06:05:21,251 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-28 06:05:21,253 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-28 06:05:21,254 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-28 06:05:21,257 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-28 06:05:21,260 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-28 06:05:21,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-28 06:05:21,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-28 06:05:21,265 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-28 06:05:21,267 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-28 06:05:21,277 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-28 06:05:21,280 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-28 06:05:21,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-28 06:05:21,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-28 06:05:21,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-28 06:05:21,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-28 06:05:21,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-28 06:05:21,287 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-28 06:05:21,290 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-28 06:05:21,291 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-28 06:05:21,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-28 06:05:21,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-28 06:05:21,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-28 06:05:21,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-28 06:05:21,297 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-28 06:05:21,298 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-28 06:05:21,298 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-28 06:05:21,299 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-28 06:05:21,299 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-28 06:05:21,300 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-28 06:05:21,301 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-28 06:05:21,303 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-28 06:05:21,304 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 [2020-08-28 06:05:21,351 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-28 06:05:21,351 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-28 06:05:21,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-28 06:05:21,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-28 06:05:21,353 INFO L138 SettingsManager]: * Use SBE=true [2020-08-28 06:05:21,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-28 06:05:21,354 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-28 06:05:21,354 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-28 06:05:21,354 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-28 06:05:21,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-28 06:05:21,355 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-28 06:05:21,355 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-28 06:05:21,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-28 06:05:21,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-28 06:05:21,356 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-28 06:05:21,356 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-28 06:05:21,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-28 06:05:21,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-28 06:05:21,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-28 06:05:21,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-28 06:05:21,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-28 06:05:21,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-28 06:05:21,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-28 06:05:21,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-28 06:05:21,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-28 06:05:21,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-28 06:05:21,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-28 06:05:21,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-28 06:05:21,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-28 06:05:21,359 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=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-08-28 06:05:21,819 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-28 06:05:21,847 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-28 06:05:21,854 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-28 06:05:21,856 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-28 06:05:21,856 INFO L275 PluginConnector]: CDTParser initialized [2020-08-28 06:05:21,857 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/test30-2.c [2020-08-28 06:05:21,953 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25b70917/a197659fa5cd4eab81b3d94f4a3f5c6f/FLAG999e49631 [2020-08-28 06:05:22,504 INFO L306 CDTParser]: Found 1 translation units. [2020-08-28 06:05:22,505 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/test30-2.c [2020-08-28 06:05:22,514 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25b70917/a197659fa5cd4eab81b3d94f4a3f5c6f/FLAG999e49631 [2020-08-28 06:05:22,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c25b70917/a197659fa5cd4eab81b3d94f4a3f5c6f [2020-08-28 06:05:22,853 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-28 06:05:22,855 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-28 06:05:22,856 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-28 06:05:22,856 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-28 06:05:22,860 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-28 06:05:22,861 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:05:22" (1/1) ... [2020-08-28 06:05:22,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7e979d3d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:22, skipping insertion in model container [2020-08-28 06:05:22,866 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.08 06:05:22" (1/1) ... [2020-08-28 06:05:22,875 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-28 06:05:22,898 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-28 06:05:23,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 06:05:23,142 INFO L203 MainTranslator]: Completed pre-run [2020-08-28 06:05:23,162 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-28 06:05:23,185 INFO L208 MainTranslator]: Completed translation [2020-08-28 06:05:23,186 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23 WrapperNode [2020-08-28 06:05:23,186 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-28 06:05:23,187 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-28 06:05:23,187 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-28 06:05:23,187 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-28 06:05:23,279 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (1/1) ... [2020-08-28 06:05:23,279 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (1/1) ... [2020-08-28 06:05:23,292 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (1/1) ... [2020-08-28 06:05:23,293 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (1/1) ... [2020-08-28 06:05:23,301 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (1/1) ... [2020-08-28 06:05:23,304 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (1/1) ... [2020-08-28 06:05:23,306 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (1/1) ... [2020-08-28 06:05:23,308 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-28 06:05:23,309 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-28 06:05:23,309 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-28 06:05:23,309 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-28 06:05:23,310 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (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 [2020-08-28 06:05:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-28 06:05:23,380 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-28 06:05:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assign [2020-08-28 06:05:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure assign2 [2020-08-28 06:05:23,381 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-28 06:05:23,381 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-28 06:05:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure assign [2020-08-28 06:05:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-28 06:05:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-28 06:05:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure assign2 [2020-08-28 06:05:23,382 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-28 06:05:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-28 06:05:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-28 06:05:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-28 06:05:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-28 06:05:23,383 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-08-28 06:05:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-28 06:05:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-28 06:05:23,384 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-28 06:05:23,683 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-28 06:05:23,693 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-28 06:05:23,703 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:05:23 BoogieIcfgContainer [2020-08-28 06:05:23,703 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-28 06:05:23,705 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-28 06:05:23,705 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-28 06:05:23,710 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-28 06:05:23,710 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.08 06:05:22" (1/3) ... [2020-08-28 06:05:23,711 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3981ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:05:23, skipping insertion in model container [2020-08-28 06:05:23,711 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.08 06:05:23" (2/3) ... [2020-08-28 06:05:23,713 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5e3981ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.08 06:05:23, skipping insertion in model container [2020-08-28 06:05:23,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.08 06:05:23" (3/3) ... [2020-08-28 06:05:23,715 INFO L109 eAbstractionObserver]: Analyzing ICFG test30-2.c [2020-08-28 06:05:23,726 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-28 06:05:23,734 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-28 06:05:23,756 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-28 06:05:23,785 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-28 06:05:23,785 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-28 06:05:23,785 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-28 06:05:23,785 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-28 06:05:23,785 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-28 06:05:23,785 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-28 06:05:23,785 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-28 06:05:23,786 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-28 06:05:23,806 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states. [2020-08-28 06:05:23,814 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-08-28 06:05:23,814 INFO L414 BasicCegarLoop]: Found error trace [2020-08-28 06:05:23,815 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-28 06:05:23,816 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-28 06:05:23,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-28 06:05:23,822 INFO L82 PathProgramCache]: Analyzing trace with hash -457594768, now seen corresponding path program 1 times [2020-08-28 06:05:23,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-28 06:05:23,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [650239458] [2020-08-28 06:05:23,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-28 06:05:24,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-28 06:05:24,025 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-28 06:05:24,026 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-28 06:05:24,031 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-28 06:05:24,053 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.08 06:05:24 BoogieIcfgContainer [2020-08-28 06:05:24,054 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-28 06:05:24,058 INFO L168 Benchmark]: Toolchain (without parser) took 1201.43 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 103.6 MB in the beginning and 151.3 MB in the end (delta: -47.7 MB). Peak memory consumption was 15.2 MB. Max. memory is 7.1 GB. [2020-08-28 06:05:24,059 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-28 06:05:24,060 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.21 ms. Allocated memory is still 140.5 MB. Free memory was 103.4 MB in the beginning and 92.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-08-28 06:05:24,061 INFO L168 Benchmark]: Boogie Preprocessor took 121.79 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-08-28 06:05:24,062 INFO L168 Benchmark]: RCFGBuilder took 394.56 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 164.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. [2020-08-28 06:05:24,063 INFO L168 Benchmark]: TraceAbstraction took 349.33 ms. Allocated memory is still 203.4 MB. Free memory was 164.2 MB in the beginning and 151.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-08-28 06:05:24,067 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.21 ms. Allocated memory is still 140.5 MB. Free memory was 103.4 MB in the beginning and 92.8 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.79 ms. Allocated memory was 140.5 MB in the beginning and 203.4 MB in the end (delta: 62.9 MB). Free memory was 92.8 MB in the beginning and 181.4 MB in the end (delta: -88.6 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 394.56 ms. Allocated memory is still 203.4 MB. Free memory was 181.4 MB in the beginning and 164.9 MB in the end (delta: 16.6 MB). Peak memory consumption was 16.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 349.33 ms. Allocated memory is still 203.4 MB. Free memory was 164.2 MB in the beginning and 151.3 MB in the end (delta: 13.0 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 31]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L3] int a = 1, b; [L5-L7] struct dummy { int *a, *b; } global = {&a, &b}; [L21] struct dummy *pd = &global; [L23] CALL assign2(&pd->a, &pd->b) [L16] EXPR \read(**pb) [L16] EXPR \read(**pb) [L16] CALL assign(*pb, *pb) [L11] EXPR \read(*pb) [L11] *pa = *pb [L16] RET assign(*pb, *pb) [L23] RET assign2(&pd->a, &pd->b) [L25] EXPR \read(a) [L25] EXPR \read(b) [L25] COND TRUE a != b [L31] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 23 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=23occurred 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, 18 NumberOfCodeBlocks, 18 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...