/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=0.5 --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 [2020-08-22 06:23:54,983 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:23:54,985 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:23:55,010 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:23:55,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:23:55,011 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:23:55,013 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:23:55,014 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:23:55,016 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:23:55,017 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:23:55,020 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:23:55,021 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:23:55,022 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:23:55,024 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:23:55,025 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:23:55,028 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:23:55,029 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:23:55,030 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:23:55,033 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:23:55,036 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:23:55,040 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:23:55,041 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:23:55,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:23:55,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:23:55,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:23:55,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:23:55,051 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:23:55,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:23:55,054 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:23:55,056 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:23:55,056 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:23:55,056 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:23:55,058 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:23:55,058 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:23:55,060 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:23:55,060 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:23:55,061 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:23:55,061 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:23:55,061 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:23:55,062 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:23:55,064 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:23:55,064 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 06:23:55,117 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:23:55,118 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:23:55,122 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:23:55,123 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:23:55,123 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:23:55,123 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:23:55,123 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:23:55,124 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:23:55,124 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:23:55,124 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:23:55,124 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:23:55,124 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:23:55,125 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:23:55,125 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:23:55,125 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:23:55,125 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:23:55,125 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:23:55,126 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:23:55,126 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:23:55,126 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:23:55,126 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:23:55,126 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:23:55,127 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:23:55,128 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:23:55,128 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:23:55,128 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:23:55,128 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:23:55,128 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:23:55,129 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:23:55,129 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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-08-22 06:23:55,478 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:23:55,490 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:23:55,496 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:23:55,498 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:23:55,499 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:23:55,500 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 06:23:55,561 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/051a8a3ca/08d03fb8bfdc41ff9504a131880d3d2b/FLAGe12172839 [2020-08-22 06:23:55,991 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:23:55,991 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/ss2f.c [2020-08-22 06:23:55,998 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/051a8a3ca/08d03fb8bfdc41ff9504a131880d3d2b/FLAGe12172839 [2020-08-22 06:23:56,355 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/051a8a3ca/08d03fb8bfdc41ff9504a131880d3d2b [2020-08-22 06:23:56,366 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:23:56,368 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:23:56,369 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:56,369 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:23:56,373 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:23:56,374 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,377 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@36d8e8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56, skipping insertion in model container [2020-08-22 06:23:56,378 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,386 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:23:56,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:23:56,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:56,613 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:23:56,637 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:56,655 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:23:56,655 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56 WrapperNode [2020-08-22 06:23:56,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:56,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:23:56,658 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:23:56,658 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:23:56,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,749 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,758 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,758 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,768 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,776 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,778 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (1/1) ... [2020-08-22 06:23:56,781 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:23:56,781 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:23:56,781 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:23:56,781 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:23:56,782 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (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 06:23:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:23:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:23:56,843 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:23:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:23:56,844 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:23:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:23:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:23:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:23:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:23:56,844 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:23:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:23:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:23:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:23:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:23:56,845 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:23:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:23:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:23:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:23:56,846 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:23:57,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:23:57,157 INFO L295 CfgBuilder]: Removed 7 assume(true) statements. [2020-08-22 06:23:57,162 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:57 BoogieIcfgContainer [2020-08-22 06:23:57,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:23:57,163 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:23:57,163 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:23:57,167 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:23:57,167 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:23:56" (1/3) ... [2020-08-22 06:23:57,168 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450a5e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:57, skipping insertion in model container [2020-08-22 06:23:57,168 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:56" (2/3) ... [2020-08-22 06:23:57,169 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@450a5e91 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:57, skipping insertion in model container [2020-08-22 06:23:57,169 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:57" (3/3) ... [2020-08-22 06:23:57,171 INFO L109 eAbstractionObserver]: Analyzing ICFG ss2f.c [2020-08-22 06:23:57,183 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:23:57,191 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:23:57,211 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:23:57,248 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:23:57,248 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:23:57,249 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:23:57,249 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:23:57,249 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:23:57,249 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:23:57,249 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:23:57,249 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:23:57,275 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states. [2020-08-22 06:23:57,284 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 06:23:57,284 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:57,285 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] [2020-08-22 06:23:57,286 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:57,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:57,293 INFO L82 PathProgramCache]: Analyzing trace with hash -96589013, now seen corresponding path program 1 times [2020-08-22 06:23:57,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:57,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1066635193] [2020-08-22 06:23:57,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:57,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:57,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:57,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:57,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:57,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:57,532 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 06:23:57,533 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1066635193] [2020-08-22 06:23:57,535 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:57,535 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:23:57,536 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1621805442] [2020-08-22 06:23:57,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:23:57,545 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:57,560 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:23:57,561 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:23:57,563 INFO L87 Difference]: Start difference. First operand 46 states. Second operand 3 states. [2020-08-22 06:23:57,717 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:57,718 INFO L93 Difference]: Finished difference Result 82 states and 113 transitions. [2020-08-22 06:23:57,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:23:57,720 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2020-08-22 06:23:57,721 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:57,730 INFO L225 Difference]: With dead ends: 82 [2020-08-22 06:23:57,730 INFO L226 Difference]: Without dead ends: 41 [2020-08-22 06:23:57,735 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 06:23:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-08-22 06:23:57,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-08-22 06:23:57,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-08-22 06:23:57,776 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 47 transitions. [2020-08-22 06:23:57,777 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 47 transitions. Word has length 30 [2020-08-22 06:23:57,778 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:57,778 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 47 transitions. [2020-08-22 06:23:57,778 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:23:57,778 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 47 transitions. [2020-08-22 06:23:57,780 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 06:23:57,780 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:57,780 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] [2020-08-22 06:23:57,781 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:23:57,781 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:57,782 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:57,782 INFO L82 PathProgramCache]: Analyzing trace with hash -552343525, now seen corresponding path program 1 times [2020-08-22 06:23:57,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:57,783 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1301380459] [2020-08-22 06:23:57,783 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:57,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:57,902 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:57,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:57,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:57,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:57,919 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 06:23:57,919 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1301380459] [2020-08-22 06:23:57,920 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:57,920 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:23:57,920 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2112281747] [2020-08-22 06:23:57,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:23:57,922 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:57,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:23:57,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:23:57,923 INFO L87 Difference]: Start difference. First operand 41 states and 47 transitions. Second operand 5 states. [2020-08-22 06:23:58,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:58,126 INFO L93 Difference]: Finished difference Result 83 states and 101 transitions. [2020-08-22 06:23:58,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:23:58,127 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 30 [2020-08-22 06:23:58,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:58,130 INFO L225 Difference]: With dead ends: 83 [2020-08-22 06:23:58,131 INFO L226 Difference]: Without dead ends: 57 [2020-08-22 06:23:58,132 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 06:23:58,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-08-22 06:23:58,147 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 47. [2020-08-22 06:23:58,147 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-08-22 06:23:58,148 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 53 transitions. [2020-08-22 06:23:58,149 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 53 transitions. Word has length 30 [2020-08-22 06:23:58,149 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:58,149 INFO L479 AbstractCegarLoop]: Abstraction has 47 states and 53 transitions. [2020-08-22 06:23:58,149 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:23:58,150 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 53 transitions. [2020-08-22 06:23:58,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 06:23:58,151 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:58,152 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] [2020-08-22 06:23:58,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:23:58,152 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:58,152 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:58,153 INFO L82 PathProgramCache]: Analyzing trace with hash 1488976591, now seen corresponding path program 1 times [2020-08-22 06:23:58,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:58,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679092843] [2020-08-22 06:23:58,154 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:58,193 ERROR L271 FreeRefinementEngine]: Caught known exception: Unsupported non-linear arithmetic [2020-08-22 06:23:58,194 WARN L168 FreeRefinementEngine]: Strategy FIXED_PREFERENCES was unsuccessful and could not determine trace feasibility [2020-08-22 06:23:58,194 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:23:58,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:23:58,219 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-22 06:23:58,219 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:23:58 BoogieIcfgContainer [2020-08-22 06:23:58,220 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:23:58,223 INFO L168 Benchmark]: Toolchain (without parser) took 1854.18 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 90.5 MB in the end (delta: 12.4 MB). Peak memory consumption was 74.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:58,224 INFO L168 Benchmark]: CDTParser took 0.73 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. [2020-08-22 06:23:58,225 INFO L168 Benchmark]: CACSL2BoogieTranslator took 288.05 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:58,226 INFO L168 Benchmark]: Boogie Preprocessor took 123.51 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 12.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:58,227 INFO L168 Benchmark]: RCFGBuilder took 381.03 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:58,228 INFO L168 Benchmark]: TraceAbstraction took 1056.47 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 90.5 MB in the end (delta: 67.9 MB). Peak memory consumption was 67.9 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:58,232 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.73 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 MB in the beginning and 120.6 MB in the end (delta: 419.5 kB). Peak memory consumption was 419.5 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 288.05 ms. Allocated memory is still 139.5 MB. Free memory was 102.4 MB in the beginning and 91.4 MB in the end (delta: 11.0 MB). Peak memory consumption was 11.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 123.51 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 12.6 MB. Max. memory is 7.1 GB. * RCFGBuilder took 381.03 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: 21.1 MB). Peak memory consumption was 21.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1056.47 ms. Allocated memory is still 201.9 MB. Free memory was 158.4 MB in the beginning and 90.5 MB in the end (delta: 67.9 MB). Peak memory consumption was 67.9 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