/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/sum_array-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 01:09:46,822 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 01:09:46,826 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 01:09:46,853 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 01:09:46,854 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 01:09:46,855 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 01:09:46,857 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 01:09:46,859 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 01:09:46,861 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 01:09:46,863 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 01:09:46,864 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 01:09:46,865 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 01:09:46,865 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 01:09:46,867 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 01:09:46,871 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 01:09:46,876 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 01:09:46,877 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 01:09:46,878 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 01:09:46,882 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 01:09:46,884 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 01:09:46,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 01:09:46,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 01:09:46,894 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 01:09:46,896 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 01:09:46,903 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 01:09:46,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 01:09:46,904 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 01:09:46,905 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 01:09:46,905 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 01:09:46,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 01:09:46,910 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 01:09:46,911 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 01:09:46,912 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 01:09:46,913 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 01:09:46,914 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 01:09:46,915 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 01:09:46,916 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 01:09:46,916 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 01:09:46,916 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 01:09:46,927 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 01:09:46,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 01:09:46,928 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 01:09:46,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 01:09:46,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 01:09:46,982 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 01:09:46,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 01:09:46,983 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 01:09:46,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 01:09:46,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 01:09:46,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 01:09:46,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 01:09:46,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 01:09:46,986 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 01:09:46,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 01:09:46,986 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 01:09:46,987 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 01:09:46,987 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 01:09:46,987 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 01:09:46,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 01:09:46,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 01:09:46,988 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 01:09:46,988 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 01:09:46,988 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 01:09:46,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:09:46,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 01:09:46,989 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 01:09:46,989 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 01:09:46,989 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 01:09:46,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 01:09:46,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 01:09:46,990 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 01:09:46,990 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true; [2020-09-25 01:09:47,504 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 01:09:47,526 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 01:09:47,531 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 01:09:47,533 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 01:09:47,534 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 01:09:47,535 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 01:09:47,633 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d61eadba/a53b6f2ab84e452f93fd4851b1b3f7db/FLAG11909c005 [2020-09-25 01:09:48,220 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 01:09:48,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/sum_array-1.c [2020-09-25 01:09:48,229 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d61eadba/a53b6f2ab84e452f93fd4851b1b3f7db/FLAG11909c005 [2020-09-25 01:09:48,583 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d61eadba/a53b6f2ab84e452f93fd4851b1b3f7db [2020-09-25 01:09:48,601 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 01:09:48,607 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 01:09:48,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:48,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 01:09:48,615 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 01:09:48,616 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:48" (1/1) ... [2020-09-25 01:09:48,622 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6643fb7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:48, skipping insertion in model container [2020-09-25 01:09:48,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:09:48" (1/1) ... [2020-09-25 01:09:48,632 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 01:09:48,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 01:09:48,936 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:48,944 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 01:09:48,992 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 01:09:49,020 INFO L208 MainTranslator]: Completed translation [2020-09-25 01:09:49,022 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49 WrapperNode [2020-09-25 01:09:49,022 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 01:09:49,023 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 01:09:49,023 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 01:09:49,024 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 01:09:49,122 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... [2020-09-25 01:09:49,122 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... [2020-09-25 01:09:49,147 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... [2020-09-25 01:09:49,150 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... [2020-09-25 01:09:49,170 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... [2020-09-25 01:09:49,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... [2020-09-25 01:09:49,185 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... [2020-09-25 01:09:49,188 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 01:09:49,189 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 01:09:49,189 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 01:09:49,189 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 01:09:49,190 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 01:09:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 01:09:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 01:09:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 01:09:49,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 01:09:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 01:09:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 01:09:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 01:09:49,267 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 01:09:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 01:09:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 01:09:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 01:09:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 01:09:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 01:09:49,268 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 01:09:49,269 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 01:09:49,741 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 01:09:49,742 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-25 01:09:49,747 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:49 BoogieIcfgContainer [2020-09-25 01:09:49,748 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 01:09:49,749 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 01:09:49,749 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 01:09:49,753 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 01:09:49,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:09:48" (1/3) ... [2020-09-25 01:09:49,754 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7204e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:49, skipping insertion in model container [2020-09-25 01:09:49,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:09:49" (2/3) ... [2020-09-25 01:09:49,755 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7204e752 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:09:49, skipping insertion in model container [2020-09-25 01:09:49,755 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:09:49" (3/3) ... [2020-09-25 01:09:49,758 INFO L109 eAbstractionObserver]: Analyzing ICFG sum_array-1.c [2020-09-25 01:09:49,774 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 01:09:49,795 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 01:09:49,823 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 01:09:49,856 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 01:09:49,857 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 01:09:49,857 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 01:09:49,857 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 01:09:49,857 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 01:09:49,857 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 01:09:49,858 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 01:09:49,858 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 01:09:49,890 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-09-25 01:09:49,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 01:09:49,900 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:49,901 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 01:09:49,902 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:49,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:49,910 INFO L82 PathProgramCache]: Analyzing trace with hash -36140131, now seen corresponding path program 1 times [2020-09-25 01:09:49,920 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:49,921 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [712512081] [2020-09-25 01:09:49,922 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:50,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:50,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:50,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:09:50,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:09:50,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 658 [2020-09-25 01:09:50,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 01:09:50,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:50,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 01:09:50,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:50,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:50,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:50,867 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:50,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:50,868 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:50,868 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 01:09:50,868 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:50,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:50,869 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:50,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:50,886 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:50,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [712512081] [2020-09-25 01:09:50,891 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:50,892 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 01:09:50,893 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [134073917] [2020-09-25 01:09:50,901 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 01:09:50,901 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:50,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 01:09:50,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 01:09:50,923 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-09-25 01:09:51,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:51,172 INFO L93 Difference]: Finished difference Result 113 states and 128 transitions. [2020-09-25 01:09:51,173 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 01:09:51,175 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-09-25 01:09:51,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:51,187 INFO L225 Difference]: With dead ends: 113 [2020-09-25 01:09:51,188 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 01:09:51,193 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 01:09:51,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 01:09:51,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-25 01:09:51,248 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 01:09:51,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2020-09-25 01:09:51,252 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 28 [2020-09-25 01:09:51,253 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:51,253 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2020-09-25 01:09:51,253 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 01:09:51,253 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2020-09-25 01:09:51,255 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 01:09:51,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:51,255 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 01:09:51,256 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 01:09:51,256 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:51,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:51,257 INFO L82 PathProgramCache]: Analyzing trace with hash 1098625525, now seen corresponding path program 1 times [2020-09-25 01:09:51,257 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:51,257 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1471817295] [2020-09-25 01:09:51,258 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:51,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:51,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:52,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:52,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 01:09:52,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 01:09:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1092 [2020-09-25 01:09:52,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 01:09:52,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 01:09:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 01:09:52,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:52,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 01:09:52,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 01:09:52,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 01:09:52,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 01:09:52,470 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 01:09:52,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 01:09:52,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 01:09:52,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-09-25 01:09:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 01:09:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 01:09:52,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 01:09:52,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 01:09:52,477 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 01:09:52,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1471817295] [2020-09-25 01:09:52,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 01:09:52,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 01:09:52,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120461054] [2020-09-25 01:09:52,481 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 01:09:52,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 01:09:52,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 01:09:52,482 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 01:09:52,482 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand 5 states. [2020-09-25 01:09:52,782 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 01:09:52,782 INFO L93 Difference]: Finished difference Result 128 states and 139 transitions. [2020-09-25 01:09:52,783 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 01:09:52,783 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 01:09:52,783 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 01:09:52,787 INFO L225 Difference]: With dead ends: 128 [2020-09-25 01:09:52,787 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 01:09:52,789 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 01:09:52,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 01:09:52,804 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 60. [2020-09-25 01:09:52,804 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-25 01:09:52,805 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 63 transitions. [2020-09-25 01:09:52,806 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 63 transitions. Word has length 28 [2020-09-25 01:09:52,806 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 01:09:52,806 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 63 transitions. [2020-09-25 01:09:52,806 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 01:09:52,806 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 63 transitions. [2020-09-25 01:09:52,808 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 01:09:52,808 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 01:09:52,808 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 01:09:52,809 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 01:09:52,809 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 01:09:52,809 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 01:09:52,809 INFO L82 PathProgramCache]: Analyzing trace with hash -362895398, now seen corresponding path program 1 times [2020-09-25 01:09:52,810 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 01:09:52,810 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [741326951] [2020-09-25 01:09:52,810 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 01:09:52,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 01:09:52,861 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 01:09:52,862 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 01:09:52,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 01:09:52,890 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 01:09:52 BoogieIcfgContainer [2020-09-25 01:09:52,890 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 01:09:52,894 INFO L168 Benchmark]: Toolchain (without parser) took 4289.66 ms. Allocated memory was 138.4 MB in the beginning and 250.6 MB in the end (delta: 112.2 MB). Free memory was 101.7 MB in the beginning and 208.1 MB in the end (delta: -106.4 MB). Peak memory consumption was 5.8 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:52,895 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 01:09:52,896 INFO L168 Benchmark]: CACSL2BoogieTranslator took 412.43 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 90.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:52,897 INFO L168 Benchmark]: Boogie Preprocessor took 165.00 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 90.7 MB in the beginning and 176.5 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:52,898 INFO L168 Benchmark]: RCFGBuilder took 559.30 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 156.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-25 01:09:52,899 INFO L168 Benchmark]: TraceAbstraction took 3141.22 ms. Allocated memory was 199.2 MB in the beginning and 250.6 MB in the end (delta: 51.4 MB). Free memory was 155.3 MB in the beginning and 208.1 MB in the end (delta: -52.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 01:09:52,903 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 412.43 ms. Allocated memory is still 138.4 MB. Free memory was 101.0 MB in the beginning and 90.7 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 165.00 ms. Allocated memory was 138.4 MB in the beginning and 199.2 MB in the end (delta: 60.8 MB). Free memory was 90.7 MB in the beginning and 176.5 MB in the end (delta: -85.7 MB). Peak memory consumption was 12.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 559.30 ms. Allocated memory is still 199.2 MB. Free memory was 176.5 MB in the beginning and 156.0 MB in the end (delta: 20.4 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3141.22 ms. Allocated memory was 199.2 MB in the beginning and 250.6 MB in the end (delta: 51.4 MB). Free memory was 155.3 MB in the beginning and 208.1 MB in the end (delta: -52.7 MB). There was no memory consumed. 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