/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/ms4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:11:34,147 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:11:34,150 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:11:34,174 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:11:34,174 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:11:34,175 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:11:34,177 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:11:34,178 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:11:34,180 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:11:34,181 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:11:34,182 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:11:34,183 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:11:34,183 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:11:34,184 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:11:34,185 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:11:34,186 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:11:34,187 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:11:34,188 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:11:34,190 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:11:34,192 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:11:34,193 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:11:34,194 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:11:34,195 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:11:34,196 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:11:34,198 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:11:34,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:11:34,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:11:34,200 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:11:34,200 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:11:34,201 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:11:34,201 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:11:34,202 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:11:34,203 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:11:34,204 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:11:34,204 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:11:34,205 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:11:34,207 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:11:34,207 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:11:34,207 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:11:34,208 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:11:34,211 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:11:34,212 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 10:11:34,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:11:34,260 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:11:34,264 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:11:34,264 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:11:34,264 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:11:34,265 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:11:34,265 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:11:34,265 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:11:34,265 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:11:34,265 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:11:34,266 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:11:34,266 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:11:34,267 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:11:34,267 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:11:34,267 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:11:34,267 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:11:34,268 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:11:34,268 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:11:34,269 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:11:34,269 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:11:34,269 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:11:34,270 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:11:34,270 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:11:34,270 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:11:34,270 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:11:34,271 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:11:34,271 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:11:34,271 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:11:34,272 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:11:34,272 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 10:11:34,602 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:11:34,621 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:11:34,626 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:11:34,629 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:11:34,630 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:11:34,630 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ms4f.c [2020-10-12 10:11:34,692 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41b5fa60f/9c77fe73f14747cea8855dba78cba36a/FLAG445667dee [2020-10-12 10:11:35,148 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:11:35,149 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ms4f.c [2020-10-12 10:11:35,156 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41b5fa60f/9c77fe73f14747cea8855dba78cba36a/FLAG445667dee [2020-10-12 10:11:35,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/41b5fa60f/9c77fe73f14747cea8855dba78cba36a [2020-10-12 10:11:35,474 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:11:35,476 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:11:35,477 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:35,477 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:11:35,481 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:11:35,482 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,485 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@130f42b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35, skipping insertion in model container [2020-10-12 10:11:35,485 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:11:35,511 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:11:35,682 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:35,695 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:11:35,715 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:11:35,730 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:11:35,730 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35 WrapperNode [2020-10-12 10:11:35,730 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:11:35,731 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:11:35,731 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:11:35,731 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:11:35,829 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,829 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,838 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,838 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,848 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,860 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,862 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (1/1) ... [2020-10-12 10:11:35,864 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:11:35,865 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:11:35,865 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:11:35,865 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:11:35,866 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (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 10:11:35,936 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:11:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:11:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 10:11:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:11:35,937 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:11:35,937 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:11:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 10:11:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 10:11:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:11:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 10:11:35,938 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-12 10:11:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:11:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-12 10:11:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-12 10:11:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-12 10:11:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-12 10:11:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-12 10:11:35,939 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:11:35,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:11:36,227 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:11:36,228 INFO L295 CfgBuilder]: Removed 2 assume(true) statements. [2020-10-12 10:11:36,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:36 BoogieIcfgContainer [2020-10-12 10:11:36,234 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:11:36,235 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:11:36,235 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:11:36,238 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:11:36,239 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:11:35" (1/3) ... [2020-10-12 10:11:36,239 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101105b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:36, skipping insertion in model container [2020-10-12 10:11:36,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:11:35" (2/3) ... [2020-10-12 10:11:36,240 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@101105b4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:11:36, skipping insertion in model container [2020-10-12 10:11:36,240 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:11:36" (3/3) ... [2020-10-12 10:11:36,242 INFO L109 eAbstractionObserver]: Analyzing ICFG ms4f.c [2020-10-12 10:11:36,258 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:11:36,267 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:11:36,283 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:11:36,312 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:11:36,313 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:11:36,313 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:11:36,313 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:11:36,313 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:11:36,313 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:11:36,313 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:11:36,314 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:11:36,334 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states. [2020-10-12 10:11:36,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-12 10:11:36,344 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:36,345 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] [2020-10-12 10:11:36,345 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:36,352 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:36,352 INFO L82 PathProgramCache]: Analyzing trace with hash -432131487, now seen corresponding path program 1 times [2020-10-12 10:11:36,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:36,362 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1691132484] [2020-10-12 10:11:36,362 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:36,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:36,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:36,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:36,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:37,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:37,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-12 10:11:37,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-12 10:11:37,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 554 [2020-10-12 10:11:37,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 10:11:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-12 10:11:37,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-12 10:11:37,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-12 10:11:37,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:11:37,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:37,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:37,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:37,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 10:11:37,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:11:37,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:11:37,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:37,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:11:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:37,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:11:37,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:11:37,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-10-12 10:11:37,249 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:11:37,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:37,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:11:37,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:11:37,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:11:37,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-12 10:11:37,270 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 10:11:37,270 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:11:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:11:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:11:37,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:11:37,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:11:37,282 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 10:11:37,283 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1691132484] [2020-10-12 10:11:37,286 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:11:37,287 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 10:11:37,288 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [684411199] [2020-10-12 10:11:37,294 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 10:11:37,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:11:37,310 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 10:11:37,311 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-12 10:11:37,314 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 5 states. [2020-10-12 10:11:37,537 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:11:37,538 INFO L93 Difference]: Finished difference Result 63 states and 80 transitions. [2020-10-12 10:11:37,539 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:11:37,540 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 21 [2020-10-12 10:11:37,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:11:37,550 INFO L225 Difference]: With dead ends: 63 [2020-10-12 10:11:37,551 INFO L226 Difference]: Without dead ends: 30 [2020-10-12 10:11:37,555 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:11:37,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-10-12 10:11:37,598 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-10-12 10:11:37,600 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-10-12 10:11:37,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-10-12 10:11:37,603 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 21 [2020-10-12 10:11:37,603 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:11:37,604 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-10-12 10:11:37,604 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 10:11:37,604 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-10-12 10:11:37,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-12 10:11:37,605 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:11:37,605 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 10:11:37,606 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:11:37,606 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:11:37,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:11:37,607 INFO L82 PathProgramCache]: Analyzing trace with hash -445719797, now seen corresponding path program 1 times [2020-10-12 10:11:37,607 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:11:37,608 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [557447313] [2020-10-12 10:11:37,608 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:11:37,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-12 10:11:37,633 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-12 10:11:37,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:11:37,639 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:11:37,658 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:11:37 BoogieIcfgContainer [2020-10-12 10:11:37,658 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:11:37,661 INFO L168 Benchmark]: Toolchain (without parser) took 2184.67 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 91.9 MB in the end (delta: 10.5 MB). Peak memory consumption was 66.6 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:37,662 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:11:37,663 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.76 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:37,665 INFO L168 Benchmark]: Boogie Preprocessor took 133.56 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 179.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:37,666 INFO L168 Benchmark]: RCFGBuilder took 368.97 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 163.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:37,666 INFO L168 Benchmark]: TraceAbstraction took 1423.09 ms. Allocated memory is still 202.4 MB. Free memory was 162.6 MB in the beginning and 91.9 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:11:37,671 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.76 ms. Allocated memory is still 146.3 MB. Free memory was 102.2 MB in the beginning and 91.7 MB in the end (delta: 10.4 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 133.56 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 91.7 MB in the beginning and 179.5 MB in the end (delta: -87.8 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 368.97 ms. Allocated memory is still 202.4 MB. Free memory was 179.5 MB in the beginning and 163.3 MB in the end (delta: 16.2 MB). Peak memory consumption was 16.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1423.09 ms. Allocated memory is still 202.4 MB. Free memory was 162.6 MB in the beginning and 91.9 MB in the end (delta: 70.7 MB). Peak memory consumption was 70.7 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] int *a = malloc(sizeof(int)*N); [L29] i=0 [L29] COND TRUE i 3*N) [L13] COND TRUE !(cond) [L13] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 32 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 27 SDtfs, 39 SDslu, 16 SDs, 0 SdLazy, 56 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=32occurred 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, 1 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 47 NumberOfCodeBlocks, 47 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 20 ConstructedInterpolants, 0 QuantifiedInterpolants, 840 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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...