/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-acceleration/array_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:33:44,769 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:33:44,773 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:33:44,826 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:33:44,827 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:33:44,833 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:33:44,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:33:44,841 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:33:44,845 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:33:44,851 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:33:44,852 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:33:44,854 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:33:44,854 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:33:44,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:33:44,861 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:33:44,864 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:33:44,865 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:33:44,868 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:33:44,877 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:33:44,885 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:33:44,887 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:33:44,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:33:44,892 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:33:44,894 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:33:44,915 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:33:44,916 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:33:44,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:33:44,919 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:33:44,920 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:33:44,921 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:33:44,921 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:33:44,922 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:33:44,924 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:33:44,925 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:33:44,926 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:33:44,926 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:33:44,927 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:33:44,927 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:33:44,927 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:33:44,928 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:33:44,929 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:33:44,937 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 09:33:44,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:33:44,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:33:44,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:33:44,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:33:44,979 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:33:44,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:33:44,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:33:44,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:33:44,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:33:44,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:33:44,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:33:44,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:33:44,981 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:33:44,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:33:44,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:33:44,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:33:44,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:33:44,982 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:33:44,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:33:44,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:33:44,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:33:44,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:33:44,983 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:33:44,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:33:44,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:33:44,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:33:44,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:33:44,984 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:33:44,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:33:44,984 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:33:45,396 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:33:45,424 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:33:45,428 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:33:45,429 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:33:45,430 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:33:45,431 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-10-29 09:33:45,537 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d4616b8/43de697205cc49c1848afdff41f8c3a8/FLAG0a70707a0 [2020-10-29 09:33:46,136 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:33:46,137 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-10-29 09:33:46,144 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d4616b8/43de697205cc49c1848afdff41f8c3a8/FLAG0a70707a0 [2020-10-29 09:33:46,517 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/92d4616b8/43de697205cc49c1848afdff41f8c3a8 [2020-10-29 09:33:46,532 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:33:46,543 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:33:46,549 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:33:46,549 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:33:46,553 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:33:46,556 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,561 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7b0f579a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46, skipping insertion in model container [2020-10-29 09:33:46,562 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,571 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:33:46,593 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:33:46,768 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:33:46,777 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:33:46,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:33:46,805 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:33:46,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46 WrapperNode [2020-10-29 09:33:46,806 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:33:46,808 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:33:46,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:33:46,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:33:46,823 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,823 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,831 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,832 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,839 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (1/1) ... [2020-10-29 09:33:46,850 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:33:46,851 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:33:46,851 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:33:46,851 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:33:46,852 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (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 09:33:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:33:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:33:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:33:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-29 09:33:46,941 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:33:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:33:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:33:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:33:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:33:46,942 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-29 09:33:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:33:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:33:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:33:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:33:46,943 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:33:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:33:46,944 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:33:47,263 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:33:47,263 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-29 09:33:47,265 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:33:47 BoogieIcfgContainer [2020-10-29 09:33:47,265 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:33:47,267 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:33:47,268 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:33:47,271 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:33:47,272 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:33:46" (1/3) ... [2020-10-29 09:33:47,273 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5431ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:33:47, skipping insertion in model container [2020-10-29 09:33:47,273 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:33:46" (2/3) ... [2020-10-29 09:33:47,274 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4d5431ee and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:33:47, skipping insertion in model container [2020-10-29 09:33:47,274 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:33:47" (3/3) ... [2020-10-29 09:33:47,276 INFO L111 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2020-10-29 09:33:47,289 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:33:47,294 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:33:47,308 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:33:47,337 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:33:47,338 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:33:47,338 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:33:47,338 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:33:47,338 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:33:47,338 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:33:47,339 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:33:47,339 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:33:47,355 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-29 09:33:47,361 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:33:47,362 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:33:47,362 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:33:47,363 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:33:47,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:33:47,370 INFO L82 PathProgramCache]: Analyzing trace with hash 665310781, now seen corresponding path program 1 times [2020-10-29 09:33:47,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:33:47,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279037868] [2020-10-29 09:33:47,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:33:47,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:47,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:47,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:47,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:33:47,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:47,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-29 09:33:47,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:47,722 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:47,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:33:47,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:47,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:33:47,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:33:47,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:47,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:47,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:47,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:33:47,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:47,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:33:47,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:47,835 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:47,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:47,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:47,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:33:47,850 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 09:33:47,851 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279037868] [2020-10-29 09:33:47,853 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:33:47,853 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-29 09:33:47,854 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [833569040] [2020-10-29 09:33:47,860 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-29 09:33:47,860 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:33:47,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-29 09:33:47,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-29 09:33:47,886 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 3 states. [2020-10-29 09:33:48,031 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:33:48,031 INFO L93 Difference]: Finished difference Result 39 states and 43 transitions. [2020-10-29 09:33:48,032 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-29 09:33:48,033 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-29 09:33:48,034 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:33:48,041 INFO L225 Difference]: With dead ends: 39 [2020-10-29 09:33:48,042 INFO L226 Difference]: Without dead ends: 15 [2020-10-29 09:33:48,045 INFO L677 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 [2020-10-29 09:33:48,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 15 states. [2020-10-29 09:33:48,086 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 15 to 15. [2020-10-29 09:33:48,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 15 states. [2020-10-29 09:33:48,088 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 15 transitions. [2020-10-29 09:33:48,090 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 15 transitions. Word has length 13 [2020-10-29 09:33:48,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:33:48,091 INFO L481 AbstractCegarLoop]: Abstraction has 15 states and 15 transitions. [2020-10-29 09:33:48,091 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-29 09:33:48,091 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 15 transitions. [2020-10-29 09:33:48,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-29 09:33:48,092 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:33:48,092 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:33:48,093 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:33:48,093 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:33:48,094 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:33:48,094 INFO L82 PathProgramCache]: Analyzing trace with hash -364744009, now seen corresponding path program 1 times [2020-10-29 09:33:48,094 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:33:48,095 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [485775905] [2020-10-29 09:33:48,095 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:33:48,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:48,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:48,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-29 09:33:48,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:48,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-29 09:33:48,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:48,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:33:48,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:33:48,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-29 09:33:48,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:33:48,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:33:48,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:48,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:48,285 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:48,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:33:48,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:48,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-29 09:33:48,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:48,286 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:48,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:48,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:33:48,294 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 09:33:48,295 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [485775905] [2020-10-29 09:33:48,295 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:33:48,295 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-29 09:33:48,295 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690513770] [2020-10-29 09:33:48,297 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-29 09:33:48,298 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:33:48,299 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-29 09:33:48,299 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:33:48,299 INFO L87 Difference]: Start difference. First operand 15 states and 15 transitions. Second operand 4 states. [2020-10-29 09:33:48,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:33:48,355 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-29 09:33:48,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-29 09:33:48,356 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-29 09:33:48,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:33:48,357 INFO L225 Difference]: With dead ends: 24 [2020-10-29 09:33:48,357 INFO L226 Difference]: Without dead ends: 17 [2020-10-29 09:33:48,358 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-29 09:33:48,359 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-29 09:33:48,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 16. [2020-10-29 09:33:48,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-29 09:33:48,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 16 transitions. [2020-10-29 09:33:48,367 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 16 transitions. Word has length 13 [2020-10-29 09:33:48,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:33:48,367 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 16 transitions. [2020-10-29 09:33:48,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-29 09:33:48,367 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 16 transitions. [2020-10-29 09:33:48,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-29 09:33:48,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:33:48,368 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-29 09:33:48,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:33:48,369 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:33:48,370 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:33:48,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1375402741, now seen corresponding path program 1 times [2020-10-29 09:33:48,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:33:48,371 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148454476] [2020-10-29 09:33:48,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:33:48,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:48,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:48,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:48,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:48,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-29 09:33:48,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:33:48,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 344 [2020-10-29 09:33:48,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:48,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:33:48,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-29 09:33:48,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-29 09:33:48,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:33:48,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:33:48,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:33:48,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:33:48,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:33:48,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:33:48,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:33:48,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:33:48,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:33:48,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:33:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:33:48,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:33:48,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:33:48,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:33:48,955 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:33:48,955 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148454476] [2020-10-29 09:33:48,956 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:33:48,956 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-29 09:33:48,956 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161220506] [2020-10-29 09:33:48,957 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-29 09:33:48,957 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:33:48,958 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-29 09:33:48,959 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-10-29 09:33:48,959 INFO L87 Difference]: Start difference. First operand 16 states and 16 transitions. Second operand 9 states. [2020-10-29 09:33:49,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:33:49,151 INFO L93 Difference]: Finished difference Result 16 states and 16 transitions. [2020-10-29 09:33:49,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-29 09:33:49,151 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 15 [2020-10-29 09:33:49,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:33:49,152 INFO L225 Difference]: With dead ends: 16 [2020-10-29 09:33:49,152 INFO L226 Difference]: Without dead ends: 0 [2020-10-29 09:33:49,153 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:33:49,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-29 09:33:49,154 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-29 09:33:49,154 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-29 09:33:49,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-29 09:33:49,155 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 15 [2020-10-29 09:33:49,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:33:49,155 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-29 09:33:49,155 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-29 09:33:49,156 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-29 09:33:49,156 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-29 09:33:49,156 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:33:49,159 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-29 09:33:49,420 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-29 09:33:49,421 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-29 09:33:49,421 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-29 09:33:49,421 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-29 09:33:49,422 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:33:49,422 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 09:33:49,422 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:33:49,422 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-29 09:33:49,423 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-29 09:33:49,423 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-29 09:33:49,423 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-29 09:33:49,423 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 12 21) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-29 09:33:49,423 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 12 21) no Hoare annotation was computed. [2020-10-29 09:33:49,424 INFO L270 CegarLoopResult]: At program point L20(line 20) the Hoare annotation is: (and (= 1023 |main_#t~mem8|) (= 1023 (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4092)))) [2020-10-29 09:33:49,424 INFO L274 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-10-29 09:33:49,424 INFO L274 CegarLoopResult]: For program point L16-2(lines 16 18) no Hoare annotation was computed. [2020-10-29 09:33:49,424 INFO L270 CegarLoopResult]: At program point L16-3(lines 16 18) the Hoare annotation is: (or (<= main_~i~0 1023) (= 1023 (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4092)))) [2020-10-29 09:33:49,424 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 12 21) no Hoare annotation was computed. [2020-10-29 09:33:49,424 INFO L274 CegarLoopResult]: For program point L16-4(lines 16 18) no Hoare annotation was computed. [2020-10-29 09:33:49,425 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-29 09:33:49,425 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-29 09:33:49,425 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (not (<= 1 |__VERIFIER_assert_#in~cond|)) [2020-10-29 09:33:49,425 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-29 09:33:49,425 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-29 09:33:49,426 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-29 09:33:49,437 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:33:49,443 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:33:49,445 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 29.10 09:33:49 BoogieIcfgContainer [2020-10-29 09:33:49,446 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-29 09:33:49,449 INFO L168 Benchmark]: Toolchain (without parser) took 2912.61 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 138.7 MB in the beginning and 147.7 MB in the end (delta: -9.1 MB). Peak memory consumption was 24.9 MB. Max. memory is 8.0 GB. [2020-10-29 09:33:49,450 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-29 09:33:49,451 INFO L168 Benchmark]: CACSL2BoogieTranslator took 257.79 ms. Allocated memory is still 163.6 MB. Free memory was 138.1 MB in the beginning and 129.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-29 09:33:49,452 INFO L168 Benchmark]: Boogie Preprocessor took 42.34 ms. Allocated memory is still 163.6 MB. Free memory was 129.0 MB in the beginning and 127.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. [2020-10-29 09:33:49,454 INFO L168 Benchmark]: RCFGBuilder took 414.49 ms. Allocated memory is still 163.6 MB. Free memory was 127.4 MB in the beginning and 114.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. [2020-10-29 09:33:49,455 INFO L168 Benchmark]: TraceAbstraction took 2178.67 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 114.5 MB in the beginning and 147.7 MB in the end (delta: -33.2 MB). Peak memory consumption was 770.6 kB. Max. memory is 8.0 GB. [2020-10-29 09:33:49,459 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 163.6 MB. Free memory is still 136.7 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 257.79 ms. Allocated memory is still 163.6 MB. Free memory was 138.1 MB in the beginning and 129.0 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 42.34 ms. Allocated memory is still 163.6 MB. Free memory was 129.0 MB in the beginning and 127.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.0 MB. Max. memory is 8.0 GB. * RCFGBuilder took 414.49 ms. Allocated memory is still 163.6 MB. Free memory was 127.4 MB in the beginning and 114.9 MB in the end (delta: 12.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2178.67 ms. Allocated memory was 163.6 MB in the beginning and 197.1 MB in the end (delta: 33.6 MB). Free memory was 114.5 MB in the beginning and 147.7 MB in the end (delta: -33.2 MB). Peak memory consumption was 770.6 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int - GenericResult: Unfinished Backtranslation unknown boogie variable #memory_int * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: 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: 16]: Loop Invariant [2020-10-29 09:33:49,469 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-29 09:33:49,469 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: i <= 1023 || 1023 == unknown-#memory_int-unknown[A][A + 4092] - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 36 SDtfs, 14 SDslu, 37 SDs, 0 SdLazy, 71 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 22 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=25occurred 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, 3 MinimizatonAttempts, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 15 PreInvPairs, 17 NumberOfFragments, 72 HoareAnnotationTreeSize, 15 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 73 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 41 NumberOfCodeBlocks, 41 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 38 ConstructedInterpolants, 0 QuantifiedInterpolants, 2306 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...