/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:15:39,295 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:15:39,298 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:15:39,342 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:15:39,342 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:15:39,350 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:15:39,352 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:15:39,356 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:15:39,359 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:15:39,362 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:15:39,363 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:15:39,364 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:15:39,364 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:15:39,367 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:15:39,369 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:15:39,371 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:15:39,373 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:15:39,374 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:15:39,375 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:15:39,384 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:15:39,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:15:39,387 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:15:39,389 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:15:39,389 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:15:39,403 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:15:39,403 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:15:39,408 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:15:39,409 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:15:39,410 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:15:39,410 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:15:39,411 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:15:39,415 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:15:39,415 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:15:39,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:15:39,419 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:15:39,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:15:39,420 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:15:39,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:15:39,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:15:39,423 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:15:39,425 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:15:39,426 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 [2020-10-12 10:15:39,466 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:15:39,466 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:15:39,469 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:15:39,469 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:15:39,469 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:15:39,469 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:15:39,470 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:15:39,470 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:15:39,470 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:15:39,470 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:15:39,471 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:15:39,472 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:15:39,472 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:15:39,472 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:15:39,472 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:15:39,473 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:15:39,473 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:15:39,473 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:15:39,473 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:15:39,473 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:15:39,474 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:15:39,474 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:15:39,474 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:15:39,474 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:15:39,475 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:15:39,475 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:15:39,475 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:15:39,475 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:15:39,475 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:15:39,476 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:15:39,779 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:15:39,796 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:15:39,800 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:15:39,803 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:15:39,804 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:15:39,804 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina4f.c [2020-10-12 10:15:39,872 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8323718ee/5c1e8f75e2b045c0852c0395dc1c97fc/FLAG86b769dd6 [2020-10-12 10:15:40,312 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:15:40,313 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina4f.c [2020-10-12 10:15:40,323 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8323718ee/5c1e8f75e2b045c0852c0395dc1c97fc/FLAG86b769dd6 [2020-10-12 10:15:40,691 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8323718ee/5c1e8f75e2b045c0852c0395dc1c97fc [2020-10-12 10:15:40,701 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:15:40,703 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:15:40,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:15:40,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:15:40,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:15:40,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:15:40" (1/1) ... [2020-10-12 10:15:40,715 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2b33d7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:40, skipping insertion in model container [2020-10-12 10:15:40,715 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:15:40" (1/1) ... [2020-10-12 10:15:40,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:15:40,743 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:15:41,012 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:15:41,023 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:15:41,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:15:41,146 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:15:41,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41 WrapperNode [2020-10-12 10:15:41,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:15:41,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:15:41,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:15:41,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:15:41,162 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (1/1) ... [2020-10-12 10:15:41,162 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (1/1) ... [2020-10-12 10:15:41,177 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (1/1) ... [2020-10-12 10:15:41,178 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (1/1) ... [2020-10-12 10:15:41,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (1/1) ... [2020-10-12 10:15:41,209 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (1/1) ... [2020-10-12 10:15:41,211 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (1/1) ... [2020-10-12 10:15:41,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:15:41,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:15:41,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:15:41,215 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:15:41,216 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (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 [2020-10-12 10:15:41,283 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:15:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:15:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:15:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:15:41,284 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:15:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:15:41,284 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:15:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:15:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:15:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:15:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:15:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:15:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:15:41,285 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:15:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:15:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:15:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:15:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:15:41,286 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:15:41,573 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:15:41,574 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-12 10:15:41,580 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:15:41 BoogieIcfgContainer [2020-10-12 10:15:41,580 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:15:41,582 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:15:41,582 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:15:41,585 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:15:41,586 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:15:40" (1/3) ... [2020-10-12 10:15:41,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9560a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:15:41, skipping insertion in model container [2020-10-12 10:15:41,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:15:41" (2/3) ... [2020-10-12 10:15:41,587 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b9560a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:15:41, skipping insertion in model container [2020-10-12 10:15:41,587 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:15:41" (3/3) ... [2020-10-12 10:15:41,589 INFO L109 eAbstractionObserver]: Analyzing ICFG sina4f.c [2020-10-12 10:15:41,603 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:15:41,613 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:15:41,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:15:41,660 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:15:41,661 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:15:41,661 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:15:41,661 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:15:41,662 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:15:41,662 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:15:41,662 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:15:41,662 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:15:41,685 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-12 10:15:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 10:15:41,693 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:15:41,694 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] [2020-10-12 10:15:41,694 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:15:41,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:15:41,702 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-10-12 10:15:41,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:15:41,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1238393826] [2020-10-12 10:15:41,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:15:41,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:15:41,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:41,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:41,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:42,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:42,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:42,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:42,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:42,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:43,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:15:43,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-12 10:15:43,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-12 10:15:43,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1378 [2020-10-12 10:15:43,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:15:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 10:15:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-10-12 10:15:43,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:15:43,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 10:15:43,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:15:43,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:15:43,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:43,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:15:43,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:15:43,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:15:43,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-12 10:15:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:15:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:15:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:15:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:15:43,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:15:43,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 10:15:43,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:15:43,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:43,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:15:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:15:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:15:43,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:15:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:15:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:15:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:15:43,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:15:43,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:15:43,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:15:43,402 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:15:43,404 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1238393826] [2020-10-12 10:15:43,406 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:15:43,406 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:15:43,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132995647] [2020-10-12 10:15:43,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:15:43,414 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:15:43,431 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:15:43,433 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:15:43,435 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 6 states. [2020-10-12 10:15:43,785 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:15:43,786 INFO L93 Difference]: Finished difference Result 103 states and 145 transitions. [2020-10-12 10:15:43,787 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-12 10:15:43,790 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-12 10:15:43,790 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:15:43,810 INFO L225 Difference]: With dead ends: 103 [2020-10-12 10:15:43,810 INFO L226 Difference]: Without dead ends: 47 [2020-10-12 10:15:43,823 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:15:43,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-12 10:15:43,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-10-12 10:15:43,925 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-12 10:15:43,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-10-12 10:15:43,934 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-10-12 10:15:43,935 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:15:43,935 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-10-12 10:15:43,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:15:43,936 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-10-12 10:15:43,939 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-12 10:15:43,939 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:15:43,940 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] [2020-10-12 10:15:43,940 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:15:43,941 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:15:43,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:15:43,941 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-10-12 10:15:43,942 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:15:43,942 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [677703945] [2020-10-12 10:15:43,942 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:15:43,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:15:43,979 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:15:43,980 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:15:43,985 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:15:44,007 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:15:44 BoogieIcfgContainer [2020-10-12 10:15:44,007 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:15:44,011 INFO L168 Benchmark]: Toolchain (without parser) took 3306.44 ms. Allocated memory was 138.9 MB in the beginning and 234.9 MB in the end (delta: 95.9 MB). Free memory was 102.0 MB in the beginning and 102.8 MB in the end (delta: -772.0 kB). Peak memory consumption was 95.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:15:44,012 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:15:44,013 INFO L168 Benchmark]: CACSL2BoogieTranslator took 441.60 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 180.9 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:15:44,014 INFO L168 Benchmark]: Boogie Preprocessor took 66.13 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 178.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:15:44,015 INFO L168 Benchmark]: RCFGBuilder took 366.14 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 159.3 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:15:44,017 INFO L168 Benchmark]: TraceAbstraction took 2425.26 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 158.7 MB in the beginning and 102.8 MB in the end (delta: 55.9 MB). Peak memory consumption was 88.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:15:44,021 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 441.60 ms. Allocated memory was 138.9 MB in the beginning and 202.4 MB in the end (delta: 63.4 MB). Free memory was 101.8 MB in the beginning and 180.9 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 66.13 ms. Allocated memory is still 202.4 MB. Free memory was 180.9 MB in the beginning and 178.5 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.14 ms. Allocated memory is still 202.4 MB. Free memory was 178.5 MB in the beginning and 159.3 MB in the end (delta: 19.1 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2425.26 ms. Allocated memory was 202.4 MB in the beginning and 234.9 MB in the end (delta: 32.5 MB). Free memory was 158.7 MB in the beginning and 102.8 MB in the end (delta: 55.9 MB). Peak memory consumption was 88.4 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] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L28] long long *b = malloc(sizeof(long long)*N); [L30] sum[0] = 0 [L31] i=0 [L31] COND TRUE i