/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/nested_structure_noptr-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 05:28:56,208 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 05:28:56,210 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 05:28:56,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 05:28:56,234 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 05:28:56,235 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 05:28:56,237 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 05:28:56,238 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 05:28:56,240 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 05:28:56,241 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 05:28:56,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 05:28:56,243 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 05:28:56,243 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 05:28:56,244 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 05:28:56,245 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 05:28:56,246 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 05:28:56,247 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 05:28:56,248 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 05:28:56,250 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 05:28:56,254 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 05:28:56,256 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 05:28:56,257 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 05:28:56,258 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 05:28:56,262 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 05:28:56,266 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 05:28:56,267 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 05:28:56,267 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 05:28:56,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 05:28:56,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 05:28:56,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 05:28:56,273 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 05:28:56,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 05:28:56,274 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 05:28:56,275 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 05:28:56,276 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 05:28:56,277 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 05:28:56,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 05:28:56,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 05:28:56,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 05:28:56,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 05:28:56,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 05:28:56,282 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 [2020-08-22 05:28:56,328 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 05:28:56,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 05:28:56,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 05:28:56,331 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 05:28:56,331 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 05:28:56,331 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 05:28:56,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 05:28:56,332 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 05:28:56,332 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 05:28:56,332 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 05:28:56,333 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 05:28:56,333 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 05:28:56,333 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 05:28:56,334 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 05:28:56,334 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 05:28:56,334 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 05:28:56,334 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 05:28:56,335 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 05:28:56,335 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 05:28:56,335 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 05:28:56,335 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 05:28:56,336 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 05:28:56,336 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 05:28:56,336 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 05:28:56,336 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 05:28:56,336 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 05:28:56,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 05:28:56,337 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 05:28:56,337 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 05:28:56,337 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; [2020-08-22 05:28:56,702 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 05:28:56,715 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 05:28:56,718 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 05:28:56,720 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 05:28:56,720 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 05:28:56,721 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure_noptr-2.i [2020-08-22 05:28:56,799 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7142b797a/87d7e3ccb93b4edfa0511908c3b26a51/FLAG613b40b3c [2020-08-22 05:28:57,212 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 05:28:57,213 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure_noptr-2.i [2020-08-22 05:28:57,219 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7142b797a/87d7e3ccb93b4edfa0511908c3b26a51/FLAG613b40b3c [2020-08-22 05:28:57,647 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7142b797a/87d7e3ccb93b4edfa0511908c3b26a51 [2020-08-22 05:28:57,654 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 05:28:57,656 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 05:28:57,657 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:57,657 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 05:28:57,661 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 05:28:57,662 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:57,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@445b6256 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57, skipping insertion in model container [2020-08-22 05:28:57,665 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:57,673 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 05:28:57,694 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 05:28:57,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:57,933 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 05:28:57,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 05:28:57,967 INFO L208 MainTranslator]: Completed translation [2020-08-22 05:28:57,967 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57 WrapperNode [2020-08-22 05:28:57,968 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 05:28:57,968 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 05:28:57,969 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 05:28:57,969 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 05:28:58,065 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:58,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:58,074 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:58,074 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:58,081 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:58,083 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:58,085 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (1/1) ... [2020-08-22 05:28:58,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 05:28:58,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 05:28:58,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 05:28:58,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 05:28:58,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (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 [2020-08-22 05:28:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 05:28:58,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 05:28:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-08-22 05:28:58,152 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 05:28:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 05:28:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-08-22 05:28:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 05:28:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 05:28:58,152 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-08-22 05:28:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 05:28:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 05:28:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 05:28:58,153 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 05:28:58,154 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 05:28:58,356 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 05:28:58,358 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-08-22 05:28:58,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:58 BoogieIcfgContainer [2020-08-22 05:28:58,368 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 05:28:58,369 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 05:28:58,370 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 05:28:58,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 05:28:58,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 05:28:57" (1/3) ... [2020-08-22 05:28:58,381 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e562b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:58, skipping insertion in model container [2020-08-22 05:28:58,381 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 05:28:57" (2/3) ... [2020-08-22 05:28:58,382 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2e562b12 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 05:28:58, skipping insertion in model container [2020-08-22 05:28:58,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 05:28:58" (3/3) ... [2020-08-22 05:28:58,387 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure_noptr-2.i [2020-08-22 05:28:58,407 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 05:28:58,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 05:28:58,428 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 05:28:58,453 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 05:28:58,454 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 05:28:58,454 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 05:28:58,454 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 05:28:58,454 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 05:28:58,454 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 05:28:58,455 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 05:28:58,455 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 05:28:58,471 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-08-22 05:28:58,476 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-08-22 05:28:58,476 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 05:28:58,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 05:28:58,477 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 05:28:58,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 05:28:58,482 INFO L82 PathProgramCache]: Analyzing trace with hash -1215743292, now seen corresponding path program 1 times [2020-08-22 05:28:58,489 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 05:28:58,495 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [994879969] [2020-08-22 05:28:58,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 05:28:58,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,696 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 05:28:58,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 05:28:58,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 05:28:58,711 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [994879969] [2020-08-22 05:28:58,713 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 05:28:58,713 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 05:28:58,714 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1148746050] [2020-08-22 05:28:58,719 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 05:28:58,719 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 05:28:58,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 05:28:58,731 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:28:58,732 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-08-22 05:28:58,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 05:28:58,791 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-08-22 05:28:58,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 05:28:58,793 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-08-22 05:28:58,794 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 05:28:58,802 INFO L225 Difference]: With dead ends: 22 [2020-08-22 05:28:58,802 INFO L226 Difference]: Without dead ends: 0 [2020-08-22 05:28:58,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 05:28:58,821 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-08-22 05:28:58,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-08-22 05:28:58,827 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-08-22 05:28:58,828 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-08-22 05:28:58,829 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-08-22 05:28:58,829 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 05:28:58,830 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-08-22 05:28:58,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 05:28:58,830 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-08-22 05:28:58,830 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-08-22 05:28:58,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 05:28:58,833 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-08-22 05:28:58,896 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-08-22 05:28:58,897 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-08-22 05:28:58,897 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-08-22 05:28:58,898 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 10) no Hoare annotation was computed. [2020-08-22 05:28:58,898 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 8 11) no Hoare annotation was computed. [2020-08-22 05:28:58,899 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 8 11) no Hoare annotation was computed. [2020-08-22 05:28:58,899 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 8 11) the Hoare annotation is: true [2020-08-22 05:28:58,899 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-08-22 05:28:58,900 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-08-22 05:28:58,900 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-08-22 05:28:58,900 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-08-22 05:28:58,900 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 25 31) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-08-22 05:28:58,900 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-08-22 05:28:58,901 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 25 31) no Hoare annotation was computed. [2020-08-22 05:28:58,901 INFO L264 CegarLoopResult]: At program point L29-2(line 29) the Hoare annotation is: false [2020-08-22 05:28:58,901 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-08-22 05:28:58,901 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 25 31) no Hoare annotation was computed. [2020-08-22 05:28:58,908 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 05:28:58 BoogieIcfgContainer [2020-08-22 05:28:58,908 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 05:28:58,911 INFO L168 Benchmark]: Toolchain (without parser) took 1253.87 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 100.7 MB in the beginning and 135.7 MB in the end (delta: -35.0 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:58,912 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 05:28:58,913 INFO L168 Benchmark]: CACSL2BoogieTranslator took 311.19 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:58,914 INFO L168 Benchmark]: Boogie Preprocessor took 123.97 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 176.3 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:58,915 INFO L168 Benchmark]: RCFGBuilder took 275.31 ms. Allocated memory is still 198.7 MB. Free memory was 175.6 MB in the beginning and 163.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:58,916 INFO L168 Benchmark]: TraceAbstraction took 538.54 ms. Allocated memory is still 198.7 MB. Free memory was 163.2 MB in the beginning and 135.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. [2020-08-22 05:28:58,921 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 137.4 MB. Free memory was 118.9 MB in the beginning and 118.7 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 311.19 ms. Allocated memory is still 137.4 MB. Free memory was 100.4 MB in the beginning and 90.6 MB in the end (delta: 9.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.97 ms. Allocated memory was 137.4 MB in the beginning and 198.7 MB in the end (delta: 61.3 MB). Free memory was 90.6 MB in the beginning and 176.3 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 275.31 ms. Allocated memory is still 198.7 MB. Free memory was 175.6 MB in the beginning and 163.9 MB in the end (delta: 11.6 MB). Peak memory consumption was 11.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 538.54 ms. Allocated memory is still 198.7 MB. Free memory was 163.2 MB in the beginning and 135.7 MB in the end (delta: 27.6 MB). Peak memory consumption was 27.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 10]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 8 SDtfs, 1 SDslu, 11 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=17occurred 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 6 LocationsWithAnnotation, 6 PreInvPairs, 6 NumberOfFragments, 17 HoareAnnotationTreeSize, 6 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 6 FomulaSimplificationsInter, 7 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 9 NumberOfCodeBlocks, 9 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 8 ConstructedInterpolants, 0 QuantifiedInterpolants, 152 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 correct! Received shutdown request...