/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/jain_1-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 10:32:55,656 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 10:32:55,659 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 10:32:55,703 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 10:32:55,703 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 10:32:55,711 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 10:32:55,712 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 10:32:55,716 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 10:32:55,718 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 10:32:55,719 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 10:32:55,720 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 10:32:55,721 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 10:32:55,721 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 10:32:55,722 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 10:32:55,723 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 10:32:55,724 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 10:32:55,725 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 10:32:55,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 10:32:55,727 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 10:32:55,729 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 10:32:55,730 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 10:32:55,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 10:32:55,732 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 10:32:55,733 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 10:32:55,735 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 10:32:55,735 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 10:32:55,735 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 10:32:55,736 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 10:32:55,737 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 10:32:55,738 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 10:32:55,738 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 10:32:55,739 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 10:32:55,739 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 10:32:55,740 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 10:32:55,741 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 10:32:55,741 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 10:32:55,742 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 10:32:55,742 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 10:32:55,742 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 10:32:55,743 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 10:32:55,744 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 10:32:55,744 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 10:32:55,767 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 10:32:55,767 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 10:32:55,768 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 10:32:55,768 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 10:32:55,769 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 10:32:55,769 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 10:32:55,769 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 10:32:55,769 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 10:32:55,769 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 10:32:55,770 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 10:32:55,770 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 10:32:55,770 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 10:32:55,770 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 10:32:55,770 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 10:32:55,771 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 10:32:55,771 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 10:32:55,771 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 10:32:55,771 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 10:32:55,771 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 10:32:55,772 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 10:32:55,772 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 10:32:55,772 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 10:32:55,772 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 10:32:55,772 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 10:32:55,773 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 10:32:55,773 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 10:32:55,773 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 10:32:55,773 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 10:32:55,773 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 10:32:55,774 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 10:32:56,107 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 10:32:56,126 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 10:32:56,130 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 10:32:56,132 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 10:32:56,132 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 10:32:56,133 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/bitvector/jain_1-1.c [2020-10-12 10:32:56,197 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c8fc39ba/8b2667edac4947e1a62edb70d860d83a/FLAG4293cbca8 [2020-10-12 10:32:56,652 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 10:32:56,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/bitvector/jain_1-1.c [2020-10-12 10:32:56,660 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c8fc39ba/8b2667edac4947e1a62edb70d860d83a/FLAG4293cbca8 [2020-10-12 10:32:57,007 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9c8fc39ba/8b2667edac4947e1a62edb70d860d83a [2020-10-12 10:32:57,017 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 10:32:57,019 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 10:32:57,020 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:57,021 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 10:32:57,025 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 10:32:57,026 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,029 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4076c4d9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57, skipping insertion in model container [2020-10-12 10:32:57,029 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,038 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 10:32:57,056 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 10:32:57,277 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:57,284 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 10:32:57,303 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 10:32:57,323 INFO L208 MainTranslator]: Completed translation [2020-10-12 10:32:57,325 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57 WrapperNode [2020-10-12 10:32:57,325 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 10:32:57,326 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 10:32:57,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 10:32:57,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 10:32:57,342 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,350 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,350 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,444 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,450 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,452 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (1/1) ... [2020-10-12 10:32:57,453 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 10:32:57,454 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 10:32:57,454 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 10:32:57,454 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 10:32:57,455 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (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 10:32:57,522 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 10:32:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 10:32:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-10-12 10:32:57,523 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 10:32:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 10:32:57,523 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_uint [2020-10-12 10:32:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 10:32:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 10:32:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 10:32:57,524 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 10:32:57,678 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 10:32:57,678 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-12 10:32:57,681 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:57 BoogieIcfgContainer [2020-10-12 10:32:57,682 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 10:32:57,683 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 10:32:57,683 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 10:32:57,686 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 10:32:57,687 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 10:32:57" (1/3) ... [2020-10-12 10:32:57,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7fee34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:57, skipping insertion in model container [2020-10-12 10:32:57,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 10:32:57" (2/3) ... [2020-10-12 10:32:57,688 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7e7fee34 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 10:32:57, skipping insertion in model container [2020-10-12 10:32:57,688 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 10:32:57" (3/3) ... [2020-10-12 10:32:57,690 INFO L109 eAbstractionObserver]: Analyzing ICFG jain_1-1.c [2020-10-12 10:32:57,699 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 10:32:57,706 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 10:32:57,719 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 10:32:57,743 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 10:32:57,744 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 10:32:57,744 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 10:32:57,744 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 10:32:57,744 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 10:32:57,744 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 10:32:57,744 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 10:32:57,745 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 10:32:57,763 INFO L276 IsEmpty]: Start isEmpty. Operand 18 states. [2020-10-12 10:32:57,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-12 10:32:57,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:57,770 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:57,770 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:57,777 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:57,777 INFO L82 PathProgramCache]: Analyzing trace with hash -13144129, now seen corresponding path program 1 times [2020-10-12 10:32:57,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:57,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1506967715] [2020-10-12 10:32:57,788 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:57,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:57,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:58,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:58,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 10:32:58,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:58,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-12 10:32:58,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-12 10:32:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:32:58,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-12 10:32:58,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 10:32:58,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:58,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:58,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:58,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:58,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:58,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-12 10:32:58,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:58,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:58,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:58,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-12 10:32:58,204 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 10:32:58,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1506967715] [2020-10-12 10:32:58,209 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 10:32:58,209 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-12 10:32:58,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1864924013] [2020-10-12 10:32:58,218 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-12 10:32:58,219 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:58,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-12 10:32:58,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-12 10:32:58,245 INFO L87 Difference]: Start difference. First operand 18 states. Second operand 6 states. [2020-10-12 10:32:58,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:58,353 INFO L93 Difference]: Finished difference Result 33 states and 45 transitions. [2020-10-12 10:32:58,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-12 10:32:58,355 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2020-10-12 10:32:58,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:58,365 INFO L225 Difference]: With dead ends: 33 [2020-10-12 10:32:58,365 INFO L226 Difference]: Without dead ends: 20 [2020-10-12 10:32:58,369 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:58,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-12 10:32:58,411 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 19. [2020-10-12 10:32:58,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 19 states. [2020-10-12 10:32:58,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 19 transitions. [2020-10-12 10:32:58,416 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 19 transitions. Word has length 10 [2020-10-12 10:32:58,417 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:58,417 INFO L479 AbstractCegarLoop]: Abstraction has 19 states and 19 transitions. [2020-10-12 10:32:58,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-12 10:32:58,418 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 19 transitions. [2020-10-12 10:32:58,418 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-12 10:32:58,419 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 10:32:58,419 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 10:32:58,419 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 10:32:58,420 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 10:32:58,420 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 10:32:58,420 INFO L82 PathProgramCache]: Analyzing trace with hash 327764987, now seen corresponding path program 1 times [2020-10-12 10:32:58,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 10:32:58,421 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [745757542] [2020-10-12 10:32:58,421 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 10:32:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:58,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:58,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-12 10:32:58,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:58,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-12 10:32:58,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-12 10:32:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-12 10:32:58,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-12 10:32:58,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 10:32:58,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 10:32:58,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:58,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:58,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:58,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-12 10:32:58,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:58,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-12 10:32:58,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 10:32:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:58,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 10:32:58,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:58,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-12 10:32:58,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 10:32:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 10:32:58,799 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 10:32:58,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-12 10:32:58,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 10:32:58,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-12 10:32:58,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 10:32:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 10:32:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 10:32:58,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-12 10:32:58,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-12 10:32:58,808 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 10:32:58,809 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [745757542] [2020-10-12 10:32:58,809 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-12 10:32:58,809 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-12 10:32:58,810 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [228177973] [2020-10-12 10:32:58,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-12 10:32:58,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 10:32:58,815 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-12 10:32:58,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-12 10:32:58,815 INFO L87 Difference]: Start difference. First operand 19 states and 19 transitions. Second operand 7 states. [2020-10-12 10:32:58,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 10:32:58,884 INFO L93 Difference]: Finished difference Result 19 states and 19 transitions. [2020-10-12 10:32:58,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-12 10:32:58,885 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 16 [2020-10-12 10:32:58,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 10:32:58,886 INFO L225 Difference]: With dead ends: 19 [2020-10-12 10:32:58,886 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 10:32:58,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-12 10:32:58,888 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 10:32:58,889 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 10:32:58,889 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 10:32:58,889 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 10:32:58,889 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2020-10-12 10:32:58,890 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 10:32:58,891 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 10:32:58,891 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-12 10:32:58,891 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 10:32:58,892 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 10:32:58,893 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 10:32:58,896 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 10:32:58,983 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-10-12 10:32:58,983 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 10:32:58,983 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 10:32:58,983 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 10:32:58,983 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 10:32:58,984 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 10:32:58,984 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 10 25) the Hoare annotation is: true [2020-10-12 10:32:58,984 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 10 25) no Hoare annotation was computed. [2020-10-12 10:32:58,984 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (<= main_~y~0 (+ (* 2 (div (+ main_~y~0 (- 1)) 2)) 1)) [2020-10-12 10:32:58,985 INFO L264 CegarLoopResult]: At program point L21-1(lines 16 23) the Hoare annotation is: (<= main_~y~0 (+ (* 2 (div (+ main_~y~0 (- 1)) 2)) 1)) [2020-10-12 10:32:58,986 INFO L268 CegarLoopResult]: For program point L16-2(lines 16 23) no Hoare annotation was computed. [2020-10-12 10:32:58,986 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 10 25) no Hoare annotation was computed. [2020-10-12 10:32:58,986 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 4 9) the Hoare annotation is: true [2020-10-12 10:32:58,987 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 4 9) no Hoare annotation was computed. [2020-10-12 10:32:58,987 INFO L268 CegarLoopResult]: For program point L6(line 6) no Hoare annotation was computed. [2020-10-12 10:32:58,987 INFO L268 CegarLoopResult]: For program point L5(lines 5 7) no Hoare annotation was computed. [2020-10-12 10:32:58,987 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 6) no Hoare annotation was computed. [2020-10-12 10:32:58,987 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 9) no Hoare annotation was computed. [2020-10-12 10:32:59,009 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 10:32:59 BoogieIcfgContainer [2020-10-12 10:32:59,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 10:32:59,014 INFO L168 Benchmark]: Toolchain (without parser) took 1992.01 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 102.4 MB in the beginning and 103.7 MB in the end (delta: -1.3 MB). Peak memory consumption was 54.8 MB. Max. memory is 7.1 GB. [2020-10-12 10:32:59,016 INFO L168 Benchmark]: CDTParser took 0.14 ms. Allocated memory is still 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 10:32:59,017 INFO L168 Benchmark]: CACSL2BoogieTranslator took 305.24 ms. Allocated memory is still 146.3 MB. Free memory was 102.0 MB in the beginning and 92.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-10-12 10:32:59,019 INFO L168 Benchmark]: Boogie Preprocessor took 127.43 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.9 MB in the beginning and 181.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. [2020-10-12 10:32:59,020 INFO L168 Benchmark]: RCFGBuilder took 227.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 169.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. [2020-10-12 10:32:59,022 INFO L168 Benchmark]: TraceAbstraction took 1326.32 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 103.7 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.0 MB. Max. memory is 7.1 GB. [2020-10-12 10:32:59,032 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 146.3 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 305.24 ms. Allocated memory is still 146.3 MB. Free memory was 102.0 MB in the beginning and 92.9 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 127.43 ms. Allocated memory was 146.3 MB in the beginning and 202.4 MB in the end (delta: 56.1 MB). Free memory was 92.9 MB in the beginning and 181.0 MB in the end (delta: -88.1 MB). Peak memory consumption was 10.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 227.89 ms. Allocated memory is still 202.4 MB. Free memory was 181.0 MB in the beginning and 169.7 MB in the end (delta: 11.3 MB). Peak memory consumption was 11.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1326.32 ms. Allocated memory is still 202.4 MB. Free memory was 169.7 MB in the beginning and 103.7 MB in the end (delta: 66.0 MB). Peak memory consumption was 66.0 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 <= 2 * ((y + -1) / 2) + 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 18 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 1.1s, OverallIterations: 2, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 17 SDtfs, 11 SDslu, 59 SDs, 0 SdLazy, 33 SolverSat, 5 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, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=19occurred 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, 1 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, 0.6s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 1086 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 2/4 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...