/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 --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --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/condgf.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:48:55,826 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:48:55,830 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:48:55,857 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:48:55,857 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:48:55,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:48:55,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:48:55,862 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:48:55,864 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:48:55,865 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:48:55,866 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:48:55,867 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:48:55,867 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:48:55,869 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:48:55,870 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:48:55,871 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:48:55,872 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:48:55,873 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:48:55,876 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:48:55,878 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:48:55,880 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:48:55,881 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:48:55,882 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:48:55,884 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:48:55,886 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:48:55,888 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:48:55,888 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:48:55,889 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:48:55,890 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:48:55,891 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:48:55,891 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:48:55,892 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:48:55,893 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:48:55,894 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:48:55,895 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:48:55,896 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:48:55,897 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:48:55,897 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:48:55,897 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:48:55,898 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:48:55,899 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:48:55,900 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 [2020-09-24 21:48:55,927 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:48:55,928 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:48:55,929 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:48:55,929 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:48:55,929 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:48:55,930 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:48:55,930 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:48:55,930 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:48:55,930 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:48:55,930 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:48:55,930 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:48:55,931 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:48:55,931 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:48:55,931 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:48:55,931 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:48:55,931 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:48:55,932 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:48:55,932 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:48:55,932 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:48:55,932 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:48:55,932 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:48:55,933 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:48:55,933 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:48:55,933 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:48:55,933 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:48:55,933 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:48:55,934 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:48:55,934 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:48:55,934 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:48:55,934 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.rcfgbuilder: Size of a code block -> SingleStatement 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 -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:48:56,362 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:48:56,387 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:48:56,391 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:48:56,395 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:48:56,397 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:48:56,398 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/array-fpi/condgf.c [2020-09-24 21:48:56,487 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d938a4dc/b6928e899dc740fcade44f89fdc549e9/FLAGae62ec15c [2020-09-24 21:48:57,025 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:48:57,026 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/array-fpi/condgf.c [2020-09-24 21:48:57,036 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d938a4dc/b6928e899dc740fcade44f89fdc549e9/FLAGae62ec15c [2020-09-24 21:48:57,362 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/3d938a4dc/b6928e899dc740fcade44f89fdc549e9 [2020-09-24 21:48:57,377 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:48:57,385 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:48:57,390 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:57,390 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:48:57,394 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:48:57,395 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,399 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1850e0e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57, skipping insertion in model container [2020-09-24 21:48:57,400 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,410 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:48:57,437 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:48:57,659 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:57,670 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:48:57,697 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:48:57,716 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:48:57,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57 WrapperNode [2020-09-24 21:48:57,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:48:57,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:48:57,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:48:57,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:48:57,815 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,816 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,825 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,826 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,840 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,847 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,849 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (1/1) ... [2020-09-24 21:48:57,851 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:48:57,852 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:48:57,852 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:48:57,852 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:48:57,853 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (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 [2020-09-24 21:48:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:48:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:48:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-09-24 21:48:57,928 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-24 21:48:57,929 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:48:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:48:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-24 21:48:57,929 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-09-24 21:48:57,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-24 21:48:57,930 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:48:57,931 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-24 21:48:57,931 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:48:57,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 21:48:57,931 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-24 21:48:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 21:48:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 21:48:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 21:48:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:48:57,932 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:48:58,250 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:48:58,251 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-24 21:48:58,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:58 BoogieIcfgContainer [2020-09-24 21:48:58,256 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:48:58,258 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:48:58,258 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:48:58,262 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:48:58,262 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:48:57" (1/3) ... [2020-09-24 21:48:58,263 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcbbb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:58, skipping insertion in model container [2020-09-24 21:48:58,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:48:57" (2/3) ... [2020-09-24 21:48:58,264 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3dcbbb0c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:48:58, skipping insertion in model container [2020-09-24 21:48:58,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:48:58" (3/3) ... [2020-09-24 21:48:58,267 INFO L109 eAbstractionObserver]: Analyzing ICFG condgf.c [2020-09-24 21:48:58,280 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:48:58,290 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:48:58,313 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:48:58,345 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:48:58,345 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:48:58,346 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:48:58,346 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:48:58,346 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:48:58,346 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:48:58,346 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:48:58,346 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:48:58,371 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states. [2020-09-24 21:48:58,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 21:48:58,379 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:58,380 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] [2020-09-24 21:48:58,380 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:58,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:58,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1924334027, now seen corresponding path program 1 times [2020-09-24 21:48:58,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:58,396 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [372220812] [2020-09-24 21:48:58,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:58,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:58,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:58,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:59,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:59,307 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 21:48:59,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 21:48:59,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 761 [2020-09-24 21:48:59,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:48:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:48:59,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 21:48:59,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 8 [2020-09-24 21:48:59,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:48:59,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:59,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:59,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:59,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:48:59,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:59,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:48:59,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:59,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:48:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:59,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:48:59,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:59,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:48:59,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:59,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:48:59,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:48:59,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:48:59,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:48:59,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 21:48:59,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:48:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:48:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:48:59,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:48:59,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:48:59,447 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:48:59,448 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [372220812] [2020-09-24 21:48:59,450 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:48:59,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 21:48:59,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1156862999] [2020-09-24 21:48:59,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 21:48:59,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:48:59,482 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 21:48:59,483 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:48:59,486 INFO L87 Difference]: Start difference. First operand 76 states. Second operand 5 states. [2020-09-24 21:48:59,796 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:48:59,796 INFO L93 Difference]: Finished difference Result 143 states and 171 transitions. [2020-09-24 21:48:59,797 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 21:48:59,799 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 21:48:59,799 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:48:59,810 INFO L225 Difference]: With dead ends: 143 [2020-09-24 21:48:59,811 INFO L226 Difference]: Without dead ends: 71 [2020-09-24 21:48:59,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 21:48:59,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-24 21:48:59,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 70. [2020-09-24 21:48:59,868 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-24 21:48:59,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 74 transitions. [2020-09-24 21:48:59,872 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 74 transitions. Word has length 35 [2020-09-24 21:48:59,873 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:48:59,873 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 74 transitions. [2020-09-24 21:48:59,873 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 21:48:59,873 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 74 transitions. [2020-09-24 21:48:59,875 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 21:48:59,876 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:48:59,876 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:48:59,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:48:59,876 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:48:59,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:48:59,877 INFO L82 PathProgramCache]: Analyzing trace with hash -269448694, now seen corresponding path program 1 times [2020-09-24 21:48:59,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:48:59,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669976497] [2020-09-24 21:48:59,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:48:59,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:48:59,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:00,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:00,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:00,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:01,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:02,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:02,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:03,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:03,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:03,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:04,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:04,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:04,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 21:49:04,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 21:49:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-09-24 21:49:04,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 21:49:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 21:49:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 21:49:04,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:05,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:49:05,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:05,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:05,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:05,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 21:49:05,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:05,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 21:49:05,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:05,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 21:49:05,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:05,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 21:49:05,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:05,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-24 21:49:05,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:49:05,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:49:05,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:49:05,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-24 21:49:05,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:49:05,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 21:49:05,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:49:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:49:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:49:05,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 21:49:05,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:49:05,987 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:49:05,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669976497] [2020-09-24 21:49:05,988 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:49:05,988 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-24 21:49:05,989 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2118003963] [2020-09-24 21:49:05,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-24 21:49:05,991 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:49:05,991 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-24 21:49:05,992 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=259, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:49:05,992 INFO L87 Difference]: Start difference. First operand 70 states and 74 transitions. Second operand 18 states. [2020-09-24 21:49:06,476 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 44 [2020-09-24 21:49:06,673 WARN L193 SmtUtils]: Spent 144.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 39 [2020-09-24 21:49:07,152 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 48 [2020-09-24 21:49:07,342 WARN L193 SmtUtils]: Spent 149.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 53 [2020-09-24 21:49:08,417 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:49:08,417 INFO L93 Difference]: Finished difference Result 122 states and 131 transitions. [2020-09-24 21:49:08,417 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-24 21:49:08,418 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 59 [2020-09-24 21:49:08,418 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:49:08,420 INFO L225 Difference]: With dead ends: 122 [2020-09-24 21:49:08,420 INFO L226 Difference]: Without dead ends: 94 [2020-09-24 21:49:08,422 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 218 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=280, Invalid=1052, Unknown=0, NotChecked=0, Total=1332 [2020-09-24 21:49:08,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-24 21:49:08,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 90. [2020-09-24 21:49:08,441 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 90 states. [2020-09-24 21:49:08,448 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 96 transitions. [2020-09-24 21:49:08,448 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 96 transitions. Word has length 59 [2020-09-24 21:49:08,448 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:49:08,448 INFO L479 AbstractCegarLoop]: Abstraction has 90 states and 96 transitions. [2020-09-24 21:49:08,449 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-24 21:49:08,449 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 96 transitions. [2020-09-24 21:49:08,450 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-24 21:49:08,450 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:49:08,451 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:49:08,451 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:49:08,451 INFO L427 AbstractCegarLoop]: === Iteration 3 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:49:08,451 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:49:08,451 INFO L82 PathProgramCache]: Analyzing trace with hash 1693383620, now seen corresponding path program 1 times [2020-09-24 21:49:08,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:49:08,453 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [481474883] [2020-09-24 21:49:08,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:49:08,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 21:49:08,482 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 21:49:08,482 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 21:49:08,488 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:49:08,528 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 09:49:08 BoogieIcfgContainer [2020-09-24 21:49:08,528 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 21:49:08,531 INFO L168 Benchmark]: Toolchain (without parser) took 11149.73 ms. Allocated memory was 138.9 MB in the beginning and 304.6 MB in the end (delta: 165.7 MB). Free memory was 101.6 MB in the beginning and 117.2 MB in the end (delta: -15.6 MB). Peak memory consumption was 150.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:08,537 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-09-24 21:49:08,538 INFO L168 Benchmark]: CACSL2BoogieTranslator took 327.01 ms. Allocated memory is still 138.9 MB. Free memory was 100.9 MB in the beginning and 90.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:08,539 INFO L168 Benchmark]: Boogie Preprocessor took 134.36 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.3 MB in the beginning and 179.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:08,542 INFO L168 Benchmark]: RCFGBuilder took 404.50 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 158.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:08,543 INFO L168 Benchmark]: TraceAbstraction took 10269.94 ms. Allocated memory was 201.9 MB in the beginning and 304.6 MB in the end (delta: 102.8 MB). Free memory was 157.4 MB in the beginning and 117.2 MB in the end (delta: 40.2 MB). Peak memory consumption was 143.0 MB. Max. memory is 7.1 GB. [2020-09-24 21:49:08,549 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.9 MB. Free memory was 120.4 MB in the beginning and 120.2 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 327.01 ms. Allocated memory is still 138.9 MB. Free memory was 100.9 MB in the beginning and 90.3 MB in the end (delta: 10.6 MB). Peak memory consumption was 10.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 134.36 ms. Allocated memory was 138.9 MB in the beginning and 201.9 MB in the end (delta: 62.9 MB). Free memory was 90.3 MB in the beginning and 179.0 MB in the end (delta: -88.7 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 404.50 ms. Allocated memory is still 201.9 MB. Free memory was 179.0 MB in the beginning and 158.1 MB in the end (delta: 20.9 MB). Peak memory consumption was 20.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10269.94 ms. Allocated memory was 201.9 MB in the beginning and 304.6 MB in the end (delta: 102.8 MB). Free memory was 157.4 MB in the beginning and 117.2 MB in the end (delta: 40.2 MB). Peak memory consumption was 143.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 13]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L17] int N; [L21] N = __VERIFIER_nondet_int() [L22] COND FALSE !(N <= 0) [L23] CALL assume_abort_if_not(N <= 2147483647/sizeof(int)) [L11] COND FALSE !(!cond) [L23] RET assume_abort_if_not(N <= 2147483647/sizeof(int)) [L25] int i; [L26] long long sum[1]; [L27] int *a = malloc(sizeof(int)*N); [L29] sum[0] = 0 [L30] i=0 [L30] COND TRUE i