/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:31:45,793 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:31:45,797 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:31:45,825 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:31:45,825 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:31:45,826 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:31:45,828 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:31:45,830 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:31:45,831 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:31:45,833 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:31:45,834 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:31:45,835 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:31:45,835 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:31:45,837 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:31:45,838 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:31:45,839 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:31:45,840 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:31:45,841 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:31:45,843 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:31:45,845 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:31:45,850 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:31:45,851 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:31:45,855 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:31:45,857 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:31:45,859 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:31:45,862 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:31:45,863 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:31:45,864 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:31:45,864 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:31:45,867 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:31:45,868 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:31:45,869 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:31:45,869 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:31:45,870 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:31:45,873 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:31:45,873 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:31:45,874 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:31:45,875 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:31:45,875 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:31:45,877 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:31:45,879 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:31:45,880 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:31:45,944 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:31:45,945 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:31:45,947 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:31:45,947 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:31:45,948 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:31:45,948 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:31:45,948 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:31:45,948 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:31:45,949 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:31:45,949 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:31:45,949 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:31:45,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:31:45,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:31:45,950 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:31:45,951 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:31:45,951 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:31:45,952 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:31:45,952 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:31:45,952 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:31:45,952 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:31:45,952 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:31:45,953 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:31:45,953 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:31:45,953 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:31:45,953 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:31:45,953 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:31:45,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:31:45,954 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:31:45,954 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:31:45,954 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:31:46,437 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:31:46,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:31:46,469 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:31:46,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:31:46,475 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:31:46,476 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-09-25 12:31:46,564 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef3a25901/34eb2a3f978e4c938c310219e3a7fdeb/FLAG5d76393b8 [2020-09-25 12:31:47,137 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:31:47,138 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-acceleration/array_1-2.c [2020-09-25 12:31:47,146 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef3a25901/34eb2a3f978e4c938c310219e3a7fdeb/FLAG5d76393b8 [2020-09-25 12:31:47,507 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ef3a25901/34eb2a3f978e4c938c310219e3a7fdeb [2020-09-25 12:31:47,524 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:31:47,532 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:31:47,535 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:47,535 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:31:47,540 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:31:47,541 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:47,546 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6251f5ac and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47, skipping insertion in model container [2020-09-25 12:31:47,546 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:47,555 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:31:47,579 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:31:47,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:47,874 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:31:47,895 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:31:47,917 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:31:47,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47 WrapperNode [2020-09-25 12:31:47,918 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:31:47,919 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:31:47,919 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:31:47,919 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:31:48,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:48,028 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:48,037 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:48,037 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:48,044 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:48,050 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:48,051 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... [2020-09-25 12:31:48,054 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:31:48,055 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:31:48,055 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:31:48,055 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:31:48,057 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:31:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:31:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:31:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 12:31:48,130 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:31:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:31:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 12:31:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:31:48,131 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 12:31:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 12:31:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 12:31:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 12:31:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:31:48,132 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:31:48,381 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:31:48,382 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:31:48,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:48 BoogieIcfgContainer [2020-09-25 12:31:48,388 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:31:48,390 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:31:48,390 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:31:48,394 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:31:48,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:31:47" (1/3) ... [2020-09-25 12:31:48,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c490a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:48, skipping insertion in model container [2020-09-25 12:31:48,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:31:47" (2/3) ... [2020-09-25 12:31:48,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65c490a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:31:48, skipping insertion in model container [2020-09-25 12:31:48,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:31:48" (3/3) ... [2020-09-25 12:31:48,399 INFO L109 eAbstractionObserver]: Analyzing ICFG array_1-2.c [2020-09-25 12:31:48,415 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:31:48,428 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:31:48,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:31:48,500 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:31:48,501 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:31:48,501 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:31:48,501 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:31:48,501 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:31:48,502 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:31:48,502 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:31:48,502 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:31:48,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 12:31:48,535 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:31:48,536 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:48,537 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:48,538 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:48,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:48,545 INFO L82 PathProgramCache]: Analyzing trace with hash -439118320, now seen corresponding path program 1 times [2020-09-25 12:31:48,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:48,559 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1068837899] [2020-09-25 12:31:48,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:48,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:48,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:48,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:31:48,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:48,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 12:31:48,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:48,789 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:31:48,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:48,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:31:48,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:31:48,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:48,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:48,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:48,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:31:48,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:48,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:31:48,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:48,890 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:48,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:48,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:48,907 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:31:48,908 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1068837899] [2020-09-25 12:31:48,913 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:31:48,913 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 12:31:48,914 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1738878238] [2020-09-25 12:31:48,926 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 12:31:48,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:48,941 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 12:31:48,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:31:48,944 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-09-25 12:31:49,042 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:49,043 INFO L93 Difference]: Finished difference Result 45 states and 48 transitions. [2020-09-25 12:31:49,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 12:31:49,045 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2020-09-25 12:31:49,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:49,056 INFO L225 Difference]: With dead ends: 45 [2020-09-25 12:31:49,056 INFO L226 Difference]: Without dead ends: 21 [2020-09-25 12:31:49,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 12:31:49,080 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-09-25 12:31:49,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-09-25 12:31:49,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-09-25 12:31:49,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2020-09-25 12:31:49,103 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 16 [2020-09-25 12:31:49,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:49,103 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2020-09-25 12:31:49,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 12:31:49,104 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2020-09-25 12:31:49,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:31:49,105 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:49,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:49,105 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:31:49,106 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:49,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:49,106 INFO L82 PathProgramCache]: Analyzing trace with hash -696780679, now seen corresponding path program 1 times [2020-09-25 12:31:49,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:49,107 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1388576330] [2020-09-25 12:31:49,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:49,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:49,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:49,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:49,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:31:49,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:49,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 12:31:49,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:49,237 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:31:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:31:49,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-09-25 12:31:49,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:49,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:31:49,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:49,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:49,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:49,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:31:49,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:49,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:31:49,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:49,321 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:49,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:49,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:49,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:31:49,337 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:31:49,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1388576330] [2020-09-25 12:31:49,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:31:49,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:31:49,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481392441] [2020-09-25 12:31:49,343 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:31:49,344 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:49,344 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:31:49,344 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:31:49,345 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand 4 states. [2020-09-25 12:31:49,415 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:49,416 INFO L93 Difference]: Finished difference Result 31 states and 31 transitions. [2020-09-25 12:31:49,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 12:31:49,416 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-09-25 12:31:49,417 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:49,418 INFO L225 Difference]: With dead ends: 31 [2020-09-25 12:31:49,418 INFO L226 Difference]: Without dead ends: 25 [2020-09-25 12:31:49,419 INFO L675 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 [2020-09-25 12:31:49,420 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-09-25 12:31:49,425 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 22. [2020-09-25 12:31:49,425 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-09-25 12:31:49,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-09-25 12:31:49,426 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 16 [2020-09-25 12:31:49,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:49,427 INFO L479 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-09-25 12:31:49,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:31:49,427 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-09-25 12:31:49,428 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 12:31:49,428 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:31:49,428 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:31:49,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:31:49,429 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:31:49,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:31:49,429 INFO L82 PathProgramCache]: Analyzing trace with hash 908018199, now seen corresponding path program 1 times [2020-09-25 12:31:49,429 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:31:49,430 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1496714226] [2020-09-25 12:31:49,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:31:49,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:49,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:49,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:49,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:49,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 12:31:49,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:31:49,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-09-25 12:31:49,816 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:49,816 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:31:49,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 12:31:49,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:31:49,817 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:31:50,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:31:50,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:31:50,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:31:50,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:31:50,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:31:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:31:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:31:50,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:31:50,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:31:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:31:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:31:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:31:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:31:50,059 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:31:50,060 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1496714226] [2020-09-25 12:31:50,060 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:31:50,060 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-09-25 12:31:50,061 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [984978469] [2020-09-25 12:31:50,061 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:31:50,061 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:31:50,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:31:50,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:31:50,062 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 11 states. [2020-09-25 12:31:50,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:31:50,246 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2020-09-25 12:31:50,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:31:50,246 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 21 [2020-09-25 12:31:50,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:31:50,247 INFO L225 Difference]: With dead ends: 23 [2020-09-25 12:31:50,247 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 12:31:50,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:31:50,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 12:31:50,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 12:31:50,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 12:31:50,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 12:31:50,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-25 12:31:50,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:31:50,250 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 12:31:50,250 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:31:50,250 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 12:31:50,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 12:31:50,251 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:31:50,254 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 12:31:50,326 INFO L268 CegarLoopResult]: For program point L-1(line -1) no Hoare annotation was computed. [2020-09-25 12:31:50,326 INFO L268 CegarLoopResult]: For program point L-1-1(line -1) no Hoare annotation was computed. [2020-09-25 12:31:50,326 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:31:50,327 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-09-25 12:31:50,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:31:50,327 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 12:31:50,327 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 12:31:50,328 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 12:31:50,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 12:31:50,328 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 10 19) the Hoare annotation is: (= |old(#valid)| |#valid|) [2020-09-25 12:31:50,328 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 19) no Hoare annotation was computed. [2020-09-25 12:31:50,328 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= 1023 |main_#t~mem1|) (= 1023 (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4092)))) [2020-09-25 12:31:50,329 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 12:31:50,329 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 12:31:50,329 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 12:31:50,329 INFO L268 CegarLoopResult]: For program point L15-1(lines 14 16) no Hoare annotation was computed. [2020-09-25 12:31:50,329 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 19) no Hoare annotation was computed. [2020-09-25 12:31:50,329 INFO L268 CegarLoopResult]: For program point L11(line 11) no Hoare annotation was computed. [2020-09-25 12:31:50,330 INFO L268 CegarLoopResult]: For program point L14-3(line 14) no Hoare annotation was computed. [2020-09-25 12:31:50,330 INFO L268 CegarLoopResult]: For program point L14-4(line 14) no Hoare annotation was computed. [2020-09-25 12:31:50,330 INFO L268 CegarLoopResult]: For program point L11-1(line 11) no Hoare annotation was computed. [2020-09-25 12:31:50,330 INFO L264 CegarLoopResult]: At program point L14-5(lines 14 16) the Hoare annotation is: (or (<= main_~i~0 1023) (= 1023 (select (select |#memory_int| |main_~#A~0.base|) (+ |main_~#A~0.offset| 4092)))) [2020-09-25 12:31:50,330 INFO L268 CegarLoopResult]: For program point L11-2(line 11) no Hoare annotation was computed. [2020-09-25 12:31:50,331 INFO L268 CegarLoopResult]: For program point L14-6(lines 14 16) no Hoare annotation was computed. [2020-09-25 12:31:50,331 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 12:31:50,331 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 12:31:50,331 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 12:31:50,331 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 12:31:50,332 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 12:31:50,332 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 12:31:50,354 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 12:31:50,361 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 12:31:50,364 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:31:50 BoogieIcfgContainer [2020-09-25 12:31:50,365 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 12:31:50,368 INFO L168 Benchmark]: Toolchain (without parser) took 2839.19 ms. Allocated memory was 145.8 MB in the beginning and 235.4 MB in the end (delta: 89.7 MB). Free memory was 102.0 MB in the beginning and 159.2 MB in the end (delta: -57.2 MB). Peak memory consumption was 32.5 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:50,369 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 12:31:50,371 INFO L168 Benchmark]: CACSL2BoogieTranslator took 383.31 ms. Allocated memory is still 145.8 MB. Free memory was 101.3 MB in the beginning and 91.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:50,372 INFO L168 Benchmark]: Boogie Preprocessor took 135.81 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 181.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:50,373 INFO L168 Benchmark]: RCFGBuilder took 333.94 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 168.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:50,374 INFO L168 Benchmark]: TraceAbstraction took 1974.83 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 159.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 GB. [2020-09-25 12:31:50,378 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.8 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 383.31 ms. Allocated memory is still 145.8 MB. Free memory was 101.3 MB in the beginning and 91.7 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.81 ms. Allocated memory was 145.8 MB in the beginning and 203.4 MB in the end (delta: 57.7 MB). Free memory was 91.7 MB in the beginning and 181.5 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 333.94 ms. Allocated memory is still 203.4 MB. Free memory was 180.9 MB in the beginning and 168.0 MB in the end (delta: 12.8 MB). Peak memory consumption was 12.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1974.83 ms. Allocated memory was 203.4 MB in the beginning and 235.4 MB in the end (delta: 32.0 MB). Free memory was 167.4 MB in the beginning and 159.2 MB in the end (delta: 8.2 MB). Peak memory consumption was 40.2 MB. Max. memory is 7.1 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: 5]: 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: 14]: Loop Invariant [2020-09-25 12:31:50,388 WARN L1295 BoogieBacktranslator]: unknown boogie variable #memory_int [2020-09-25 12:31:50,388 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 4 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.7s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 57 SDtfs, 22 SDslu, 78 SDs, 0 SdLazy, 104 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 26 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 3 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 11 NumberOfFragments, 42 HoareAnnotationTreeSize, 9 FomulaSimplifications, 14 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 35 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 53 NumberOfCodeBlocks, 53 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 2910 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...