/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=NARROWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/loops/trex02-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 02:19:14,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 02:19:14,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 02:19:14,886 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 02:19:14,887 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 02:19:14,897 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 02:19:14,899 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 02:19:14,903 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 02:19:14,906 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 02:19:14,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 02:19:14,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 02:19:14,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 02:19:14,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 02:19:14,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 02:19:14,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 02:19:14,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 02:19:14,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 02:19:14,922 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 02:19:14,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 02:19:14,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 02:19:14,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 02:19:14,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 02:19:14,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 02:19:14,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 02:19:14,942 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 02:19:14,942 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 02:19:14,942 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 02:19:14,945 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 02:19:14,946 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 02:19:14,947 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 02:19:14,947 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 02:19:14,948 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 02:19:14,949 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 02:19:14,950 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 02:19:14,951 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 02:19:14,951 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 02:19:14,952 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 02:19:14,952 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 02:19:14,952 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 02:19:14,953 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 02:19:14,954 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 02:19:14,955 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 02:19:14,981 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 02:19:14,982 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 02:19:14,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 02:19:14,983 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 02:19:14,983 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 02:19:14,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 02:19:14,984 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 02:19:14,984 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 02:19:14,984 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 02:19:14,984 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 02:19:14,985 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 02:19:14,985 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 02:19:14,985 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 02:19:14,985 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 02:19:14,986 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 02:19:14,986 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 02:19:14,986 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 02:19:14,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 02:19:14,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 02:19:14,987 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 02:19:14,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 02:19:14,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 02:19:14,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 02:19:14,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 02:19:14,988 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 02:19:14,988 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 02:19:14,988 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 02:19:14,988 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 02:19:14,988 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 02:19:14,989 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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;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=NARROWEST;log-additional-information=true; [2020-09-25 02:19:15,467 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 02:19:15,491 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 02:19:15,499 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 02:19:15,501 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 02:19:15,502 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 02:19:15,503 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/loops/trex02-1.c [2020-09-25 02:19:15,578 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfdd66c9/07ec9c9b35184510a57142f5ccac31c5/FLAG13b61ad39 [2020-09-25 02:19:16,077 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 02:19:16,078 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/loops/trex02-1.c [2020-09-25 02:19:16,087 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfdd66c9/07ec9c9b35184510a57142f5ccac31c5/FLAG13b61ad39 [2020-09-25 02:19:16,414 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4cfdd66c9/07ec9c9b35184510a57142f5ccac31c5 [2020-09-25 02:19:16,426 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 02:19:16,431 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 02:19:16,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:16,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 02:19:16,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 02:19:16,437 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,441 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@41f7b60e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16, skipping insertion in model container [2020-09-25 02:19:16,441 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,450 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 02:19:16,471 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 02:19:16,677 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:16,682 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 02:19:16,701 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 02:19:16,715 INFO L208 MainTranslator]: Completed translation [2020-09-25 02:19:16,716 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16 WrapperNode [2020-09-25 02:19:16,716 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 02:19:16,717 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 02:19:16,717 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 02:19:16,717 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 02:19:16,733 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,733 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,824 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,829 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,835 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,836 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (1/1) ... [2020-09-25 02:19:16,838 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 02:19:16,839 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 02:19:16,839 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 02:19:16,839 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 02:19:16,840 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (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 02:19:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 02:19:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 02:19:16,911 INFO L138 BoogieDeclarations]: Found implementation of procedure __VERIFIER_assert [2020-09-25 02:19:16,912 INFO L138 BoogieDeclarations]: Found implementation of procedure foo [2020-09-25 02:19:16,912 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 02:19:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 02:19:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_assert [2020-09-25 02:19:16,912 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_bool [2020-09-25 02:19:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 02:19:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure foo [2020-09-25 02:19:16,913 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 02:19:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 02:19:16,914 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 02:19:17,138 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 02:19:17,139 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 02:19:17,161 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:17 BoogieIcfgContainer [2020-09-25 02:19:17,162 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 02:19:17,164 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 02:19:17,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 02:19:17,178 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 02:19:17,178 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:19:16" (1/3) ... [2020-09-25 02:19:17,179 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b3db10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:17, skipping insertion in model container [2020-09-25 02:19:17,179 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:19:16" (2/3) ... [2020-09-25 02:19:17,182 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@76b3db10 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:19:17, skipping insertion in model container [2020-09-25 02:19:17,182 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:19:17" (3/3) ... [2020-09-25 02:19:17,189 INFO L109 eAbstractionObserver]: Analyzing ICFG trex02-1.c [2020-09-25 02:19:17,212 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 02:19:17,222 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 02:19:17,251 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 02:19:17,280 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 02:19:17,281 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 02:19:17,281 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 02:19:17,281 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 02:19:17,281 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 02:19:17,281 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 02:19:17,282 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 02:19:17,282 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 02:19:17,304 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 02:19:17,310 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 02:19:17,310 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:17,311 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:17,312 INFO L427 AbstractCegarLoop]: === Iteration 1 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:17,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:17,318 INFO L82 PathProgramCache]: Analyzing trace with hash 1010422485, now seen corresponding path program 1 times [2020-09-25 02:19:17,327 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:17,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [860717179] [2020-09-25 02:19:17,328 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:17,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:17,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:17,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:19:17,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:17,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 02:19:17,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:17,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:19:17,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:17,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 02:19:17,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:17,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:17,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:17,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:19:17,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:17,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 02:19:17,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:17,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:17,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:17,559 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:17,566 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 02:19:17,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [860717179] [2020-09-25 02:19:17,570 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:17,570 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-25 02:19:17,571 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1284199552] [2020-09-25 02:19:17,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-25 02:19:17,577 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:17,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-25 02:19:17,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:17,598 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 3 states. [2020-09-25 02:19:17,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:17,669 INFO L93 Difference]: Finished difference Result 41 states and 46 transitions. [2020-09-25 02:19:17,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-25 02:19:17,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 13 [2020-09-25 02:19:17,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:17,684 INFO L225 Difference]: With dead ends: 41 [2020-09-25 02:19:17,684 INFO L226 Difference]: Without dead ends: 24 [2020-09-25 02:19:17,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-25 02:19:17,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-09-25 02:19:17,730 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-09-25 02:19:17,731 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-09-25 02:19:17,733 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 26 transitions. [2020-09-25 02:19:17,735 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 26 transitions. Word has length 13 [2020-09-25 02:19:17,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:17,735 INFO L479 AbstractCegarLoop]: Abstraction has 24 states and 26 transitions. [2020-09-25 02:19:17,735 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-25 02:19:17,735 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 26 transitions. [2020-09-25 02:19:17,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-25 02:19:17,736 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 02:19:17,736 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 02:19:17,737 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 02:19:17,737 INFO L427 AbstractCegarLoop]: === Iteration 2 === [__VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 02:19:17,737 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 02:19:17,737 INFO L82 PathProgramCache]: Analyzing trace with hash 997493191, now seen corresponding path program 1 times [2020-09-25 02:19:17,738 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 02:19:17,738 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [376762821] [2020-09-25 02:19:17,738 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 02:19:17,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:17,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:17,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:17,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 02:19:17,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:17,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 02:19:17,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 02:19:17,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 02:19:17,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 02:19:17,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:17,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 02:19:17,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 02:19:17,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 02:19:17,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 02:19:17,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-09-25 02:19:17,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 02:19:17,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 02:19:17,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: NARROWEST [2020-09-25 02:19:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 02:19:17,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 02:19:17,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 02:19:17,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 02:19:17,881 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 02:19:17,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [376762821] [2020-09-25 02:19:17,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 02:19:17,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 02:19:17,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1439101833] [2020-09-25 02:19:17,885 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 02:19:17,885 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 02:19:17,885 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 02:19:17,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 02:19:17,886 INFO L87 Difference]: Start difference. First operand 24 states and 26 transitions. Second operand 6 states. [2020-09-25 02:19:17,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 02:19:17,962 INFO L93 Difference]: Finished difference Result 24 states and 26 transitions. [2020-09-25 02:19:17,963 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 02:19:17,963 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 13 [2020-09-25 02:19:17,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 02:19:17,964 INFO L225 Difference]: With dead ends: 24 [2020-09-25 02:19:17,964 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 02:19:17,966 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=45, Unknown=0, NotChecked=0, Total=72 [2020-09-25 02:19:17,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 02:19:17,966 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 02:19:17,967 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 02:19:17,967 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 02:19:17,967 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 13 [2020-09-25 02:19:17,967 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 02:19:17,967 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 02:19:17,968 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 02:19:17,968 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 02:19:17,968 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 02:19:17,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 02:19:17,971 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 02:19:18,034 INFO L268 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:19:18,035 INFO L264 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-09-25 02:19:18,035 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:18,035 INFO L268 CegarLoopResult]: For program point L16(line 16) no Hoare annotation was computed. [2020-09-25 02:19:18,035 INFO L268 CegarLoopResult]: For program point L16-1(line 16) no Hoare annotation was computed. [2020-09-25 02:19:18,035 INFO L268 CegarLoopResult]: For program point fooEXIT(lines 15 17) no Hoare annotation was computed. [2020-09-25 02:19:18,035 INFO L264 CegarLoopResult]: At program point fooENTRY(lines 15 17) the Hoare annotation is: (= ~x~0 |old(~x~0)|) [2020-09-25 02:19:18,036 INFO L268 CegarLoopResult]: For program point fooFINAL(lines 15 17) no Hoare annotation was computed. [2020-09-25 02:19:18,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 02:19:18,036 INFO L264 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: (<= ~x~0 0) [2020-09-25 02:19:18,036 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 02:19:18,036 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 02:19:18,037 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 19 27) no Hoare annotation was computed. [2020-09-25 02:19:18,037 INFO L268 CegarLoopResult]: For program point L23(lines 23 24) no Hoare annotation was computed. [2020-09-25 02:19:18,037 INFO L271 CegarLoopResult]: At program point L23-1(line 23) the Hoare annotation is: true [2020-09-25 02:19:18,037 INFO L264 CegarLoopResult]: At program point L21-2(lines 21 25) the Hoare annotation is: (or (<= ~x~0 0) (not (<= |old(~x~0)| 0))) [2020-09-25 02:19:18,037 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 19 27) no Hoare annotation was computed. [2020-09-25 02:19:18,038 INFO L264 CegarLoopResult]: At program point mainENTRY(lines 19 27) the Hoare annotation is: (or (= ~x~0 |old(~x~0)|) (not (<= |old(~x~0)| 0))) [2020-09-25 02:19:18,038 INFO L271 CegarLoopResult]: At program point L24(line 24) the Hoare annotation is: true [2020-09-25 02:19:18,038 INFO L271 CegarLoopResult]: At program point L24-1(lines 21 25) the Hoare annotation is: true [2020-09-25 02:19:18,038 INFO L268 CegarLoopResult]: For program point L22(line 22) no Hoare annotation was computed. [2020-09-25 02:19:18,038 INFO L268 CegarLoopResult]: For program point L22-1(line 22) no Hoare annotation was computed. [2020-09-25 02:19:18,038 INFO L268 CegarLoopResult]: For program point L20(line 20) no Hoare annotation was computed. [2020-09-25 02:19:18,039 INFO L268 CegarLoopResult]: For program point L20-1(line 20) no Hoare annotation was computed. [2020-09-25 02:19:18,039 INFO L271 CegarLoopResult]: At program point __VERIFIER_assertENTRY(lines 3 8) the Hoare annotation is: true [2020-09-25 02:19:18,039 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertEXIT(lines 3 8) no Hoare annotation was computed. [2020-09-25 02:19:18,039 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 02:19:18,039 INFO L268 CegarLoopResult]: For program point L4(lines 4 6) no Hoare annotation was computed. [2020-09-25 02:19:18,040 INFO L268 CegarLoopResult]: For program point __VERIFIER_assertErr0ASSERT_VIOLATIONERROR_FUNCTION(line 5) no Hoare annotation was computed. [2020-09-25 02:19:18,040 INFO L268 CegarLoopResult]: For program point L4-2(lines 3 8) no Hoare annotation was computed. [2020-09-25 02:19:18,052 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:19:18 BoogieIcfgContainer [2020-09-25 02:19:18,052 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 02:19:18,055 INFO L168 Benchmark]: Toolchain (without parser) took 1625.80 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 103.0 MB in the beginning and 116.9 MB in the end (delta: -13.8 MB). Peak memory consumption was 42.8 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:18,056 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 146.8 MB. Free memory was 121.4 MB in the beginning and 121.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. [2020-09-25 02:19:18,057 INFO L168 Benchmark]: CACSL2BoogieTranslator took 284.55 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:18,058 INFO L168 Benchmark]: Boogie Preprocessor took 121.30 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 182.2 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:18,059 INFO L168 Benchmark]: RCFGBuilder took 323.30 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 169.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:18,060 INFO L168 Benchmark]: TraceAbstraction took 888.41 ms. Allocated memory is still 203.4 MB. Free memory was 168.1 MB in the beginning and 116.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-25 02:19:18,064 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 146.8 MB. Free memory was 121.4 MB in the beginning and 121.0 MB in the end (delta: 419.7 kB). Peak memory consumption was 419.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 284.55 ms. Allocated memory is still 146.8 MB. Free memory was 102.6 MB in the beginning and 93.2 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 121.30 ms. Allocated memory was 146.8 MB in the beginning and 203.4 MB in the end (delta: 56.6 MB). Free memory was 93.2 MB in the beginning and 182.2 MB in the end (delta: -89.0 MB). Peak memory consumption was 10.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 323.30 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 169.1 MB in the end (delta: 13.1 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 888.41 ms. Allocated memory is still 203.4 MB. Free memory was 168.1 MB in the beginning and 116.9 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 5]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - InvariantResult [Line: 21]: Loop Invariant Derived loop invariant: 1 - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 0.6s, OverallIterations: 2, TraceHistogramMax: 1, AutomataDifference: 0.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 53 SDtfs, 17 SDslu, 79 SDs, 0 SdLazy, 21 SolverSat, 9 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, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 10 LocationsWithAnnotation, 12 PreInvPairs, 13 NumberOfFragments, 30 HoareAnnotationTreeSize, 12 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 10 FomulaSimplificationsInter, 22 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 26 NumberOfCodeBlocks, 26 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 24 ConstructedInterpolants, 0 QuantifiedInterpolants, 408 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...