/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/loop-invariants/eq2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:05:07,218 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:05:07,221 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:05:07,265 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:05:07,265 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:05:07,266 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:05:07,267 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:05:07,269 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:05:07,271 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:05:07,272 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:05:07,273 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:05:07,274 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:05:07,274 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:05:07,275 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:05:07,276 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:05:07,277 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:05:07,278 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:05:07,279 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:05:07,281 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:05:07,283 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:05:07,284 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:05:07,285 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:05:07,287 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:05:07,288 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:05:07,290 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:05:07,291 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:05:07,291 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:05:07,292 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:05:07,292 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:05:07,293 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:05:07,293 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:05:07,294 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:05:07,295 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:05:07,296 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:05:07,297 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:05:07,297 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:05:07,298 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:05:07,298 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:05:07,298 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:05:07,299 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:05:07,300 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:05:07,301 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 16:05:07,323 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:05:07,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:05:07,325 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:05:07,325 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:05:07,325 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:05:07,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:05:07,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:05:07,326 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:05:07,326 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:05:07,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:05:07,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:05:07,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:05:07,327 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:05:07,327 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:05:07,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:05:07,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:05:07,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:05:07,328 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:05:07,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:05:07,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:05:07,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:05:07,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:05:07,329 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:05:07,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:05:07,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:05:07,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:05:07,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:05:07,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:05:07,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:05:07,330 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 16:05:07,636 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:05:07,660 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:05:07,666 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:05:07,668 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:05:07,670 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:05:07,670 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-invariants/eq2.c [2020-10-12 16:05:07,746 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293a5c451/2d9648429c5c489486aa1c6006a05e47/FLAG91592247d [2020-10-12 16:05:08,202 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:05:08,203 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-invariants/eq2.c [2020-10-12 16:05:08,209 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293a5c451/2d9648429c5c489486aa1c6006a05e47/FLAG91592247d [2020-10-12 16:05:08,572 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/293a5c451/2d9648429c5c489486aa1c6006a05e47 [2020-10-12 16:05:08,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:05:08,583 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:05:08,584 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:05:08,584 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:05:08,588 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:05:08,589 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,593 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7d064956 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08, skipping insertion in model container [2020-10-12 16:05:08,593 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,601 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:05:08,618 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:05:08,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:05:08,815 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:05:08,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:05:08,841 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:05:08,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08 WrapperNode [2020-10-12 16:05:08,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:05:08,842 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:05:08,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:05:08,843 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:05:08,854 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,855 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,859 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,859 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,863 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,868 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,869 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (1/1) ... [2020-10-12 16:05:08,944 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:05:08,945 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:05:08,945 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:05:08,947 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:05:08,948 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (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 16:05:09,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:05:09,004 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:05:09,004 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 16:05:09,004 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:05:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:05:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 16:05:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:05:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:05:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:05:09,005 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:05:09,183 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:05:09,183 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 16:05:09,187 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:05:09 BoogieIcfgContainer [2020-10-12 16:05:09,187 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:05:09,188 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:05:09,189 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:05:09,192 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:05:09,192 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:05:08" (1/3) ... [2020-10-12 16:05:09,193 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bf458f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:05:09, skipping insertion in model container [2020-10-12 16:05:09,193 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:05:08" (2/3) ... [2020-10-12 16:05:09,194 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30bf458f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:05:09, skipping insertion in model container [2020-10-12 16:05:09,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:05:09" (3/3) ... [2020-10-12 16:05:09,196 INFO L109 eAbstractionObserver]: Analyzing ICFG eq2.c [2020-10-12 16:05:09,207 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:05:09,214 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:05:09,228 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:05:09,249 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:05:09,250 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:05:09,250 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:05:09,250 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:05:09,250 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:05:09,250 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:05:09,250 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:05:09,251 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:05:09,266 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-12 16:05:09,272 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 16:05:09,272 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:05:09,273 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:05:09,273 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:05:09,278 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:05:09,278 INFO L82 PathProgramCache]: Analyzing trace with hash -14991171, now seen corresponding path program 1 times [2020-10-12 16:05:09,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:05:09,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1459759797] [2020-10-12 16:05:09,286 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:05:09,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:05:09,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:05:09,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:05:09,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:05:09,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:05:09,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-12 16:05:09,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:05:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-12 16:05:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 16:05:09,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 16:05:09,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:05:09,788 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:05:09,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:05:09,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:05:09,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:05:09,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 16:05:09,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:05:09,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-12 16:05:09,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:05:09,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:05:09,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:05:09,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:05:09,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 16:05:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:05:09,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1459759797] [2020-10-12 16:05:09,817 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:05:09,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:05:09,822 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262944788] [2020-10-12 16:05:09,833 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:05:09,834 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:05:09,870 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:05:09,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:05:09,878 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 5 states. [2020-10-12 16:05:09,953 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:05:09,953 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-10-12 16:05:09,954 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:05:09,956 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 10 [2020-10-12 16:05:09,957 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:05:09,964 INFO L225 Difference]: With dead ends: 28 [2020-10-12 16:05:09,964 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:05:09,969 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-12 16:05:09,988 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:05:09,994 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:05:09,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:05:09,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:05:09,998 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 10 [2020-10-12 16:05:09,998 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:05:09,999 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:05:09,999 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:05:09,999 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:05:09,999 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:05:10,000 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:05:10,002 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:05:10,057 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 16:05:10,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:05:10,057 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:05:10,057 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:05:10,058 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:05:10,058 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:05:10,058 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 9 20) the Hoare annotation is: true [2020-10-12 16:05:10,058 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 9 20) no Hoare annotation was computed. [2020-10-12 16:05:10,059 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-10-12 16:05:10,059 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 9 20) no Hoare annotation was computed. [2020-10-12 16:05:10,059 INFO L264 CegarLoopResult]: At program point L14-2(lines 14 17) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= main_~z~0 main_~y~0))) [2020-10-12 16:05:10,060 INFO L264 CegarLoopResult]: At program point L14-3(lines 14 17) the Hoare annotation is: (let ((.cse1 (+ main_~y~0 (* 4294967296 (div main_~z~0 4294967296)))) (.cse0 (* 4294967296 (div main_~y~0 4294967296)))) (and (<= (+ main_~z~0 .cse0) .cse1) (< .cse1 (+ main_~z~0 .cse0 1)) (<= main_~z~0 main_~y~0))) [2020-10-12 16:05:10,060 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-10-12 16:05:10,060 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:05:10,060 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-12 16:05:10,061 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:05:10,061 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-10-12 16:05:10,061 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-10-12 16:05:10,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:05:10 BoogieIcfgContainer [2020-10-12 16:05:10,081 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:05:10,084 INFO L168 Benchmark]: Toolchain (without parser) took 1500.52 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 102.8 MB in the beginning and 123.7 MB in the end (delta: -20.9 MB). Peak memory consumption was 41.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:05:10,086 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 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. [2020-10-12 16:05:10,087 INFO L168 Benchmark]: CACSL2BoogieTranslator took 258.05 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:05:10,088 INFO L168 Benchmark]: Boogie Preprocessor took 101.86 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 181.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:05:10,089 INFO L168 Benchmark]: RCFGBuilder took 242.65 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 168.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-10-12 16:05:10,090 INFO L168 Benchmark]: TraceAbstraction took 892.78 ms. Allocated memory is still 201.3 MB. Free memory was 168.8 MB in the beginning and 123.7 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:05:10,094 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 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 258.05 ms. Allocated memory is still 138.9 MB. Free memory was 102.5 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.86 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 93.2 MB in the beginning and 181.3 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 242.65 ms. Allocated memory is still 201.3 MB. Free memory was 181.3 MB in the beginning and 168.8 MB in the end (delta: 12.5 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 892.78 ms. Allocated memory is still 201.3 MB. Free memory was 168.8 MB in the beginning and 123.7 MB in the end (delta: 45.1 MB). Peak memory consumption was 45.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 14]: Loop Invariant Derived loop invariant: (z + 4294967296 * (y / 4294967296) <= y + 4294967296 * (z / 4294967296) && y + 4294967296 * (z / 4294967296) < z + 4294967296 * (y / 4294967296) + 1) && z <= y - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.7s, OverallIterations: 1, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 12 SDtfs, 7 SDslu, 29 SDs, 0 SdLazy, 10 SolverSat, 1 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 8 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 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: 0.0s AutomataMinimizationTime, 1 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 8 PreInvPairs, 9 NumberOfFragments, 75 HoareAnnotationTreeSize, 8 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 10 NumberOfCodeBlocks, 10 NumberOfCodeBlocksAsserted, 1 NumberOfCheckSat, 9 ConstructedInterpolants, 0 QuantifiedInterpolants, 747 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 1 InterpolantComputations, 1 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 proved your program to be correct! Received shutdown request...