/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-lit/gsv2008.c.i.v+cfa-reducer.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-12 16:08:38,816 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-12 16:08:38,819 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-12 16:08:38,867 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-12 16:08:38,868 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-12 16:08:38,879 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-12 16:08:38,881 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-12 16:08:38,884 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-12 16:08:38,888 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-12 16:08:38,891 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-12 16:08:38,892 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-12 16:08:38,895 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-12 16:08:38,895 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-12 16:08:38,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-12 16:08:38,901 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-12 16:08:38,902 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-12 16:08:38,904 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-12 16:08:38,905 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-12 16:08:38,907 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-12 16:08:38,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-12 16:08:38,917 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-12 16:08:38,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-12 16:08:38,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-12 16:08:38,921 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-12 16:08:38,926 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-12 16:08:38,926 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-12 16:08:38,926 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-12 16:08:38,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-12 16:08:38,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-12 16:08:38,932 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-12 16:08:38,933 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-12 16:08:38,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-12 16:08:38,934 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-12 16:08:38,935 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-12 16:08:38,936 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-12 16:08:38,937 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-12 16:08:38,937 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-12 16:08:38,938 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-12 16:08:38,938 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-12 16:08:38,939 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-12 16:08:38,940 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-12 16:08:38,942 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 16:08:38,990 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-12 16:08:38,990 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-12 16:08:38,993 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-12 16:08:38,993 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-12 16:08:38,993 INFO L138 SettingsManager]: * Use SBE=true [2020-10-12 16:08:38,993 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-12 16:08:38,994 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-12 16:08:38,994 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-12 16:08:38,994 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-12 16:08:38,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-12 16:08:38,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-12 16:08:38,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-12 16:08:38,996 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-12 16:08:38,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-12 16:08:38,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-12 16:08:38,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-12 16:08:38,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-12 16:08:38,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-12 16:08:38,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-12 16:08:38,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-12 16:08:38,998 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-12 16:08:38,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-12 16:08:38,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-12 16:08:38,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-12 16:08:38,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-12 16:08:38,999 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-12 16:08:39,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-12 16:08:39,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-12 16:08:39,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-12 16:08:39,000 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 16:08:39,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-12 16:08:39,313 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-12 16:08:39,316 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-12 16:08:39,318 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-12 16:08:39,318 INFO L275 PluginConnector]: CDTParser initialized [2020-10-12 16:08:39,319 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-10-12 16:08:39,394 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bcd59a38/e406f68bc00f4ecf9e56e3c799bfa6f9/FLAG3d48fcfde [2020-10-12 16:08:39,893 INFO L306 CDTParser]: Found 1 translation units. [2020-10-12 16:08:39,893 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loop-lit/gsv2008.c.i.v+cfa-reducer.c [2020-10-12 16:08:39,900 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bcd59a38/e406f68bc00f4ecf9e56e3c799bfa6f9/FLAG3d48fcfde [2020-10-12 16:08:40,269 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4bcd59a38/e406f68bc00f4ecf9e56e3c799bfa6f9 [2020-10-12 16:08:40,277 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-12 16:08:40,279 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-12 16:08:40,280 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-12 16:08:40,280 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-12 16:08:40,283 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-12 16:08:40,284 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,286 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@edcea15 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40, skipping insertion in model container [2020-10-12 16:08:40,286 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,294 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-12 16:08:40,312 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-12 16:08:40,485 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:08:40,492 INFO L203 MainTranslator]: Completed pre-run [2020-10-12 16:08:40,510 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-12 16:08:40,526 INFO L208 MainTranslator]: Completed translation [2020-10-12 16:08:40,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40 WrapperNode [2020-10-12 16:08:40,527 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-12 16:08:40,528 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-12 16:08:40,528 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-12 16:08:40,529 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-12 16:08:40,544 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,544 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,637 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,640 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,641 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (1/1) ... [2020-10-12 16:08:40,642 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-12 16:08:40,643 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-12 16:08:40,643 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-12 16:08:40,643 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-12 16:08:40,644 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (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 16:08:40,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-12 16:08:40,707 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-12 16:08:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure assume_abort_if_not [2020-10-12 16:08:40,708 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-12 16:08:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-12 16:08:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-12 16:08:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure assume_abort_if_not [2020-10-12 16:08:40,708 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-10-12 16:08:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-12 16:08:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-12 16:08:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-12 16:08:40,709 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-12 16:08:40,892 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-12 16:08:40,893 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-12 16:08:40,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:08:40 BoogieIcfgContainer [2020-10-12 16:08:40,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-12 16:08:40,899 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-12 16:08:40,899 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-12 16:08:40,903 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-12 16:08:40,903 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.10 04:08:40" (1/3) ... [2020-10-12 16:08:40,904 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a31b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:08:40, skipping insertion in model container [2020-10-12 16:08:40,904 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.10 04:08:40" (2/3) ... [2020-10-12 16:08:40,905 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a31b00e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.10 04:08:40, skipping insertion in model container [2020-10-12 16:08:40,905 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.10 04:08:40" (3/3) ... [2020-10-12 16:08:40,907 INFO L109 eAbstractionObserver]: Analyzing ICFG gsv2008.c.i.v+cfa-reducer.c [2020-10-12 16:08:40,919 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-12 16:08:40,926 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-12 16:08:40,939 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-12 16:08:40,961 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-12 16:08:40,961 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-12 16:08:40,961 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-12 16:08:40,962 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-12 16:08:40,962 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-12 16:08:40,962 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-12 16:08:40,962 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-12 16:08:40,962 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-12 16:08:40,979 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states. [2020-10-12 16:08:40,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-12 16:08:40,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:40,986 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:40,987 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:40,992 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:40,993 INFO L82 PathProgramCache]: Analyzing trace with hash 1330899215, now seen corresponding path program 1 times [2020-10-12 16:08:40,999 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:41,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998683872] [2020-10-12 16:08:41,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:41,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:41,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:41,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-12 16:08:41,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:41,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-12 16:08:41,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-12 16:08:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-12 16:08:41,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-10-12 16:08:41,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:08:41,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:41,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:41,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:41,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:41,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:08:41,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:41,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-12 16:08:41,304 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:41,304 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:41,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:41,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-12 16:08:41,326 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 16:08:41,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998683872] [2020-10-12 16:08:41,329 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:08:41,329 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-12 16:08:41,330 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [596271900] [2020-10-12 16:08:41,336 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-12 16:08:41,337 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:41,351 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-12 16:08:41,352 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-12 16:08:41,354 INFO L87 Difference]: Start difference. First operand 16 states. Second operand 4 states. [2020-10-12 16:08:41,443 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:41,444 INFO L93 Difference]: Finished difference Result 26 states and 30 transitions. [2020-10-12 16:08:41,444 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-12 16:08:41,446 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-12 16:08:41,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:41,461 INFO L225 Difference]: With dead ends: 26 [2020-10-12 16:08:41,462 INFO L226 Difference]: Without dead ends: 13 [2020-10-12 16:08:41,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:08:41,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2020-10-12 16:08:41,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2020-10-12 16:08:41,526 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13 states. [2020-10-12 16:08:41,527 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 13 transitions. [2020-10-12 16:08:41,529 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 13 transitions. Word has length 11 [2020-10-12 16:08:41,529 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:41,530 INFO L479 AbstractCegarLoop]: Abstraction has 13 states and 13 transitions. [2020-10-12 16:08:41,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-12 16:08:41,530 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 13 transitions. [2020-10-12 16:08:41,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-12 16:08:41,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-12 16:08:41,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-12 16:08:41,531 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-12 16:08:41,532 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-12 16:08:41,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-12 16:08:41,532 INFO L82 PathProgramCache]: Analyzing trace with hash -1691859760, now seen corresponding path program 1 times [2020-10-12 16:08:41,533 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-12 16:08:41,533 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1758293750] [2020-10-12 16:08:41,533 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-12 16:08:41,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:41,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:41,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:41,675 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-12 16:08:41,675 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:41,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-10-12 16:08:41,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-12 16:08:41,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-12 16:08:41,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-12 16:08:41,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:41,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-12 16:08:41,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-12 16:08:41,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-12 16:08:41,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-12 16:08:41,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-12 16:08:41,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-12 16:08:41,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-12 16:08:41,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-10-12 16:08:41,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-12 16:08:41,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-12 16:08:41,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-12 16:08:41,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-12 16:08:41,763 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-12 16:08:41,763 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1758293750] [2020-10-12 16:08:41,764 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-12 16:08:41,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-12 16:08:41,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1134845393] [2020-10-12 16:08:41,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-12 16:08:41,767 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-12 16:08:41,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-12 16:08:41,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-12 16:08:41,768 INFO L87 Difference]: Start difference. First operand 13 states and 13 transitions. Second operand 5 states. [2020-10-12 16:08:41,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-12 16:08:41,831 INFO L93 Difference]: Finished difference Result 13 states and 13 transitions. [2020-10-12 16:08:41,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-12 16:08:41,831 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-10-12 16:08:41,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-12 16:08:41,832 INFO L225 Difference]: With dead ends: 13 [2020-10-12 16:08:41,832 INFO L226 Difference]: Without dead ends: 0 [2020-10-12 16:08:41,833 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-12 16:08:41,834 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-12 16:08:41,834 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-12 16:08:41,834 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-12 16:08:41,835 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-12 16:08:41,835 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 12 [2020-10-12 16:08:41,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-12 16:08:41,835 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-12 16:08:41,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-12 16:08:41,836 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-12 16:08:41,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-12 16:08:41,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-12 16:08:41,838 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-12 16:08:41,913 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:08:41,914 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= ~__return_main~0 |old(~__return_main~0)|) (= ~__return_65~0 |old(~__return_65~0)|)) [2020-10-12 16:08:41,914 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:08:41,914 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-12 16:08:41,914 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-12 16:08:41,915 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-12 16:08:41,915 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-12 16:08:41,915 INFO L268 CegarLoopResult]: For program point assume_abort_if_notENTRY(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:08:41,915 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-10-12 16:08:41,915 INFO L268 CegarLoopResult]: For program point L5-2(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:08:41,916 INFO L268 CegarLoopResult]: For program point assume_abort_if_notEXIT(lines 4 6) no Hoare annotation was computed. [2020-10-12 16:08:41,916 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 46) no Hoare annotation was computed. [2020-10-12 16:08:41,916 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 11 58) the Hoare annotation is: (= |old(~__return_65~0)| ~__return_65~0) [2020-10-12 16:08:41,916 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 58) no Hoare annotation was computed. [2020-10-12 16:08:41,917 INFO L268 CegarLoopResult]: For program point L23(lines 23 56) no Hoare annotation was computed. [2020-10-12 16:08:41,917 INFO L268 CegarLoopResult]: For program point L17(lines 17 57) no Hoare annotation was computed. [2020-10-12 16:08:41,917 INFO L268 CegarLoopResult]: For program point L46(line 46) no Hoare annotation was computed. [2020-10-12 16:08:41,917 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 11 58) no Hoare annotation was computed. [2020-10-12 16:08:41,917 INFO L268 CegarLoopResult]: For program point L44(lines 44 53) no Hoare annotation was computed. [2020-10-12 16:08:41,918 INFO L264 CegarLoopResult]: At program point L35(lines 28 56) the Hoare annotation is: (let ((.cse0 (= |old(~__return_65~0)| ~__return_65~0))) (or (and .cse0 (<= (+ main_~main__x~0 50) 0)) (and .cse0 (or (<= (+ main_~main__x~0 2) main_~main__y~0) (< 0 main_~main__y~0))))) [2020-10-12 16:08:41,939 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.10 04:08:41 BoogieIcfgContainer [2020-10-12 16:08:41,940 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-12 16:08:41,943 INFO L168 Benchmark]: Toolchain (without parser) took 1662.83 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 103.7 MB in the beginning and 108.6 MB in the end (delta: -4.9 MB). Peak memory consumption was 58.6 MB. Max. memory is 7.1 GB. [2020-10-12 16:08:41,944 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-10-12 16:08:41,945 INFO L168 Benchmark]: CACSL2BoogieTranslator took 248.05 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 94.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:08:41,946 INFO L168 Benchmark]: Boogie Preprocessor took 114.30 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.1 MB in the beginning and 183.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-10-12 16:08:41,947 INFO L168 Benchmark]: RCFGBuilder took 254.89 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 170.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-10-12 16:08:41,948 INFO L168 Benchmark]: TraceAbstraction took 1040.62 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 108.6 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. [2020-10-12 16:08:41,952 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 140.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 248.05 ms. Allocated memory is still 140.5 MB. Free memory was 103.5 MB in the beginning and 94.1 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 114.30 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 94.1 MB in the beginning and 183.0 MB in the end (delta: -88.9 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 254.89 ms. Allocated memory is still 203.9 MB. Free memory was 183.0 MB in the beginning and 170.6 MB in the end (delta: 12.4 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1040.62 ms. Allocated memory is still 203.9 MB. Free memory was 169.9 MB in the beginning and 108.6 MB in the end (delta: 61.3 MB). Peak memory consumption was 61.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 46]: 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: 28]: Loop Invariant Derived loop invariant: (\old(__return_65) == __return_65 && main__x + 50 <= 0) || (\old(__return_65) == __return_65 && (main__x + 2 <= main__y || 0 < main__y)) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 20 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.8s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 24 SDtfs, 19 SDslu, 23 SDs, 0 SdLazy, 23 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred 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, 2 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 5 LocationsWithAnnotation, 5 PreInvPairs, 6 NumberOfFragments, 35 HoareAnnotationTreeSize, 5 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 5 FomulaSimplificationsInter, 10 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 23 NumberOfCodeBlocks, 23 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 21 ConstructedInterpolants, 0 QuantifiedInterpolants, 588 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 1/1 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...