/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-new/count_by_1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:11:21,792 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:11:21,796 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:11:21,843 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:11:21,844 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:11:21,849 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:11:21,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:11:21,863 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:11:21,866 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:11:21,867 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:11:21,869 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:11:21,872 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:11:21,872 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:11:21,876 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:11:21,880 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:11:21,883 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:11:21,885 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:11:21,886 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:11:21,887 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:11:21,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:11:21,898 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:11:21,899 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:11:21,900 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:11:21,901 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:11:21,906 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:11:21,906 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:11:21,907 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:11:21,910 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:11:21,911 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:11:21,912 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:11:21,912 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:11:21,913 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:11:21,914 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:11:21,915 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:11:21,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:11:21,916 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:11:21,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:11:21,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:11:21,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:11:21,919 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:11:21,920 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:11:21,921 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:11:21,972 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:11:21,972 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:11:21,974 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:11:21,975 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:11:21,975 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:11:21,975 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:11:21,976 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:11:21,976 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:11:21,976 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:11:21,976 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:11:21,977 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:11:21,978 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:11:21,978 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:11:21,978 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:11:21,978 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:11:21,979 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:11:21,979 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:11:21,979 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:11:21,979 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:11:21,980 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:11:21,980 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:11:21,980 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:11:21,980 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:11:21,980 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:11:21,981 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:11:21,981 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:11:21,981 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:11:21,981 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:11:21,982 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:11:21,982 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:11:22,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:11:22,421 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:11:22,426 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:11:22,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:11:22,430 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:11:22,431 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-new/count_by_1.i [2020-09-25 01:11:22,531 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24fd97577/d993a8915a1d4de6a05c3e3e91e44063/FLAG4132e9fcd [2020-09-25 01:11:23,080 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:11:23,081 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-new/count_by_1.i [2020-09-25 01:11:23,090 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24fd97577/d993a8915a1d4de6a05c3e3e91e44063/FLAG4132e9fcd [2020-09-25 01:11:23,416 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/24fd97577/d993a8915a1d4de6a05c3e3e91e44063 [2020-09-25 01:11:23,430 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:11:23,436 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:11:23,437 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:23,438 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:11:23,442 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:11:23,443 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,448 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45c3b431 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23, skipping insertion in model container [2020-09-25 01:11:23,448 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,457 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:11:23,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:11:23,689 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:23,694 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:11:23,713 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:11:23,731 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:11:23,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23 WrapperNode [2020-09-25 01:11:23,733 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:11:23,733 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:11:23,734 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:11:23,734 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:11:23,747 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,755 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,759 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,772 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,773 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... [2020-09-25 01:11:23,775 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:11:23,776 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:11:23,776 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:11:23,776 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:11:23,778 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:11:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:11:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:11:23,942 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 01:11:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:11:23,943 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:11:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:11:23,943 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 01:11:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 01:11:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:11:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:11:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:11:23,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:11:23,945 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:11:24,136 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:11:24,137 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 01:11:24,142 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:24 BoogieIcfgContainer [2020-09-25 01:11:24,143 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:11:24,144 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:11:24,145 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:11:24,149 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:11:24,162 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:11:23" (1/3) ... [2020-09-25 01:11:24,165 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26c8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:24, skipping insertion in model container [2020-09-25 01:11:24,165 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:11:23" (2/3) ... [2020-09-25 01:11:24,166 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b26c8dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:11:24, skipping insertion in model container [2020-09-25 01:11:24,166 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:11:24" (3/3) ... [2020-09-25 01:11:24,173 INFO L109 eAbstractionObserver]: Analyzing ICFG count_by_1.i [2020-09-25 01:11:24,207 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:11:24,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:11:24,263 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:11:24,294 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:11:24,294 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:11:24,294 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:11:24,295 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:11:24,295 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:11:24,295 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:11:24,295 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:11:24,296 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:11:24,319 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states. [2020-09-25 01:11:24,327 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-09-25 01:11:24,328 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:24,329 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:24,330 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:24,338 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:24,338 INFO L82 PathProgramCache]: Analyzing trace with hash 574813456, now seen corresponding path program 1 times [2020-09-25 01:11:24,351 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:24,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2100005544] [2020-09-25 01:11:24,352 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:24,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:24,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:24,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:24,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-09-25 01:11:24,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:24,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-09-25 01:11:24,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:24,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 01:11:24,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 01:11:24,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 01:11:24,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 01:11:24,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:24,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:24,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:24,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:24,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:24,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:24,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 01:11:24,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:24,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:24,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:24,595 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:24,596 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2100005544] [2020-09-25 01:11:24,599 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:24,599 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:11:24,600 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1793263346] [2020-09-25 01:11:24,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:11:24,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:24,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:11:24,625 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:11:24,627 INFO L87 Difference]: Start difference. First operand 22 states. Second operand 3 states. [2020-09-25 01:11:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:24,692 INFO L93 Difference]: Finished difference Result 37 states and 42 transitions. [2020-09-25 01:11:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:11:24,694 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 11 [2020-09-25 01:11:24,694 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:24,703 INFO L225 Difference]: With dead ends: 37 [2020-09-25 01:11:24,703 INFO L226 Difference]: Without dead ends: 18 [2020-09-25 01:11:24,708 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:11:24,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18 states. [2020-09-25 01:11:24,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18 to 16. [2020-09-25 01:11:24,755 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-09-25 01:11:24,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-09-25 01:11:24,759 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 11 [2020-09-25 01:11:24,759 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:24,759 INFO L479 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-09-25 01:11:24,759 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:11:24,760 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-09-25 01:11:24,760 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-09-25 01:11:24,761 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:11:24,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 01:11:24,761 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:11:24,762 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:11:24,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:11:24,762 INFO L82 PathProgramCache]: Analyzing trace with hash 1625616653, now seen corresponding path program 1 times [2020-09-25 01:11:24,763 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:11:24,763 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1356770189] [2020-09-25 01:11:24,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:11:24,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:24,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:24,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:24,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:24,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 01:11:24,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 01:11:24,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 01:11:24,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 01:11:24,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 01:11:24,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 01:11:24,892 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 01:11:25,045 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:11:25,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:11:25,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:11:25,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:11:25,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 01:11:25,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:11:25,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 01:11:25,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:11:25,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:11:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:11:25,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:11:25,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:11:25,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:11:25,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1356770189] [2020-09-25 01:11:25,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:11:25,061 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 01:11:25,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [637411810] [2020-09-25 01:11:25,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 01:11:25,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:11:25,064 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 01:11:25,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 01:11:25,064 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 8 states. [2020-09-25 01:11:25,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:11:25,148 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-09-25 01:11:25,148 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 01:11:25,148 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 15 [2020-09-25 01:11:25,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:11:25,149 INFO L225 Difference]: With dead ends: 16 [2020-09-25 01:11:25,149 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 01:11:25,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-25 01:11:25,151 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 01:11:25,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 01:11:25,152 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 01:11:25,152 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 01:11:25,152 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-09-25 01:11:25,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:11:25,153 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 01:11:25,153 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 01:11:25,153 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 01:11:25,153 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 01:11:25,154 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:11:25,156 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 01:11:25,198 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 01:11:25,198 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:11:25,199 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 01:11:25,199 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 01:11:25,199 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 01:11:25,199 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 01:11:25,199 INFO L268 CegarLoopResult]: For program point L4-3(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:25,199 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:25,200 INFO L268 CegarLoopResult]: For program point L4(line 4) no Hoare annotation was computed. [2020-09-25 01:11:25,200 INFO L268 CegarLoopResult]: For program point L4-1(line 4) no Hoare annotation was computed. [2020-09-25 01:11:25,200 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 3 5) no Hoare annotation was computed. [2020-09-25 01:11:25,200 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 13 18) the Hoare annotation is: true [2020-09-25 01:11:25,200 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 13 18) no Hoare annotation was computed. [2020-09-25 01:11:25,200 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 01:11:25,201 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 01:11:25,201 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 13 18) no Hoare annotation was computed. [2020-09-25 01:11:25,201 INFO L268 CegarLoopResult]: For program point L15-3(line 15) no Hoare annotation was computed. [2020-09-25 01:11:25,201 INFO L268 CegarLoopResult]: For program point L15-4(line 15) no Hoare annotation was computed. [2020-09-25 01:11:25,201 INFO L268 CegarLoopResult]: For program point L15-5(line 15) no Hoare annotation was computed. [2020-09-25 01:11:25,201 INFO L264 CegarLoopResult]: At program point L15-6(line 15) the Hoare annotation is: (<= main_~i~0 1000000) [2020-09-25 01:11:25,202 INFO L264 CegarLoopResult]: At program point L15-7(line 15) the Hoare annotation is: (and (<= main_~i~0 1000000) (< 999999 main_~i~0)) [2020-09-25 01:11:25,202 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 6 11) the Hoare annotation is: true [2020-09-25 01:11:25,202 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:11:25,202 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 01:11:25,202 INFO L268 CegarLoopResult]: For program point L7(lines 7 9) no Hoare annotation was computed. [2020-09-25 01:11:25,203 INFO L268 CegarLoopResult]: For program point L7-2(lines 6 11) no Hoare annotation was computed. [2020-09-25 01:11:25,203 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 8) no Hoare annotation was computed. [2020-09-25 01:11:25,225 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:11:25 BoogieIcfgContainer [2020-09-25 01:11:25,225 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:11:25,232 INFO L168 Benchmark]: Toolchain (without parser) took 1796.21 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 103.8 MB in the beginning and 116.6 MB in the end (delta: -12.8 MB). Peak memory consumption was 43.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:25,234 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 01:11:25,235 INFO L168 Benchmark]: CACSL2BoogieTranslator took 295.71 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:25,236 INFO L168 Benchmark]: Boogie Preprocessor took 41.73 ms. Allocated memory is still 147.3 MB. Free memory was 93.9 MB in the beginning and 92.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:25,238 INFO L168 Benchmark]: RCFGBuilder took 367.19 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.5 MB in the beginning and 170.5 MB in the end (delta: -78.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:25,240 INFO L168 Benchmark]: TraceAbstraction took 1081.28 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 116.6 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:11:25,251 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 147.3 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 295.71 ms. Allocated memory is still 147.3 MB. Free memory was 103.2 MB in the beginning and 93.9 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 41.73 ms. Allocated memory is still 147.3 MB. Free memory was 93.9 MB in the beginning and 92.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 367.19 ms. Allocated memory was 147.3 MB in the beginning and 203.4 MB in the end (delta: 56.1 MB). Free memory was 92.5 MB in the beginning and 170.5 MB in the end (delta: -78.0 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1081.28 ms. Allocated memory is still 203.4 MB. Free memory was 170.5 MB in the beginning and 116.6 MB in the end (delta: 53.8 MB). Peak memory consumption was 53.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 8]: 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: 15]: Loop Invariant Derived loop invariant: i <= 1000000 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 27 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 28 SDtfs, 7 SDslu, 50 SDs, 0 SdLazy, 34 SolverSat, 2 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 10 NumberOfFragments, 15 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 596 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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...