/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/condmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:33,830 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:33,835 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:33,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:33,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:33,876 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:33,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:33,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:33,890 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:33,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:33,895 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:33,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:33,899 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:33,902 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:33,903 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:33,907 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:33,909 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:33,910 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:33,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:33,918 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:33,924 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:33,925 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:33,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:33,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:33,935 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:33,936 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:33,936 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:33,942 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:33,942 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:33,945 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:33,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:33,947 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:33,948 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:33,949 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:33,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:33,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:33,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:33,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:33,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:33,954 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:33,955 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:33,956 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 [2020-09-24 22:54:34,013 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:34,014 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:34,017 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:34,017 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:34,017 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:34,017 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:34,018 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:34,018 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:34,018 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:34,019 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:34,020 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:34,020 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:34,021 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:34,021 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:34,021 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:34,022 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:34,022 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:34,022 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:34,022 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:34,022 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:34,023 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:34,023 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:34,023 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:34,024 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:34,024 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:34,024 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:34,025 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:34,025 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:34,025 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:34,025 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:34,515 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:34,541 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:34,545 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:34,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:34,550 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:34,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condmf.c [2020-09-24 22:54:34,646 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0c8a224/26aeec997e1d4319a6f5da9167a36c01/FLAGff5cdfa82 [2020-09-24 22:54:35,176 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:35,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condmf.c [2020-09-24 22:54:35,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0c8a224/26aeec997e1d4319a6f5da9167a36c01/FLAGff5cdfa82 [2020-09-24 22:54:35,523 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6e0c8a224/26aeec997e1d4319a6f5da9167a36c01 [2020-09-24 22:54:35,538 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:35,544 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:35,546 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:35,546 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:35,550 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:35,552 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,556 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73fa4179 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35, skipping insertion in model container [2020-09-24 22:54:35,556 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,566 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:35,592 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:35,819 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:35,833 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:35,856 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:35,879 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:35,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35 WrapperNode [2020-09-24 22:54:35,880 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:35,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:35,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:35,881 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:35,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,965 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:35,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:36,001 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:36,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (1/1) ... [2020-09-24 22:54:36,007 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:36,008 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:36,008 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:36,009 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:36,010 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (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 [2020-09-24 22:54:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 22:54:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 22:54:36,089 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 22:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 22:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 22:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 22:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 22:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:36,445 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:36,446 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 22:54:36,453 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:36 BoogieIcfgContainer [2020-09-24 22:54:36,454 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:36,456 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:36,456 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:36,460 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:36,460 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:35" (1/3) ... [2020-09-24 22:54:36,462 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128b47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:36, skipping insertion in model container [2020-09-24 22:54:36,462 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:35" (2/3) ... [2020-09-24 22:54:36,463 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@128b47b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:36, skipping insertion in model container [2020-09-24 22:54:36,463 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:36" (3/3) ... [2020-09-24 22:54:36,465 INFO L109 eAbstractionObserver]: Analyzing ICFG condmf.c [2020-09-24 22:54:36,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:36,485 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:36,505 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:36,532 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:36,532 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:36,532 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:36,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:36,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:36,533 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:36,533 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:36,533 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:36,556 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states. [2020-09-24 22:54:36,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-09-24 22:54:36,565 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:36,566 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] [2020-09-24 22:54:36,567 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:36,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:36,575 INFO L82 PathProgramCache]: Analyzing trace with hash 246632013, now seen corresponding path program 1 times [2020-09-24 22:54:36,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:36,587 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481000613] [2020-09-24 22:54:36,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:36,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:36,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:36,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 22:54:37,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:54:37,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-09-24 22:54:37,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:54:37,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-24 22:54:37,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 22:54:37,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:54:37,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:54:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:54:37,799 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:37,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:54:37,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:37,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:37,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:37,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 22:54:37,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:37,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:37,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:54:37,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 22:54:37,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:54:37,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:54:37,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:54:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:54:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:54:37,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:54:37,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:54:37,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:54:37,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [481000613] [2020-09-24 22:54:37,839 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:37,839 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-24 22:54:37,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1668350938] [2020-09-24 22:54:37,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:54:37,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:54:37,865 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:54:37,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:54:37,870 INFO L87 Difference]: Start difference. First operand 59 states. Second operand 6 states. [2020-09-24 22:54:38,319 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:54:38,319 INFO L93 Difference]: Finished difference Result 132 states and 161 transitions. [2020-09-24 22:54:38,320 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:54:38,321 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 31 [2020-09-24 22:54:38,322 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:54:38,335 INFO L225 Difference]: With dead ends: 132 [2020-09-24 22:54:38,335 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 22:54:38,340 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:54:38,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 22:54:38,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 54. [2020-09-24 22:54:38,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:54:38,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 57 transitions. [2020-09-24 22:54:38,401 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 57 transitions. Word has length 31 [2020-09-24 22:54:38,401 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:54:38,402 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 57 transitions. [2020-09-24 22:54:38,402 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:54:38,402 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 57 transitions. [2020-09-24 22:54:38,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-09-24 22:54:38,404 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:38,404 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] [2020-09-24 22:54:38,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:38,405 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:38,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:38,405 INFO L82 PathProgramCache]: Analyzing trace with hash -1554786686, now seen corresponding path program 1 times [2020-09-24 22:54:38,406 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:38,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602508663] [2020-09-24 22:54:38,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:38,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 22:54:38,437 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 22:54:38,438 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:54:38,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:54:38,466 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:54:38 BoogieIcfgContainer [2020-09-24 22:54:38,466 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:54:38,470 INFO L168 Benchmark]: Toolchain (without parser) took 2928.61 ms. Allocated memory was 141.0 MB in the beginning and 234.4 MB in the end (delta: 93.3 MB). Free memory was 104.5 MB in the beginning and 172.8 MB in the end (delta: -68.3 MB). Peak memory consumption was 25.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:38,471 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:54:38,472 INFO L168 Benchmark]: CACSL2BoogieTranslator took 334.88 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:38,473 INFO L168 Benchmark]: Boogie Preprocessor took 126.32 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 93.5 MB in the beginning and 180.9 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:38,474 INFO L168 Benchmark]: RCFGBuilder took 446.27 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 162.4 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:38,475 INFO L168 Benchmark]: TraceAbstraction took 2010.27 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 161.7 MB in the beginning and 172.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:38,480 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 141.0 MB. Free memory was 122.6 MB in the beginning and 122.4 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 334.88 ms. Allocated memory is still 141.0 MB. Free memory was 103.8 MB in the beginning and 93.5 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 126.32 ms. Allocated memory was 141.0 MB in the beginning and 202.9 MB in the end (delta: 61.9 MB). Free memory was 93.5 MB in the beginning and 180.9 MB in the end (delta: -87.4 MB). Peak memory consumption was 12.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 446.27 ms. Allocated memory is still 202.9 MB. Free memory was 180.9 MB in the beginning and 162.4 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2010.27 ms. Allocated memory was 202.9 MB in the beginning and 234.4 MB in the end (delta: 31.5 MB). Free memory was 161.7 MB in the beginning and 172.8 MB in the end (delta: -11.0 MB). Peak memory consumption was 20.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] int *a = malloc(sizeof(int)*N); [L28] i = 0 [L28] COND TRUE i < N [L30] a[i] = 0 [L28] i++ [L28] COND FALSE !(i < N) [L33] i = 0 [L33] COND TRUE i < N [L35] COND TRUE N%2 == 1 [L37] EXPR a[i] [L37] a[i] = a[i] + 2 [L33] i++ [L33] COND FALSE !(i < N) [L45] i = 0 [L45] COND TRUE i < N [L47] EXPR a[i] [L47] CALL __VERIFIER_assert(a[i] % 2 == N % 2) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.4s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 51 SDtfs, 52 SDslu, 77 SDs, 0 SdLazy, 170 SolverSat, 19 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=59occurred 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, 1 MinimizatonAttempts, 18 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 75 NumberOfCodeBlocks, 75 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 30 ConstructedInterpolants, 0 QuantifiedInterpolants, 1440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 PerfectInterpolantSequences, 0/0 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 incorrect! Received shutdown request...