/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:19:07,234 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:19:07,238 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:19:07,283 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:19:07,284 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:19:07,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:19:07,295 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:19:07,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:19:07,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:19:07,305 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:19:07,306 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:19:07,307 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:19:07,307 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:19:07,310 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:19:07,313 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:19:07,315 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:19:07,317 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:19:07,318 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:19:07,320 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:19:07,328 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:19:07,331 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:19:07,332 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:19:07,333 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:19:07,334 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:19:07,346 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:19:07,346 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:19:07,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:19:07,354 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:19:07,355 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:19:07,356 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:19:07,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:19:07,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:19:07,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:19:07,363 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:19:07,364 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:19:07,365 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:19:07,366 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:19:07,366 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:19:07,366 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:19:07,367 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:19:07,368 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:19:07,369 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 02:19:07,413 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:19:07,413 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:19:07,415 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:19:07,415 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:19:07,415 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:19:07,416 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:19:07,416 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:19:07,416 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:19:07,417 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:19:07,417 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:19:07,418 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:19:07,418 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:19:07,418 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:19:07,419 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:19:07,419 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:19:07,419 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:19:07,419 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:19:07,420 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:19:07,420 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:19:07,420 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:19:07,420 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:19:07,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:07,421 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:19:07,421 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:19:07,421 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:19:07,421 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:19:07,422 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:19:07,422 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:19:07,422 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:19:07,422 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:19:07,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:19:07,909 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:19:07,916 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:19:07,919 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:19:07,919 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:19:07,920 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 02:19:08,021 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46bfaec2/16639c7d571c42969161d301bff79a58/FLAG4eb8bb94f [2020-09-25 02:19:08,574 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:08,575 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 02:19:08,583 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46bfaec2/16639c7d571c42969161d301bff79a58/FLAG4eb8bb94f [2020-09-25 02:19:08,904 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a46bfaec2/16639c7d571c42969161d301bff79a58 [2020-09-25 02:19:08,919 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:08,925 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:08,926 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:08,927 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:08,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:08,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:08" (1/1) ... [2020-09-25 02:19:08,936 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2016f310 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:08, skipping insertion in model container [2020-09-25 02:19:08,937 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:08" (1/1) ... [2020-09-25 02:19:08,946 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:08,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:09,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:09,209 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:09,242 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:09,264 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:09,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09 WrapperNode [2020-09-25 02:19:09,265 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:09,266 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:09,266 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:09,266 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:09,374 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (1/1) ... [2020-09-25 02:19:09,376 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (1/1) ... [2020-09-25 02:19:09,399 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (1/1) ... [2020-09-25 02:19:09,399 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (1/1) ... [2020-09-25 02:19:09,410 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (1/1) ... [2020-09-25 02:19:09,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (1/1) ... [2020-09-25 02:19:09,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (1/1) ... [2020-09-25 02:19:09,423 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:09,424 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:09,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:09,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:09,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (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 02:19:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:09,500 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:19:09,501 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:19:09,501 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 02:19:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 02:19:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:19:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:19:09,502 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:19:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:09,503 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:09,942 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:09,942 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 02:19:09,948 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:09 BoogieIcfgContainer [2020-09-25 02:19:09,948 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:09,950 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:09,950 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:09,954 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:09,954 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:08" (1/3) ... [2020-09-25 02:19:09,955 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b22558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:09, skipping insertion in model container [2020-09-25 02:19:09,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:09" (2/3) ... [2020-09-25 02:19:09,956 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25b22558 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:09, skipping insertion in model container [2020-09-25 02:19:09,956 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:09" (3/3) ... [2020-09-25 02:19:09,959 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-09-25 02:19:09,972 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:09,985 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:19:10,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:19:10,042 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:10,042 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:10,042 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:10,043 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:10,043 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:10,043 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:10,043 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:10,043 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:10,066 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-25 02:19:10,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 02:19:10,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:10,076 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:10,076 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:10,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:10,084 INFO L82 PathProgramCache]: Analyzing trace with hash -36140131, now seen corresponding path program 1 times [2020-09-25 02:19:10,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:10,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [854948859] [2020-09-25 02:19:10,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:10,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:10,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:10,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:10,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:10,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 02:19:10,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:19:10,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 666 [2020-09-25 02:19:10,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:10,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 02:19:10,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:10,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 02:19:11,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:11,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:11,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:11,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:11,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:11,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:11,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 02:19:11,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:11,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:11,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:11,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:11,063 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 02:19:11,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [854948859] [2020-09-25 02:19:11,068 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:11,068 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:19:11,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082822765] [2020-09-25 02:19:11,078 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:19:11,078 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:11,097 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:19:11,098 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:11,102 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-09-25 02:19:11,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:11,327 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-09-25 02:19:11,328 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:19:11,330 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-25 02:19:11,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:11,344 INFO L225 Difference]: With dead ends: 113 [2020-09-25 02:19:11,345 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 02:19:11,351 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 02:19:11,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 02:19:11,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-25 02:19:11,402 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 02:19:11,404 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-25 02:19:11,406 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 28 [2020-09-25 02:19:11,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:11,407 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-25 02:19:11,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:19:11,408 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-25 02:19:11,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 02:19:11,410 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:11,410 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:11,411 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:11,411 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:11,411 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:11,412 INFO L82 PathProgramCache]: Analyzing trace with hash 1098625525, now seen corresponding path program 1 times [2020-09-25 02:19:11,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:11,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1522534520] [2020-09-25 02:19:11,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:11,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:11,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:11,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:11,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:12,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:12,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 02:19:12,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 02:19:12,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-09-25 02:19:12,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 02:19:12,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 02:19:12,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 02:19:12,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:12,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:12,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:12,519 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:12,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 02:19:12,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:12,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 02:19:12,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:12,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:12,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:12,527 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 02:19:12,527 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1522534520] [2020-09-25 02:19:12,528 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:12,528 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 02:19:12,528 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2073578448] [2020-09-25 02:19:12,530 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 02:19:12,531 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:12,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 02:19:12,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 02:19:12,532 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 5 states. [2020-09-25 02:19:12,806 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:12,807 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-09-25 02:19:12,807 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 02:19:12,807 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 02:19:12,808 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:12,812 INFO L225 Difference]: With dead ends: 128 [2020-09-25 02:19:12,812 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 02:19:12,813 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:12,814 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 02:19:12,829 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-09-25 02:19:12,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 02:19:12,831 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 02:19:12,831 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 28 [2020-09-25 02:19:12,831 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:12,831 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 02:19:12,832 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 02:19:12,832 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 02:19:12,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 02:19:12,834 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:12,834 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:12,835 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:19:12,835 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:12,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:12,835 INFO L82 PathProgramCache]: Analyzing trace with hash -362895398, now seen corresponding path program 1 times [2020-09-25 02:19:12,836 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:12,836 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [952225310] [2020-09-25 02:19:12,836 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 02:19:12,891 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 02:19:12,891 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:19:12,897 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 02:19:12,923 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:12 BoogieIcfgContainer [2020-09-25 02:19:12,923 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:19:12,927 INFO L168 Benchmark]: Toolchain (without parser) took 4004.99 ms. Allocated memory was 148.4 MB in the beginning and 242.2 MB in the end (delta: 93.8 MB). Free memory was 103.8 MB in the beginning and 187.1 MB in the end (delta: -83.3 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:12,928 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:19:12,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 338.93 ms. Allocated memory is still 148.4 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:12,931 INFO L168 Benchmark]: Boogie Preprocessor took 157.83 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 183.4 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:12,932 INFO L168 Benchmark]: RCFGBuilder took 524.94 ms. Allocated memory is still 206.0 MB. Free memory was 183.4 MB in the beginning and 163.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:12,933 INFO L168 Benchmark]: TraceAbstraction took 2973.47 ms. Allocated memory was 206.0 MB in the beginning and 242.2 MB in the end (delta: 36.2 MB). Free memory was 163.0 MB in the beginning and 187.1 MB in the end (delta: -24.2 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:12,937 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 148.4 MB. Free memory was 121.7 MB in the beginning and 121.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 338.93 ms. Allocated memory is still 148.4 MB. Free memory was 103.1 MB in the beginning and 92.8 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 157.83 ms. Allocated memory was 148.4 MB in the beginning and 206.0 MB in the end (delta: 57.7 MB). Free memory was 92.8 MB in the beginning and 183.4 MB in the end (delta: -90.6 MB). Peak memory consumption was 9.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 524.94 ms. Allocated memory is still 206.0 MB. Free memory was 183.4 MB in the beginning and 163.6 MB in the end (delta: 19.8 MB). Peak memory consumption was 19.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2973.47 ms. Allocated memory was 206.0 MB in the beginning and 242.2 MB in the end (delta: 36.2 MB). Free memory was 163.0 MB in the beginning and 187.1 MB in the end (delta: -24.2 MB). Peak memory consumption was 12.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 6]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] unsigned int M = __VERIFIER_nondet_uint(); [L15] int A[M], B[M], C[M]; [L16] unsigned int i; [L18] i=0 [L18] COND TRUE i