/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:03:43,097 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:03:43,102 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:03:43,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:03:43,150 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:03:43,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:03:43,163 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:03:43,167 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:03:43,170 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:03:43,173 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:03:43,174 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:03:43,175 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:03:43,176 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:03:43,179 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:03:43,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:03:43,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:03:43,188 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:03:43,189 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:03:43,192 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:03:43,199 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:03:43,202 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:03:43,204 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:03:43,205 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:03:43,206 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:03:43,210 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:03:43,210 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:03:43,210 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:03:43,213 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:03:43,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:03:43,215 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:03:43,215 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:03:43,216 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:03:43,217 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:03:43,218 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:03:43,219 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:03:43,220 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:03:43,220 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:03:43,221 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:03:43,221 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:03:43,222 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:03:43,224 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:03:43,225 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:03:43,276 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:03:43,276 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:03:43,279 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:03:43,279 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:03:43,279 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:03:43,280 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:03:43,280 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:03:43,281 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:03:43,281 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:03:43,281 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:03:43,282 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:03:43,282 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:03:43,283 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:03:43,283 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:03:43,283 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:03:43,284 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:03:43,284 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:03:43,284 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:03:43,284 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:03:43,285 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:03:43,285 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:03:43,285 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:43,285 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:03:43,286 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:03:43,286 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:03:43,286 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:03:43,286 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:03:43,286 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:03:43,287 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:03:43,287 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:03:43,771 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:03:43,798 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:03:43,803 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:03:43,805 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:03:43,805 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:03:43,806 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-09-25 00:03:43,890 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c76ed980c/1d91b3c845f545de9e1773c8e669437e/FLAG591c2c718 [2020-09-25 00:03:44,449 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:03:44,450 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina1f.c [2020-09-25 00:03:44,461 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c76ed980c/1d91b3c845f545de9e1773c8e669437e/FLAG591c2c718 [2020-09-25 00:03:44,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c76ed980c/1d91b3c845f545de9e1773c8e669437e [2020-09-25 00:03:44,818 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:03:44,824 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:03:44,826 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:44,826 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:03:44,830 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:03:44,831 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:44" (1/1) ... [2020-09-25 00:03:44,836 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8874c8e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:44, skipping insertion in model container [2020-09-25 00:03:44,836 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:44" (1/1) ... [2020-09-25 00:03:44,845 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:03:44,870 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:03:45,097 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:45,110 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:03:45,135 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:45,155 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:03:45,156 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45 WrapperNode [2020-09-25 00:03:45,156 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:45,157 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:03:45,157 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:03:45,157 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:03:45,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... [2020-09-25 00:03:45,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... [2020-09-25 00:03:45,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... [2020-09-25 00:03:45,270 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... [2020-09-25 00:03:45,278 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... [2020-09-25 00:03:45,285 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... [2020-09-25 00:03:45,287 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... [2020-09-25 00:03:45,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:03:45,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:03:45,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:03:45,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:03:45,292 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:03:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:03:45,366 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:03:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:03:45,367 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:03:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:03:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:03:45,367 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:03:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:03:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:03:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:03:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:03:45,368 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:03:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:03:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:03:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:03:45,369 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:03:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:03:45,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:03:45,728 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:03:45,728 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-25 00:03:45,734 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:45 BoogieIcfgContainer [2020-09-25 00:03:45,734 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:03:45,735 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:03:45,736 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:03:45,739 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:03:45,740 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:03:44" (1/3) ... [2020-09-25 00:03:45,740 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb7f15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:45, skipping insertion in model container [2020-09-25 00:03:45,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:45" (2/3) ... [2020-09-25 00:03:45,741 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7eb7f15c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:45, skipping insertion in model container [2020-09-25 00:03:45,741 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:45" (3/3) ... [2020-09-25 00:03:45,744 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-09-25 00:03:45,754 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:03:45,762 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:03:45,785 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:03:45,815 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:03:45,815 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:03:45,816 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:03:45,816 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:03:45,816 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:03:45,816 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:03:45,816 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:03:45,816 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:03:45,843 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2020-09-25 00:03:45,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 00:03:45,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:45,853 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:45,853 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:45,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:45,860 INFO L82 PathProgramCache]: Analyzing trace with hash 864246722, now seen corresponding path program 1 times [2020-09-25 00:03:45,869 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:45,870 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079536880] [2020-09-25 00:03:45,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:46,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:46,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:46,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:46,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:46,706 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-25 00:03:46,706 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 00:03:46,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 678 [2020-09-25 00:03:46,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:03:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:46,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 00:03:46,711 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:03:46,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:46,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:46,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:46,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:46,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:03:46,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:46,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:03:46,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:46,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:46,813 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:46,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:03:46,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:46,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:46,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:46,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:03:46,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:46,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 00:03:46,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:46,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:03:46,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:46,851 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:46,852 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079536880] [2020-09-25 00:03:46,855 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:46,855 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:03:46,856 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [497559] [2020-09-25 00:03:46,863 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:03:46,863 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:46,881 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:03:46,882 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:03:46,885 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 5 states. [2020-09-25 00:03:47,163 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:47,163 INFO L93 Difference]: Finished difference Result 112 states and 132 transitions. [2020-09-25 00:03:47,164 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:03:47,166 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-09-25 00:03:47,167 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:47,178 INFO L225 Difference]: With dead ends: 112 [2020-09-25 00:03:47,178 INFO L226 Difference]: Without dead ends: 55 [2020-09-25 00:03:47,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:03:47,201 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-09-25 00:03:47,227 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 54. [2020-09-25 00:03:47,229 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 00:03:47,231 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 56 transitions. [2020-09-25 00:03:47,233 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 56 transitions. Word has length 33 [2020-09-25 00:03:47,233 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:47,233 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 56 transitions. [2020-09-25 00:03:47,234 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:03:47,234 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 56 transitions. [2020-09-25 00:03:47,235 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-09-25 00:03:47,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:47,236 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:47,236 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:03:47,237 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:47,237 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:47,237 INFO L82 PathProgramCache]: Analyzing trace with hash -1661969402, now seen corresponding path program 1 times [2020-09-25 00:03:47,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:47,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284334437] [2020-09-25 00:03:47,238 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:47,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:03:47,264 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:03:47,264 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:03:47,270 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:03:47,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:03:47 BoogieIcfgContainer [2020-09-25 00:03:47,292 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:03:47,296 INFO L168 Benchmark]: Toolchain (without parser) took 2474.44 ms. Allocated memory was 147.8 MB in the beginning and 233.3 MB in the end (delta: 85.5 MB). Free memory was 102.9 MB in the beginning and 187.6 MB in the end (delta: -84.7 MB). Peak memory consumption was 773.1 kB. Max. memory is 7.1 GB. [2020-09-25 00:03:47,297 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 00:03:47,298 INFO L168 Benchmark]: CACSL2BoogieTranslator took 331.17 ms. Allocated memory is still 147.8 MB. Free memory was 102.2 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:47,299 INFO L168 Benchmark]: Boogie Preprocessor took 132.29 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 181.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:47,300 INFO L168 Benchmark]: RCFGBuilder took 444.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 163.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:47,302 INFO L168 Benchmark]: TraceAbstraction took 1557.01 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 162.4 MB in the beginning and 187.6 MB in the end (delta: -25.2 MB). Peak memory consumption was 4.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:47,306 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 147.8 MB. Free memory was 121.2 MB in the beginning and 121.0 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 331.17 ms. Allocated memory is still 147.8 MB. Free memory was 102.2 MB in the beginning and 91.9 MB in the end (delta: 10.3 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.29 ms. Allocated memory was 147.8 MB in the beginning and 203.9 MB in the end (delta: 56.1 MB). Free memory was 91.9 MB in the beginning and 181.3 MB in the end (delta: -89.4 MB). Peak memory consumption was 10.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 444.34 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 163.0 MB in the end (delta: 18.3 MB). Peak memory consumption was 18.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1557.01 ms. Allocated memory was 203.9 MB in the beginning and 233.3 MB in the end (delta: 29.4 MB). Free memory was 162.4 MB in the beginning and 187.6 MB in the end (delta: -25.2 MB). Peak memory consumption was 4.2 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i