/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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/loop-crafted/simple_array_index_value_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-14 23:48:21,266 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-14 23:48:21,269 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-14 23:48:21,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-14 23:48:21,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-14 23:48:21,316 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-14 23:48:21,318 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-14 23:48:21,321 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-14 23:48:21,323 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-14 23:48:21,326 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-14 23:48:21,326 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-14 23:48:21,327 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-14 23:48:21,328 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-14 23:48:21,330 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-14 23:48:21,332 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-14 23:48:21,334 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-14 23:48:21,335 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-14 23:48:21,336 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-14 23:48:21,337 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-14 23:48:21,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-14 23:48:21,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-14 23:48:21,347 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-14 23:48:21,348 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-14 23:48:21,349 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-14 23:48:21,361 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-14 23:48:21,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-14 23:48:21,365 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-14 23:48:21,366 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-14 23:48:21,366 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-14 23:48:21,367 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-14 23:48:21,367 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-14 23:48:21,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-14 23:48:21,374 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-14 23:48:21,375 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-14 23:48:21,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-14 23:48:21,376 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-14 23:48:21,377 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-14 23:48:21,377 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-14 23:48:21,377 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-14 23:48:21,378 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-14 23:48:21,379 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-14 23:48:21,380 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 23:48:21,414 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-14 23:48:21,414 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-14 23:48:21,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-14 23:48:21,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-14 23:48:21,416 INFO L138 SettingsManager]: * Use SBE=true [2020-10-14 23:48:21,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-14 23:48:21,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-14 23:48:21,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-14 23:48:21,416 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-14 23:48:21,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-14 23:48:21,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-14 23:48:21,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-14 23:48:21,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-14 23:48:21,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-14 23:48:21,417 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-14 23:48:21,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-14 23:48:21,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-14 23:48:21,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-14 23:48:21,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-14 23:48:21,418 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-14 23:48:21,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-14 23:48:21,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-14 23:48:21,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-14 23:48:21,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-14 23:48:21,419 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-14 23:48:21,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-14 23:48:21,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-14 23:48:21,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-14 23:48:21,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-14 23:48:21,420 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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;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=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-14 23:48:21,705 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-14 23:48:21,722 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-14 23:48:21,727 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-14 23:48:21,729 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-14 23:48:21,729 INFO L275 PluginConnector]: CDTParser initialized [2020-10-14 23:48:21,730 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-10-14 23:48:21,792 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a58bcf8/7bbd2a600d124a34bddc83ec5ace334d/FLAG4946d84a5 [2020-10-14 23:48:22,191 INFO L306 CDTParser]: Found 1 translation units. [2020-10-14 23:48:22,192 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_array_index_value_1-2.i [2020-10-14 23:48:22,198 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a58bcf8/7bbd2a600d124a34bddc83ec5ace334d/FLAG4946d84a5 [2020-10-14 23:48:22,568 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/07a58bcf8/7bbd2a600d124a34bddc83ec5ace334d [2020-10-14 23:48:22,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-14 23:48:22,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-14 23:48:22,587 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-14 23:48:22,587 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-14 23:48:22,590 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-14 23:48:22,591 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:22,595 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59b15dda and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22, skipping insertion in model container [2020-10-14 23:48:22,595 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:22,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-14 23:48:22,626 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-14 23:48:22,862 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:48:22,867 INFO L203 MainTranslator]: Completed pre-run [2020-10-14 23:48:22,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-14 23:48:22,909 INFO L208 MainTranslator]: Completed translation [2020-10-14 23:48:22,910 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22 WrapperNode [2020-10-14 23:48:22,910 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-14 23:48:22,911 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-14 23:48:22,911 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-14 23:48:22,911 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-14 23:48:23,006 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:23,006 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:23,012 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:23,013 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:23,019 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:23,023 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:23,024 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (1/1) ... [2020-10-14 23:48:23,027 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-14 23:48:23,028 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-14 23:48:23,028 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-14 23:48:23,033 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-14 23:48:23,034 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (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 23:48:23,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-14 23:48:23,100 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-14 23:48:23,100 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-14 23:48:23,101 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-14 23:48:23,101 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-14 23:48:23,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-14 23:48:23,101 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-14 23:48:23,101 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-14 23:48:23,101 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-14 23:48:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-14 23:48:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-14 23:48:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-14 23:48:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-14 23:48:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-14 23:48:23,102 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-14 23:48:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-14 23:48:23,103 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-14 23:48:23,306 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-14 23:48:23,307 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-14 23:48:23,311 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:48:23 BoogieIcfgContainer [2020-10-14 23:48:23,311 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-14 23:48:23,313 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-14 23:48:23,313 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-14 23:48:23,316 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-14 23:48:23,316 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 14.10 11:48:22" (1/3) ... [2020-10-14 23:48:23,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52479ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:48:23, skipping insertion in model container [2020-10-14 23:48:23,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 14.10 11:48:22" (2/3) ... [2020-10-14 23:48:23,317 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52479ac0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 14.10 11:48:23, skipping insertion in model container [2020-10-14 23:48:23,317 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 14.10 11:48:23" (3/3) ... [2020-10-14 23:48:23,319 INFO L109 eAbstractionObserver]: Analyzing ICFG simple_array_index_value_1-2.i [2020-10-14 23:48:23,330 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-14 23:48:23,337 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-14 23:48:23,352 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-14 23:48:23,378 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-14 23:48:23,378 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-14 23:48:23,378 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-14 23:48:23,378 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-14 23:48:23,378 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-14 23:48:23,379 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-14 23:48:23,379 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-14 23:48:23,379 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-14 23:48:23,401 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-14 23:48:23,406 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-14 23:48:23,406 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:23,407 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:23,408 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:23,415 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:23,415 INFO L82 PathProgramCache]: Analyzing trace with hash 1649343282, now seen corresponding path program 1 times [2020-10-14 23:48:23,424 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:23,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427874983] [2020-10-14 23:48:23,425 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:23,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:23,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:23,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:23,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-14 23:48:23,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:23,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-14 23:48:23,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:23,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:23,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-14 23:48:23,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:23,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-14 23:48:23,682 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-14 23:48:23,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-14 23:48:23,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-14 23:48:23,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-14 23:48:23,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-14 23:48:23,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-14 23:48:23,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-14 23:48:23,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-14 23:48:23,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-14 23:48:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-14 23:48:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-14 23:48:23,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-14 23:48:23,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-14 23:48:23,707 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 23:48:23,708 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427874983] [2020-10-14 23:48:23,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-14 23:48:23,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-14 23:48:23,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [428167398] [2020-10-14 23:48:23,716 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-14 23:48:23,717 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-14 23:48:23,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-14 23:48:23,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:48:23,734 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-10-14 23:48:23,801 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-14 23:48:23,802 INFO L93 Difference]: Finished difference Result 36 states and 42 transitions. [2020-10-14 23:48:23,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-14 23:48:23,804 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-14 23:48:23,804 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-14 23:48:23,812 INFO L225 Difference]: With dead ends: 36 [2020-10-14 23:48:23,812 INFO L226 Difference]: Without dead ends: 15 [2020-10-14 23:48:23,816 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-14 23:48:23,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-14 23:48:23,846 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-14 23:48:23,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-14 23:48:23,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2020-10-14 23:48:23,850 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 13 [2020-10-14 23:48:23,851 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-14 23:48:23,851 INFO L479 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2020-10-14 23:48:23,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-14 23:48:23,851 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2020-10-14 23:48:23,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-14 23:48:23,852 INFO L414 BasicCegarLoop]: Found error trace [2020-10-14 23:48:23,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-14 23:48:23,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-14 23:48:23,853 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-14 23:48:23,854 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-14 23:48:23,854 INFO L82 PathProgramCache]: Analyzing trace with hash 1939839121, now seen corresponding path program 1 times [2020-10-14 23:48:23,854 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-14 23:48:23,855 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614335038] [2020-10-14 23:48:23,855 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-14 23:48:23,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-14 23:48:23,896 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-14 23:48:23,897 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-14 23:48:23,902 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-14 23:48:23,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 14.10 11:48:23 BoogieIcfgContainer [2020-10-14 23:48:23,918 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-14 23:48:23,920 INFO L168 Benchmark]: Toolchain (without parser) took 1336.82 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 102.1 MB in the beginning and 133.2 MB in the end (delta: -31.0 MB). Peak memory consumption was 25.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:48:23,921 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-10-14 23:48:23,922 INFO L168 Benchmark]: CACSL2BoogieTranslator took 323.75 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-14 23:48:23,924 INFO L168 Benchmark]: Boogie Preprocessor took 116.80 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.2 MB in the beginning and 180.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. [2020-10-14 23:48:23,925 INFO L168 Benchmark]: RCFGBuilder took 283.68 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 167.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-14 23:48:23,926 INFO L168 Benchmark]: TraceAbstraction took 605.34 ms. Allocated memory is still 203.4 MB. Free memory was 166.5 MB in the beginning and 133.2 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. [2020-10-14 23:48:23,929 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 147.3 MB. Free memory was 120.6 MB in the beginning and 120.2 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 323.75 ms. Allocated memory is still 147.3 MB. Free memory was 102.1 MB in the beginning and 92.2 MB in the end (delta: 10.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 116.80 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.2 MB in the beginning and 180.9 MB in the end (delta: -88.7 MB). Peak memory consumption was 10.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 283.68 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 167.4 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 605.34 ms. Allocated memory is still 203.4 MB. Free memory was 166.5 MB in the beginning and 133.2 MB in the end (delta: 33.3 MB). Peak memory consumption was 33.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 15]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] unsigned int array[10000]; [L25] unsigned int index = 0; [L26] unsigned int tmp = 0; [L28] COND TRUE 1 [L29] index = __VERIFIER_nondet_uint() [L30] COND TRUE index >= 10000 [L37] EXPR tmp < 10000 && array[tmp] == tmp [L37] EXPR array[tmp] [L37] EXPR tmp < 10000 && array[tmp] == tmp [L37] CALL __VERIFIER_assert(tmp < 10000 && array[tmp] == tmp) [L14] COND TRUE !(cond) [L15] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.5s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 21 SDtfs, 5 SDslu, 4 SDs, 0 SdLazy, 13 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=22occurred 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: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.1s InterpolantComputationTime, 27 NumberOfCodeBlocks, 27 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 12 ConstructedInterpolants, 0 QuantifiedInterpolants, 252 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 incorrect! Received shutdown request...