/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:19:03,541 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:19:03,545 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:19:03,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:19:03,573 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:19:03,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:19:03,576 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:19:03,578 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:19:03,580 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:19:03,581 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:19:03,582 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:19:03,583 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:19:03,584 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:19:03,585 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:19:03,586 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:19:03,587 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:19:03,593 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:19:03,595 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:19:03,596 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:19:03,604 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:19:03,605 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:19:03,607 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:19:03,611 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:19:03,612 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:19:03,614 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:19:03,615 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:19:03,615 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:19:03,616 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:19:03,616 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:19:03,617 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:19:03,618 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:19:03,619 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:19:03,620 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:19:03,621 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:19:03,622 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:19:03,622 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:19:03,623 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:19:03,623 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:19:03,623 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:19:03,624 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:19:03,625 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:19:03,626 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 [2020-09-25 12:19:03,652 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:19:03,652 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:19:03,653 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:19:03,654 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:19:03,654 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:19:03,654 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:19:03,654 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:19:03,655 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:19:03,655 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:19:03,655 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:19:03,655 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:19:03,655 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:19:03,655 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:19:03,656 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:19:03,656 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:19:03,656 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:19:03,656 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:19:03,656 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:19:03,657 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:19:03,657 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:19:03,657 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:19:03,657 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:19:03,657 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:19:03,658 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:19:03,658 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:19:03,658 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:19:03,658 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:19:03,658 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:19:03,659 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:19:03,659 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:19:04,125 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:19:04,141 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:19:04,145 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:19:04,147 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:19:04,149 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:19:04,151 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2020-09-25 12:19:04,247 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/658f08782/a906a910c8794b6c9bdf2fd98ee2d941/FLAG92bbed1b5 [2020-09-25 12:19:04,784 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:19:04,785 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2020-09-25 12:19:04,793 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/658f08782/a906a910c8794b6c9bdf2fd98ee2d941/FLAG92bbed1b5 [2020-09-25 12:19:05,137 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/658f08782/a906a910c8794b6c9bdf2fd98ee2d941 [2020-09-25 12:19:05,151 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:19:05,158 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:19:05,159 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:19:05,159 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:19:05,164 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:19:05,165 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,170 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3e62aa9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05, skipping insertion in model container [2020-09-25 12:19:05,170 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,180 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:19:05,205 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:19:05,449 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:19:05,463 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:19:05,481 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:19:05,498 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:19:05,498 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05 WrapperNode [2020-09-25 12:19:05,499 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:19:05,500 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:19:05,500 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:19:05,500 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:19:05,593 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,593 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,604 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,605 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,616 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,618 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,620 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (1/1) ... [2020-09-25 12:19:05,623 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:19:05,624 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:19:05,624 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:19:05,624 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:19:05,625 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (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 [2020-09-25 12:19:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:19:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:19:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-09-25 12:19:05,697 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:19:05,697 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:19:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-09-25 12:19:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:19:05,698 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:19:05,699 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-09-25 12:19:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-09-25 12:19:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-25 12:19:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:19:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:19:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:19:05,700 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:19:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:19:05,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-25 12:19:05,969 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:19:05,970 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:19:05,975 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:19:05 BoogieIcfgContainer [2020-09-25 12:19:05,975 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:19:05,976 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:19:05,977 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:19:05,980 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:19:05,981 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:19:05" (1/3) ... [2020-09-25 12:19:05,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c613dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:19:05, skipping insertion in model container [2020-09-25 12:19:05,982 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:19:05" (2/3) ... [2020-09-25 12:19:05,982 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@75c613dd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:19:05, skipping insertion in model container [2020-09-25 12:19:05,983 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:19:05" (3/3) ... [2020-09-25 12:19:05,985 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure-1.i [2020-09-25 12:19:05,998 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:19:06,009 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:19:06,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:19:06,135 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:19:06,135 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:19:06,135 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:19:06,135 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:19:06,135 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:19:06,136 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:19:06,136 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:19:06,136 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:19:06,157 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-09-25 12:19:06,164 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-25 12:19:06,164 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:19:06,165 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:19:06,165 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:19:06,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:19:06,172 INFO L82 PathProgramCache]: Analyzing trace with hash -222009229, now seen corresponding path program 1 times [2020-09-25 12:19:06,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:19:06,182 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927848206] [2020-09-25 12:19:06,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:19:06,367 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:06,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:07,398 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:07,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 12:19:07,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:07,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1023 [2020-09-25 12:19:07,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:07,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:19:07,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:19:07,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 12:19:07,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:19:08,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:19:08,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:19:08,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:19:08,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:19:08,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:19:08,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:19:08,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:19:08,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:19:08,218 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:19:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:19:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:19:08,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:19:08,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:19:08,236 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:19:08,239 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927848206] [2020-09-25 12:19:08,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:19:08,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-25 12:19:08,244 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1897566811] [2020-09-25 12:19:08,253 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:19:08,253 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:19:08,272 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:19:08,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:19:08,277 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 14 states. [2020-09-25 12:19:09,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:19:09,127 INFO L93 Difference]: Finished difference Result 57 states and 56 transitions. [2020-09-25 12:19:09,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:19:09,129 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 26 [2020-09-25 12:19:09,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:19:09,139 INFO L225 Difference]: With dead ends: 57 [2020-09-25 12:19:09,139 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:19:09,146 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=126, Invalid=474, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:19:09,168 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:19:09,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:19:09,178 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:19:09,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:19:09,180 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 26 [2020-09-25 12:19:09,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:19:09,181 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:19:09,181 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:19:09,181 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:19:09,181 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:19:09,182 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:19:09,184 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:19:09,222 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 12:19:09,222 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 12:19:09,222 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:19:09,223 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|)) [2020-09-25 12:19:09,223 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:19:09,223 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-09-25 12:19:09,223 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2020-09-25 12:19:09,224 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2020-09-25 12:19:09,224 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2020-09-25 12:19:09,224 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:19:09,224 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:19:09,224 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:19:09,225 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:19:09,225 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 12:19:09,225 INFO L268 CegarLoopResult]: For program point L29(line 29) no Hoare annotation was computed. [2020-09-25 12:19:09,225 INFO L268 CegarLoopResult]: For program point L29-1(line 29) no Hoare annotation was computed. [2020-09-25 12:19:09,225 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 12:19:09,225 INFO L268 CegarLoopResult]: For program point L29-2(line 29) no Hoare annotation was computed. [2020-09-25 12:19:09,226 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 12:19:09,226 INFO L268 CegarLoopResult]: For program point L29-3(line 29) no Hoare annotation was computed. [2020-09-25 12:19:09,226 INFO L268 CegarLoopResult]: For program point L27-2(line 27) no Hoare annotation was computed. [2020-09-25 12:19:09,226 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2020-09-25 12:19:09,226 INFO L268 CegarLoopResult]: For program point L27-3(line 27) no Hoare annotation was computed. [2020-09-25 12:19:09,226 INFO L268 CegarLoopResult]: For program point L27-4(line 27) no Hoare annotation was computed. [2020-09-25 12:19:09,227 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2020-09-25 12:19:09,227 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 12:19:09,227 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 24 32) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 12:19:09,227 INFO L268 CegarLoopResult]: For program point L30-1(line 30) no Hoare annotation was computed. [2020-09-25 12:19:09,227 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 12:19:09,227 INFO L268 CegarLoopResult]: For program point L30-2(line 30) no Hoare annotation was computed. [2020-09-25 12:19:09,228 INFO L268 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-09-25 12:19:09,228 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-09-25 12:19:09,228 INFO L268 CegarLoopResult]: For program point L26(line 26) no Hoare annotation was computed. [2020-09-25 12:19:09,228 INFO L268 CegarLoopResult]: For program point L28-2(line 28) no Hoare annotation was computed. [2020-09-25 12:19:09,228 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 12:19:09,229 INFO L264 CegarLoopResult]: At program point L30-5(line 30) the Hoare annotation is: false [2020-09-25 12:19:09,229 INFO L268 CegarLoopResult]: For program point L28-3(line 28) no Hoare annotation was computed. [2020-09-25 12:19:09,229 INFO L268 CegarLoopResult]: For program point L30-6(line 30) no Hoare annotation was computed. [2020-09-25 12:19:09,229 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 12:19:09,229 INFO L268 CegarLoopResult]: For program point L28-4(line 28) no Hoare annotation was computed. [2020-09-25 12:19:09,230 INFO L268 CegarLoopResult]: For program point L30-7(line 30) no Hoare annotation was computed. [2020-09-25 12:19:09,230 INFO L268 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-09-25 12:19:09,230 INFO L268 CegarLoopResult]: For program point L30-8(line 30) no Hoare annotation was computed. [2020-09-25 12:19:09,238 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:19:09 BoogieIcfgContainer [2020-09-25 12:19:09,238 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:19:09,242 INFO L168 Benchmark]: Toolchain (without parser) took 4086.89 ms. Allocated memory was 138.9 MB in the beginning and 246.4 MB in the end (delta: 107.5 MB). Free memory was 102.6 MB in the beginning and 200.9 MB in the end (delta: -98.3 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:09,243 INFO L168 Benchmark]: CDTParser took 1.74 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:19:09,244 INFO L168 Benchmark]: CACSL2BoogieTranslator took 339.97 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 91.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:09,245 INFO L168 Benchmark]: Boogie Preprocessor took 123.62 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:09,246 INFO L168 Benchmark]: RCFGBuilder took 351.82 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 161.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:09,247 INFO L168 Benchmark]: TraceAbstraction took 3261.53 ms. Allocated memory was 201.3 MB in the beginning and 246.4 MB in the end (delta: 45.1 MB). Free memory was 161.1 MB in the beginning and 200.9 MB in the end (delta: -39.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. [2020-09-25 12:19:09,255 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 1.74 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.3 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 339.97 ms. Allocated memory is still 138.9 MB. Free memory was 101.9 MB in the beginning and 91.9 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.62 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 91.9 MB in the beginning and 179.3 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 351.82 ms. Allocated memory is still 201.3 MB. Free memory was 179.3 MB in the beginning and 161.8 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3261.53 ms. Allocated memory was 201.3 MB in the beginning and 246.4 MB in the end (delta: 45.1 MB). Free memory was 161.1 MB in the beginning and 200.9 MB in the end (delta: -39.8 MB). Peak memory consumption was 5.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 9]: 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, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.0s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 20 SDtfs, 77 SDslu, 139 SDs, 0 SdLazy, 165 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 67 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred 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, 1.8s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 25 ConstructedInterpolants, 0 QuantifiedInterpolants, 12050 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...