/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/reducercommutativity/rangesum.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:54:27,824 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:54:27,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:54:27,860 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:54:27,860 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:54:27,861 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:54:27,863 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:54:27,870 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:54:27,872 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:54:27,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:54:27,875 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:54:27,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:54:27,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:54:27,886 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:54:27,887 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:54:27,889 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:54:27,890 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:54:27,891 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:54:27,893 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:54:27,895 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:54:27,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:54:27,901 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:54:27,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:54:27,904 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:54:27,910 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:54:27,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:54:27,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:54:27,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:54:27,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:54:27,919 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:54:27,919 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:54:27,920 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:54:27,921 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:54:27,922 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:54:27,924 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:54:27,924 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:54:27,925 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:54:27,925 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:54:27,925 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:54:27,926 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:54:27,928 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:54:27,929 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 22:54:27,989 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:54:27,989 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:54:27,992 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:54:27,992 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:54:27,992 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:54:27,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:54:27,993 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:54:27,993 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:54:27,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:54:27,994 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:54:27,995 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:54:27,995 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:54:27,995 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:54:27,996 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:54:27,996 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:54:27,996 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:54:27,996 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:54:27,997 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:54:27,997 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:54:27,997 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:54:27,997 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:54:27,997 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:54:27,998 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:54:27,998 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:54:27,998 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:54:27,998 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:54:27,998 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:54:27,999 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:54:27,999 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:54:27,999 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:54:28,625 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:54:28,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:54:28,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:54:28,661 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:54:28,662 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:54:28,663 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum.i [2020-09-24 22:54:28,758 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc2b8c4e3/a7fc1654b2ce4f0fa11edc5e37b897b6/FLAGbb91fff77 [2020-09-24 22:54:29,310 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:54:29,311 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/rangesum.i [2020-09-24 22:54:29,322 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc2b8c4e3/a7fc1654b2ce4f0fa11edc5e37b897b6/FLAGbb91fff77 [2020-09-24 22:54:29,645 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dc2b8c4e3/a7fc1654b2ce4f0fa11edc5e37b897b6 [2020-09-24 22:54:29,658 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:54:29,663 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:54:29,664 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:29,664 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:54:29,669 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:54:29,670 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:29" (1/1) ... [2020-09-24 22:54:29,675 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3cc704b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:29, skipping insertion in model container [2020-09-24 22:54:29,675 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:54:29" (1/1) ... [2020-09-24 22:54:29,684 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:54:29,712 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:54:29,971 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:29,984 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:54:30,022 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:54:30,043 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:54:30,043 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30 WrapperNode [2020-09-24 22:54:30,043 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:54:30,044 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:54:30,045 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:54:30,045 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:54:30,139 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,139 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,151 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,152 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,162 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,169 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,171 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (1/1) ... [2020-09-24 22:54:30,174 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:54:30,175 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:54:30,175 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:54:30,175 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:54:30,177 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (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 22:54:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:54:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:54:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-09-24 22:54:30,279 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-09-24 22:54:30,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:54:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:54:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:54:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-09-24 22:54:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-24 22:54:30,280 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-09-24 22:54:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-24 22:54:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:54:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-09-24 22:54:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-24 22:54:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:54:30,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:54:30,719 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:54:30,719 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-24 22:54:30,725 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:30 BoogieIcfgContainer [2020-09-24 22:54:30,725 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:54:30,727 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:54:30,727 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:54:30,731 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:54:30,731 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:54:29" (1/3) ... [2020-09-24 22:54:30,732 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8eee2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:30, skipping insertion in model container [2020-09-24 22:54:30,732 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:54:30" (2/3) ... [2020-09-24 22:54:30,733 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5c8eee2a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:54:30, skipping insertion in model container [2020-09-24 22:54:30,733 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:54:30" (3/3) ... [2020-09-24 22:54:30,735 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum.i [2020-09-24 22:54:30,748 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:54:30,758 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:54:30,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:54:30,809 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:54:30,809 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:54:30,809 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:54:30,809 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:54:30,810 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:54:30,810 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:54:30,810 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:54:30,810 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:54:30,832 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states. [2020-09-24 22:54:30,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 85 [2020-09-24 22:54:30,843 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:54:30,844 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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 22:54:30,845 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:54:30,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:54:30,851 INFO L82 PathProgramCache]: Analyzing trace with hash -657395557, now seen corresponding path program 1 times [2020-09-24 22:54:30,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:54:30,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102144052] [2020-09-24 22:54:30,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:54:31,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:54:31,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:54:31,114 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102144052] [2020-09-24 22:54:31,115 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-09-24 22:54:31,115 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:54:31,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-09-24 22:54:31,116 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-09-24 22:54:31,117 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 22:54:31,126 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:54:31,153 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-09-24 22:54:31,153 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 10:54:31 BoogieIcfgContainer [2020-09-24 22:54:31,153 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 22:54:31,157 INFO L168 Benchmark]: Toolchain (without parser) took 1495.49 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 102.3 MB in the beginning and 138.6 MB in the end (delta: -36.3 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:31,157 INFO L168 Benchmark]: CDTParser took 0.23 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). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 22:54:31,158 INFO L168 Benchmark]: CACSL2BoogieTranslator took 379.98 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 91.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:31,160 INFO L168 Benchmark]: Boogie Preprocessor took 130.23 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 179.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:31,161 INFO L168 Benchmark]: RCFGBuilder took 550.53 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.1 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:31,162 INFO L168 Benchmark]: TraceAbstraction took 426.52 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 138.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. [2020-09-24 22:54:31,166 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 139.5 MB. Free memory was 121.0 MB in the beginning and 120.8 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 379.98 ms. Allocated memory is still 139.5 MB. Free memory was 101.7 MB in the beginning and 91.2 MB in the end (delta: 10.5 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 130.23 ms. Allocated memory was 139.5 MB in the beginning and 201.9 MB in the end (delta: 62.4 MB). Free memory was 91.2 MB in the beginning and 179.1 MB in the end (delta: -87.9 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 550.53 ms. Allocated memory is still 201.9 MB. Free memory was 179.1 MB in the beginning and 156.1 MB in the end (delta: 23.0 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 426.52 ms. Allocated memory is still 201.9 MB. Free memory was 155.4 MB in the beginning and 138.6 MB in the end (delta: 16.8 MB). Peak memory consumption was 16.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 53]: 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: [L4] int N; [L32] N = __VERIFIER_nondet_int() [L33] COND TRUE N > 1 [L34] int x[N]; [L35] CALL init_nondet(x) [L6] int i; [L7] i = 0 [L35] RET init_nondet(x) [L36] int temp; [L37] int ret; [L38] int ret2; [L39] int ret5; [L41] CALL, EXPR rangesum(x) [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 [L18] COND FALSE !(i < N) [L24] COND TRUE cnt !=0 [L25] return ret / cnt; [L41] RET, EXPR rangesum(x) [L41] ret = rangesum(x) [L43] EXPR x[0] [L43] temp=x[0] [L43] EXPR x[1] [L43] x[0] = x[1] [L43] x[1] = temp [L44] CALL, EXPR rangesum(x) [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 [L18] COND FALSE !(i < N) [L24] COND TRUE cnt !=0 [L25] return ret / cnt; [L44] RET, EXPR rangesum(x) [L44] ret2 = rangesum(x) [L45] EXPR x[0] [L45] temp=x[0] [L46] int i =0 ; [L49] x[N-1] = temp [L50] CALL, EXPR rangesum(x) [L14] int i; [L15] long long ret; [L16] ret = 0 [L17] int cnt = 0; [L18] i = 0 [L18] COND FALSE !(i < N) [L24] COND TRUE cnt !=0 [L25] return ret / cnt; [L50] RET, EXPR rangesum(x) [L50] ret5 = rangesum(x) [L52] COND TRUE ret != ret2 || ret !=ret5 [L53] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 91 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.3s, OverallIterations: 1, TraceHistogramMax: 3, AutomataDifference: 0.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: No data available, PredicateUnifierStatistics: No data available, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=91occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: No data available, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.0s InterpolantComputationTime, 84 NumberOfCodeBlocks, 84 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 0 ConstructedInterpolants, 0 QuantifiedInterpolants, 0 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 0 InterpolantComputations, 0 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...