/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/McCarthy91-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:28:58,835 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:58,839 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:58,866 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:58,866 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:58,867 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:58,869 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:58,871 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:58,873 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:58,873 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:58,874 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:58,876 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:58,876 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:58,877 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:58,878 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:58,880 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:58,881 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:58,882 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:58,884 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:58,887 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:58,888 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:58,890 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:58,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:58,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:58,895 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:58,895 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:58,896 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:58,897 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:58,897 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:58,898 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:58,899 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:58,900 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:58,901 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:58,902 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:58,903 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:58,903 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:58,904 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:58,904 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:58,905 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:58,906 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:58,907 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:58,908 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 14:28:58,948 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:58,948 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:58,950 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:58,950 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:58,950 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:58,950 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:58,951 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:58,951 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:58,951 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:58,951 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:58,951 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:58,952 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:58,952 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:58,952 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:58,952 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:58,952 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:58,953 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:58,953 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:58,953 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:58,953 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:58,954 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:58,954 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:58,954 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:58,954 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:58,954 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:58,955 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:58,955 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:58,955 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:58,955 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:58,955 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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;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=SMALLESTAMONGWIDE;tolerance=0.5;log-additional-information=true; [2020-09-25 14:28:59,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:59,456 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:59,461 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:59,463 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:59,463 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:59,465 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/McCarthy91-2.c [2020-09-25 14:28:59,567 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1355a4f0/4572f6f9f1914bd4999d867377dcdfe2/FLAG6f4575071 [2020-09-25 14:29:00,128 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:29:00,129 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/McCarthy91-2.c [2020-09-25 14:29:00,139 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1355a4f0/4572f6f9f1914bd4999d867377dcdfe2/FLAG6f4575071 [2020-09-25 14:29:00,467 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d1355a4f0/4572f6f9f1914bd4999d867377dcdfe2 [2020-09-25 14:29:00,483 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:29:00,489 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:29:00,491 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:00,491 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:29:00,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:29:00,497 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,501 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3666d953 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00, skipping insertion in model container [2020-09-25 14:29:00,501 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,511 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:29:00,537 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:29:00,760 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:00,769 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:29:00,789 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:29:00,809 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:29:00,810 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00 WrapperNode [2020-09-25 14:29:00,810 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:29:00,811 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:29:00,811 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:29:00,811 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:29:00,830 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,830 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,836 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,836 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,843 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,845 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (1/1) ... [2020-09-25 14:29:00,846 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:29:00,847 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:29:00,847 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:29:00,847 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:29:00,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (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 14:29:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:29:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:29:01,022 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-09-25 14:29:01,023 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:29:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:29:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:29:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-09-25 14:29:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:29:01,023 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:29:01,024 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:29:01,237 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:29:01,237 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:29:01,243 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:01 BoogieIcfgContainer [2020-09-25 14:29:01,243 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:29:01,244 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:29:01,245 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:29:01,249 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:29:01,249 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:29:00" (1/3) ... [2020-09-25 14:29:01,250 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e3da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:01, skipping insertion in model container [2020-09-25 14:29:01,250 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:29:00" (2/3) ... [2020-09-25 14:29:01,251 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29e3da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:29:01, skipping insertion in model container [2020-09-25 14:29:01,251 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:29:01" (3/3) ... [2020-09-25 14:29:01,254 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2020-09-25 14:29:01,266 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:29:01,278 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:29:01,311 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:29:01,373 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:29:01,373 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:29:01,374 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:29:01,374 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:29:01,374 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:29:01,374 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:29:01,374 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:29:01,375 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:29:01,401 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 14:29:01,411 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 14:29:01,412 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:01,413 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:01,414 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:01,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:01,422 INFO L82 PathProgramCache]: Analyzing trace with hash 346555185, now seen corresponding path program 1 times [2020-09-25 14:29:01,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:01,433 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [879132578] [2020-09-25 14:29:01,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:01,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:29:01,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:01,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 14:29:01,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:29:01,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:29:01,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:29:01,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:01,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,962 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:01,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:01,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:01,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:01,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:01,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:02,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-25 14:29:02,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:02,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,087 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 14:29:02,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [879132578] [2020-09-25 14:29:02,090 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:02,091 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 14:29:02,092 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1461743854] [2020-09-25 14:29:02,099 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:02,100 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:02,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:02,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:02,123 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-09-25 14:29:02,340 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:02,340 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-25 14:29:02,341 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:29:02,342 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-25 14:29:02,343 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:02,357 INFO L225 Difference]: With dead ends: 46 [2020-09-25 14:29:02,357 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 14:29:02,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:02,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 14:29:02,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 14:29:02,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 14:29:02,418 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-09-25 14:29:02,420 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2020-09-25 14:29:02,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:02,421 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-09-25 14:29:02,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:02,421 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-09-25 14:29:02,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 14:29:02,424 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:02,424 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:02,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:29:02,425 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:02,425 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:02,426 INFO L82 PathProgramCache]: Analyzing trace with hash -1167280018, now seen corresponding path program 1 times [2020-09-25 14:29:02,426 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:02,426 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467415820] [2020-09-25 14:29:02,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:02,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 14:29:02,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 414 [2020-09-25 14:29:02,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 14:29:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 14:29:02,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:29:02,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:02,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:02,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:02,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:02,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 14:29:02,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:02,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:03,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 14:29:03,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:03,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 14:29:03,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:03,200 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 14:29:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:03,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 14:29:03,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:03,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 14:29:03,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:03,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:03,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:03,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:03,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:29:03,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:03,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:03,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:03,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:03,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:03,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 14:29:03,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:03,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:03,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:03,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:03,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:29:03,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:03,369 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:03,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 14:29:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:03,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:03,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:03,444 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 6 proven. 4 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:29:03,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467415820] [2020-09-25 14:29:03,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:03,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 14:29:03,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1209560418] [2020-09-25 14:29:03,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 14:29:03,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:03,459 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 14:29:03,459 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:29:03,460 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 13 states. [2020-09-25 14:29:03,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:03,774 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-09-25 14:29:03,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 14:29:03,775 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-09-25 14:29:03,775 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:03,776 INFO L225 Difference]: With dead ends: 28 [2020-09-25 14:29:03,776 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 14:29:03,778 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=89, Invalid=331, Unknown=0, NotChecked=0, Total=420 [2020-09-25 14:29:03,778 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 14:29:03,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 14:29:03,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 14:29:03,780 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 14:29:03,781 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-25 14:29:03,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:03,781 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 14:29:03,781 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 14:29:03,781 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 14:29:03,782 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 14:29:03,782 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:29:03,786 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 14:29:03,872 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 14:29:03,872 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:29:03,872 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 14:29:03,872 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 14:29:03,873 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 14:29:03,873 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 14:29:03,873 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2020-09-25 14:29:03,873 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 14:29:03,873 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 32) the Hoare annotation is: true [2020-09-25 14:29:03,874 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 14:29:03,875 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-09-25 14:29:03,875 INFO L271 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-09-25 14:29:03,875 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 14:29:03,875 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 14:29:03,876 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2020-09-25 14:29:03,876 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 14:29:03,876 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 14:29:03,876 INFO L268 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-09-25 14:29:03,877 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2020-09-25 14:29:03,877 INFO L264 CegarLoopResult]: At program point L19(line 19) the Hoare annotation is: (and (<= f91_~x 100) (= f91_~x |f91_#in~x|)) [2020-09-25 14:29:03,877 INFO L268 CegarLoopResult]: For program point f91EXIT(lines 15 21) no Hoare annotation was computed. [2020-09-25 14:29:03,877 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 14:29:03,877 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 14:29:03,878 INFO L264 CegarLoopResult]: At program point L19-2(line 19) the Hoare annotation is: (and (<= f91_~x 100) (= f91_~x |f91_#in~x|) (<= |f91_#t~ret0| 101)) [2020-09-25 14:29:03,878 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-09-25 14:29:03,878 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 14:29:03,878 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 14:29:03,878 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 14:29:03,878 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-25 14:29:03,879 INFO L271 CegarLoopResult]: At program point f91ENTRY(lines 15 21) the Hoare annotation is: true [2020-09-25 14:29:03,879 INFO L268 CegarLoopResult]: For program point f91FINAL(lines 15 21) no Hoare annotation was computed. [2020-09-25 14:29:03,889 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 02:29:03 BoogieIcfgContainer [2020-09-25 14:29:03,889 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 14:29:03,898 INFO L168 Benchmark]: Toolchain (without parser) took 3406.83 ms. Allocated memory was 139.5 MB in the beginning and 235.4 MB in the end (delta: 95.9 MB). Free memory was 102.8 MB in the beginning and 126.6 MB in the end (delta: -23.9 MB). Peak memory consumption was 72.1 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:03,902 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 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. [2020-09-25 14:29:03,903 INFO L168 Benchmark]: CACSL2BoogieTranslator took 319.62 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:03,904 INFO L168 Benchmark]: Boogie Preprocessor took 35.85 ms. Allocated memory is still 139.5 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:03,907 INFO L168 Benchmark]: RCFGBuilder took 396.19 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 169.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:03,909 INFO L168 Benchmark]: TraceAbstraction took 2644.66 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.4 MB in the beginning and 126.6 MB in the end (delta: 42.8 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. [2020-09-25 14:29:03,920 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 139.5 MB. Free memory was 121.0 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 319.62 ms. Allocated memory is still 139.5 MB. Free memory was 102.1 MB in the beginning and 92.8 MB in the end (delta: 9.3 MB). Peak memory consumption was 9.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 35.85 ms. Allocated memory is still 139.5 MB. Free memory was 92.8 MB in the beginning and 91.5 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 396.19 ms. Allocated memory was 139.5 MB in the beginning and 202.4 MB in the end (delta: 62.9 MB). Free memory was 91.5 MB in the beginning and 169.4 MB in the end (delta: -77.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2644.66 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 169.4 MB in the beginning and 126.6 MB in the end (delta: 42.8 MB). Peak memory consumption was 75.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 30]: 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 - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.4s, OverallIterations: 2, TraceHistogramMax: 3, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 40 SDtfs, 48 SDslu, 172 SDs, 0 SdLazy, 174 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=31occurred 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, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 23 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.5s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 2 NumberOfCheckSat, 50 ConstructedInterpolants, 0 QuantifiedInterpolants, 4886 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 1 PerfectInterpolantSequences, 9/13 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...