/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=0.6 --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/indp4f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 00:42:53,321 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 00:42:53,324 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 00:42:53,367 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 00:42:53,368 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 00:42:53,376 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 00:42:53,378 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 00:42:53,381 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 00:42:53,384 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 00:42:53,387 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 00:42:53,388 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 00:42:53,389 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 00:42:53,389 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 00:42:53,391 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 00:42:53,392 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 00:42:53,393 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 00:42:53,397 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 00:42:53,398 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 00:42:53,399 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 00:42:53,401 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 00:42:53,402 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 00:42:53,403 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 00:42:53,404 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 00:42:53,405 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 00:42:53,407 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 00:42:53,407 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 00:42:53,407 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 00:42:53,408 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 00:42:53,408 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 00:42:53,409 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 00:42:53,409 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 00:42:53,410 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 00:42:53,411 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 00:42:53,411 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 00:42:53,412 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 00:42:53,413 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 00:42:53,413 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 00:42:53,413 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 00:42:53,414 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 00:42:53,415 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 00:42:53,415 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 00:42:53,416 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 00:42:53,438 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 00:42:53,438 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 00:42:53,440 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 00:42:53,440 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 00:42:53,440 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 00:42:53,440 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 00:42:53,441 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 00:42:53,441 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 00:42:53,441 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 00:42:53,441 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 00:42:53,441 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 00:42:53,441 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 00:42:53,442 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 00:42:53,442 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 00:42:53,442 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 00:42:53,442 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 00:42:53,442 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 00:42:53,443 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 00:42:53,443 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 00:42:53,443 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 00:42:53,443 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 00:42:53,443 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 00:42:53,444 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 00:42:53,444 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 00:42:53,444 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 00:42:53,444 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 00:42:53,444 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 00:42:53,445 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 00:42:53,445 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 00:42:53,445 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=0.6;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=0.6;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=0.6;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=0.6;log-additional-information=true; [2020-08-22 00:42:53,775 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 00:42:53,788 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 00:42:53,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 00:42:53,796 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 00:42:53,797 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 00:42:53,798 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/indp4f.c [2020-08-22 00:42:53,873 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc8845de3/7270e765562b4cee8a1b56f41038cc78/FLAG49245da7e [2020-08-22 00:42:54,321 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 00:42:54,322 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/indp4f.c [2020-08-22 00:42:54,329 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc8845de3/7270e765562b4cee8a1b56f41038cc78/FLAG49245da7e [2020-08-22 00:42:54,761 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc8845de3/7270e765562b4cee8a1b56f41038cc78 [2020-08-22 00:42:54,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 00:42:54,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 00:42:54,774 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 00:42:54,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 00:42:54,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 00:42:54,780 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:42:54" (1/1) ... [2020-08-22 00:42:54,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@59c286c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:54, skipping insertion in model container [2020-08-22 00:42:54,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 12:42:54" (1/1) ... [2020-08-22 00:42:54,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 00:42:54,812 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 00:42:55,019 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:42:55,030 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 00:42:55,048 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 00:42:55,146 INFO L208 MainTranslator]: Completed translation [2020-08-22 00:42:55,147 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55 WrapperNode [2020-08-22 00:42:55,147 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 00:42:55,148 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 00:42:55,148 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 00:42:55,148 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 00:42:55,159 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (1/1) ... [2020-08-22 00:42:55,159 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (1/1) ... [2020-08-22 00:42:55,168 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (1/1) ... [2020-08-22 00:42:55,169 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (1/1) ... [2020-08-22 00:42:55,176 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (1/1) ... [2020-08-22 00:42:55,183 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (1/1) ... [2020-08-22 00:42:55,184 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (1/1) ... [2020-08-22 00:42:55,187 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 00:42:55,187 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 00:42:55,187 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 00:42:55,188 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 00:42:55,189 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (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 00:42:55,255 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 00:42:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 00:42:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 00:42:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 00:42:55,256 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 00:42:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 00:42:55,256 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 00:42:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 00:42:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 00:42:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 00:42:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 00:42:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 00:42:55,257 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 00:42:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 00:42:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 00:42:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 00:42:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 00:42:55,258 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 00:42:55,542 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 00:42:55,543 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-08-22 00:42:55,549 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:42:55 BoogieIcfgContainer [2020-08-22 00:42:55,549 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 00:42:55,551 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 00:42:55,551 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 00:42:55,555 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 00:42:55,555 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 12:42:54" (1/3) ... [2020-08-22 00:42:55,556 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e6088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:42:55, skipping insertion in model container [2020-08-22 00:42:55,556 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 12:42:55" (2/3) ... [2020-08-22 00:42:55,557 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@20e6088 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 12:42:55, skipping insertion in model container [2020-08-22 00:42:55,557 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 12:42:55" (3/3) ... [2020-08-22 00:42:55,559 INFO L109 eAbstractionObserver]: Analyzing ICFG indp4f.c [2020-08-22 00:42:55,571 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 00:42:55,581 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 00:42:55,597 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 00:42:55,625 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 00:42:55,625 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 00:42:55,625 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 00:42:55,626 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 00:42:55,626 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 00:42:55,626 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 00:42:55,626 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 00:42:55,627 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 00:42:55,649 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-22 00:42:55,658 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 00:42:55,658 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:42:55,659 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] [2020-08-22 00:42:55,660 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:42:55,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:42:55,666 INFO L82 PathProgramCache]: Analyzing trace with hash 1155719453, now seen corresponding path program 1 times [2020-08-22 00:42:55,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:42:55,677 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1144288386] [2020-08-22 00:42:55,677 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:42:55,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:42:55,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 00:42:55,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:42:55,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 00:42:55,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 00:42:55,884 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 00:42:55,885 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1144288386] [2020-08-22 00:42:55,887 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 00:42:55,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 00:42:55,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1119618320] [2020-08-22 00:42:55,894 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 00:42:55,895 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 00:42:55,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 00:42:55,913 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 00:42:55,916 INFO L87 Difference]: Start difference. First operand 37 states. Second operand 3 states. [2020-08-22 00:42:56,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 00:42:56,047 INFO L93 Difference]: Finished difference Result 64 states and 83 transitions. [2020-08-22 00:42:56,048 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 00:42:56,050 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 24 [2020-08-22 00:42:56,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 00:42:56,060 INFO L225 Difference]: With dead ends: 64 [2020-08-22 00:42:56,060 INFO L226 Difference]: Without dead ends: 32 [2020-08-22 00:42:56,064 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 00:42:56,090 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-08-22 00:42:56,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-08-22 00:42:56,121 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-08-22 00:42:56,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 35 transitions. [2020-08-22 00:42:56,126 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 35 transitions. Word has length 24 [2020-08-22 00:42:56,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 00:42:56,127 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 35 transitions. [2020-08-22 00:42:56,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 00:42:56,127 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 35 transitions. [2020-08-22 00:42:56,129 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-08-22 00:42:56,129 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 00:42:56,130 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] [2020-08-22 00:42:56,131 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 00:42:56,131 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 00:42:56,131 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 00:42:56,132 INFO L82 PathProgramCache]: Analyzing trace with hash -124144225, now seen corresponding path program 1 times [2020-08-22 00:42:56,132 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 00:42:56,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [937113185] [2020-08-22 00:42:56,133 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 00:42:56,187 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 00:42:56,188 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 00:42:56,188 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 00:42:56,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 00:42:56,211 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 00:42:56,211 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 12:42:56 BoogieIcfgContainer [2020-08-22 00:42:56,211 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 00:42:56,214 INFO L168 Benchmark]: Toolchain (without parser) took 1439.99 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 103.0 MB in the beginning and 129.7 MB in the end (delta: -26.7 MB). Peak memory consumption was 36.2 MB. Max. memory is 7.1 GB. [2020-08-22 00:42:56,215 INFO L168 Benchmark]: CDTParser took 0.83 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 00:42:56,216 INFO L168 Benchmark]: CACSL2BoogieTranslator took 373.27 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. [2020-08-22 00:42:56,218 INFO L168 Benchmark]: Boogie Preprocessor took 38.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:42:56,218 INFO L168 Benchmark]: RCFGBuilder took 362.25 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 162.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. [2020-08-22 00:42:56,219 INFO L168 Benchmark]: TraceAbstraction took 660.54 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 129.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 MB. Max. memory is 7.1 GB. [2020-08-22 00:42:56,224 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.83 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 373.27 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 102.7 MB in the beginning and 181.0 MB in the end (delta: -78.3 MB). Peak memory consumption was 22.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 38.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 178.7 MB in the end (delta: 2.4 MB). Peak memory consumption was 2.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 362.25 ms. Allocated memory is still 202.4 MB. Free memory was 178.7 MB in the beginning and 162.3 MB in the end (delta: 16.4 MB). Peak memory consumption was 16.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 660.54 ms. Allocated memory is still 202.4 MB. Free memory was 161.6 MB in the beginning and 129.7 MB in the end (delta: 32.0 MB). Peak memory consumption was 32.0 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 *a = malloc(sizeof(long long)*N); [L28] i=0 [L28] COND FALSE !(i