/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 SequenceOfStatements --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=BIGGEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/sum02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:34:23,253 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:34:23,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:34:23,295 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:34:23,295 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:34:23,304 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:34:23,306 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:34:23,310 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:34:23,313 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:34:23,317 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:34:23,318 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:34:23,319 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:34:23,319 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:34:23,322 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:34:23,326 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:34:23,328 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:34:23,330 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:34:23,331 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:34:23,333 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:34:23,341 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:34:23,344 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:34:23,345 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:34:23,346 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:34:23,347 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:34:23,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:34:23,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:34:23,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:34:23,361 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:34:23,363 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:34:23,364 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:34:23,369 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:34:23,370 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:34:23,373 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:34:23,374 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:34:23,375 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:34:23,375 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:34:23,376 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:34:23,378 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:34:23,378 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:34:23,379 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:34:23,380 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:34:23,382 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 [2020-10-12 10:34:23,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:34:23,431 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:34:23,433 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:34:23,433 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:34:23,434 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:34:23,434 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:34:23,435 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:34:23,435 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:34:23,435 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:34:23,435 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:34:23,436 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:34:23,437 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:34:23,437 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:34:23,437 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:34:23,437 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:34:23,438 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:34:23,438 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:34:23,438 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:34:23,438 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:34:23,439 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:34:23,439 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:34:23,439 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:34:23,439 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:34:23,439 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:34:23,439 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:34:23,440 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:34:23,440 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:34:23,440 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:34:23,440 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:34:23,440 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 -> SequenceOfStatements 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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=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=BIGGEST;log-additional-information=true;unknown-allowed=true; [2020-10-12 10:34:23,765 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:34:23,787 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:34:23,792 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:34:23,794 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:34:23,795 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:34:23,795 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/sum02-1.c [2020-10-12 10:34:23,867 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/051df3816/e4aa9cec241b41edb0a812c0f3714ad2/FLAG46acb1d9b [2020-10-12 10:34:24,355 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:34:24,355 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/sum02-1.c [2020-10-12 10:34:24,362 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/051df3816/e4aa9cec241b41edb0a812c0f3714ad2/FLAG46acb1d9b [2020-10-12 10:34:24,751 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/051df3816/e4aa9cec241b41edb0a812c0f3714ad2 [2020-10-12 10:34:24,760 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:34:24,762 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:34:24,763 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:34:24,764 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:34:24,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:34:24,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:34:24" (1/1) ... [2020-10-12 10:34:24,772 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7673bb3a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:24, skipping insertion in model container [2020-10-12 10:34:24,772 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:34:24" (1/1) ... [2020-10-12 10:34:24,780 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:34:24,797 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:34:24,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:34:24,967 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:34:24,983 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:34:24,999 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:34:25,000 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25 WrapperNode [2020-10-12 10:34:25,000 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:34:25,001 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:34:25,001 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:34:25,001 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:34:25,016 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (1/1) ... [2020-10-12 10:34:25,016 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (1/1) ... [2020-10-12 10:34:25,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (1/1) ... [2020-10-12 10:34:25,105 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (1/1) ... [2020-10-12 10:34:25,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (1/1) ... [2020-10-12 10:34:25,121 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (1/1) ... [2020-10-12 10:34:25,122 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (1/1) ... [2020-10-12 10:34:25,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:34:25,124 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:34:25,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:34:25,125 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:34:25,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (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 [2020-10-12 10:34:25,193 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:34:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:34:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:34:25,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:34:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:34:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:34:25,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 10:34:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:34:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:34:25,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:34:25,369 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:34:25,369 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 10:34:25,373 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:34:25 BoogieIcfgContainer [2020-10-12 10:34:25,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:34:25,374 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:34:25,375 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:34:25,378 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:34:25,378 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:34:24" (1/3) ... [2020-10-12 10:34:25,379 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c39630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:34:25, skipping insertion in model container [2020-10-12 10:34:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:34:25" (2/3) ... [2020-10-12 10:34:25,380 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7c39630f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:34:25, skipping insertion in model container [2020-10-12 10:34:25,380 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:34:25" (3/3) ... [2020-10-12 10:34:25,382 INFO L109 eAbstractionObserver]: Analyzing ICFG sum02-1.c [2020-10-12 10:34:25,393 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:34:25,400 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:34:25,414 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:34:25,435 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:34:25,435 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:34:25,436 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:34:25,436 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:34:25,436 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:34:25,436 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:34:25,436 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:34:25,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:34:25,452 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-12 10:34:25,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 10:34:25,457 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:34:25,458 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:34:25,458 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:34:25,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:34:25,463 INFO L82 PathProgramCache]: Analyzing trace with hash -10373566, now seen corresponding path program 1 times [2020-10-12 10:34:25,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:34:25,471 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [906599464] [2020-10-12 10:34:25,471 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:34:25,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:34:25,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:34:25,580 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [906599464] [2020-10-12 10:34:25,581 WARN L333 FreeRefinementEngine]: Interpolation failed due to KNOWN_IGNORE: Unsupported non-linear arithmetic [2020-10-12 10:34:25,582 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:34:25,582 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2020-10-12 10:34:25,582 ERROR L206 FreeRefinementEngine]: Strategy FIXED_PREFERENCES failed to provide any proof altough trace is infeasible [2020-10-12 10:34:25,583 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-12 10:34:25,587 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:34:25,600 WARN L231 ceAbstractionStarter]: Unable to decide correctness. Please check the following counterexample manually. [2020-10-12 10:34:25,600 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:34:25 BoogieIcfgContainer [2020-10-12 10:34:25,601 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:34:25,604 INFO L168 Benchmark]: Toolchain (without parser) took 840.75 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 103.2 MB in the beginning and 159.5 MB in the end (delta: -56.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-10-12 10:34:25,605 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-10-12 10:34:25,606 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.32 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:25,607 INFO L168 Benchmark]: Boogie Preprocessor took 122.89 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.6 MB in the beginning and 183.3 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:25,608 INFO L168 Benchmark]: RCFGBuilder took 248.63 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 171.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:25,609 INFO L168 Benchmark]: TraceAbstraction took 226.47 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 159.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:34:25,613 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14 ms. Allocated memory is still 148.4 MB. Free memory was 121.8 MB in the beginning and 121.5 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.32 ms. Allocated memory is still 148.4 MB. Free memory was 103.0 MB in the beginning and 93.6 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 122.89 ms. Allocated memory was 148.4 MB in the beginning and 204.5 MB in the end (delta: 56.1 MB). Free memory was 93.6 MB in the beginning and 183.3 MB in the end (delta: -89.7 MB). Peak memory consumption was 10.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 248.63 ms. Allocated memory is still 204.5 MB. Free memory was 182.7 MB in the beginning and 171.9 MB in the end (delta: 10.7 MB). Peak memory consumption was 10.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 226.47 ms. Allocated memory is still 204.5 MB. Free memory was 171.3 MB in the beginning and 159.5 MB in the end (delta: 11.8 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - UnprovableResult [Line: 5]: 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: [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L11] unsigned int i, n=__VERIFIER_nondet_uint(), sn=0; [L12] i=0 [L15] CALL __VERIFIER_assert(sn==(n*(n+1))/2 || sn == 0) [L4] COND TRUE !(cond) [L5] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNKNOWN, OverallTime: 0.1s, OverallIterations: 1, TraceHistogramMax: 1, 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=18occurred 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, 10 NumberOfCodeBlocks, 10 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...