/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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/rangesum05.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-177f698 [2020-08-21 16:38:39,494 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-21 16:38:39,497 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-21 16:38:39,520 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-21 16:38:39,521 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-21 16:38:39,522 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-21 16:38:39,523 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-21 16:38:39,525 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-21 16:38:39,527 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-21 16:38:39,528 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-21 16:38:39,529 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-21 16:38:39,530 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-21 16:38:39,530 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-21 16:38:39,531 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-21 16:38:39,532 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-21 16:38:39,533 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-21 16:38:39,534 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-21 16:38:39,535 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-21 16:38:39,536 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-21 16:38:39,538 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-21 16:38:39,540 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-21 16:38:39,541 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-21 16:38:39,542 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-21 16:38:39,542 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-21 16:38:39,545 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-21 16:38:39,545 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-21 16:38:39,545 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-21 16:38:39,546 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-21 16:38:39,547 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-21 16:38:39,548 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-21 16:38:39,548 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-21 16:38:39,549 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-21 16:38:39,549 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-21 16:38:39,550 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-21 16:38:39,551 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-21 16:38:39,551 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-21 16:38:39,552 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-21 16:38:39,552 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-21 16:38:39,552 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-21 16:38:39,553 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-21 16:38:39,554 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-21 16:38:39,555 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-08-21 16:38:39,601 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-21 16:38:39,602 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-21 16:38:39,603 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-08-21 16:38:39,604 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-08-21 16:38:39,604 INFO L138 SettingsManager]: * Use SBE=true [2020-08-21 16:38:39,604 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-21 16:38:39,605 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-21 16:38:39,606 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-21 16:38:39,606 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-21 16:38:39,606 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-21 16:38:39,606 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-21 16:38:39,607 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-21 16:38:39,608 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-21 16:38:39,608 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-21 16:38:39,608 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-21 16:38:39,610 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-21 16:38:39,610 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-21 16:38:39,610 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-21 16:38:39,611 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-08-21 16:38:39,611 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-21 16:38:39,611 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-21 16:38:39,611 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:38:39,612 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-21 16:38:39,612 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-08-21 16:38:39,612 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-08-21 16:38:39,612 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-08-21 16:38:39,612 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-08-21 16:38:39,613 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-21 16:38:39,613 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-08-21 16:38:39,613 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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> enumeration-timeout=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-08-21 16:38:39,935 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-21 16:38:39,956 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-21 16:38:39,959 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-21 16:38:39,961 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-21 16:38:39,962 INFO L275 PluginConnector]: CDTParser initialized [2020-08-21 16:38:39,962 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-08-21 16:38:40,033 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b0c2ef05/e72ceac9a9b840539b4b2981810163ae/FLAG6eeef22e7 [2020-08-21 16:38:40,445 INFO L306 CDTParser]: Found 1 translation units. [2020-08-21 16:38:40,446 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/reducercommutativity/rangesum05.i [2020-08-21 16:38:40,453 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b0c2ef05/e72ceac9a9b840539b4b2981810163ae/FLAG6eeef22e7 [2020-08-21 16:38:40,788 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7b0c2ef05/e72ceac9a9b840539b4b2981810163ae [2020-08-21 16:38:40,801 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-21 16:38:40,804 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-21 16:38:40,810 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-21 16:38:40,810 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-21 16:38:40,814 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-21 16:38:40,815 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:38:40" (1/1) ... [2020-08-21 16:38:40,819 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22d0cd25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:40, skipping insertion in model container [2020-08-21 16:38:40,819 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.08 04:38:40" (1/1) ... [2020-08-21 16:38:40,828 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-21 16:38:40,848 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-21 16:38:41,074 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:38:41,085 INFO L203 MainTranslator]: Completed pre-run [2020-08-21 16:38:41,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-21 16:38:41,150 INFO L208 MainTranslator]: Completed translation [2020-08-21 16:38:41,150 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41 WrapperNode [2020-08-21 16:38:41,151 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-21 16:38:41,151 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-21 16:38:41,152 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-21 16:38:41,152 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-21 16:38:41,259 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... [2020-08-21 16:38:41,259 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... [2020-08-21 16:38:41,269 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... [2020-08-21 16:38:41,269 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... [2020-08-21 16:38:41,279 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... [2020-08-21 16:38:41,284 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... [2020-08-21 16:38:41,286 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... [2020-08-21 16:38:41,292 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-21 16:38:41,293 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-21 16:38:41,293 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-21 16:38:41,293 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-21 16:38:41,294 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-21 16:38:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-21 16:38:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-21 16:38:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure init_nondet [2020-08-21 16:38:41,375 INFO L138 BoogieDeclarations]: Found implementation of procedure rangesum [2020-08-21 16:38:41,376 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-21 16:38:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-21 16:38:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-21 16:38:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure init_nondet [2020-08-21 16:38:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-21 16:38:41,376 INFO L130 BoogieDeclarations]: Found specification of procedure rangesum [2020-08-21 16:38:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-21 16:38:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-21 16:38:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-08-21 16:38:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-21 16:38:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-21 16:38:41,377 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-21 16:38:41,695 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-21 16:38:41,696 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-21 16:38:41,700 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:38:41 BoogieIcfgContainer [2020-08-21 16:38:41,700 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-21 16:38:41,702 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-21 16:38:41,702 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-21 16:38:41,705 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-21 16:38:41,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.08 04:38:40" (1/3) ... [2020-08-21 16:38:41,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66006c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:38:41, skipping insertion in model container [2020-08-21 16:38:41,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.08 04:38:41" (2/3) ... [2020-08-21 16:38:41,707 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66006c92 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.08 04:38:41, skipping insertion in model container [2020-08-21 16:38:41,707 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.08 04:38:41" (3/3) ... [2020-08-21 16:38:41,709 INFO L109 eAbstractionObserver]: Analyzing ICFG rangesum05.i [2020-08-21 16:38:41,722 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-21 16:38:41,730 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-21 16:38:41,745 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-21 16:38:41,770 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-21 16:38:41,770 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-21 16:38:41,770 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-08-21 16:38:41,771 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-21 16:38:41,771 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-21 16:38:41,771 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-21 16:38:41,771 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-21 16:38:41,771 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-21 16:38:41,791 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states. [2020-08-21 16:38:41,799 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-08-21 16:38:41,799 INFO L414 BasicCegarLoop]: Found error trace [2020-08-21 16:38:41,801 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-08-21 16:38:41,801 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-21 16:38:41,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-21 16:38:41,808 INFO L82 PathProgramCache]: Analyzing trace with hash -332770493, now seen corresponding path program 1 times [2020-08-21 16:38:41,817 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-21 16:38:41,817 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1676249461] [2020-08-21 16:38:41,818 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-21 16:38:41,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-21 16:38:41,953 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1676249461] [2020-08-21 16:38:41,954 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-08-21 16:38:41,954 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-08-21 16:38:41,954 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-08-21 16:38:41,955 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-08-21 16:38:41,955 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-21 16:38:41,960 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-21 16:38:41,975 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-08-21 16:38:41,976 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.08 04:38:41 BoogieIcfgContainer [2020-08-21 16:38:41,976 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-21 16:38:41,979 INFO L168 Benchmark]: Toolchain (without parser) took 1174.02 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 100.6 MB in the beginning and 146.0 MB in the end (delta: -45.4 MB). Peak memory consumption was 17.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:38:41,980 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-08-21 16:38:41,981 INFO L168 Benchmark]: CACSL2BoogieTranslator took 340.91 ms. Allocated memory is still 137.9 MB. Free memory was 100.2 MB in the beginning and 88.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:38:41,982 INFO L168 Benchmark]: Boogie Preprocessor took 140.79 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 88.7 MB in the beginning and 178.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. [2020-08-21 16:38:41,983 INFO L168 Benchmark]: RCFGBuilder took 408.01 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 160.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. [2020-08-21 16:38:41,984 INFO L168 Benchmark]: TraceAbstraction took 274.13 ms. Allocated memory is still 200.8 MB. Free memory was 159.5 MB in the beginning and 146.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-08-21 16:38:41,988 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 137.9 MB. Free memory was 119.4 MB in the beginning and 119.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 340.91 ms. Allocated memory is still 137.9 MB. Free memory was 100.2 MB in the beginning and 88.7 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 140.79 ms. Allocated memory was 137.9 MB in the beginning and 200.8 MB in the end (delta: 62.9 MB). Free memory was 88.7 MB in the beginning and 178.1 MB in the end (delta: -89.4 MB). Peak memory consumption was 12.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 408.01 ms. Allocated memory is still 200.8 MB. Free memory was 178.1 MB in the beginning and 160.2 MB in the end (delta: 17.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 274.13 ms. Allocated memory is still 200.8 MB. Free memory was 159.5 MB in the beginning and 146.0 MB in the end (delta: 13.5 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 50]: 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: [L31] int x[5]; [L32] CALL init_nondet(x) [L5] int i; [L6] i = 0 [L6] COND FALSE !(i < 5) [L32] RET init_nondet(x) [L33] int temp; [L34] int ret; [L35] int ret2; [L36] int ret5; [L38] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L38] RET, EXPR rangesum(x) [L38] ret = rangesum(x) [L40] EXPR x[0] [L40] temp=x[0] [L40] EXPR x[1] [L40] x[0] = x[1] [L40] x[1] = temp [L41] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L41] RET, EXPR rangesum(x) [L41] ret2 = rangesum(x) [L42] EXPR x[0] [L42] temp=x[0] [L43] int i =0 ; [L43] COND FALSE !(i<5 -1) [L46] x[5 -1] = temp [L47] CALL, EXPR rangesum(x) [L13] int i; [L14] long long ret; [L15] ret = 0 [L16] int cnt = 0; [L17] i = 0 [L23] COND TRUE cnt !=0 [L24] return ret / cnt; [L47] RET, EXPR rangesum(x) [L47] ret5 = rangesum(x) [L49] COND TRUE ret != ret2 || ret !=ret5 [L50] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 37 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.1s, 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=37occurred 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, 37 NumberOfCodeBlocks, 37 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...