/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=0.4 --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/res2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:54:33,878 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:54:33,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:54:33,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:54:33,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:54:33,907 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:54:33,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:54:33,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:54:33,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:54:33,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:54:33,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:54:33,914 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:54:33,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:54:33,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:54:33,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:54:33,918 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:54:33,919 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:54:33,920 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:54:33,921 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:54:33,923 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:54:33,925 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:54:33,926 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:54:33,927 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:54:33,928 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:54:33,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:54:33,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:54:33,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:54:33,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:54:33,934 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:54:33,939 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:54:33,939 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:54:33,940 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:54:33,940 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:54:33,941 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:54:33,942 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:54:33,942 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:54:33,945 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:54:33,945 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:54:33,945 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:54:33,946 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:54:33,947 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:54:33,949 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 [2020-08-21 23:54:33,998 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:54:33,998 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:54:34,000 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:54:34,002 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:54:34,002 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:54:34,002 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:54:34,002 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:54:34,003 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:54:34,003 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:54:34,003 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:54:34,003 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:54:34,003 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:54:34,004 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:54:34,004 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:54:34,004 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:54:34,004 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:54:34,004 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:54:34,004 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:54:34,007 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:54:34,007 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:54:34,007 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:54:34,007 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:54:34,008 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:54:34,008 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:54:34,008 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:54:34,008 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:54:34,009 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:54:34,009 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:54:34,009 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:54:34,009 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=0.4;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=0.4;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=0.4;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=0.4;log-additional-information=true; [2020-08-21 23:54:34,350 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:54:34,369 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:54:34,377 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:54:34,379 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:54:34,380 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:54:34,381 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/res2f.c [2020-08-21 23:54:34,448 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475997ef2/e305771d74f34d9790bafde50f258e4d/FLAGc694507bc [2020-08-21 23:54:34,928 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:54:34,929 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/res2f.c [2020-08-21 23:54:34,937 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475997ef2/e305771d74f34d9790bafde50f258e4d/FLAGc694507bc [2020-08-21 23:54:35,266 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/475997ef2/e305771d74f34d9790bafde50f258e4d [2020-08-21 23:54:35,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:54:35,278 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:54:35,279 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:54:35,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:54:35,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:54:35,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,287 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@13ad76f7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35, skipping insertion in model container [2020-08-21 23:54:35,287 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,295 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:54:35,314 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:54:35,501 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:54:35,511 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:54:35,536 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:54:35,553 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:54:35,554 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35 WrapperNode [2020-08-21 23:54:35,554 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:54:35,555 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:54:35,555 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:54:35,555 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:54:35,641 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,642 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,651 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,651 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,662 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,669 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,670 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (1/1) ... [2020-08-21 23:54:35,673 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:54:35,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:54:35,674 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:54:35,674 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:54:35,675 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (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 [2020-08-21 23:54:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:54:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:54:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:54:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 23:54:35,729 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:54:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:54:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:54:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:54:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:54:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:54:35,730 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:54:35,731 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:54:36,065 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:54:36,066 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-21 23:54:36,070 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:54:36 BoogieIcfgContainer [2020-08-21 23:54:36,070 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:54:36,076 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:54:36,076 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:54:36,083 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:54:36,084 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:54:35" (1/3) ... [2020-08-21 23:54:36,084 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bddcf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:54:36, skipping insertion in model container [2020-08-21 23:54:36,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:35" (2/3) ... [2020-08-21 23:54:36,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@bddcf3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:54:36, skipping insertion in model container [2020-08-21 23:54:36,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:54:36" (3/3) ... [2020-08-21 23:54:36,091 INFO L109 eAbstractionObserver]: Analyzing ICFG res2f.c [2020-08-21 23:54:36,114 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:54:36,123 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:54:36,147 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:54:36,168 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:54:36,169 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:54:36,169 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:54:36,169 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:54:36,169 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:54:36,169 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:54:36,169 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:54:36,170 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:54:36,192 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-08-21 23:54:36,199 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 23:54:36,199 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:36,201 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:54:36,201 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:36,206 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:36,207 INFO L82 PathProgramCache]: Analyzing trace with hash 1797528887, now seen corresponding path program 1 times [2020-08-21 23:54:36,215 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:36,215 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735366310] [2020-08-21 23:54:36,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:36,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:54:36,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:36,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:54:36,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:36,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:54:36,431 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735366310] [2020-08-21 23:54:36,433 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:54:36,433 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:54:36,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1588895301] [2020-08-21 23:54:36,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:54:36,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:54:36,455 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:54:36,456 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:54:36,458 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-08-21 23:54:36,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:54:36,603 INFO L93 Difference]: Finished difference Result 76 states and 103 transitions. [2020-08-21 23:54:36,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:54:36,605 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 29 [2020-08-21 23:54:36,606 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:54:36,616 INFO L225 Difference]: With dead ends: 76 [2020-08-21 23:54:36,616 INFO L226 Difference]: Without dead ends: 36 [2020-08-21 23:54:36,620 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 [2020-08-21 23:54:36,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-08-21 23:54:36,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-08-21 23:54:36,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-08-21 23:54:36,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 41 transitions. [2020-08-21 23:54:36,660 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 41 transitions. Word has length 29 [2020-08-21 23:54:36,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:54:36,660 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 41 transitions. [2020-08-21 23:54:36,660 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:54:36,661 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 41 transitions. [2020-08-21 23:54:36,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-08-21 23:54:36,662 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:36,662 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] [2020-08-21 23:54:36,663 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:54:36,663 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:36,663 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:36,663 INFO L82 PathProgramCache]: Analyzing trace with hash 120259143, now seen corresponding path program 1 times [2020-08-21 23:54:36,664 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:36,664 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312394426] [2020-08-21 23:54:36,664 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:36,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:36,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:54:36,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:36,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:54:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:36,804 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-21 23:54:36,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312394426] [2020-08-21 23:54:36,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:54:36,805 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:54:36,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440861591] [2020-08-21 23:54:36,807 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:54:36,807 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:54:36,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:54:36,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:54:36,808 INFO L87 Difference]: Start difference. First operand 36 states and 41 transitions. Second operand 5 states. [2020-08-21 23:54:36,991 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:54:36,991 INFO L93 Difference]: Finished difference Result 69 states and 84 transitions. [2020-08-21 23:54:36,991 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:54:36,992 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-08-21 23:54:36,992 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:54:36,993 INFO L225 Difference]: With dead ends: 69 [2020-08-21 23:54:36,993 INFO L226 Difference]: Without dead ends: 48 [2020-08-21 23:54:36,995 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 [2020-08-21 23:54:36,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-08-21 23:54:37,004 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-08-21 23:54:37,004 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-08-21 23:54:37,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-08-21 23:54:37,006 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 29 [2020-08-21 23:54:37,006 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:54:37,006 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-08-21 23:54:37,007 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:54:37,007 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-08-21 23:54:37,008 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-21 23:54:37,008 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:37,009 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] [2020-08-21 23:54:37,009 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:54:37,009 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:37,010 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:37,010 INFO L82 PathProgramCache]: Analyzing trace with hash -774790125, now seen corresponding path program 1 times [2020-08-21 23:54:37,010 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:37,010 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1827994882] [2020-08-21 23:54:37,011 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:37,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-21 23:54:37,153 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-21 23:54:37,154 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:54:37,158 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:54:37,178 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:54:37 BoogieIcfgContainer [2020-08-21 23:54:37,178 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:54:37,181 INFO L168 Benchmark]: Toolchain (without parser) took 1902.31 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 103.0 MB in the beginning and 93.0 MB in the end (delta: 10.0 MB). Peak memory consumption was 72.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:37,183 INFO L168 Benchmark]: CDTParser took 0.39 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-21 23:54:37,184 INFO L168 Benchmark]: CACSL2BoogieTranslator took 274.86 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 91.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:37,185 INFO L168 Benchmark]: Boogie Preprocessor took 118.55 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 179.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:37,186 INFO L168 Benchmark]: RCFGBuilder took 397.05 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 158.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:37,186 INFO L168 Benchmark]: TraceAbstraction took 1102.52 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 93.0 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:37,191 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 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: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 274.86 ms. Allocated memory is still 139.5 MB. Free memory was 102.8 MB in the beginning and 91.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 11.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.55 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.4 MB in the beginning and 179.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 397.05 ms. Allocated memory is still 201.9 MB. Free memory was 179.5 MB in the beginning and 158.4 MB in the end (delta: 21.0 MB). Peak memory consumption was 21.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1102.52 ms. Allocated memory is still 201.9 MB. Free memory was 157.8 MB in the beginning and 93.0 MB in the end (delta: 64.8 MB). Peak memory consumption was 64.8 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] = 1 [L32] i=0 [L32] COND TRUE i