/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 01:32:29,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 01:32:29,196 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 01:32:29,234 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 01:32:29,235 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 01:32:29,243 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 01:32:29,246 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 01:32:29,248 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 01:32:29,249 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 01:32:29,251 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 01:32:29,252 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 01:32:29,255 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 01:32:29,255 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 01:32:29,259 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 01:32:29,261 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 01:32:29,262 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 01:32:29,264 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 01:32:29,266 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 01:32:29,268 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 01:32:29,276 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 01:32:29,278 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 01:32:29,279 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 01:32:29,280 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 01:32:29,281 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 01:32:29,292 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 01:32:29,292 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 01:32:29,292 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 01:32:29,294 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 01:32:29,295 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 01:32:29,295 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 01:32:29,296 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 01:32:29,298 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 01:32:29,299 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 01:32:29,299 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 01:32:29,301 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 01:32:29,301 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 01:32:29,301 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 01:32:29,302 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 01:32:29,302 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 01:32:29,303 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 01:32:29,304 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 01:32:29,305 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 01:32:29,349 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 01:32:29,349 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 01:32:29,352 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 01:32:29,352 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 01:32:29,352 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 01:32:29,352 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 01:32:29,353 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 01:32:29,353 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 01:32:29,353 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 01:32:29,353 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 01:32:29,354 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 01:32:29,354 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 01:32:29,355 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 01:32:29,355 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 01:32:29,355 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 01:32:29,355 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 01:32:29,356 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 01:32:29,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 01:32:29,356 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 01:32:29,356 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 01:32:29,356 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 01:32:29,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 01:32:29,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 01:32:29,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 01:32:29,357 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 01:32:29,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 01:32:29,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 01:32:29,358 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 01:32:29,358 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 01:32:29,358 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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-08-22 01:32:29,649 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 01:32:29,662 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 01:32:29,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 01:32:29,667 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 01:32:29,668 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 01:32:29,668 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 01:32:29,745 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9f1bcee/1e329f187f3f496b8ff9a634d1ab38f1/FLAG7315b435c [2020-08-22 01:32:30,220 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 01:32:30,220 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 01:32:30,228 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9f1bcee/1e329f187f3f496b8ff9a634d1ab38f1/FLAG7315b435c [2020-08-22 01:32:30,582 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/1c9f1bcee/1e329f187f3f496b8ff9a634d1ab38f1 [2020-08-22 01:32:30,591 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 01:32:30,593 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 01:32:30,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 01:32:30,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 01:32:30,598 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 01:32:30,599 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@244669af and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30, skipping insertion in model container [2020-08-22 01:32:30,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 01:32:30,629 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 01:32:30,818 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:32:30,835 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 01:32:30,859 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 01:32:30,876 INFO L208 MainTranslator]: Completed translation [2020-08-22 01:32:30,877 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30 WrapperNode [2020-08-22 01:32:30,877 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 01:32:30,878 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 01:32:30,878 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 01:32:30,878 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 01:32:30,963 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,963 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,973 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,974 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,984 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,994 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (1/1) ... [2020-08-22 01:32:30,996 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 01:32:30,997 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 01:32:30,997 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 01:32:30,997 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 01:32:30,998 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (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 01:32:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 01:32:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 01:32:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 01:32:31,066 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 01:32:31,067 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 01:32:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 01:32:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 01:32:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 01:32:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 01:32:31,067 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 01:32:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 01:32:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 01:32:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 01:32:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 01:32:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 01:32:31,068 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 01:32:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 01:32:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 01:32:31,069 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 01:32:31,377 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 01:32:31,377 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-22 01:32:31,383 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:32:31 BoogieIcfgContainer [2020-08-22 01:32:31,384 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 01:32:31,385 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 01:32:31,385 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 01:32:31,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 01:32:31,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 01:32:30" (1/3) ... [2020-08-22 01:32:31,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efde965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:32:31, skipping insertion in model container [2020-08-22 01:32:31,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 01:32:30" (2/3) ... [2020-08-22 01:32:31,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1efde965 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 01:32:31, skipping insertion in model container [2020-08-22 01:32:31,390 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 01:32:31" (3/3) ... [2020-08-22 01:32:31,392 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-22 01:32:31,405 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 01:32:31,414 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 01:32:31,431 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 01:32:31,461 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 01:32:31,461 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 01:32:31,461 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 01:32:31,462 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 01:32:31,462 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 01:32:31,462 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 01:32:31,462 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 01:32:31,462 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 01:32:31,484 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-22 01:32:31,492 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 01:32:31,493 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:32:31,494 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] [2020-08-22 01:32:31,494 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:32:31,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:32:31,501 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-08-22 01:32:31,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:32:31,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157839265] [2020-08-22 01:32:31,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:32:31,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:31,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:32:31,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:31,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:32:31,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:31,729 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 01:32:31,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [157839265] [2020-08-22 01:32:31,732 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:32:31,732 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 01:32:31,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1193545642] [2020-08-22 01:32:31,739 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 01:32:31,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:32:31,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 01:32:31,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 01:32:31,755 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-08-22 01:32:31,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:32:31,951 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-08-22 01:32:31,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 01:32:31,954 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-22 01:32:31,954 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:32:31,963 INFO L225 Difference]: With dead ends: 82 [2020-08-22 01:32:31,964 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 01:32:31,968 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 01:32:31,986 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 01:32:32,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-22 01:32:32,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 01:32:32,010 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-08-22 01:32:32,011 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-08-22 01:32:32,011 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:32:32,012 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-08-22 01:32:32,012 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 01:32:32,012 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-08-22 01:32:32,013 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 01:32:32,013 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:32:32,013 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] [2020-08-22 01:32:32,014 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 01:32:32,014 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:32:32,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:32:32,015 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-08-22 01:32:32,015 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:32:32,016 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [706810619] [2020-08-22 01:32:32,016 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:32:32,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:32,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 01:32:32,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:32,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 01:32:32,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 01:32:32,160 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 01:32:32,160 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [706810619] [2020-08-22 01:32:32,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 01:32:32,161 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 01:32:32,161 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1401803849] [2020-08-22 01:32:32,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 01:32:32,166 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 01:32:32,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 01:32:32,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 01:32:32,166 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-08-22 01:32:32,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 01:32:32,370 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-08-22 01:32:32,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 01:32:32,371 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 01:32:32,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 01:32:32,374 INFO L225 Difference]: With dead ends: 83 [2020-08-22 01:32:32,375 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 01:32:32,376 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 01:32:32,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 01:32:32,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-08-22 01:32:32,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 01:32:32,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-22 01:32:32,393 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-08-22 01:32:32,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 01:32:32,394 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-22 01:32:32,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 01:32:32,394 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-22 01:32:32,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 01:32:32,396 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 01:32:32,396 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] [2020-08-22 01:32:32,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 01:32:32,396 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 01:32:32,397 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 01:32:32,397 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-08-22 01:32:32,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 01:32:32,398 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [157829375] [2020-08-22 01:32:32,398 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 01:32:32,457 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 01:32:32,457 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 01:32:32,458 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 01:32:32,467 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 01:32:32,490 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 01:32:32,490 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 01:32:32 BoogieIcfgContainer [2020-08-22 01:32:32,490 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 01:32:32,494 INFO L168 Benchmark]: Toolchain (without parser) took 1899.28 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 101.3 MB in the beginning and 88.9 MB in the end (delta: 12.4 MB). Peak memory consumption was 74.8 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:32,495 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 01:32:32,496 INFO L168 Benchmark]: CACSL2BoogieTranslator took 283.58 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 89.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:32,497 INFO L168 Benchmark]: Boogie Preprocessor took 118.63 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 177.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:32,498 INFO L168 Benchmark]: RCFGBuilder took 386.89 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 157.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:32,499 INFO L168 Benchmark]: TraceAbstraction took 1105.37 ms. Allocated memory is still 200.3 MB. Free memory was 156.5 MB in the beginning and 88.9 MB in the end (delta: 67.6 MB). Peak memory consumption was 67.6 MB. Max. memory is 7.1 GB. [2020-08-22 01:32:32,503 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 283.58 ms. Allocated memory is still 137.9 MB. Free memory was 101.1 MB in the beginning and 89.8 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.63 ms. Allocated memory was 137.9 MB in the beginning and 200.3 MB in the end (delta: 62.4 MB). Free memory was 89.6 MB in the beginning and 177.5 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 386.89 ms. Allocated memory is still 200.3 MB. Free memory was 177.5 MB in the beginning and 157.2 MB in the end (delta: 20.3 MB). Peak memory consumption was 20.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1105.37 ms. Allocated memory is still 200.3 MB. Free memory was 156.5 MB in the beginning and 88.9 MB in the end (delta: 67.6 MB). Peak memory consumption was 67.6 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