/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 SequenceOfStatements --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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.4 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=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-adbd35c [2020-10-14 04:57:59,439 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 04:57:59,442 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 04:57:59,483 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 04:57:59,483 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 04:57:59,494 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 04:57:59,496 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 04:57:59,499 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 04:57:59,501 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 04:57:59,505 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 04:57:59,505 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 04:57:59,506 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 04:57:59,507 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 04:57:59,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 04:57:59,512 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 04:57:59,513 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 04:57:59,514 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 04:57:59,515 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 04:57:59,516 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 04:57:59,522 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 04:57:59,523 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 04:57:59,527 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 04:57:59,528 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 04:57:59,529 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 04:57:59,534 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 04:57:59,534 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 04:57:59,534 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 04:57:59,537 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 04:57:59,537 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 04:57:59,538 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 04:57:59,538 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 04:57:59,539 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 04:57:59,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 04:57:59,540 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 04:57:59,542 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 04:57:59,542 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 04:57:59,543 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 04:57:59,543 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 04:57:59,543 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 04:57:59,544 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 04:57:59,544 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 04:57:59,547 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 [2020-10-14 04:57:59,589 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 04:57:59,589 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 04:57:59,592 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 04:57:59,592 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 04:57:59,592 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 04:57:59,592 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 04:57:59,593 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 04:57:59,593 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 04:57:59,593 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 04:57:59,593 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 04:57:59,595 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 04:57:59,595 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 04:57:59,595 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 04:57:59,596 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 04:57:59,596 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 04:57:59,596 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 04:57:59,596 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 04:57:59,596 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 04:57:59,597 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 04:57:59,597 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 04:57:59,597 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 04:57:59,597 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 04:57:59,597 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 04:57:59,598 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 04:57:59,598 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 04:57:59,598 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 04:57:59,598 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 04:57:59,598 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 04:57:59,599 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 04:57:59,599 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 -> SequenceOfStatements 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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=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=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true;unknown-allowed=true; [2020-10-14 04:57:59,920 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 04:57:59,939 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 04:57:59,943 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 04:57:59,945 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 04:57:59,946 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 04:57:59,946 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2020-10-14 04:58:00,017 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0ddd40b2/3042a3644f87414fa594b9ac2e78b8c9/FLAG15fcb6f1e [2020-10-14 04:58:00,460 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 04:58:00,461 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/ldv-regression/nested_structure-1.i [2020-10-14 04:58:00,467 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0ddd40b2/3042a3644f87414fa594b9ac2e78b8c9/FLAG15fcb6f1e [2020-10-14 04:58:00,844 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b0ddd40b2/3042a3644f87414fa594b9ac2e78b8c9 [2020-10-14 04:58:00,854 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 04:58:00,856 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 04:58:00,857 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 04:58:00,857 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 04:58:00,861 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 04:58:00,862 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:58:00" (1/1) ... [2020-10-14 04:58:00,865 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2d1c6851 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:00, skipping insertion in model container [2020-10-14 04:58:00,865 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 04:58:00" (1/1) ... [2020-10-14 04:58:00,873 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 04:58:00,892 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 04:58:01,061 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:58:01,073 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 04:58:01,091 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 04:58:01,109 INFO L208 MainTranslator]: Completed translation [2020-10-14 04:58:01,110 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01 WrapperNode [2020-10-14 04:58:01,110 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 04:58:01,111 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 04:58:01,111 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 04:58:01,111 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 04:58:01,125 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (1/1) ... [2020-10-14 04:58:01,125 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (1/1) ... [2020-10-14 04:58:01,220 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (1/1) ... [2020-10-14 04:58:01,221 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (1/1) ... [2020-10-14 04:58:01,238 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (1/1) ... [2020-10-14 04:58:01,239 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (1/1) ... [2020-10-14 04:58:01,240 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (1/1) ... [2020-10-14 04:58:01,242 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 04:58:01,243 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 04:58:01,243 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 04:58:01,243 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 04:58:01,244 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (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 [2020-10-14 04:58:01,304 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 04:58:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 04:58:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure __blast_assert [2020-10-14 04:58:01,305 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 04:58:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 04:58:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure __blast_assert [2020-10-14 04:58:01,305 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 04:58:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 04:58:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-14 04:58:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-14 04:58:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-14 04:58:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 04:58:01,306 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 04:58:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 04:58:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 04:58:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 04:58:01,307 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-14 04:58:01,533 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 04:58:01,533 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-14 04:58:01,536 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:58:01 BoogieIcfgContainer [2020-10-14 04:58:01,537 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 04:58:01,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 04:58:01,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 04:58:01,541 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 04:58:01,542 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 04:58:00" (1/3) ... [2020-10-14 04:58:01,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edcd42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:58:01, skipping insertion in model container [2020-10-14 04:58:01,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 04:58:01" (2/3) ... [2020-10-14 04:58:01,543 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1edcd42d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 04:58:01, skipping insertion in model container [2020-10-14 04:58:01,543 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 04:58:01" (3/3) ... [2020-10-14 04:58:01,545 INFO L109 eAbstractionObserver]: Analyzing ICFG nested_structure-1.i [2020-10-14 04:58:01,557 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 04:58:01,564 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 04:58:01,579 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 04:58:01,648 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 04:58:01,648 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 04:58:01,648 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 04:58:01,648 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 04:58:01,649 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 04:58:01,649 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 04:58:01,649 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 04:58:01,649 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 04:58:01,694 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states. [2020-10-14 04:58:01,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-14 04:58:01,701 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 04:58:01,702 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 04:58:01,702 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 04:58:01,707 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 04:58:01,707 INFO L82 PathProgramCache]: Analyzing trace with hash -642389624, now seen corresponding path program 1 times [2020-10-14 04:58:01,715 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 04:58:01,715 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1589884548] [2020-10-14 04:58:01,715 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 04:58:01,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:01,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:02,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-14 04:58:02,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:02,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-14 04:58:02,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:02,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-14 04:58:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-14 04:58:02,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-14 04:58:02,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-10-14 04:58:02,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 04:58:02,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 04:58:02,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 04:58:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 04:58:02,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 04:58:02,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 04:58:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-14 04:58:02,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-10-14 04:58:02,342 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-10-14 04:58:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 04:58:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 04:58:02,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 04:58:02,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 04:58:02,350 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-14 04:58:02,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1589884548] [2020-10-14 04:58:02,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 04:58:02,354 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-14 04:58:02,355 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [889156870] [2020-10-14 04:58:02,365 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-14 04:58:02,365 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 04:58:02,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-14 04:58:02,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-14 04:58:02,383 INFO L87 Difference]: Start difference. First operand 17 states. Second operand 4 states. [2020-10-14 04:58:02,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 04:58:02,446 INFO L93 Difference]: Finished difference Result 22 states and 21 transitions. [2020-10-14 04:58:02,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-14 04:58:02,448 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-14 04:58:02,448 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 04:58:02,456 INFO L225 Difference]: With dead ends: 22 [2020-10-14 04:58:02,456 INFO L226 Difference]: Without dead ends: 0 [2020-10-14 04:58:02,460 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 [2020-10-14 04:58:02,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-14 04:58:02,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-14 04:58:02,486 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-14 04:58:02,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-14 04:58:02,488 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 9 [2020-10-14 04:58:02,489 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 04:58:02,489 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-14 04:58:02,489 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-14 04:58:02,489 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-14 04:58:02,489 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-14 04:58:02,490 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 04:58:02,492 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-14 04:58:02,538 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-14 04:58:02,539 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|)) [2020-10-14 04:58:02,539 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-14 04:58:02,539 INFO L268 CegarLoopResult]: For program point __blast_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 9) no Hoare annotation was computed. [2020-10-14 04:58:02,539 INFO L268 CegarLoopResult]: For program point __blast_assertEXIT(lines 7 10) no Hoare annotation was computed. [2020-10-14 04:58:02,539 INFO L268 CegarLoopResult]: For program point __blast_assertFINAL(lines 7 10) no Hoare annotation was computed. [2020-10-14 04:58:02,540 INFO L271 CegarLoopResult]: At program point __blast_assertENTRY(lines 7 10) the Hoare annotation is: true [2020-10-14 04:58:02,540 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-14 04:58:02,540 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-14 04:58:02,540 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-14 04:58:02,540 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-14 04:58:02,541 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-10-14 04:58:02,541 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 24 32) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-10-14 04:58:02,541 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2020-10-14 04:58:02,541 INFO L264 CegarLoopResult]: At program point L30-2(line 30) the Hoare annotation is: false [2020-10-14 04:58:02,541 INFO L268 CegarLoopResult]: For program point L30-3(line 30) no Hoare annotation was computed. [2020-10-14 04:58:02,542 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2020-10-14 04:58:02,548 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 04:58:02 BoogieIcfgContainer [2020-10-14 04:58:02,548 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 04:58:02,551 INFO L168 Benchmark]: Toolchain (without parser) took 1694.21 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 104.8 MB in the beginning and 122.5 MB in the end (delta: -17.6 MB). Peak memory consumption was 39.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:58:02,553 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-14 04:58:02,554 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.11 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 94.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-14 04:58:02,555 INFO L168 Benchmark]: Boogie Preprocessor took 132.14 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 94.5 MB in the beginning and 183.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-14 04:58:02,556 INFO L168 Benchmark]: RCFGBuilder took 293.78 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 168.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:58:02,557 INFO L168 Benchmark]: TraceAbstraction took 1010.26 ms. Allocated memory is still 205.5 MB. Free memory was 168.2 MB in the beginning and 122.5 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 MB. Max. memory is 7.1 GB. [2020-10-14 04:58:02,561 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 148.4 MB. Free memory was 122.9 MB in the beginning and 122.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.11 ms. Allocated memory is still 148.4 MB. Free memory was 104.8 MB in the beginning and 94.5 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.14 ms. Allocated memory was 148.4 MB in the beginning and 205.5 MB in the end (delta: 57.1 MB). Free memory was 94.5 MB in the beginning and 183.9 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 293.78 ms. Allocated memory is still 205.5 MB. Free memory was 183.0 MB in the beginning and 168.2 MB in the end (delta: 14.8 MB). Peak memory consumption was 14.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1010.26 ms. Allocated memory is still 205.5 MB. Free memory was 168.2 MB in the beginning and 122.5 MB in the end (delta: 45.8 MB). Peak memory consumption was 45.8 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, 17 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, 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, 0.4s 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...