/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 --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --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/modsf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:09:18,109 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:09:18,114 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:09:18,154 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:09:18,155 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:09:18,164 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:09:18,166 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:09:18,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:09:18,169 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:09:18,171 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:09:18,172 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:09:18,174 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:09:18,175 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:09:18,178 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:09:18,181 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:09:18,182 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:09:18,183 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:09:18,185 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:09:18,187 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:09:18,195 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:09:18,197 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:09:18,197 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:09:18,198 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:09:18,199 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:09:18,211 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:09:18,213 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:09:18,213 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:09:18,214 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:09:18,214 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:09:18,218 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:09:18,218 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:09:18,218 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:09:18,221 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:09:18,222 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:09:18,223 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:09:18,223 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:09:18,227 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:09:18,227 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:09:18,227 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:09:18,228 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:09:18,229 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:09:18,233 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 [2020-08-22 03:09:18,270 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:09:18,271 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:09:18,273 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:09:18,273 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:09:18,273 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:09:18,273 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:09:18,274 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:09:18,274 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:09:18,274 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:09:18,274 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:09:18,275 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:09:18,275 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:09:18,276 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:09:18,276 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:09:18,276 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:09:18,276 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:09:18,277 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:09:18,277 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:09:18,277 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:09:18,277 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:09:18,278 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:09:18,278 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:09:18,278 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:09:18,278 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:09:18,278 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:09:18,279 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:09:18,279 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:09:18,279 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:09:18,279 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:09:18,279 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.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 03:09:18,572 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:09:18,591 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:09:18,596 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:09:18,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:09:18,598 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:09:18,599 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/modsf.c [2020-08-22 03:09:18,672 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5433ca40e/2190e57092ab458e86f59c981e9c035b/FLAGd538789a8 [2020-08-22 03:09:19,147 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:09:19,148 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/modsf.c [2020-08-22 03:09:19,155 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5433ca40e/2190e57092ab458e86f59c981e9c035b/FLAGd538789a8 [2020-08-22 03:09:19,514 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5433ca40e/2190e57092ab458e86f59c981e9c035b [2020-08-22 03:09:19,525 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:09:19,527 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:09:19,530 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:19,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:09:19,534 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:09:19,535 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,539 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@260ceee4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19, skipping insertion in model container [2020-08-22 03:09:19,539 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,548 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:09:19,569 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:09:19,756 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:19,766 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:09:19,792 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:19,809 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:09:19,809 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19 WrapperNode [2020-08-22 03:09:19,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:19,810 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:09:19,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:09:19,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:09:19,903 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,904 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,915 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,915 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,925 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,931 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,933 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (1/1) ... [2020-08-22 03:09:19,935 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:09:19,936 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:09:19,936 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:09:19,936 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:09:19,937 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (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 [2020-08-22 03:09:20,003 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:09:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:09:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:09:20,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 03:09:20,005 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:09:20,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:09:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:09:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:09:20,006 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 03:09:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:09:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:09:20,007 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:09:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:09:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:09:20,008 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:09:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:09:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:09:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:09:20,009 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:09:20,279 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:09:20,280 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-08-22 03:09:20,284 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:20 BoogieIcfgContainer [2020-08-22 03:09:20,284 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:09:20,287 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:09:20,287 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:09:20,290 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:09:20,290 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:09:19" (1/3) ... [2020-08-22 03:09:20,291 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10763969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:20, skipping insertion in model container [2020-08-22 03:09:20,291 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:19" (2/3) ... [2020-08-22 03:09:20,292 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10763969 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:20, skipping insertion in model container [2020-08-22 03:09:20,292 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:20" (3/3) ... [2020-08-22 03:09:20,293 INFO L109 eAbstractionObserver]: Analyzing ICFG modsf.c [2020-08-22 03:09:20,309 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:09:20,315 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:09:20,332 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:09:20,362 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:09:20,362 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:09:20,363 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:09:20,363 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:09:20,363 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:09:20,363 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:09:20,363 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:09:20,364 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:09:20,386 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2020-08-22 03:09:20,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 03:09:20,394 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:20,395 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] [2020-08-22 03:09:20,395 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:20,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:20,403 INFO L82 PathProgramCache]: Analyzing trace with hash -173101897, now seen corresponding path program 1 times [2020-08-22 03:09:20,412 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:20,413 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1962532975] [2020-08-22 03:09:20,413 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:20,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:20,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:20,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:20,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:20,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:20,618 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:09:20,619 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1962532975] [2020-08-22 03:09:20,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:20,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:09:20,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2139603663] [2020-08-22 03:09:20,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:09:20,628 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:20,639 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:09:20,640 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:09:20,642 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2020-08-22 03:09:20,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:20,788 INFO L93 Difference]: Finished difference Result 70 states and 93 transitions. [2020-08-22 03:09:20,789 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:09:20,790 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-22 03:09:20,791 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:20,800 INFO L225 Difference]: With dead ends: 70 [2020-08-22 03:09:20,800 INFO L226 Difference]: Without dead ends: 35 [2020-08-22 03:09:20,804 INFO L675 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 [2020-08-22 03:09:20,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-08-22 03:09:20,841 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-08-22 03:09:20,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-08-22 03:09:20,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 39 transitions. [2020-08-22 03:09:20,846 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 39 transitions. Word has length 26 [2020-08-22 03:09:20,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:20,847 INFO L479 AbstractCegarLoop]: Abstraction has 35 states and 39 transitions. [2020-08-22 03:09:20,847 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:09:20,847 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 39 transitions. [2020-08-22 03:09:20,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 03:09:20,848 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:20,849 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] [2020-08-22 03:09:20,849 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:09:20,849 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:20,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:20,850 INFO L82 PathProgramCache]: Analyzing trace with hash 1503462707, now seen corresponding path program 1 times [2020-08-22 03:09:20,850 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:20,851 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338622054] [2020-08-22 03:09:20,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:20,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:20,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:20,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:20,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:20,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:20,984 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:09:20,984 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338622054] [2020-08-22 03:09:20,985 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:20,985 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:09:20,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592646745] [2020-08-22 03:09:20,987 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:09:20,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:20,988 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:09:20,988 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:09:20,989 INFO L87 Difference]: Start difference. First operand 35 states and 39 transitions. Second operand 5 states. [2020-08-22 03:09:21,176 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:21,177 INFO L93 Difference]: Finished difference Result 67 states and 79 transitions. [2020-08-22 03:09:21,178 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:09:21,178 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 26 [2020-08-22 03:09:21,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:21,181 INFO L225 Difference]: With dead ends: 67 [2020-08-22 03:09:21,181 INFO L226 Difference]: Without dead ends: 47 [2020-08-22 03:09:21,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:09:21,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-08-22 03:09:21,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 39. [2020-08-22 03:09:21,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-08-22 03:09:21,198 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 43 transitions. [2020-08-22 03:09:21,199 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 43 transitions. Word has length 26 [2020-08-22 03:09:21,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:21,199 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 43 transitions. [2020-08-22 03:09:21,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:09:21,200 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 43 transitions. [2020-08-22 03:09:21,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-08-22 03:09:21,201 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:21,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 03:09:21,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:09:21,202 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:21,202 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:21,203 INFO L82 PathProgramCache]: Analyzing trace with hash -260192085, now seen corresponding path program 1 times [2020-08-22 03:09:21,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:21,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376559403] [2020-08-22 03:09:21,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:21,235 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 03:09:21,236 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 03:09:21,236 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:09:21,241 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:09:21,260 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 03:09:21,260 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:09:21 BoogieIcfgContainer [2020-08-22 03:09:21,260 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:09:21,264 INFO L168 Benchmark]: Toolchain (without parser) took 1735.90 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 103.2 MB in the beginning and 100.9 MB in the end (delta: 2.3 MB). Peak memory consumption was 65.2 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:21,265 INFO L168 Benchmark]: CDTParser took 0.81 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 03:09:21,266 INFO L168 Benchmark]: CACSL2BoogieTranslator took 279.75 ms. Allocated memory is still 141.0 MB. Free memory was 103.0 MB in the beginning and 92.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:21,267 INFO L168 Benchmark]: Boogie Preprocessor took 125.34 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 181.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:21,268 INFO L168 Benchmark]: RCFGBuilder took 348.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:21,269 INFO L168 Benchmark]: TraceAbstraction took 973.60 ms. Allocated memory is still 203.9 MB. Free memory was 162.1 MB in the beginning and 100.9 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:21,273 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.81 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 279.75 ms. Allocated memory is still 141.0 MB. Free memory was 103.0 MB in the beginning and 92.2 MB in the end (delta: 10.8 MB). Peak memory consumption was 10.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 125.34 ms. Allocated memory was 141.0 MB in the beginning and 203.9 MB in the end (delta: 62.9 MB). Free memory was 92.2 MB in the beginning and 181.3 MB in the end (delta: -89.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 348.10 ms. Allocated memory is still 203.9 MB. Free memory was 181.3 MB in the beginning and 162.7 MB in the end (delta: 18.6 MB). Peak memory consumption was 18.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 973.60 ms. Allocated memory is still 203.9 MB. Free memory was 162.1 MB in the beginning and 100.9 MB in the end (delta: 61.2 MB). Peak memory consumption was 61.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 13]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] long long *a = malloc(sizeof(long long)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i