/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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=SHALLOWEST --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 language data_model -i ../../../trunk/examples/svcomp/array-fpi/s32iff.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 19:41:20,264 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 19:41:20,268 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 19:41:20,324 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 19:41:20,325 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 19:41:20,332 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 19:41:20,334 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 19:41:20,339 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 19:41:20,342 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 19:41:20,350 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 19:41:20,352 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 19:41:20,353 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 19:41:20,354 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 19:41:20,357 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 19:41:20,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 19:41:20,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 19:41:20,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 19:41:20,367 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 19:41:20,376 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 19:41:20,389 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 19:41:20,391 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 19:41:20,392 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 19:41:20,394 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 19:41:20,395 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 19:41:20,398 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 19:41:20,398 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 19:41:20,399 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 19:41:20,400 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 19:41:20,400 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 19:41:20,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 19:41:20,410 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 19:41:20,411 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 19:41:20,417 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 19:41:20,418 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 19:41:20,420 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 19:41:20,420 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 19:41:20,421 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 19:41:20,421 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 19:41:20,421 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 19:41:20,422 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 19:41:20,423 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 19:41:20,437 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 [2020-10-26 19:41:20,485 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 19:41:20,485 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 19:41:20,489 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 19:41:20,490 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 19:41:20,490 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 19:41:20,490 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 19:41:20,490 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 19:41:20,491 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 19:41:20,491 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 19:41:20,491 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 19:41:20,492 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 19:41:20,492 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 19:41:20,493 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 19:41:20,493 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 19:41:20,493 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 19:41:20,493 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 19:41:20,493 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 19:41:20,494 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 19:41:20,494 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 19:41:20,494 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 19:41:20,494 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 19:41:20,495 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 19:41:20,495 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 19:41:20,495 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 19:41:20,495 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 19:41:20,495 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 19:41:20,496 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 19:41:20,496 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 19:41:20,496 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 19:41:20,496 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 19:41:20,947 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 19:41:20,981 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 19:41:20,985 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 19:41:20,986 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 19:41:20,987 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 19:41:20,988 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/s32iff.c [2020-10-26 19:41:21,069 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b5ce17a/71bd6f68c7bb465da8838be3b12eca6b/FLAG3aa215f9b [2020-10-26 19:41:21,695 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 19:41:21,696 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/s32iff.c [2020-10-26 19:41:21,704 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b5ce17a/71bd6f68c7bb465da8838be3b12eca6b/FLAG3aa215f9b [2020-10-26 19:41:21,997 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e6b5ce17a/71bd6f68c7bb465da8838be3b12eca6b [2020-10-26 19:41:22,000 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 19:41:22,006 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 19:41:22,008 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 19:41:22,008 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 19:41:22,012 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 19:41:22,013 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:41:21" (1/1) ... [2020-10-26 19:41:22,016 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ca0bb4c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22, skipping insertion in model container [2020-10-26 19:41:22,016 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 07:41:21" (1/1) ... [2020-10-26 19:41:22,024 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 19:41:22,040 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 19:41:22,204 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:41:22,213 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 19:41:22,238 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 19:41:22,257 INFO L208 MainTranslator]: Completed translation [2020-10-26 19:41:22,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22 WrapperNode [2020-10-26 19:41:22,258 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 19:41:22,259 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 19:41:22,259 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 19:41:22,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 19:41:22,272 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (1/1) ... [2020-10-26 19:41:22,272 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (1/1) ... [2020-10-26 19:41:22,280 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (1/1) ... [2020-10-26 19:41:22,281 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (1/1) ... [2020-10-26 19:41:22,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (1/1) ... [2020-10-26 19:41:22,320 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (1/1) ... [2020-10-26 19:41:22,322 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (1/1) ... [2020-10-26 19:41:22,325 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 19:41:22,326 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 19:41:22,326 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 19:41:22,327 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 19:41:22,327 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (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 [2020-10-26 19:41:22,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 19:41:22,432 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 19:41:22,433 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 19:41:22,433 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-26 19:41:22,433 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-26 19:41:22,433 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 19:41:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 19:41:22,433 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 19:41:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 19:41:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 19:41:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-26 19:41:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-26 19:41:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 19:41:22,434 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-26 19:41:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 19:41:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-26 19:41:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 19:41:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 19:41:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 19:41:22,435 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 19:41:22,436 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 19:41:22,436 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 19:41:22,795 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 19:41:22,795 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-26 19:41:22,797 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:41:22 BoogieIcfgContainer [2020-10-26 19:41:22,797 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 19:41:22,800 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 19:41:22,800 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 19:41:22,804 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 19:41:22,805 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 07:41:21" (1/3) ... [2020-10-26 19:41:22,806 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d66239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:41:22, skipping insertion in model container [2020-10-26 19:41:22,806 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 07:41:22" (2/3) ... [2020-10-26 19:41:22,807 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@25d66239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 07:41:22, skipping insertion in model container [2020-10-26 19:41:22,807 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 07:41:22" (3/3) ... [2020-10-26 19:41:22,809 INFO L111 eAbstractionObserver]: Analyzing ICFG s32iff.c [2020-10-26 19:41:22,842 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 19:41:22,858 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 19:41:22,894 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 19:41:22,931 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 19:41:22,932 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 19:41:22,932 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 19:41:22,932 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 19:41:22,932 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 19:41:22,933 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 19:41:22,933 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 19:41:22,933 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 19:41:22,956 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-10-26 19:41:22,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-10-26 19:41:22,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:41:22,972 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] [2020-10-26 19:41:22,973 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:41:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:41:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash 1702539242, now seen corresponding path program 1 times [2020-10-26 19:41:23,002 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:41:23,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1905687211] [2020-10-26 19:41:23,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:41:23,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:41:23,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:41:23,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:41:23,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:41:23,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:41:23,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:41:23,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-10-26 19:41:23,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 19:41:23,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 586 [2020-10-26 19:41:23,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:41:23,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-26 19:41:23,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-26 19:41:23,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-26 19:41:23,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 19:41:24,005 WARN L193 SmtUtils]: Spent 125.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-26 19:41:24,007 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 19:41:24,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:41:24,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:41:24,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:41:24,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 19:41:24,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 19:41:24,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 19:41:24,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:41:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 19:41:24,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:41:24,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 19:41:24,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:41:24,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-26 19:41:24,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 19:41:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:41:24,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 19:41:24,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 19:41:24,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-26 19:41:24,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 19:41:24,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-26 19:41:24,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 19:41:24,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 19:41:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 19:41:24,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-26 19:41:24,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 19:41:24,052 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 19:41:24,053 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1905687211] [2020-10-26 19:41:24,056 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 19:41:24,056 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-26 19:41:24,057 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1223676413] [2020-10-26 19:41:24,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-26 19:41:24,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 19:41:24,077 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-26 19:41:24,079 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-26 19:41:24,081 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 5 states. [2020-10-26 19:41:24,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 19:41:24,374 INFO L93 Difference]: Finished difference Result 79 states and 106 transitions. [2020-10-26 19:41:24,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-26 19:41:24,376 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 24 [2020-10-26 19:41:24,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 19:41:24,385 INFO L225 Difference]: With dead ends: 79 [2020-10-26 19:41:24,385 INFO L226 Difference]: Without dead ends: 38 [2020-10-26 19:41:24,389 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-26 19:41:24,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-26 19:41:24,432 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 33. [2020-10-26 19:41:24,434 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-26 19:41:24,435 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 37 transitions. [2020-10-26 19:41:24,437 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 37 transitions. Word has length 24 [2020-10-26 19:41:24,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 19:41:24,438 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 37 transitions. [2020-10-26 19:41:24,438 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-26 19:41:24,439 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 37 transitions. [2020-10-26 19:41:24,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-26 19:41:24,440 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 19:41:24,440 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] [2020-10-26 19:41:24,441 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 19:41:24,441 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 19:41:24,442 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 19:41:24,442 INFO L82 PathProgramCache]: Analyzing trace with hash -856996485, now seen corresponding path program 1 times [2020-10-26 19:41:24,442 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 19:41:24,442 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796315676] [2020-10-26 19:41:24,443 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 19:41:24,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-26 19:41:24,483 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-26 19:41:24,483 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-26 19:41:24,489 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 19:41:24,509 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 26.10 07:41:24 BoogieIcfgContainer [2020-10-26 19:41:24,509 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-26 19:41:24,511 INFO L168 Benchmark]: Toolchain (without parser) took 2509.41 ms. Allocated memory is still 151.0 MB. Free memory was 132.5 MB in the beginning and 92.4 MB in the end (delta: 40.0 MB). Peak memory consumption was 38.6 MB. Max. memory is 8.0 GB. [2020-10-26 19:41:24,512 INFO L168 Benchmark]: CDTParser took 0.74 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.2 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-26 19:41:24,513 INFO L168 Benchmark]: CACSL2BoogieTranslator took 250.83 ms. Allocated memory is still 151.0 MB. Free memory was 131.8 MB in the beginning and 121.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. [2020-10-26 19:41:24,514 INFO L168 Benchmark]: Boogie Preprocessor took 66.03 ms. Allocated memory is still 151.0 MB. Free memory was 121.8 MB in the beginning and 134.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-26 19:41:24,515 INFO L168 Benchmark]: RCFGBuilder took 471.38 ms. Allocated memory is still 151.0 MB. Free memory was 134.9 MB in the beginning and 116.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. [2020-10-26 19:41:24,516 INFO L168 Benchmark]: TraceAbstraction took 1709.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 92.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. [2020-10-26 19:41:24,520 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.74 ms. Allocated memory is still 151.0 MB. Free memory was 123.2 MB in the beginning and 123.2 MB in the end (delta: 77.3 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 250.83 ms. Allocated memory is still 151.0 MB. Free memory was 131.8 MB in the beginning and 121.8 MB in the end (delta: 10.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 66.03 ms. Allocated memory is still 151.0 MB. Free memory was 121.8 MB in the beginning and 134.9 MB in the end (delta: -13.1 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 471.38 ms. Allocated memory is still 151.0 MB. Free memory was 134.9 MB in the beginning and 116.7 MB in the end (delta: 18.2 MB). Peak memory consumption was 18.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1709.33 ms. Allocated memory is still 151.0 MB. Free memory was 116.4 MB in the beginning and 92.4 MB in the end (delta: 23.9 MB). Peak memory consumption was 24.0 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 10]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L19] int N; [L23] N = __VERIFIER_nondet_int() [L24] COND FALSE !(N <= 0) [L25] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L13] COND FALSE !(!cond) [L25] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L27] int i; [L28] long long sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] sum[0] = 1 [L32] i=0 [L32] COND TRUE i