/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/nsqmf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:18:24,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:18:24,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:18:24,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:18:24,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:18:24,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:18:24,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:18:24,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:18:24,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:18:24,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:18:24,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:18:24,431 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:18:24,431 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:18:24,434 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:18:24,436 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:18:24,438 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:18:24,440 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:18:24,441 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:18:24,442 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:18:24,452 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:18:24,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:18:24,456 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:18:24,457 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:18:24,458 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:18:24,461 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:18:24,461 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:18:24,461 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:18:24,465 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:18:24,465 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:18:24,467 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:18:24,468 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:18:24,469 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:18:24,469 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:18:24,470 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:18:24,472 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:18:24,472 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:18:24,473 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:18:24,473 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:18:24,473 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:18:24,474 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:18:24,476 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:18:24,478 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 02:18:24,528 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:18:24,529 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:18:24,531 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:18:24,531 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:18:24,532 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:18:24,532 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:18:24,532 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:18:24,533 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:18:24,533 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:18:24,533 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:18:24,534 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:18:24,534 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:18:24,534 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:18:24,535 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:18:24,535 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:18:24,535 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:18:24,536 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:18:24,536 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:18:24,536 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:18:24,536 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:18:24,537 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:18:24,537 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:18:24,537 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:18:24,537 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:18:24,537 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:18:24,538 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:18:24,538 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:18:24,538 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:18:24,538 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:18:24,538 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 02:18:25,047 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:18:25,074 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:18:25,078 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:18:25,081 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:18:25,081 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:18:25,083 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/nsqmf.c [2020-09-25 02:18:25,156 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df14b2fe1/d750341781c242a28ad3e85618c11c26/FLAG6829e8918 [2020-09-25 02:18:25,759 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:18:25,759 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/nsqmf.c [2020-09-25 02:18:25,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df14b2fe1/d750341781c242a28ad3e85618c11c26/FLAG6829e8918 [2020-09-25 02:18:26,011 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/df14b2fe1/d750341781c242a28ad3e85618c11c26 [2020-09-25 02:18:26,026 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:18:26,032 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:18:26,033 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:26,034 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:18:26,038 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:18:26,039 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,044 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244669af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26, skipping insertion in model container [2020-09-25 02:18:26,044 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,053 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:18:26,078 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:18:26,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:26,306 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:18:26,329 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:18:26,346 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:18:26,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26 WrapperNode [2020-09-25 02:18:26,346 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:18:26,347 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:18:26,347 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:18:26,348 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:18:26,445 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,446 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,456 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,456 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,465 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,476 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,477 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (1/1) ... [2020-09-25 02:18:26,480 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:18:26,481 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:18:26,481 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:18:26,481 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:18:26,482 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (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 02:18:26,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:18:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:18:26,562 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 02:18:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:18:26,563 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:18:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:18:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 02:18:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 02:18:26,563 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 02:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 02:18:26,564 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 02:18:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 02:18:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:18:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:18:26,565 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 02:18:26,927 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:18:26,927 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 02:18:26,933 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:26 BoogieIcfgContainer [2020-09-25 02:18:26,933 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:18:26,935 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:18:26,936 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:18:26,940 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:18:26,941 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:18:26" (1/3) ... [2020-09-25 02:18:26,943 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20895f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:26, skipping insertion in model container [2020-09-25 02:18:26,944 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:18:26" (2/3) ... [2020-09-25 02:18:26,945 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20895f59 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:18:26, skipping insertion in model container [2020-09-25 02:18:26,945 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:18:26" (3/3) ... [2020-09-25 02:18:26,948 INFO L109 eAbstractionObserver]: Analyzing ICFG nsqmf.c [2020-09-25 02:18:26,959 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:18:26,968 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:18:26,995 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:18:27,025 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:18:27,025 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:18:27,025 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:18:27,025 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:18:27,026 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:18:27,026 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:18:27,026 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:18:27,026 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:18:27,054 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states. [2020-09-25 02:18:27,061 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 02:18:27,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:18:27,063 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] [2020-09-25 02:18:27,063 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:18:27,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:18:27,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1558850377, now seen corresponding path program 1 times [2020-09-25 02:18:27,078 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:18:27,079 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1160541625] [2020-09-25 02:18:27,079 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:18:27,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:18:27,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:18:27,339 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1160541625] [2020-09-25 02:18:27,341 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-25 02:18:27,341 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:18:27,342 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-25 02:18:27,342 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-25 02:18:27,343 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 02:18:27,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:18:27,371 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-25 02:18:27,372 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:18:27 BoogieIcfgContainer [2020-09-25 02:18:27,372 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:18:27,376 INFO L168 Benchmark]: Toolchain (without parser) took 1346.54 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 104.5 MB in the beginning and 146.4 MB in the end (delta: -41.9 MB). Peak memory consumption was 20.5 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:27,377 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 142.6 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 02:18:27,378 INFO L168 Benchmark]: CACSL2BoogieTranslator took 313.50 ms. Allocated memory is still 142.6 MB. Free memory was 103.8 MB in the beginning and 93.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:27,379 INFO L168 Benchmark]: Boogie Preprocessor took 133.01 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 93.6 MB in the beginning and 182.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:27,381 INFO L168 Benchmark]: RCFGBuilder took 453.00 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 163.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:27,382 INFO L168 Benchmark]: TraceAbstraction took 436.83 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 146.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:18:27,386 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 142.6 MB. Free memory was 122.8 MB in the beginning and 122.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 313.50 ms. Allocated memory is still 142.6 MB. Free memory was 103.8 MB in the beginning and 93.6 MB in the end (delta: 10.2 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.01 ms. Allocated memory was 142.6 MB in the beginning and 205.0 MB in the end (delta: 62.4 MB). Free memory was 93.6 MB in the beginning and 182.6 MB in the end (delta: -89.0 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 453.00 ms. Allocated memory is still 205.0 MB. Free memory was 182.6 MB in the beginning and 163.7 MB in the end (delta: 18.8 MB). Peak memory consumption was 18.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 436.83 ms. Allocated memory is still 205.0 MB. Free memory was 163.1 MB in the beginning and 146.4 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 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] b[0] = 1 [L30] a[0] = 1 [L32] i=1 [L37] i=1 [L37] COND FALSE !(i