/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=SHALLOWEST --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/loops/array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 01:44:10,765 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 01:44:10,769 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 01:44:10,824 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 01:44:10,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 01:44:10,830 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 01:44:10,832 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 01:44:10,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 01:44:10,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 01:44:10,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 01:44:10,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 01:44:10,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 01:44:10,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 01:44:10,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 01:44:10,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 01:44:10,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 01:44:10,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 01:44:10,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 01:44:10,865 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 01:44:10,867 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 01:44:10,869 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 01:44:10,870 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 01:44:10,871 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 01:44:10,872 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 01:44:10,875 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 01:44:10,876 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 01:44:10,876 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 01:44:10,877 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 01:44:10,877 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 01:44:10,878 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 01:44:10,879 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 01:44:10,880 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 01:44:10,881 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 01:44:10,881 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 01:44:10,883 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 01:44:10,883 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 01:44:10,884 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 01:44:10,884 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 01:44:10,884 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 01:44:10,885 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 01:44:10,886 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 01:44:10,887 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 [2020-10-27 01:44:10,913 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 01:44:10,913 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 01:44:10,915 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 01:44:10,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 01:44:10,915 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 01:44:10,915 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 01:44:10,916 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 01:44:10,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 01:44:10,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 01:44:10,916 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 01:44:10,916 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 01:44:10,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 01:44:10,917 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 01:44:10,917 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 01:44:10,917 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 01:44:10,917 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 01:44:10,918 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 01:44:10,918 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 01:44:10,918 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 01:44:10,918 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 01:44:10,919 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 01:44:10,919 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 01:44:10,919 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 01:44:10,919 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 01:44:10,920 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 01:44:10,920 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 01:44:10,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 01:44:10,920 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 01:44:10,920 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 01:44:10,920 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 01:44:11,323 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 01:44:11,351 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 01:44:11,354 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 01:44:11,355 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 01:44:11,356 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 01:44:11,357 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/array-1.c [2020-10-27 01:44:11,434 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daaf73a3/0853e83cd6ad4347a2902843de8c7ac4/FLAG7d2319d12 [2020-10-27 01:44:12,161 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 01:44:12,162 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/array-1.c [2020-10-27 01:44:12,170 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daaf73a3/0853e83cd6ad4347a2902843de8c7ac4/FLAG7d2319d12 [2020-10-27 01:44:12,511 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5daaf73a3/0853e83cd6ad4347a2902843de8c7ac4 [2020-10-27 01:44:12,514 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 01:44:12,521 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 01:44:12,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 01:44:12,525 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 01:44:12,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 01:44:12,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,533 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1c676c7d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12, skipping insertion in model container [2020-10-27 01:44:12,534 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,542 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 01:44:12,559 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 01:44:12,722 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:44:12,731 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 01:44:12,751 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 01:44:12,768 INFO L208 MainTranslator]: Completed translation [2020-10-27 01:44:12,769 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12 WrapperNode [2020-10-27 01:44:12,769 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 01:44:12,770 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 01:44:12,770 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 01:44:12,770 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 01:44:12,784 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,784 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,792 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,792 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,800 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,804 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (1/1) ... [2020-10-27 01:44:12,808 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 01:44:12,809 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 01:44:12,809 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 01:44:12,810 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 01:44:12,810 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (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 [2020-10-27 01:44:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 01:44:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 01:44:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 01:44:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 01:44:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 01:44:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 01:44:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 01:44:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 01:44:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 01:44:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 01:44:12,891 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 01:44:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 01:44:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 01:44:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 01:44:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 01:44:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 01:44:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 01:44:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 01:44:13,211 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 01:44:13,211 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 01:44:13,213 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:13 BoogieIcfgContainer [2020-10-27 01:44:13,214 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 01:44:13,216 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 01:44:13,216 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 01:44:13,220 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 01:44:13,220 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 01:44:12" (1/3) ... [2020-10-27 01:44:13,221 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5156f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:13, skipping insertion in model container [2020-10-27 01:44:13,221 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 01:44:12" (2/3) ... [2020-10-27 01:44:13,222 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1d5156f6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 01:44:13, skipping insertion in model container [2020-10-27 01:44:13,222 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 01:44:13" (3/3) ... [2020-10-27 01:44:13,224 INFO L111 eAbstractionObserver]: Analyzing ICFG array-1.c [2020-10-27 01:44:13,276 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 01:44:13,290 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 01:44:13,323 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 01:44:13,366 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 01:44:13,366 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 01:44:13,366 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 01:44:13,366 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 01:44:13,367 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 01:44:13,367 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 01:44:13,367 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 01:44:13,367 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 01:44:13,392 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states. [2020-10-27 01:44:13,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:44:13,400 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:13,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:13,402 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:13,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:13,410 INFO L82 PathProgramCache]: Analyzing trace with hash 1934270437, now seen corresponding path program 1 times [2020-10-27 01:44:13,420 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:13,421 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972404923] [2020-10-27 01:44:13,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:13,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:13,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:13,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:13,816 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:44:13,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-10-27 01:44:13,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:13,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 01:44:13,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:13,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 01:44:13,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:13,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:13,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:13,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:13,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:13,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 01:44:13,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:13,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:13,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:13,983 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:44:13,984 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972404923] [2020-10-27 01:44:13,986 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:44:13,986 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 01:44:13,987 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1077977290] [2020-10-27 01:44:13,992 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 01:44:13,992 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:14,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 01:44:14,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 01:44:14,010 INFO L87 Difference]: Start difference. First operand 26 states. Second operand 3 states. [2020-10-27 01:44:14,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:14,092 INFO L93 Difference]: Finished difference Result 40 states and 45 transitions. [2020-10-27 01:44:14,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 01:44:14,094 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-10-27 01:44:14,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:14,101 INFO L225 Difference]: With dead ends: 40 [2020-10-27 01:44:14,102 INFO L226 Difference]: Without dead ends: 16 [2020-10-27 01:44:14,105 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 [2020-10-27 01:44:14,124 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2020-10-27 01:44:14,143 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2020-10-27 01:44:14,145 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16 states. [2020-10-27 01:44:14,145 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2020-10-27 01:44:14,147 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 13 [2020-10-27 01:44:14,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:14,148 INFO L481 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2020-10-27 01:44:14,148 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 01:44:14,148 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2020-10-27 01:44:14,148 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-27 01:44:14,149 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:14,149 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:14,151 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 01:44:14,151 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:14,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:14,152 INFO L82 PathProgramCache]: Analyzing trace with hash 761664538, now seen corresponding path program 1 times [2020-10-27 01:44:14,152 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:14,153 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [586059095] [2020-10-27 01:44:14,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:14,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:14,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:14,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:14,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-10-27 01:44:14,359 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:14,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 01:44:14,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 01:44:14,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:44:14,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 01:44:14,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:44:14,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:14,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:14,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:14,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:14,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:14,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:14,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 01:44:14,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:14,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:14,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:14,480 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:44:14,481 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [586059095] [2020-10-27 01:44:14,481 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 01:44:14,481 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 01:44:14,482 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591189714] [2020-10-27 01:44:14,483 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 01:44:14,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:14,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 01:44:14,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 01:44:14,485 INFO L87 Difference]: Start difference. First operand 16 states and 17 transitions. Second operand 4 states. [2020-10-27 01:44:14,541 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:14,541 INFO L93 Difference]: Finished difference Result 26 states and 28 transitions. [2020-10-27 01:44:14,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 01:44:14,542 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-27 01:44:14,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:14,543 INFO L225 Difference]: With dead ends: 26 [2020-10-27 01:44:14,544 INFO L226 Difference]: Without dead ends: 19 [2020-10-27 01:44:14,545 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 [2020-10-27 01:44:14,545 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-27 01:44:14,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 17. [2020-10-27 01:44:14,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-27 01:44:14,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 18 transitions. [2020-10-27 01:44:14,553 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 18 transitions. Word has length 13 [2020-10-27 01:44:14,553 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:14,553 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 18 transitions. [2020-10-27 01:44:14,554 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 01:44:14,554 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 18 transitions. [2020-10-27 01:44:14,554 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:44:14,555 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:14,555 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:14,555 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 01:44:14,555 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:14,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:14,556 INFO L82 PathProgramCache]: Analyzing trace with hash 726671833, now seen corresponding path program 1 times [2020-10-27 01:44:14,556 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:14,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [272431101] [2020-10-27 01:44:14,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:14,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:14,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:15,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:15,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:44:15,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:15,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 530 [2020-10-27 01:44:15,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:15,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 01:44:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:44:15,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:44:15,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:44:15,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:15,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:15,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:15,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:15,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:15,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 01:44:15,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:15,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:15,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:15,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:44:15,445 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:44:15,446 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [272431101] [2020-10-27 01:44:15,446 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:44:15,446 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 01:44:15,447 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1692344659] [2020-10-27 01:44:15,448 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 01:44:15,449 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:15,450 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 01:44:15,452 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 01:44:15,452 INFO L87 Difference]: Start difference. First operand 17 states and 18 transitions. Second operand 9 states. [2020-10-27 01:44:15,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:15,727 INFO L93 Difference]: Finished difference Result 26 states and 27 transitions. [2020-10-27 01:44:15,728 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:44:15,728 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 16 [2020-10-27 01:44:15,728 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:15,729 INFO L225 Difference]: With dead ends: 26 [2020-10-27 01:44:15,729 INFO L226 Difference]: Without dead ends: 19 [2020-10-27 01:44:15,730 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-10-27 01:44:15,731 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2020-10-27 01:44:15,736 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 18. [2020-10-27 01:44:15,736 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18 states. [2020-10-27 01:44:15,737 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18 states to 18 states and 19 transitions. [2020-10-27 01:44:15,737 INFO L78 Accepts]: Start accepts. Automaton has 18 states and 19 transitions. Word has length 16 [2020-10-27 01:44:15,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:15,737 INFO L481 AbstractCegarLoop]: Abstraction has 18 states and 19 transitions. [2020-10-27 01:44:15,738 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 01:44:15,738 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states and 19 transitions. [2020-10-27 01:44:15,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 01:44:15,739 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:15,739 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:15,739 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 01:44:15,739 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:15,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:15,740 INFO L82 PathProgramCache]: Analyzing trace with hash 46613463, now seen corresponding path program 1 times [2020-10-27 01:44:15,740 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:15,741 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841143132] [2020-10-27 01:44:15,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:15,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:15,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:16,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:16,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-27 01:44:16,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:16,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-10-27 01:44:16,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 01:44:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:44:16,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 01:44:16,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:16,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:16,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:16,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:16,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:16,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:16,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:44:16,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:16,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:16,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:16,199 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:44:16,200 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841143132] [2020-10-27 01:44:16,200 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:44:16,200 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 01:44:16,201 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1469456527] [2020-10-27 01:44:16,201 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 01:44:16,201 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:16,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 01:44:16,202 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-10-27 01:44:16,202 INFO L87 Difference]: Start difference. First operand 18 states and 19 transitions. Second operand 8 states. [2020-10-27 01:44:16,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:16,373 INFO L93 Difference]: Finished difference Result 30 states and 32 transitions. [2020-10-27 01:44:16,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 01:44:16,374 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 16 [2020-10-27 01:44:16,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:16,375 INFO L225 Difference]: With dead ends: 30 [2020-10-27 01:44:16,375 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 01:44:16,376 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-10-27 01:44:16,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 01:44:16,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 20. [2020-10-27 01:44:16,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 01:44:16,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 22 transitions. [2020-10-27 01:44:16,383 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 22 transitions. Word has length 16 [2020-10-27 01:44:16,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:16,383 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 22 transitions. [2020-10-27 01:44:16,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 01:44:16,383 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 22 transitions. [2020-10-27 01:44:16,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 01:44:16,384 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 01:44:16,384 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 01:44:16,384 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 01:44:16,385 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 01:44:16,385 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 01:44:16,385 INFO L82 PathProgramCache]: Analyzing trace with hash 1255991736, now seen corresponding path program 1 times [2020-10-27 01:44:16,386 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 01:44:16,386 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352968733] [2020-10-27 01:44:16,386 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 01:44:16,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:16,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:16,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:16,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:16,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 01:44:16,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 01:44:16,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 456 [2020-10-27 01:44:16,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 01:44:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 01:44:16,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 01:44:16,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 01:44:16,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 01:44:17,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 01:44:17,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 01:44:17,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 01:44:17,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 01:44:17,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 01:44:17,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 01:44:17,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 01:44:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 01:44:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 01:44:17,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 01:44:17,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 01:44:17,014 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 01:44:17,015 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352968733] [2020-10-27 01:44:17,015 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 01:44:17,015 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 01:44:17,015 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1790102389] [2020-10-27 01:44:17,016 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 01:44:17,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 01:44:17,022 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 01:44:17,023 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:44:17,023 INFO L87 Difference]: Start difference. First operand 20 states and 22 transitions. Second operand 5 states. [2020-10-27 01:44:17,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 01:44:17,054 INFO L93 Difference]: Finished difference Result 22 states and 24 transitions. [2020-10-27 01:44:17,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 01:44:17,055 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-10-27 01:44:17,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 01:44:17,056 INFO L225 Difference]: With dead ends: 22 [2020-10-27 01:44:17,056 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 01:44:17,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 01:44:17,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 01:44:17,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 01:44:17,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 01:44:17,058 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 01:44:17,058 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 19 [2020-10-27 01:44:17,059 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 01:44:17,059 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 01:44:17,059 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 01:44:17,059 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 01:44:17,059 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 01:44:17,059 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 01:44:17,063 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 01:44:17,346 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 01:44:17,346 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 01:44:17,346 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 01:44:17,347 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 01:44:17,347 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:44:17,347 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|)) [2020-10-27 01:44:17,347 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:44:17,347 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 01:44:17,348 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 01:44:17,348 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 01:44:17,348 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 01:44:17,348 INFO L270 CegarLoopResult]: At program point mainENTRY(lines 13 31) the Hoare annotation is: (and (= |old(#length)| |#length|) (= |old(#valid)| |#valid|)) [2020-10-27 01:44:17,348 INFO L270 CegarLoopResult]: At program point L28(line 28) the Hoare annotation is: (let ((.cse1 (<= main_~SIZE~0 1)) (.cse2 (= |main_~#array~0.offset| 0)) (.cse0 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|)) (.cse3 (< 0 (+ (div main_~SIZE~0 4294967296) 1)))) (or (and (= main_~menor~0 .cse0) .cse1 .cse2 (= main_~menor~0 |main_#t~mem12|) .cse3) (let ((.cse4 (+ main_~menor~0 1))) (and .cse1 .cse2 (<= .cse4 .cse0) (<= .cse4 |main_#t~mem12|) .cse3)))) [2020-10-27 01:44:17,348 INFO L274 CegarLoopResult]: For program point L28-1(line 28) no Hoare annotation was computed. [2020-10-27 01:44:17,349 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 13 31) no Hoare annotation was computed. [2020-10-27 01:44:17,349 INFO L274 CegarLoopResult]: For program point L24(lines 24 25) no Hoare annotation was computed. [2020-10-27 01:44:17,349 INFO L274 CegarLoopResult]: For program point L21-2(lines 21 26) no Hoare annotation was computed. [2020-10-27 01:44:17,349 INFO L270 CegarLoopResult]: At program point L21-3(lines 21 26) the Hoare annotation is: (let ((.cse0 (<= main_~SIZE~0 1)) (.cse1 (= |main_~#array~0.offset| 0))) (or (and (<= 1 main_~SIZE~0) (= main_~j~0 0) .cse0 .cse1) (and (<= main_~SIZE~0 main_~j~0) (let ((.cse2 (select (select |#memory_int| |main_~#array~0.base|) |main_~#array~0.offset|))) (or (and .cse0 .cse1 (<= (+ main_~menor~0 1) .cse2)) (and (= main_~menor~0 .cse2) .cse0 .cse1))) (<= (div main_~j~0 4294967296) 0) (< 0 (+ (div main_~SIZE~0 4294967296) 1))))) [2020-10-27 01:44:17,349 INFO L274 CegarLoopResult]: For program point L21-4(lines 21 26) no Hoare annotation was computed. [2020-10-27 01:44:17,350 INFO L274 CegarLoopResult]: For program point mainFINAL(lines 13 31) no Hoare annotation was computed. [2020-10-27 01:44:17,350 INFO L277 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 5 10) the Hoare annotation is: true [2020-10-27 01:44:17,350 INFO L274 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:44:17,350 INFO L270 CegarLoopResult]: At program point L7(line 7) the Hoare annotation is: (= |__VERIFIER_assert_#in~cond| 0) [2020-10-27 01:44:17,350 INFO L274 CegarLoopResult]: For program point L6(lines 6 8) no Hoare annotation was computed. [2020-10-27 01:44:17,350 INFO L274 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-10-27 01:44:17,350 INFO L274 CegarLoopResult]: For program point L6-2(lines 5 10) no Hoare annotation was computed. [2020-10-27 01:44:17,362 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:44:17,363 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:44:17,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:44:17,369 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:44:17,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 01:44:17 BoogieIcfgContainer [2020-10-27 01:44:17,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 01:44:17,375 INFO L168 Benchmark]: Toolchain (without parser) took 4857.60 ms. Allocated memory was 152.0 MB in the beginning and 208.7 MB in the end (delta: 56.6 MB). Free memory was 127.0 MB in the beginning and 136.0 MB in the end (delta: -9.0 MB). Peak memory consumption was 48.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:17,376 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 01:44:17,377 INFO L168 Benchmark]: CACSL2BoogieTranslator took 244.78 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:17,377 INFO L168 Benchmark]: Boogie Preprocessor took 38.43 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:17,378 INFO L168 Benchmark]: RCFGBuilder took 404.44 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 101.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:17,379 INFO L168 Benchmark]: TraceAbstraction took 4156.49 ms. Allocated memory was 152.0 MB in the beginning and 208.7 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 136.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 22.5 MB. Max. memory is 8.0 GB. [2020-10-27 01:44:17,383 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 152.0 MB. Free memory was 124.4 MB in the beginning and 124.3 MB in the end (delta: 102.2 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 244.78 ms. Allocated memory is still 152.0 MB. Free memory was 126.3 MB in the beginning and 117.1 MB in the end (delta: 9.2 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 38.43 ms. Allocated memory is still 152.0 MB. Free memory was 117.1 MB in the beginning and 115.7 MB in the end (delta: 1.5 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 404.44 ms. Allocated memory is still 152.0 MB. Free memory was 115.5 MB in the beginning and 101.2 MB in the end (delta: 14.3 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 4156.49 ms. Allocated memory was 152.0 MB in the beginning and 208.7 MB in the end (delta: 56.6 MB). Free memory was 100.8 MB in the beginning and 136.0 MB in the end (delta: -35.2 MB). Peak memory consumption was 22.5 MB. 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 - 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: 21]: Loop Invariant [2020-10-27 01:44:17,393 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:44:17,393 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:44:17,394 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-10-27 01:44:17,394 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int Derived loop invariant: (((1 <= SIZE && j == 0) && SIZE <= 1) && array == 0) || (((SIZE <= j && (((SIZE <= 1 && array == 0) && menor + 1 <= unknown-#memory_int-unknown[array][array]) || ((menor == unknown-#memory_int-unknown[array][array] && SIZE <= 1) && array == 0))) && j / 4294967296 <= 0) && 0 < SIZE / 4294967296 + 1) - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 26 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 3.6s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 58 SDtfs, 33 SDslu, 102 SDs, 0 SdLazy, 205 SolverSat, 17 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 43 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.8s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred 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, 5 MinimizatonAttempts, 6 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 9 LocationsWithAnnotation, 21 PreInvPairs, 25 NumberOfFragments, 159 HoareAnnotationTreeSize, 21 FomulaSimplifications, 38 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 9 FomulaSimplificationsInter, 121 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.5s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 72 ConstructedInterpolants, 0 QuantifiedInterpolants, 6219 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 4/7 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...