/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/bitvector/jain_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:08:04,422 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:08:04,426 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:08:04,467 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:08:04,468 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:08:04,475 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:08:04,477 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:08:04,481 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:08:04,483 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:08:04,486 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:08:04,487 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:08:04,488 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:08:04,489 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:08:04,491 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:08:04,494 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:08:04,495 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:08:04,497 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:08:04,498 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:08:04,500 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:08:04,508 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:08:04,510 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:08:04,511 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:08:04,513 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:08:04,514 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:08:04,531 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:08:04,531 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:08:04,531 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:08:04,532 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:08:04,533 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:08:04,536 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:08:04,536 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:08:04,537 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:08:04,540 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:08:04,542 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:08:04,543 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:08:04,543 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:08:04,544 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:08:04,544 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:08:04,544 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:08:04,546 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:08:04,547 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:08:04,548 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:08:04,594 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:08:04,594 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:08:04,596 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:08:04,596 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:08:04,596 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:08:04,597 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:08:04,597 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:08:04,597 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:08:04,598 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:08:04,598 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:08:04,599 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:08:04,599 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:08:04,599 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:08:04,600 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:08:04,600 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:08:04,600 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:08:04,600 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:08:04,601 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:08:04,601 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:08:04,601 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:08:04,601 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:08:04,601 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:04,602 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:08:04,602 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:08:04,602 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:08:04,602 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:08:04,602 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:08:04,603 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:08:04,603 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:08:04,603 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:08:05,093 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:08:05,116 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:08:05,122 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:08:05,125 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:08:05,126 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:08:05,127 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_1-1.c [2020-09-25 03:08:05,202 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d53d1bf0/8f7d961875524689a51229a41ba6006e/FLAG13c4286cd [2020-09-25 03:08:05,675 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:08:05,676 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_1-1.c [2020-09-25 03:08:05,684 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d53d1bf0/8f7d961875524689a51229a41ba6006e/FLAG13c4286cd [2020-09-25 03:08:06,034 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5d53d1bf0/8f7d961875524689a51229a41ba6006e [2020-09-25 03:08:06,046 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:08:06,053 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:08:06,054 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:06,054 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:08:06,058 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:08:06,059 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,064 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1cb44f79 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06, skipping insertion in model container [2020-09-25 03:08:06,064 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,073 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:08:06,097 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:08:06,308 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:06,314 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:08:06,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:08:06,351 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:08:06,352 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06 WrapperNode [2020-09-25 03:08:06,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:08:06,353 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:08:06,353 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:08:06,353 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:08:06,370 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,371 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,377 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,377 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,382 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,388 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,389 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... [2020-09-25 03:08:06,465 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:08:06,466 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:08:06,466 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:08:06,466 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:08:06,468 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:08:06,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:08:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:08:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 03:08:06,552 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:08:06,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:08:06,552 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-09-25 03:08:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 03:08:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:08:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:08:06,553 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:08:06,727 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:08:06,728 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 03:08:06,732 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:06 BoogieIcfgContainer [2020-09-25 03:08:06,732 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:08:06,733 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:08:06,733 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:08:06,737 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:08:06,737 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:08:06" (1/3) ... [2020-09-25 03:08:06,738 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255ecfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:06, skipping insertion in model container [2020-09-25 03:08:06,738 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:08:06" (2/3) ... [2020-09-25 03:08:06,739 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@255ecfc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:08:06, skipping insertion in model container [2020-09-25 03:08:06,739 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:08:06" (3/3) ... [2020-09-25 03:08:06,741 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_1-1.c [2020-09-25 03:08:06,751 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:08:06,761 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:08:06,780 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:08:06,811 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:08:06,812 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:08:06,812 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:08:06,812 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:08:06,812 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:08:06,813 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:08:06,813 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:08:06,813 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:08:06,833 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states. [2020-09-25 03:08:06,839 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 03:08:06,839 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:06,840 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:06,840 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:06,847 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:06,848 INFO L82 PathProgramCache]: Analyzing trace with hash -1669881215, now seen corresponding path program 1 times [2020-09-25 03:08:06,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:06,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844137686] [2020-09-25 03:08:06,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:06,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:07,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:07,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:07,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 03:08:07,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:07,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 03:08:07,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:08:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:08:07,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:08:07,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:08:07,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:07,215 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:07,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:07,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:07,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:07,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:08:07,221 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:07,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:07,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:08:07,231 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:07,232 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844137686] [2020-09-25 03:08:07,235 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:08:07,235 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 03:08:07,237 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1725863994] [2020-09-25 03:08:07,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:08:07,244 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:07,263 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:08:07,264 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:08:07,267 INFO L87 Difference]: Start difference. First operand 21 states. Second operand 6 states. [2020-09-25 03:08:07,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:07,366 INFO L93 Difference]: Finished difference Result 41 states and 53 transitions. [2020-09-25 03:08:07,367 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:08:07,368 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-25 03:08:07,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:07,378 INFO L225 Difference]: With dead ends: 41 [2020-09-25 03:08:07,378 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 03:08:07,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:07,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 03:08:07,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 24. [2020-09-25 03:08:07,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-25 03:08:07,422 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-09-25 03:08:07,424 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 13 [2020-09-25 03:08:07,425 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:07,425 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-09-25 03:08:07,425 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:08:07,425 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-09-25 03:08:07,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-09-25 03:08:07,426 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:08:07,426 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:08:07,426 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:08:07,426 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:08:07,427 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:08:07,427 INFO L82 PathProgramCache]: Analyzing trace with hash -1217933636, now seen corresponding path program 1 times [2020-09-25 03:08:07,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:08:07,428 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [331501854] [2020-09-25 03:08:07,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:08:07,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:07,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:07,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:07,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:08:07,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:07,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-09-25 03:08:07,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:08:07,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 03:08:07,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-25 03:08:07,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:08:07,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:08:07,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:07,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:07,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:07,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:08:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:08:07,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:08:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:07,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:08:07,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:07,936 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 03:08:07,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:08:07,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:08:07,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:08:07,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-25 03:08:07,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:08:07,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 03:08:07,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:08:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:08:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:08:07,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:08:07,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:08:07,978 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:08:07,979 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [331501854] [2020-09-25 03:08:07,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:08:07,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:08:07,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1661648709] [2020-09-25 03:08:07,982 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:08:07,982 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:08:07,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:08:07,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:08:07,983 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 7 states. [2020-09-25 03:08:08,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:08:08,034 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-09-25 03:08:08,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:08:08,036 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 21 [2020-09-25 03:08:08,036 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:08:08,037 INFO L225 Difference]: With dead ends: 24 [2020-09-25 03:08:08,037 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 03:08:08,038 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:08:08,039 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 03:08:08,039 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 03:08:08,039 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 03:08:08,039 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 03:08:08,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 21 [2020-09-25 03:08:08,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:08:08,040 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 03:08:08,040 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:08:08,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 03:08:08,042 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 03:08:08,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:08:08,046 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 03:08:08,114 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 03:08:08,115 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:08:08,115 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 03:08:08,115 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 03:08:08,115 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 03:08:08,116 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 03:08:08,116 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-09-25 03:08:08,116 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-09-25 03:08:08,117 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-09-25 03:08:08,117 INFO L264 CegarLoopResult]: At program point L21-1(lines 16 23) the Hoare annotation is: (let ((.cse0 (+ main_~y~0 1))) (<= .cse0 (* 2 (div .cse0 2)))) [2020-09-25 03:08:08,117 INFO L268 CegarLoopResult]: For program point L18(line 18) no Hoare annotation was computed. [2020-09-25 03:08:08,117 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 03:08:08,118 INFO L268 CegarLoopResult]: For program point L14(line 14) no Hoare annotation was computed. [2020-09-25 03:08:08,118 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 23) no Hoare annotation was computed. [2020-09-25 03:08:08,118 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-09-25 03:08:08,118 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 03:08:08,118 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 03:08:08,118 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-09-25 03:08:08,119 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-09-25 03:08:08,119 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-09-25 03:08:08,119 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-09-25 03:08:08,143 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 03:08:08 BoogieIcfgContainer [2020-09-25 03:08:08,143 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 03:08:08,149 INFO L168 Benchmark]: Toolchain (without parser) took 2097.20 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 106.3 MB in the beginning and 104.7 MB in the end (delta: 1.6 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:08,151 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-25 03:08:08,152 INFO L168 Benchmark]: CACSL2BoogieTranslator took 298.64 ms. Allocated memory is still 142.6 MB. Free memory was 105.6 MB in the beginning and 96.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:08,153 INFO L168 Benchmark]: Boogie Preprocessor took 112.96 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 96.4 MB in the beginning and 184.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:08,155 INFO L168 Benchmark]: RCFGBuilder took 265.83 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 173.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:08,156 INFO L168 Benchmark]: TraceAbstraction took 1410.31 ms. Allocated memory is still 204.5 MB. Free memory was 172.4 MB in the beginning and 104.7 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. [2020-09-25 03:08:08,165 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 142.6 MB. Free memory was 124.2 MB in the beginning and 124.0 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 298.64 ms. Allocated memory is still 142.6 MB. Free memory was 105.6 MB in the beginning and 96.4 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 112.96 ms. Allocated memory was 142.6 MB in the beginning and 204.5 MB in the end (delta: 61.9 MB). Free memory was 96.4 MB in the beginning and 184.5 MB in the end (delta: -88.1 MB). Peak memory consumption was 13.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 265.83 ms. Allocated memory is still 204.5 MB. Free memory was 184.5 MB in the beginning and 173.0 MB in the end (delta: 11.5 MB). Peak memory consumption was 11.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1410.31 ms. Allocated memory is still 204.5 MB. Free memory was 172.4 MB in the beginning and 104.7 MB in the end (delta: 67.7 MB). Peak memory consumption was 67.7 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 6]: 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: 16]: Loop Invariant Derived loop invariant: y + 1 <= 2 * ((y + 1) / 2) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 21 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.2s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 23 SDtfs, 14 SDslu, 78 SDs, 0 SdLazy, 38 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=24occurred in iteration=1, 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, 2 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 13 NumberOfFragments, 27 HoareAnnotationTreeSize, 9 FomulaSimplifications, 22 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 8 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 34 NumberOfCodeBlocks, 34 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 2408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/6 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...