/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/array-fpi/ifeqn2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:18:10,833 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:18:10,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:18:10,887 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:18:10,888 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:18:10,899 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:18:10,901 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:18:10,904 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:18:10,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:18:10,910 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:18:10,911 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:18:10,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:18:10,913 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:18:10,917 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:18:10,920 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:18:10,921 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:18:10,923 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:18:10,924 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:18:10,926 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:18:10,932 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:18:10,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:18:10,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:18:10,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:18:10,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:18:10,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:18:10,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:18:10,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:18:10,943 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:18:10,943 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:18:10,944 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:18:10,945 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:18:10,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:18:10,946 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:18:10,947 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:18:10,948 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:18:10,948 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:18:10,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:18:10,949 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:18:10,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:18:10,951 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:18:10,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:18:10,952 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 02:18:10,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:18:10,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:18:10,984 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:18:10,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:18:10,984 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:18:10,985 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:18:10,985 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:18:10,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:18:10,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:18:10,986 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:18:10,987 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:18:10,987 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:18:10,987 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:18:10,988 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:18:10,988 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:18:10,988 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:18:10,988 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:18:10,988 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:18:10,989 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:18:10,989 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:18:10,989 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:18:10,989 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:10,989 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:18:10,990 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:18:10,990 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:18:10,990 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:18:10,990 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:18:10,990 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:18:10,991 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:18:10,991 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 02:18:11,486 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:18:11,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:18:11,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:18:11,520 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:18:11,520 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:18:11,521 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-25 02:18:11,617 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f7de761/3768cc66837647b7b856ede8f4dea795/FLAGf983f97b2 [2020-09-25 02:18:12,167 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:18:12,167 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ifeqn2f.c [2020-09-25 02:18:12,176 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f7de761/3768cc66837647b7b856ede8f4dea795/FLAGf983f97b2 [2020-09-25 02:18:12,526 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/06f7de761/3768cc66837647b7b856ede8f4dea795 [2020-09-25 02:18:12,543 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:18:12,550 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:18:12,554 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:12,555 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:18:12,559 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:18:12,560 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:12,565 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2aa297b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12, skipping insertion in model container [2020-09-25 02:18:12,565 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:12,575 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:18:12,600 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:18:12,828 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:12,846 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:18:12,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:12,889 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:18:12,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12 WrapperNode [2020-09-25 02:18:12,890 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:12,890 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:18:12,891 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:18:12,891 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:18:12,985 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:12,986 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:12,995 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:12,996 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:13,004 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:13,011 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:13,013 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... [2020-09-25 02:18:13,018 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:18:13,018 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:18:13,019 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:18:13,019 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:18:13,020 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:18:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:18:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:18:13,095 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:18:13,096 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:18:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:18:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:18:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:18:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:18:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:18:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:18:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:18:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:18:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:18:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:18:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:18:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:18:13,464 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:13,464 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:18:13,470 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:13 BoogieIcfgContainer [2020-09-25 02:18:13,470 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:13,471 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:13,471 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:13,475 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:13,475 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:18:12" (1/3) ... [2020-09-25 02:18:13,476 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294c4338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:13, skipping insertion in model container [2020-09-25 02:18:13,476 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:12" (2/3) ... [2020-09-25 02:18:13,477 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@294c4338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:13, skipping insertion in model container [2020-09-25 02:18:13,477 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:13" (3/3) ... [2020-09-25 02:18:13,479 INFO L109 eAbstractionObserver]: Analyzing ICFG ifeqn2f.c [2020-09-25 02:18:13,491 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:13,502 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:13,521 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:13,548 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:13,549 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:13,549 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:13,549 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:13,549 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:13,549 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:13,549 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:13,549 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:13,573 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states. [2020-09-25 02:18:13,582 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 02:18:13,583 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:13,584 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] [2020-09-25 02:18:13,585 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:13,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:13,593 INFO L82 PathProgramCache]: Analyzing trace with hash 1150160147, now seen corresponding path program 1 times [2020-09-25 02:18:13,605 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:13,605 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [634972540] [2020-09-25 02:18:13,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:13,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:13,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:13,880 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [634972540] [2020-09-25 02:18:13,881 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-25 02:18:13,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:13,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-25 02:18:13,882 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-25 02:18:13,883 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:13,889 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:13,917 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 02:18:13,919 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:13 BoogieIcfgContainer [2020-09-25 02:18:13,919 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:13,925 INFO L168 Benchmark]: Toolchain (without parser) took 1376.15 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 105.9 MB in the beginning and 145.2 MB in the end (delta: -39.3 MB). Peak memory consumption was 22.0 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:13,927 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:13,929 INFO L168 Benchmark]: CACSL2BoogieTranslator took 335.85 ms. Allocated memory is still 143.7 MB. Free memory was 105.2 MB in the beginning and 94.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:13,931 INFO L168 Benchmark]: Boogie Preprocessor took 127.62 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 94.9 MB in the beginning and 183.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:13,932 INFO L168 Benchmark]: RCFGBuilder took 451.62 ms. Allocated memory is still 205.0 MB. Free memory was 183.0 MB in the beginning and 163.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:13,934 INFO L168 Benchmark]: TraceAbstraction took 447.92 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 145.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:13,945 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 143.7 MB. Free memory was 123.9 MB in the beginning and 123.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 335.85 ms. Allocated memory is still 143.7 MB. Free memory was 105.2 MB in the beginning and 94.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.62 ms. Allocated memory was 143.7 MB in the beginning and 205.0 MB in the end (delta: 61.3 MB). Free memory was 94.9 MB in the beginning and 183.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 451.62 ms. Allocated memory is still 205.0 MB. Free memory was 183.0 MB in the beginning and 163.3 MB in the end (delta: 19.7 MB). Peak memory consumption was 19.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 447.92 ms. Allocated memory is still 205.0 MB. Free memory was 162.7 MB in the beginning and 145.2 MB in the end (delta: 17.5 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible 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] long long *a = malloc(sizeof(long long)*N); [L27] long long *b = malloc(sizeof(long long)*N); [L29] i=0 [L29] COND FALSE !(i