/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.1 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/array-fpi/ssinaf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 03:09:36,220 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 03:09:36,224 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 03:09:36,266 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 03:09:36,267 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 03:09:36,276 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 03:09:36,278 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 03:09:36,281 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 03:09:36,284 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 03:09:36,287 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 03:09:36,288 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 03:09:36,289 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 03:09:36,289 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 03:09:36,293 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 03:09:36,295 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 03:09:36,296 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 03:09:36,298 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 03:09:36,299 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 03:09:36,300 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 03:09:36,308 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 03:09:36,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 03:09:36,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 03:09:36,312 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 03:09:36,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 03:09:36,330 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 03:09:36,330 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 03:09:36,331 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 03:09:36,335 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 03:09:36,335 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 03:09:36,336 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 03:09:36,337 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 03:09:36,337 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 03:09:36,339 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 03:09:36,340 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 03:09:36,342 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 03:09:36,342 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 03:09:36,343 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 03:09:36,343 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 03:09:36,344 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 03:09:36,344 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 03:09:36,345 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 03:09:36,347 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-22 03:09:36,386 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 03:09:36,386 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 03:09:36,388 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 03:09:36,388 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 03:09:36,388 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 03:09:36,389 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 03:09:36,389 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 03:09:36,389 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 03:09:36,389 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 03:09:36,390 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 03:09:36,391 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 03:09:36,391 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 03:09:36,391 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 03:09:36,391 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 03:09:36,392 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 03:09:36,392 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 03:09:36,392 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 03:09:36,392 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 03:09:36,392 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 03:09:36,393 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 03:09:36,393 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 03:09:36,393 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:09:36,393 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 03:09:36,393 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 03:09:36,394 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 03:09:36,394 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 03:09:36,394 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 03:09:36,394 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 03:09:36,394 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 03:09:36,394 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.1;log-additional-information=true; [2020-08-22 03:09:36,728 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 03:09:36,747 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 03:09:36,753 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 03:09:36,756 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 03:09:36,757 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 03:09:36,757 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ssinaf.c [2020-08-22 03:09:36,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c18edfd3f/f6488291264c4156972c0fad51d26acb/FLAGc18b2b5fd [2020-08-22 03:09:37,301 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 03:09:37,302 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ssinaf.c [2020-08-22 03:09:37,309 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c18edfd3f/f6488291264c4156972c0fad51d26acb/FLAGc18b2b5fd [2020-08-22 03:09:37,651 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c18edfd3f/f6488291264c4156972c0fad51d26acb [2020-08-22 03:09:37,660 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 03:09:37,661 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 03:09:37,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:37,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 03:09:37,668 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 03:09:37,669 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:37,672 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e996b6a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37, skipping insertion in model container [2020-08-22 03:09:37,672 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:37,679 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 03:09:37,704 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 03:09:37,869 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:37,877 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 03:09:37,899 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 03:09:37,916 INFO L208 MainTranslator]: Completed translation [2020-08-22 03:09:37,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37 WrapperNode [2020-08-22 03:09:37,917 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 03:09:37,918 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 03:09:37,918 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 03:09:37,918 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 03:09:38,019 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:38,022 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:38,031 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:38,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:38,041 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:38,048 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:38,050 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... [2020-08-22 03:09:38,053 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 03:09:38,053 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 03:09:38,054 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 03:09:38,054 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 03:09:38,055 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 03:09:38,125 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 03:09:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 03:09:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 03:09:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 03:09:38,126 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 03:09:38,126 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 03:09:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 03:09:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 03:09:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 03:09:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 03:09:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 03:09:38,127 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 03:09:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 03:09:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 03:09:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 03:09:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 03:09:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 03:09:38,128 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 03:09:38,129 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 03:09:38,471 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 03:09:38,471 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 03:09:38,476 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:38 BoogieIcfgContainer [2020-08-22 03:09:38,476 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 03:09:38,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 03:09:38,478 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 03:09:38,481 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 03:09:38,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 03:09:37" (1/3) ... [2020-08-22 03:09:38,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355dfe2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:38, skipping insertion in model container [2020-08-22 03:09:38,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 03:09:37" (2/3) ... [2020-08-22 03:09:38,483 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@355dfe2f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 03:09:38, skipping insertion in model container [2020-08-22 03:09:38,483 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 03:09:38" (3/3) ... [2020-08-22 03:09:38,485 INFO L109 eAbstractionObserver]: Analyzing ICFG ssinaf.c [2020-08-22 03:09:38,496 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 03:09:38,503 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 03:09:38,518 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 03:09:38,544 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 03:09:38,544 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 03:09:38,545 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 03:09:38,545 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 03:09:38,545 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 03:09:38,545 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 03:09:38,546 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 03:09:38,546 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 03:09:38,567 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-22 03:09:38,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 03:09:38,575 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:38,576 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] [2020-08-22 03:09:38,576 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:38,583 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash 1994596369, now seen corresponding path program 1 times [2020-08-22 03:09:38,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:38,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464006118] [2020-08-22 03:09:38,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:38,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:38,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:38,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:38,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:38,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:38,802 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:09:38,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464006118] [2020-08-22 03:09:38,805 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:38,806 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 03:09:38,807 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121572464] [2020-08-22 03:09:38,812 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 03:09:38,813 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:38,827 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 03:09:38,828 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:09:38,830 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-22 03:09:38,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:38,966 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-22 03:09:38,967 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 03:09:38,969 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 28 [2020-08-22 03:09:38,969 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:38,978 INFO L225 Difference]: With dead ends: 76 [2020-08-22 03:09:38,978 INFO L226 Difference]: Without dead ends: 38 [2020-08-22 03:09:38,982 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 03:09:38,998 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-08-22 03:09:39,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-08-22 03:09:39,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-08-22 03:09:39,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 43 transitions. [2020-08-22 03:09:39,022 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 43 transitions. Word has length 28 [2020-08-22 03:09:39,022 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:39,022 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 43 transitions. [2020-08-22 03:09:39,023 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 03:09:39,023 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 43 transitions. [2020-08-22 03:09:39,024 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-08-22 03:09:39,024 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:39,024 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] [2020-08-22 03:09:39,025 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 03:09:39,025 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:39,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:39,026 INFO L82 PathProgramCache]: Analyzing trace with hash 1530390023, now seen corresponding path program 1 times [2020-08-22 03:09:39,026 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:39,026 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591588170] [2020-08-22 03:09:39,026 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:39,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:39,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 03:09:39,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:39,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 03:09:39,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 03:09:39,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 03:09:39,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591588170] [2020-08-22 03:09:39,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 03:09:39,193 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 03:09:39,193 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [126238680] [2020-08-22 03:09:39,195 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 03:09:39,195 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 03:09:39,195 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 03:09:39,196 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 03:09:39,196 INFO L87 Difference]: Start difference. First operand 38 states and 43 transitions. Second operand 5 states. [2020-08-22 03:09:39,398 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 03:09:39,399 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-08-22 03:09:39,399 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 03:09:39,400 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-08-22 03:09:39,400 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 03:09:39,403 INFO L225 Difference]: With dead ends: 75 [2020-08-22 03:09:39,404 INFO L226 Difference]: Without dead ends: 52 [2020-08-22 03:09:39,405 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-08-22 03:09:39,406 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-08-22 03:09:39,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 43. [2020-08-22 03:09:39,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-08-22 03:09:39,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2020-08-22 03:09:39,421 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 28 [2020-08-22 03:09:39,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 03:09:39,421 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2020-08-22 03:09:39,422 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 03:09:39,422 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2020-08-22 03:09:39,423 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 03:09:39,423 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 03:09:39,424 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] [2020-08-22 03:09:39,424 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 03:09:39,424 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 03:09:39,424 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 03:09:39,425 INFO L82 PathProgramCache]: Analyzing trace with hash 1357692925, now seen corresponding path program 1 times [2020-08-22 03:09:39,425 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 03:09:39,425 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [300613693] [2020-08-22 03:09:39,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 03:09:39,458 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 03:09:39,459 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 03:09:39,459 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 03:09:39,464 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 03:09:39,484 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 03:09:39,485 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 03:09:39 BoogieIcfgContainer [2020-08-22 03:09:39,485 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 03:09:39,489 INFO L168 Benchmark]: Toolchain (without parser) took 1826.19 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 102.7 MB in the beginning and 95.7 MB in the end (delta: 7.1 MB). Peak memory consumption was 62.7 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:39,490 INFO L168 Benchmark]: CDTParser took 0.77 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 03:09:39,491 INFO L168 Benchmark]: CACSL2BoogieTranslator took 253.14 ms. Allocated memory is still 147.8 MB. Free memory was 102.7 MB in the beginning and 91.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:39,492 INFO L168 Benchmark]: Boogie Preprocessor took 135.18 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 180.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:39,493 INFO L168 Benchmark]: RCFGBuilder took 422.74 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 160.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:39,494 INFO L168 Benchmark]: TraceAbstraction took 1008.03 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 95.7 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 MB. Max. memory is 7.1 GB. [2020-08-22 03:09:39,498 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.77 ms. Allocated memory is still 147.8 MB. Free memory was 121.1 MB in the beginning and 120.7 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 253.14 ms. Allocated memory is still 147.8 MB. Free memory was 102.7 MB in the beginning and 91.7 MB in the end (delta: 11.1 MB). Peak memory consumption was 11.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 135.18 ms. Allocated memory was 147.8 MB in the beginning and 203.4 MB in the end (delta: 55.6 MB). Free memory was 91.7 MB in the beginning and 180.8 MB in the end (delta: -89.1 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 422.74 ms. Allocated memory is still 203.4 MB. Free memory was 179.9 MB in the beginning and 160.6 MB in the end (delta: 19.3 MB). Peak memory consumption was 19.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1008.03 ms. Allocated memory is still 203.4 MB. Free memory was 160.6 MB in the beginning and 95.7 MB in the end (delta: 64.9 MB). Peak memory consumption was 64.9 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