/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=DEEPEST --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/ms2f.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 14:38:57,091 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 14:38:57,096 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 14:38:57,161 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 14:38:57,161 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 14:38:57,168 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 14:38:57,171 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 14:38:57,176 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 14:38:57,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 14:38:57,187 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 14:38:57,189 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 14:38:57,190 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 14:38:57,191 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 14:38:57,195 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 14:38:57,197 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 14:38:57,200 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 14:38:57,201 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 14:38:57,205 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 14:38:57,213 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 14:38:57,221 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 14:38:57,223 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 14:38:57,225 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 14:38:57,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 14:38:57,231 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 14:38:57,241 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 14:38:57,265 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 14:38:57,266 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 14:38:57,268 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 14:38:57,269 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 14:38:57,270 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 14:38:57,270 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 14:38:57,271 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 14:38:57,276 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 14:38:57,277 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 14:38:57,279 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 14:38:57,279 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 14:38:57,280 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 14:38:57,281 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 14:38:57,281 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 14:38:57,282 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 14:38:57,283 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 14:38:57,293 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 [2020-10-27 14:38:57,345 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 14:38:57,346 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 14:38:57,351 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 14:38:57,351 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 14:38:57,351 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 14:38:57,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 14:38:57,352 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 14:38:57,352 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 14:38:57,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 14:38:57,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 14:38:57,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 14:38:57,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 14:38:57,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 14:38:57,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 14:38:57,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 14:38:57,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 14:38:57,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 14:38:57,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 14:38:57,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 14:38:57,357 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 14:38:57,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 14:38:57,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 14:38:57,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 14:38:57,358 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 14:38:57,358 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 14:38:57,358 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 14:38:57,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 14:38:57,359 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 14:38:57,359 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 14:38:57,359 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 14:38:57,807 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 14:38:57,834 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 14:38:57,838 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 14:38:57,839 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 14:38:57,840 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 14:38:57,841 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms2f.c [2020-10-27 14:38:57,926 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43b040cae/0c6a9b8b290640f9bffe43fde976a1b6/FLAG6793134cd [2020-10-27 14:38:58,515 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 14:38:58,516 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms2f.c [2020-10-27 14:38:58,524 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43b040cae/0c6a9b8b290640f9bffe43fde976a1b6/FLAG6793134cd [2020-10-27 14:38:58,903 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/43b040cae/0c6a9b8b290640f9bffe43fde976a1b6 [2020-10-27 14:38:58,907 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 14:38:58,917 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 14:38:58,923 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 14:38:58,923 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 14:38:58,929 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 14:38:58,930 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:58" (1/1) ... [2020-10-27 14:38:58,942 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@382c975c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:58, skipping insertion in model container [2020-10-27 14:38:58,943 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 02:38:58" (1/1) ... [2020-10-27 14:38:58,953 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 14:38:58,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 14:38:59,240 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:38:59,253 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 14:38:59,295 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 14:38:59,317 INFO L208 MainTranslator]: Completed translation [2020-10-27 14:38:59,319 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59 WrapperNode [2020-10-27 14:38:59,319 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 14:38:59,320 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 14:38:59,320 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 14:38:59,321 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 14:38:59,335 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (1/1) ... [2020-10-27 14:38:59,337 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (1/1) ... [2020-10-27 14:38:59,361 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (1/1) ... [2020-10-27 14:38:59,361 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (1/1) ... [2020-10-27 14:38:59,381 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (1/1) ... [2020-10-27 14:38:59,389 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (1/1) ... [2020-10-27 14:38:59,392 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (1/1) ... [2020-10-27 14:38:59,399 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 14:38:59,401 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 14:38:59,401 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 14:38:59,402 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 14:38:59,403 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (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 [2020-10-27 14:38:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 14:38:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 14:38:59,472 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 14:38:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-27 14:38:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-27 14:38:59,473 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 14:38:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 14:38:59,473 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 14:38:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 14:38:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 14:38:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-27 14:38:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-27 14:38:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 14:38:59,474 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 14:38:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 14:38:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 14:38:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 14:38:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 14:38:59,475 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 14:38:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 14:38:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 14:38:59,476 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 14:38:59,806 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 14:38:59,807 INFO L298 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-27 14:38:59,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:59 BoogieIcfgContainer [2020-10-27 14:38:59,809 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 14:38:59,811 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 14:38:59,811 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 14:38:59,815 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 14:38:59,815 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 02:38:58" (1/3) ... [2020-10-27 14:38:59,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38797ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:59, skipping insertion in model container [2020-10-27 14:38:59,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 02:38:59" (2/3) ... [2020-10-27 14:38:59,816 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@38797ef8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 02:38:59, skipping insertion in model container [2020-10-27 14:38:59,816 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 02:38:59" (3/3) ... [2020-10-27 14:38:59,818 INFO L111 eAbstractionObserver]: Analyzing ICFG ms2f.c [2020-10-27 14:38:59,830 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 14:38:59,835 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 14:38:59,850 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 14:38:59,878 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 14:38:59,878 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 14:38:59,878 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 14:38:59,878 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 14:38:59,878 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 14:38:59,878 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 14:38:59,879 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 14:38:59,879 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 14:38:59,896 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2020-10-27 14:38:59,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:38:59,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:38:59,908 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] [2020-10-27 14:38:59,908 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:38:59,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:38:59,915 INFO L82 PathProgramCache]: Analyzing trace with hash -1361575079, now seen corresponding path program 1 times [2020-10-27 14:38:59,936 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:38:59,936 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [462076882] [2020-10-27 14:38:59,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:00,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,787 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:39:00,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 14:39:00,788 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 626 [2020-10-27 14:39:00,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-10-27 14:39:00,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:00,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 14:39:00,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:00,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:00,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:00,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 14:39:00,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:00,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:00,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:00,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:00,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:00,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:00,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:00,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:39:00,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 14:39:00,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:00,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:00,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-27 14:39:00,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:00,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:00,977 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:39:00,978 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [462076882] [2020-10-27 14:39:00,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:39:00,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 14:39:00,982 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [689022717] [2020-10-27 14:39:00,987 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-27 14:39:00,988 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:01,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-27 14:39:01,004 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:39:01,006 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 3 states. [2020-10-27 14:39:01,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:01,114 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2020-10-27 14:39:01,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 14:39:01,116 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-10-27 14:39:01,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:01,124 INFO L225 Difference]: With dead ends: 59 [2020-10-27 14:39:01,124 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 14:39:01,128 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-27 14:39:01,147 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 14:39:01,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 14:39:01,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 14:39:01,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 28 transitions. [2020-10-27 14:39:01,176 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 28 transitions. Word has length 22 [2020-10-27 14:39:01,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:01,177 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 28 transitions. [2020-10-27 14:39:01,177 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-27 14:39:01,177 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 28 transitions. [2020-10-27 14:39:01,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-27 14:39:01,179 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:01,179 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] [2020-10-27 14:39:01,180 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 14:39:01,181 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:01,183 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:01,184 INFO L82 PathProgramCache]: Analyzing trace with hash 1173980304, now seen corresponding path program 1 times [2020-10-27 14:39:01,184 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:01,185 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [386841141] [2020-10-27 14:39:01,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:01,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:01,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:01,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:01,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 14:39:01,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 14:39:01,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-10-27 14:39:01,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 14:39:01,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 14:39:01,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-10-27 14:39:01,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:01,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 14:39:01,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:01,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:01,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:01,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 14:39:01,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:39:01,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 14:39:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:01,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 14:39:01,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:01,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-27 14:39:01,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 14:39:01,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 14:39:01,629 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 14:39:01,629 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 14:39:01,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 14:39:01,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 14:39:01,630 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 14:39:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 14:39:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 14:39:01,630 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 14:39:01,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 14:39:01,635 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 14:39:01,636 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [386841141] [2020-10-27 14:39:01,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 14:39:01,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 14:39:01,636 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2102789687] [2020-10-27 14:39:01,640 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 14:39:01,640 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 14:39:01,641 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 14:39:01,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 14:39:01,643 INFO L87 Difference]: Start difference. First operand 26 states and 28 transitions. Second operand 5 states. [2020-10-27 14:39:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 14:39:01,877 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-10-27 14:39:01,878 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 14:39:01,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-10-27 14:39:01,878 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 14:39:01,879 INFO L225 Difference]: With dead ends: 39 [2020-10-27 14:39:01,880 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 14:39:01,881 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 14:39:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 14:39:01,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-10-27 14:39:01,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-27 14:39:01,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-27 14:39:01,889 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 22 [2020-10-27 14:39:01,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 14:39:01,890 INFO L481 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-27 14:39:01,890 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 14:39:01,890 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-27 14:39:01,891 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 14:39:01,891 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 14:39:01,891 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] [2020-10-27 14:39:01,891 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 14:39:01,891 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 14:39:01,892 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 14:39:01,892 INFO L82 PathProgramCache]: Analyzing trace with hash 1619095335, now seen corresponding path program 1 times [2020-10-27 14:39:01,892 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 14:39:01,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1619703445] [2020-10-27 14:39:01,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 14:39:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 14:39:01,915 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 14:39:01,915 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 14:39:01,919 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 14:39:01,936 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 02:39:01 BoogieIcfgContainer [2020-10-27 14:39:01,936 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 14:39:01,939 INFO L168 Benchmark]: Toolchain (without parser) took 3026.77 ms. Allocated memory is still 151.0 MB. Free memory was 125.7 MB in the beginning and 83.8 MB in the end (delta: 41.9 MB). Peak memory consumption was 42.9 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:01,939 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 14:39:01,940 INFO L168 Benchmark]: CACSL2BoogieTranslator took 397.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 115.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:01,941 INFO L168 Benchmark]: Boogie Preprocessor took 79.44 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:01,942 INFO L168 Benchmark]: RCFGBuilder took 408.42 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 131.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:01,943 INFO L168 Benchmark]: TraceAbstraction took 2125.18 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 83.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 46.5 MB. Max. memory is 8.0 GB. [2020-10-27 14:39:01,946 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 151.0 MB. Free memory is still 123.9 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 397.11 ms. Allocated memory is still 151.0 MB. Free memory was 124.9 MB in the beginning and 115.2 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 79.44 ms. Allocated memory is still 151.0 MB. Free memory was 115.2 MB in the beginning and 113.5 MB in the end (delta: 1.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 408.42 ms. Allocated memory is still 151.0 MB. Free memory was 113.5 MB in the beginning and 131.3 MB in the end (delta: -17.8 MB). Peak memory consumption was 16.3 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2125.18 ms. Allocated memory is still 151.0 MB. Free memory was 130.8 MB in the beginning and 83.8 MB in the end (delta: 47.0 MB). Peak memory consumption was 46.5 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] int sum[1]; [L29] int *a = malloc(sizeof(int)*N); [L31] i=0 [L31] COND TRUE i N) [L15] COND TRUE !(cond) [L15] CALL reach_error() [L10] __assert_fail("0", "ms2f.c", 10, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 6 procedures, 36 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 52 SDtfs, 35 SDslu, 15 SDs, 0 SdLazy, 65 SolverSat, 15 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 18 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 1.2s InterpolantComputationTime, 71 NumberOfCodeBlocks, 71 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 42 ConstructedInterpolants, 0 QuantifiedInterpolants, 2520 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...