/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/ss2f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 23:54:46,039 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 23:54:46,042 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 23:54:46,080 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 23:54:46,080 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 23:54:46,081 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 23:54:46,083 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 23:54:46,085 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 23:54:46,086 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 23:54:46,087 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 23:54:46,088 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 23:54:46,089 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 23:54:46,090 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 23:54:46,091 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 23:54:46,092 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 23:54:46,093 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 23:54:46,093 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 23:54:46,094 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 23:54:46,096 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 23:54:46,098 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 23:54:46,099 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 23:54:46,100 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 23:54:46,102 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 23:54:46,102 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 23:54:46,105 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 23:54:46,105 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 23:54:46,105 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 23:54:46,106 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 23:54:46,106 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 23:54:46,107 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 23:54:46,107 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 23:54:46,108 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 23:54:46,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 23:54:46,110 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 23:54:46,111 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 23:54:46,111 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 23:54:46,111 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 23:54:46,112 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 23:54:46,112 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 23:54:46,113 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 23:54:46,113 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 23:54:46,114 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 23:54:46,136 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 23:54:46,137 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 23:54:46,140 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 23:54:46,140 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 23:54:46,141 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 23:54:46,141 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 23:54:46,141 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 23:54:46,141 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 23:54:46,141 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 23:54:46,142 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 23:54:46,142 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 23:54:46,142 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 23:54:46,142 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 23:54:46,143 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 23:54:46,143 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 23:54:46,143 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 23:54:46,143 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 23:54:46,143 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 23:54:46,143 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 23:54:46,144 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 23:54:46,144 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 23:54:46,144 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 23:54:46,144 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 23:54:46,144 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 23:54:46,145 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 23:54:46,146 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 23:54:46,146 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 23:54:46,146 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 23:54:46,146 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 23:54:46,146 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 23:54:46,431 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 23:54:46,443 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 23:54:46,447 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 23:54:46,449 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 23:54:46,449 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 23:54:46,450 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-21 23:54:46,517 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16cfbebf8/6d32943d892b4e3da465139984ee1ca0/FLAG95ad85b4f [2020-08-21 23:54:46,979 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 23:54:46,979 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-21 23:54:46,985 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16cfbebf8/6d32943d892b4e3da465139984ee1ca0/FLAG95ad85b4f [2020-08-21 23:54:47,364 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/16cfbebf8/6d32943d892b4e3da465139984ee1ca0 [2020-08-21 23:54:47,376 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 23:54:47,378 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 23:54:47,380 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 23:54:47,380 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 23:54:47,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 23:54:47,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:47,395 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7cc58bc4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47, skipping insertion in model container [2020-08-21 23:54:47,395 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:47,407 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 23:54:47,440 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 23:54:47,759 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:54:47,775 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 23:54:47,824 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 23:54:47,942 INFO L208 MainTranslator]: Completed translation [2020-08-21 23:54:47,943 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47 WrapperNode [2020-08-21 23:54:47,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 23:54:47,944 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 23:54:47,945 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 23:54:47,945 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 23:54:47,959 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:47,961 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:47,982 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:47,983 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:48,002 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:48,010 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:48,012 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (1/1) ... [2020-08-21 23:54:48,015 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 23:54:48,016 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 23:54:48,016 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 23:54:48,016 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 23:54:48,017 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (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 23:54:48,081 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 23:54:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 23:54:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-21 23:54:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-21 23:54:48,082 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 23:54:48,082 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 23:54:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-21 23:54:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-21 23:54:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-21 23:54:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 23:54:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-21 23:54:48,083 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 23:54:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 23:54:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-21 23:54:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 23:54:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 23:54:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 23:54:48,084 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 23:54:48,085 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 23:54:48,446 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 23:54:48,447 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-21 23:54:48,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:54:48 BoogieIcfgContainer [2020-08-21 23:54:48,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 23:54:48,452 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 23:54:48,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 23:54:48,456 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 23:54:48,456 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 11:54:47" (1/3) ... [2020-08-21 23:54:48,457 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9428ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:54:48, skipping insertion in model container [2020-08-21 23:54:48,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 11:54:47" (2/3) ... [2020-08-21 23:54:48,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@9428ff8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 11:54:48, skipping insertion in model container [2020-08-21 23:54:48,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 11:54:48" (3/3) ... [2020-08-21 23:54:48,459 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-21 23:54:48,470 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 23:54:48,478 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 23:54:48,493 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 23:54:48,518 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 23:54:48,518 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 23:54:48,518 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 23:54:48,518 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 23:54:48,519 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 23:54:48,519 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 23:54:48,519 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 23:54:48,519 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 23:54:48,537 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-21 23:54:48,543 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 23:54:48,544 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:48,545 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:54:48,545 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:48,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:48,550 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-08-21 23:54:48,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:48,557 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1352345939] [2020-08-21 23:54:48,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:48,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:48,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:54:48,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:48,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:54:48,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:48,771 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 23:54:48,774 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1352345939] [2020-08-21 23:54:48,778 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:54:48,778 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-21 23:54:48,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [270797772] [2020-08-21 23:54:48,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-21 23:54:48,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:54:48,798 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-21 23:54:48,799 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-21 23:54:48,801 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-08-21 23:54:48,973 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:54:48,973 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-08-21 23:54:48,974 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-21 23:54:48,975 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-21 23:54:48,976 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:54:48,985 INFO L225 Difference]: With dead ends: 82 [2020-08-21 23:54:48,985 INFO L226 Difference]: Without dead ends: 41 [2020-08-21 23:54:48,989 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 23:54:49,008 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-21 23:54:49,030 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-21 23:54:49,032 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-21 23:54:49,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-08-21 23:54:49,036 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-08-21 23:54:49,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:54:49,036 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-08-21 23:54:49,037 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-21 23:54:49,037 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-08-21 23:54:49,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-21 23:54:49,038 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:49,038 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:54:49,039 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 23:54:49,039 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:49,040 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:49,040 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-08-21 23:54:49,040 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:49,041 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2146898100] [2020-08-21 23:54:49,041 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:49,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:49,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-21 23:54:49,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:49,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-21 23:54:49,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 23:54:49,164 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 23:54:49,165 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2146898100] [2020-08-21 23:54:49,165 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-21 23:54:49,166 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-21 23:54:49,166 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1288346430] [2020-08-21 23:54:49,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-21 23:54:49,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-21 23:54:49,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-21 23:54:49,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-21 23:54:49,169 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-08-21 23:54:49,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-21 23:54:49,383 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-08-21 23:54:49,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-21 23:54:49,384 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-21 23:54:49,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-21 23:54:49,388 INFO L225 Difference]: With dead ends: 83 [2020-08-21 23:54:49,388 INFO L226 Difference]: Without dead ends: 57 [2020-08-21 23:54:49,390 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 23:54:49,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-21 23:54:49,404 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-08-21 23:54:49,405 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-21 23:54:49,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-21 23:54:49,407 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-08-21 23:54:49,407 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-21 23:54:49,407 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-21 23:54:49,407 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-21 23:54:49,408 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-21 23:54:49,409 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-21 23:54:49,409 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 23:54:49,410 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-21 23:54:49,410 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-21 23:54:49,410 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 23:54:49,410 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 23:54:49,411 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-08-21 23:54:49,411 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 23:54:49,411 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1755156720] [2020-08-21 23:54:49,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 23:54:49,479 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-21 23:54:49,480 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-21 23:54:49,480 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 23:54:49,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-21 23:54:49,515 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 23:54:49,519 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 11:54:49 BoogieIcfgContainer [2020-08-21 23:54:49,527 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 23:54:49,532 INFO L168 Benchmark]: Toolchain (without parser) took 2151.96 ms. Allocated memory was 140.5 MB in the beginning and 234.4 MB in the end (delta: 93.8 MB). Free memory was 102.4 MB in the beginning and 202.2 MB in the end (delta: -99.8 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:49,533 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-21 23:54:49,535 INFO L168 Benchmark]: CACSL2BoogieTranslator took 564.53 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 182.9 MB in the end (delta: -80.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:49,536 INFO L168 Benchmark]: Boogie Preprocessor took 70.80 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:49,539 INFO L168 Benchmark]: RCFGBuilder took 435.70 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 160.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:49,541 INFO L168 Benchmark]: TraceAbstraction took 1075.13 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 159.5 MB in the beginning and 202.2 MB in the end (delta: -42.7 MB). Peak memory consumption was 75.3 MB. Max. memory is 7.1 GB. [2020-08-21 23:54:49,551 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 140.5 MB. Free memory was 120.8 MB in the beginning and 120.6 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 564.53 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 102.2 MB in the beginning and 182.9 MB in the end (delta: -80.7 MB). Peak memory consumption was 22.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 70.80 ms. Allocated memory is still 203.9 MB. Free memory was 182.9 MB in the beginning and 180.2 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 435.70 ms. Allocated memory is still 203.9 MB. Free memory was 180.2 MB in the beginning and 160.1 MB in the end (delta: 20.1 MB). Peak memory consumption was 20.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1075.13 ms. Allocated memory was 203.9 MB in the beginning and 234.4 MB in the end (delta: 30.4 MB). Free memory was 159.5 MB in the beginning and 202.2 MB in the end (delta: -42.7 MB). Peak memory consumption was 75.3 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