/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=0.3 --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 language data_model -i ../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:38:52,641 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:38:52,646 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:38:52,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:38:52,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:38:52,716 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:38:52,718 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:38:52,724 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:38:52,727 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:38:52,735 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:38:52,736 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:38:52,738 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:38:52,738 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:38:52,741 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:38:52,743 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:38:52,745 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:38:52,746 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:38:52,749 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:38:52,756 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:38:52,764 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:38:52,766 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:38:52,768 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:38:52,769 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:38:52,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:38:52,777 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:38:52,778 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:38:52,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:38:52,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:38:52,793 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:38:52,794 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:38:52,794 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:38:52,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:38:52,796 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:38:52,796 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:38:52,797 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:38:52,798 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:38:52,798 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:38:52,799 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:38:52,799 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:38:52,800 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:38:52,801 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:38:52,802 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 [2020-10-29 09:38:52,828 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:38:52,828 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:38:52,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:38:52,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:38:52,830 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:38:52,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:38:52,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:38:52,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:38:52,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:38:52,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:38:52,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:38:52,832 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:38:52,832 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:38:52,832 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:38:52,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:38:52,832 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:38:52,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:38:52,833 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:38:52,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:38:52,833 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:38:52,833 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:38:52,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:38:52,834 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:38:52,834 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:38:52,834 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:38:52,834 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:38:52,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:38:52,835 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:38:52,835 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:38:52,835 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:38:53,200 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:38:53,252 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:38:53,257 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:38:53,259 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:38:53,260 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:38:53,262 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-10-29 09:38:53,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93de9be58/40601b861bdd472281c239aa5b24c437/FLAG3a789edec [2020-10-29 09:38:54,096 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:38:54,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-crafted/simple_vardep_1.c [2020-10-29 09:38:54,104 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93de9be58/40601b861bdd472281c239aa5b24c437/FLAG3a789edec [2020-10-29 09:38:54,455 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/93de9be58/40601b861bdd472281c239aa5b24c437 [2020-10-29 09:38:54,458 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:38:54,465 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:38:54,469 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:38:54,469 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:38:54,474 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:38:54,475 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,480 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@57081640 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54, skipping insertion in model container [2020-10-29 09:38:54,480 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,489 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:38:54,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:38:54,704 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:38:54,715 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:38:54,732 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:38:54,748 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:38:54,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54 WrapperNode [2020-10-29 09:38:54,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:38:54,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:38:54,751 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:38:54,751 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:38:54,763 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,763 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,773 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,778 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,783 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,784 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (1/1) ... [2020-10-29 09:38:54,786 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:38:54,788 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:38:54,788 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:38:54,788 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:38:54,789 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (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 [2020-10-29 09:38:54,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:38:54,865 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:38:54,865 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:38:54,865 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:38:54,866 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:38:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:38:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:38:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:38:54,866 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:38:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:38:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:38:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:38:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:38:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:38:54,867 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:38:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:38:54,868 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:38:55,275 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:38:55,275 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:38:55,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:38:55 BoogieIcfgContainer [2020-10-29 09:38:55,279 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:38:55,283 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:38:55,284 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:38:55,288 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:38:55,289 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:38:54" (1/3) ... [2020-10-29 09:38:55,290 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9f1590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:38:55, skipping insertion in model container [2020-10-29 09:38:55,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:38:54" (2/3) ... [2020-10-29 09:38:55,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c9f1590 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:38:55, skipping insertion in model container [2020-10-29 09:38:55,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:38:55" (3/3) ... [2020-10-29 09:38:55,295 INFO L111 eAbstractionObserver]: Analyzing ICFG simple_vardep_1.c [2020-10-29 09:38:55,310 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:38:55,315 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:38:55,329 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:38:55,393 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:38:55,393 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:38:55,394 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:38:55,395 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:38:55,395 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:38:55,395 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:38:55,395 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:38:55,395 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:38:55,426 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-10-29 09:38:55,433 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-29 09:38:55,433 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:38:55,434 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:38:55,435 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:38:55,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:38:55,446 INFO L82 PathProgramCache]: Analyzing trace with hash 726330133, now seen corresponding path program 1 times [2020-10-29 09:38:55,457 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:38:55,459 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [605885409] [2020-10-29 09:38:55,459 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:38:55,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:55,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:56,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:56,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-29 09:38:56,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:56,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-29 09:38:56,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:56,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:38:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:38:56,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:38:56,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:38:56,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:38:56,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:38:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:38:56,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:38:56,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:38:56,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:38:56,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:38:56,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:38:56,495 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:38:56,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:38:56,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:38:56,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:38:56,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:38:56,516 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:38:56,517 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [605885409] [2020-10-29 09:38:56,519 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:38:56,519 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:38:56,520 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [906365038] [2020-10-29 09:38:56,525 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:38:56,525 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:38:56,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:38:56,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:38:56,543 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 7 states. [2020-10-29 09:38:56,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:38:56,773 INFO L93 Difference]: Finished difference Result 32 states and 37 transitions. [2020-10-29 09:38:56,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-29 09:38:56,775 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-29 09:38:56,776 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:38:56,782 INFO L225 Difference]: With dead ends: 32 [2020-10-29 09:38:56,782 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:38:56,786 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-10-29 09:38:56,804 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:38:56,810 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:38:56,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:38:56,812 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:38:56,814 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-29 09:38:56,814 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:38:56,814 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:38:56,814 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:38:56,815 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:38:56,815 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:38:56,815 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:38:56,817 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:38:57,095 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 6) no Hoare annotation was computed. [2020-10-29 09:38:57,095 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 6) the Hoare annotation is: true [2020-10-29 09:38:57,095 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 6) no Hoare annotation was computed. [2020-10-29 09:38:57,095 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-10-29 09:38:57,096 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:38:57,096 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-29 09:38:57,096 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:38:57,096 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:38:57,096 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:38:57,097 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:38:57,097 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:38:57,098 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 15 29) the Hoare annotation is: true [2020-10-29 09:38:57,099 INFO L270 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= .cse0 main_~k~0) (<= main_~k~0 .cse0))) [2020-10-29 09:38:57,100 INFO L270 CegarLoopResult]: At program point L26-1(lines 21 27) the Hoare annotation is: (let ((.cse0 (+ main_~i~0 main_~j~0))) (and (<= .cse0 main_~k~0) (<= main_~k~0 .cse0))) [2020-10-29 09:38:57,101 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 15 29) no Hoare annotation was computed. [2020-10-29 09:38:57,101 INFO L274 CegarLoopResult]: For program point L21-2(lines 15 29) no Hoare annotation was computed. [2020-10-29 09:38:57,101 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 7 13) the Hoare annotation is: true [2020-10-29 09:38:57,101 INFO L270 CegarLoopResult]: At program point L10(line 10) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-29 09:38:57,101 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 7 13) no Hoare annotation was computed. [2020-10-29 09:38:57,102 INFO L274 CegarLoopResult]: For program point L9(lines 9 11) no Hoare annotation was computed. [2020-10-29 09:38:57,102 INFO L274 CegarLoopResult]: For program point L10-1(line 10) no Hoare annotation was computed. [2020-10-29 09:38:57,103 INFO L274 CegarLoopResult]: For program point L9-2(lines 7 13) no Hoare annotation was computed. [2020-10-29 09:38:57,125 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:38:57 BoogieIcfgContainer [2020-10-29 09:38:57,125 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:38:57,131 INFO L168 Benchmark]: Toolchain (without parser) took 2667.11 ms. Allocated memory is still 155.2 MB. Free memory was 130.9 MB in the beginning and 98.9 MB in the end (delta: 32.0 MB). Peak memory consumption was 33.2 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:57,134 INFO L168 Benchmark]: CDTParser took 0.59 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 99.3 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:38:57,140 INFO L168 Benchmark]: CACSL2BoogieTranslator took 280.98 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 121.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:57,142 INFO L168 Benchmark]: Boogie Preprocessor took 36.23 ms. Allocated memory is still 155.2 MB. Free memory was 121.3 MB in the beginning and 119.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:57,143 INFO L168 Benchmark]: RCFGBuilder took 491.46 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 107.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:57,145 INFO L168 Benchmark]: TraceAbstraction took 1842.36 ms. Allocated memory is still 155.2 MB. Free memory was 106.9 MB in the beginning and 98.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. [2020-10-29 09:38:57,156 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.59 ms. Allocated memory is still 125.8 MB. Free memory was 99.3 MB in the beginning and 99.3 MB in the end (delta: 72.6 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 280.98 ms. Allocated memory is still 155.2 MB. Free memory was 130.4 MB in the beginning and 121.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 36.23 ms. Allocated memory is still 155.2 MB. Free memory was 121.3 MB in the beginning and 119.9 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 491.46 ms. Allocated memory is still 155.2 MB. Free memory was 119.9 MB in the beginning and 107.3 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1842.36 ms. Allocated memory is still 155.2 MB. Free memory was 106.9 MB in the beginning and 98.9 MB in the end (delta: 8.0 MB). Peak memory consumption was 9.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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 - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: i + j <= k && k <= i + j - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 22 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.4s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 10 SDtfs, 13 SDslu, 30 SDs, 0 SdLazy, 28 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s 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: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 11 PreInvPairs, 13 NumberOfFragments, 62 HoareAnnotationTreeSize, 11 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 128 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 12 NumberOfCodeBlocks, 12 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 11 ConstructedInterpolants, 0 QuantifiedInterpolants, 1067 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...