/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/res2of.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 00:03:28,517 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 00:03:28,521 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 00:03:28,553 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 00:03:28,554 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 00:03:28,555 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 00:03:28,557 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 00:03:28,559 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 00:03:28,560 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 00:03:28,561 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 00:03:28,563 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 00:03:28,564 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 00:03:28,564 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 00:03:28,566 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 00:03:28,567 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 00:03:28,568 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 00:03:28,569 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 00:03:28,570 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 00:03:28,572 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 00:03:28,574 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 00:03:28,576 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 00:03:28,577 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 00:03:28,578 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 00:03:28,579 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 00:03:28,582 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 00:03:28,582 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 00:03:28,583 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 00:03:28,584 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 00:03:28,584 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 00:03:28,585 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 00:03:28,586 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 00:03:28,587 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 00:03:28,588 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 00:03:28,589 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 00:03:28,590 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 00:03:28,590 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 00:03:28,591 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 00:03:28,591 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 00:03:28,591 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 00:03:28,592 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 00:03:28,593 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 00:03:28,594 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 00:03:28,620 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 00:03:28,621 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 00:03:28,622 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 00:03:28,622 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 00:03:28,623 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 00:03:28,623 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 00:03:28,623 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 00:03:28,623 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 00:03:28,624 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 00:03:28,624 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 00:03:28,624 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 00:03:28,624 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 00:03:28,624 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 00:03:28,625 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 00:03:28,625 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 00:03:28,625 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 00:03:28,625 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 00:03:28,625 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 00:03:28,626 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 00:03:28,626 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 00:03:28,626 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 00:03:28,626 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 00:03:28,626 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 00:03:28,627 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 00:03:28,627 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 00:03:28,627 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 00:03:28,627 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 00:03:28,627 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 00:03:28,628 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 00:03:28,628 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true; [2020-09-25 00:03:29,112 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 00:03:29,132 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 00:03:29,137 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 00:03:29,139 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 00:03:29,139 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 00:03:29,141 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2of.c [2020-09-25 00:03:29,248 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0165196f/360c03b3eab640f1ac3d15b50933bdce/FLAGafc14e5b6 [2020-09-25 00:03:29,821 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 00:03:29,822 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2of.c [2020-09-25 00:03:29,831 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0165196f/360c03b3eab640f1ac3d15b50933bdce/FLAGafc14e5b6 [2020-09-25 00:03:30,154 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c0165196f/360c03b3eab640f1ac3d15b50933bdce [2020-09-25 00:03:30,167 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 00:03:30,173 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 00:03:30,174 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:30,174 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 00:03:30,178 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 00:03:30,180 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,184 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1850e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30, skipping insertion in model container [2020-09-25 00:03:30,185 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,194 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 00:03:30,223 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 00:03:30,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:30,500 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 00:03:30,531 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 00:03:30,550 INFO L208 MainTranslator]: Completed translation [2020-09-25 00:03:30,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30 WrapperNode [2020-09-25 00:03:30,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 00:03:30,552 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 00:03:30,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 00:03:30,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 00:03:30,658 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,658 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,674 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,675 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,685 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,693 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,695 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (1/1) ... [2020-09-25 00:03:30,700 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 00:03:30,701 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 00:03:30,701 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 00:03:30,701 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 00:03:30,704 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (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 [2020-09-25 00:03:30,782 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 00:03:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 00:03:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-25 00:03:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 00:03:30,783 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 00:03:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 00:03:30,783 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-25 00:03:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-25 00:03:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 00:03:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 00:03:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-25 00:03:30,784 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 00:03:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-25 00:03:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-25 00:03:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-25 00:03:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-25 00:03:30,785 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-25 00:03:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 00:03:30,786 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 00:03:31,192 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 00:03:31,192 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-09-25 00:03:31,197 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:31 BoogieIcfgContainer [2020-09-25 00:03:31,198 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 00:03:31,199 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 00:03:31,199 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 00:03:31,203 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 00:03:31,203 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:03:30" (1/3) ... [2020-09-25 00:03:31,204 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705ad6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:31, skipping insertion in model container [2020-09-25 00:03:31,204 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:03:30" (2/3) ... [2020-09-25 00:03:31,205 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@705ad6df and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:03:31, skipping insertion in model container [2020-09-25 00:03:31,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:03:31" (3/3) ... [2020-09-25 00:03:31,207 INFO L109 eAbstractionObserver]: Analyzing ICFG res2of.c [2020-09-25 00:03:31,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 00:03:31,228 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 00:03:31,250 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 00:03:31,279 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 00:03:31,279 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 00:03:31,280 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 00:03:31,280 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 00:03:31,280 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 00:03:31,280 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 00:03:31,280 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 00:03:31,280 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 00:03:31,301 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-09-25 00:03:31,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 00:03:31,311 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:31,312 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:31,312 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:31,318 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:31,319 INFO L82 PathProgramCache]: Analyzing trace with hash -386797637, now seen corresponding path program 1 times [2020-09-25 00:03:31,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:31,328 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1038592254] [2020-09-25 00:03:31,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:31,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:31,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:31,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:32,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:33,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:33,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 00:03:33,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 00:03:33,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2274 [2020-09-25 00:03:33,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:33,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 00:03:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 00:03:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 00:03:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 00:03:33,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 00:03:33,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:33,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:33,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:33,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 00:03:33,898 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:33,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 00:03:33,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 00:03:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:33,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 00:03:33,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 00:03:33,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 00:03:33,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 00:03:33,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 00:03:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 00:03:33,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 00:03:33,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 00:03:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 00:03:33,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-25 00:03:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 00:03:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 00:03:33,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 00:03:33,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 00:03:33,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 00:03:33,937 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1038592254] [2020-09-25 00:03:33,939 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 00:03:33,939 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 00:03:33,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [652497027] [2020-09-25 00:03:33,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 00:03:33,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 00:03:33,965 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 00:03:33,967 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 00:03:33,969 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 5 states. [2020-09-25 00:03:34,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 00:03:34,411 INFO L93 Difference]: Finished difference Result 177 states and 215 transitions. [2020-09-25 00:03:34,412 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 00:03:34,414 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 43 [2020-09-25 00:03:34,415 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 00:03:34,431 INFO L225 Difference]: With dead ends: 177 [2020-09-25 00:03:34,431 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 00:03:34,437 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 00:03:34,467 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 00:03:34,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 86. [2020-09-25 00:03:34,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-25 00:03:34,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-09-25 00:03:34,510 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 43 [2020-09-25 00:03:34,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 00:03:34,510 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-09-25 00:03:34,511 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 00:03:34,511 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-09-25 00:03:34,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 86 [2020-09-25 00:03:34,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 00:03:34,515 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 00:03:34,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 00:03:34,515 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 00:03:34,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 00:03:34,516 INFO L82 PathProgramCache]: Analyzing trace with hash -849907375, now seen corresponding path program 1 times [2020-09-25 00:03:34,516 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 00:03:34,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120477361] [2020-09-25 00:03:34,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 00:03:34,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-25 00:03:34,576 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-25 00:03:34,576 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-25 00:03:34,584 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 00:03:34,614 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 12:03:34 BoogieIcfgContainer [2020-09-25 00:03:34,615 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 00:03:34,619 INFO L168 Benchmark]: Toolchain (without parser) took 4448.15 ms. Allocated memory was 146.8 MB in the beginning and 246.4 MB in the end (delta: 99.6 MB). Free memory was 103.0 MB in the beginning and 157.5 MB in the end (delta: -54.5 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:34,620 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-25 00:03:34,621 INFO L168 Benchmark]: CACSL2BoogieTranslator took 377.27 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 91.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:34,623 INFO L168 Benchmark]: Boogie Preprocessor took 149.13 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 180.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:34,624 INFO L168 Benchmark]: RCFGBuilder took 496.80 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 156.6 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:34,625 INFO L168 Benchmark]: TraceAbstraction took 3416.03 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 155.9 MB in the beginning and 157.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. [2020-09-25 00:03:34,629 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 377.27 ms. Allocated memory is still 146.8 MB. Free memory was 102.3 MB in the beginning and 91.0 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 149.13 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 91.0 MB in the beginning and 180.8 MB in the end (delta: -89.8 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 496.80 ms. Allocated memory is still 203.4 MB. Free memory was 180.8 MB in the beginning and 156.6 MB in the end (delta: 24.2 MB). Peak memory consumption was 24.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3416.03 ms. Allocated memory was 203.4 MB in the beginning and 246.4 MB in the end (delta: 43.0 MB). Free memory was 155.9 MB in the beginning and 157.5 MB in the end (delta: -1.6 MB). Peak memory consumption was 41.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L28] int *b = malloc(sizeof(int)*N); [L29] int *c = malloc(sizeof(int)*N); [L31] sum[0] = 0 [L32] i=0 [L32] COND TRUE i