/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/sina1f.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-22 06:23:50,935 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 06:23:50,938 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 06:23:50,962 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 06:23:50,962 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 06:23:50,964 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 06:23:50,965 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 06:23:50,967 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 06:23:50,968 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 06:23:50,969 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 06:23:50,970 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 06:23:50,972 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 06:23:50,972 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 06:23:50,973 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 06:23:50,974 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 06:23:50,975 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 06:23:50,976 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 06:23:50,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 06:23:50,978 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 06:23:50,980 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 06:23:50,981 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 06:23:50,982 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 06:23:50,984 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 06:23:50,984 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 06:23:50,987 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 06:23:50,987 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 06:23:50,987 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 06:23:50,988 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 06:23:50,989 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 06:23:50,989 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 06:23:50,990 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 06:23:50,990 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 06:23:50,991 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 06:23:50,992 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 06:23:50,993 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 06:23:50,993 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 06:23:50,994 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 06:23:50,994 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 06:23:50,994 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 06:23:50,996 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 06:23:50,997 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 06:23:50,998 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 06:23:51,048 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 06:23:51,048 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 06:23:51,049 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-22 06:23:51,050 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-22 06:23:51,050 INFO L138 SettingsManager]: * Use SBE=true [2020-08-22 06:23:51,050 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 06:23:51,050 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 06:23:51,051 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 06:23:51,051 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 06:23:51,051 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 06:23:51,051 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 06:23:51,051 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 06:23:51,051 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 06:23:51,052 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 06:23:51,052 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 06:23:51,052 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 06:23:51,052 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 06:23:51,052 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 06:23:51,053 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-22 06:23:51,056 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 06:23:51,056 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 06:23:51,056 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 06:23:51,057 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 06:23:51,057 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-22 06:23:51,057 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-22 06:23:51,057 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-22 06:23:51,057 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-22 06:23:51,058 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 06:23:51,060 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-22 06:23:51,060 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 06:23:51,397 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 06:23:51,410 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 06:23:51,414 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 06:23:51,416 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 06:23:51,416 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 06:23:51,417 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-22 06:23:51,476 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a37fc058/8408f59000e04d599d6fd02715f5d4a2/FLAGd0a25fd3b [2020-08-22 06:23:51,964 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 06:23:51,964 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/sina1f.c [2020-08-22 06:23:51,971 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a37fc058/8408f59000e04d599d6fd02715f5d4a2/FLAGd0a25fd3b [2020-08-22 06:23:52,381 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7a37fc058/8408f59000e04d599d6fd02715f5d4a2 [2020-08-22 06:23:52,389 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 06:23:52,391 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 06:23:52,392 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:52,392 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 06:23:52,396 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 06:23:52,397 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,400 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a32a894 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52, skipping insertion in model container [2020-08-22 06:23:52,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,408 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 06:23:52,426 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 06:23:52,618 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:52,628 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 06:23:52,645 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 06:23:52,661 INFO L208 MainTranslator]: Completed translation [2020-08-22 06:23:52,662 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52 WrapperNode [2020-08-22 06:23:52,662 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 06:23:52,663 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 06:23:52,663 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 06:23:52,663 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 06:23:52,749 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,751 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,763 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,763 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,783 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,791 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (1/1) ... [2020-08-22 06:23:52,795 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 06:23:52,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 06:23:52,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 06:23:52,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 06:23:52,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (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 06:23:52,857 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 06:23:52,858 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 06:23:52,858 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-08-22 06:23:52,858 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-08-22 06:23:52,858 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 06:23:52,859 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 06:23:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 06:23:52,860 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-08-22 06:23:52,861 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-08-22 06:23:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 06:23:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 06:23:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 06:23:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-22 06:23:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 06:23:52,862 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 06:23:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 06:23:52,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 06:23:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 06:23:52,864 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 06:23:53,190 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 06:23:53,190 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 06:23:53,195 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:53 BoogieIcfgContainer [2020-08-22 06:23:53,195 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 06:23:53,196 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 06:23:53,197 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 06:23:53,200 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 06:23:53,200 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 06:23:52" (1/3) ... [2020-08-22 06:23:53,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f427675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:53, skipping insertion in model container [2020-08-22 06:23:53,201 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 06:23:52" (2/3) ... [2020-08-22 06:23:53,201 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f427675 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 06:23:53, skipping insertion in model container [2020-08-22 06:23:53,202 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 06:23:53" (3/3) ... [2020-08-22 06:23:53,203 INFO L109 eAbstractionObserver]: Analyzing ICFG sina1f.c [2020-08-22 06:23:53,214 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 06:23:53,221 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 06:23:53,235 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 06:23:53,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 06:23:53,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 06:23:53,260 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-22 06:23:53,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 06:23:53,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 06:23:53,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 06:23:53,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 06:23:53,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 06:23:53,282 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states. [2020-08-22 06:23:53,289 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 06:23:53,289 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:53,291 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] [2020-08-22 06:23:53,291 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:53,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:53,298 INFO L82 PathProgramCache]: Analyzing trace with hash -1314760119, now seen corresponding path program 1 times [2020-08-22 06:23:53,306 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:53,307 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1498318211] [2020-08-22 06:23:53,307 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:53,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:53,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:53,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:53,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:53,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:53,501 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 06:23:53,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1498318211] [2020-08-22 06:23:53,504 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:53,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 06:23:53,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391124022] [2020-08-22 06:23:53,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 06:23:53,511 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:53,521 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 06:23:53,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 06:23:53,524 INFO L87 Difference]: Start difference. First operand 34 states. Second operand 3 states. [2020-08-22 06:23:53,652 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:53,652 INFO L93 Difference]: Finished difference Result 58 states and 73 transitions. [2020-08-22 06:23:53,653 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 06:23:53,655 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 22 [2020-08-22 06:23:53,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:53,665 INFO L225 Difference]: With dead ends: 58 [2020-08-22 06:23:53,665 INFO L226 Difference]: Without dead ends: 29 [2020-08-22 06:23:53,669 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 06:23:53,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-08-22 06:23:53,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-08-22 06:23:53,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-08-22 06:23:53,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 31 transitions. [2020-08-22 06:23:53,714 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 31 transitions. Word has length 22 [2020-08-22 06:23:53,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:53,714 INFO L479 AbstractCegarLoop]: Abstraction has 29 states and 31 transitions. [2020-08-22 06:23:53,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 06:23:53,715 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 31 transitions. [2020-08-22 06:23:53,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-08-22 06:23:53,716 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:53,716 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] [2020-08-22 06:23:53,716 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 06:23:53,717 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:53,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:53,717 INFO L82 PathProgramCache]: Analyzing trace with hash -1901566133, now seen corresponding path program 1 times [2020-08-22 06:23:53,717 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:53,718 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [76446789] [2020-08-22 06:23:53,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:53,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:53,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 06:23:53,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:53,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-08-22 06:23:53,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 06:23:53,843 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 06:23:53,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [76446789] [2020-08-22 06:23:53,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 06:23:53,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 06:23:53,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [561440094] [2020-08-22 06:23:53,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 06:23:53,847 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 06:23:53,847 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 06:23:53,847 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-08-22 06:23:53,848 INFO L87 Difference]: Start difference. First operand 29 states and 31 transitions. Second operand 5 states. [2020-08-22 06:23:53,989 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 06:23:53,989 INFO L93 Difference]: Finished difference Result 51 states and 57 transitions. [2020-08-22 06:23:53,990 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-08-22 06:23:53,990 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2020-08-22 06:23:53,990 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 06:23:53,993 INFO L225 Difference]: With dead ends: 51 [2020-08-22 06:23:53,993 INFO L226 Difference]: Without dead ends: 37 [2020-08-22 06:23:53,994 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 06:23:53,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-08-22 06:23:54,006 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 31. [2020-08-22 06:23:54,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-08-22 06:23:54,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 33 transitions. [2020-08-22 06:23:54,008 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 33 transitions. Word has length 22 [2020-08-22 06:23:54,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 06:23:54,008 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 33 transitions. [2020-08-22 06:23:54,009 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 06:23:54,009 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 33 transitions. [2020-08-22 06:23:54,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 06:23:54,010 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 06:23:54,010 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] [2020-08-22 06:23:54,010 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 06:23:54,010 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 06:23:54,011 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 06:23:54,011 INFO L82 PathProgramCache]: Analyzing trace with hash -69884793, now seen corresponding path program 1 times [2020-08-22 06:23:54,011 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 06:23:54,011 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862500134] [2020-08-22 06:23:54,012 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 06:23:54,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 06:23:54,057 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 06:23:54,064 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 06:23:54,077 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 06:23:54,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 06:23:54 BoogieIcfgContainer [2020-08-22 06:23:54,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 06:23:54,106 INFO L168 Benchmark]: Toolchain (without parser) took 1713.69 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 102.9 MB in the beginning and 105.9 MB in the end (delta: -3.1 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:54,107 INFO L168 Benchmark]: CDTParser took 0.30 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 06:23:54,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 270.37 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:54,109 INFO L168 Benchmark]: Boogie Preprocessor took 132.31 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 91.9 MB in the beginning and 178.6 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:54,110 INFO L168 Benchmark]: RCFGBuilder took 399.72 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 161.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:54,111 INFO L168 Benchmark]: TraceAbstraction took 906.56 ms. Allocated memory is still 201.3 MB. Free memory was 161.1 MB in the beginning and 106.6 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 MB. Max. memory is 7.1 GB. [2020-08-22 06:23:54,116 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.30 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: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 270.37 ms. Allocated memory is still 139.5 MB. Free memory was 102.6 MB in the beginning and 91.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 132.31 ms. Allocated memory was 139.5 MB in the beginning and 201.3 MB in the end (delta: 61.9 MB). Free memory was 91.9 MB in the beginning and 178.6 MB in the end (delta: -86.7 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 399.72 ms. Allocated memory is still 201.3 MB. Free memory was 178.6 MB in the beginning and 161.8 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * TraceAbstraction took 906.56 ms. Allocated memory is still 201.3 MB. Free memory was 161.1 MB in the beginning and 106.6 MB in the end (delta: 54.6 MB). Peak memory consumption was 54.6 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] int sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 1 [L30] i=0 [L30] COND TRUE i