/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --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 07:43:19,867 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:43:19,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:43:19,920 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:43:19,920 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:43:19,931 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:43:19,934 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:43:19,937 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:43:19,940 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:43:19,943 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:43:19,945 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:43:19,946 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:43:19,946 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:43:19,949 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:43:19,953 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:43:19,955 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:43:19,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:43:19,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:43:19,959 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:43:19,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:43:19,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:43:19,968 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:43:19,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:43:19,969 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:43:19,974 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:43:19,975 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:43:19,975 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:43:19,978 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:43:19,978 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:43:19,980 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:43:19,981 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:43:19,982 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:43:19,982 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:43:19,983 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:43:19,985 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:43:19,985 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:43:19,986 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:43:19,986 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:43:19,986 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:43:19,987 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:43:19,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:43:19,990 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 07:43:20,040 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:43:20,040 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:43:20,042 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:43:20,043 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:43:20,043 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:43:20,043 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:43:20,044 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:43:20,044 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:43:20,044 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:43:20,044 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:43:20,045 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:43:20,046 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:43:20,046 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:43:20,046 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:43:20,047 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:43:20,047 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:43:20,047 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:43:20,047 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:43:20,047 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:43:20,048 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:43:20,048 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:43:20,048 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:43:20,048 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:43:20,049 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:43:20,049 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:43:20,049 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:43:20,049 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:43:20,049 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:43:20,050 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:43:20,050 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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;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=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:43:20,492 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:43:20,519 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:43:20,526 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:43:20,528 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:43:20,529 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:43:20,530 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/McCarthy91-2.c [2020-09-25 07:43:20,623 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5bf8f9cc/3fb3caffc4be4afcb07d57ecebd2b18f/FLAG30a6999e1 [2020-09-25 07:43:21,177 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:43:21,178 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/McCarthy91-2.c [2020-09-25 07:43:21,186 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5bf8f9cc/3fb3caffc4be4afcb07d57ecebd2b18f/FLAG30a6999e1 [2020-09-25 07:43:21,512 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b5bf8f9cc/3fb3caffc4be4afcb07d57ecebd2b18f [2020-09-25 07:43:21,528 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:43:21,535 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:43:21,536 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:21,536 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:43:21,543 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:43:21,544 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,548 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5d084142 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21, skipping insertion in model container [2020-09-25 07:43:21,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,556 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:43:21,577 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:43:21,798 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:21,804 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:43:21,822 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:43:21,840 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:43:21,842 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21 WrapperNode [2020-09-25 07:43:21,842 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:43:21,843 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:43:21,843 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:43:21,844 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:43:21,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,875 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,880 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,882 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,883 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (1/1) ... [2020-09-25 07:43:21,885 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:43:21,886 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:43:21,886 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:43:21,886 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:43:21,887 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (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 07:43:22,049 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:43:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:43:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure f91 [2020-09-25 07:43:22,050 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:43:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:43:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:43:22,050 INFO L130 BoogieDeclarations]: Found specification of procedure f91 [2020-09-25 07:43:22,051 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:43:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:43:22,052 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:43:22,298 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:43:22,298 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 07:43:22,304 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:22 BoogieIcfgContainer [2020-09-25 07:43:22,305 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:43:22,317 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:43:22,317 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:43:22,323 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:43:22,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:43:21" (1/3) ... [2020-09-25 07:43:22,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eedf82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:22, skipping insertion in model container [2020-09-25 07:43:22,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:43:21" (2/3) ... [2020-09-25 07:43:22,326 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3eedf82d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:43:22, skipping insertion in model container [2020-09-25 07:43:22,326 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:43:22" (3/3) ... [2020-09-25 07:43:22,328 INFO L109 eAbstractionObserver]: Analyzing ICFG McCarthy91-2.c [2020-09-25 07:43:22,355 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:43:22,388 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:43:22,409 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:43:22,440 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:43:22,440 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:43:22,440 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:43:22,441 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:43:22,441 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:43:22,441 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:43:22,441 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:43:22,441 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:43:22,463 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 07:43:22,470 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 07:43:22,470 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:22,472 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 07:43:22,472 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:22,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:22,479 INFO L82 PathProgramCache]: Analyzing trace with hash 346555185, now seen corresponding path program 1 times [2020-09-25 07:43:22,488 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:22,489 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [610560727] [2020-09-25 07:43:22,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:22,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:22,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:22,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 07:43:22,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:22,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 07:43:22,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:22,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:22,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 07:43:22,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 07:43:22,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:43:23,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:23,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:23,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:23,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:23,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:23,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:23,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:23,024 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:23,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:23,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:23,025 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:23,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 07:43:23,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:23,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:23,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:23,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:23,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 07:43:23,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:23,113 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:23,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:23,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:23,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:23,180 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 07:43:23,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [610560727] [2020-09-25 07:43:23,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:43:23,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:43:23,185 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2023131429] [2020-09-25 07:43:23,192 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:43:23,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:23,211 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:43:23,212 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:43:23,215 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-09-25 07:43:23,435 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:23,436 INFO L93 Difference]: Finished difference Result 46 states and 51 transitions. [2020-09-25 07:43:23,436 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:43:23,438 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-09-25 07:43:23,439 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:23,451 INFO L225 Difference]: With dead ends: 46 [2020-09-25 07:43:23,452 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 07:43:23,456 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 07:43:23,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 07:43:23,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 07:43:23,508 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 07:43:23,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 31 transitions. [2020-09-25 07:43:23,512 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 31 transitions. Word has length 18 [2020-09-25 07:43:23,512 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:23,512 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 31 transitions. [2020-09-25 07:43:23,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:43:23,513 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 31 transitions. [2020-09-25 07:43:23,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 07:43:23,516 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:43:23,516 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 07:43:23,516 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:43:23,517 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:43:23,517 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:43:23,517 INFO L82 PathProgramCache]: Analyzing trace with hash -1167280018, now seen corresponding path program 1 times [2020-09-25 07:43:23,518 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:43:23,518 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [816626595] [2020-09-25 07:43:23,518 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:43:23,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:23,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:23,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:23,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 07:43:23,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:23,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 439 [2020-09-25 07:43:23,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:23,976 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 07:43:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 07:43:23,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 07:43:23,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:43:24,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 07:43:24,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 07:43:24,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:43:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:24,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:43:24,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 07:43:24,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 07:43:24,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 07:43:24,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-09-25 07:43:24,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,229 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 07:43:24,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:24,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 07:43:24,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 07:43:24,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:24,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 07:43:24,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:43:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-25 07:43:24,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:43:24,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:43:24,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:43:24,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 07:43:24,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:43:24,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 07:43:24,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:43:24,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:43:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:43:24,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:43:24,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:43:24,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:43:24,505 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 07:43:24,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [816626595] [2020-09-25 07:43:24,506 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:43:24,506 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 07:43:24,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682249065] [2020-09-25 07:43:24,509 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 07:43:24,509 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:43:24,511 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 07:43:24,513 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-09-25 07:43:24,513 INFO L87 Difference]: Start difference. First operand 28 states and 31 transitions. Second operand 13 states. [2020-09-25 07:43:24,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:43:24,828 INFO L93 Difference]: Finished difference Result 28 states and 31 transitions. [2020-09-25 07:43:24,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:43:24,829 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 34 [2020-09-25 07:43:24,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:43:24,830 INFO L225 Difference]: With dead ends: 28 [2020-09-25 07:43:24,830 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 07:43:24,832 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=88, Invalid=332, Unknown=0, NotChecked=0, Total=420 [2020-09-25 07:43:24,832 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 07:43:24,832 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 07:43:24,832 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 07:43:24,833 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 07:43:24,833 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 34 [2020-09-25 07:43:24,834 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:43:24,834 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 07:43:24,834 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 07:43:24,834 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 07:43:24,836 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 07:43:24,836 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:43:24,839 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 07:43:24,927 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 07:43:24,927 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:43:24,927 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 07:43:24,927 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 07:43:24,928 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 07:43:24,928 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 07:43:24,928 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 30) no Hoare annotation was computed. [2020-09-25 07:43:24,928 INFO L268 CegarLoopResult]: For program point L30(line 30) no Hoare annotation was computed. [2020-09-25 07:43:24,928 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 24 32) the Hoare annotation is: true [2020-09-25 07:43:24,928 INFO L268 CegarLoopResult]: For program point L28(line 28) no Hoare annotation was computed. [2020-09-25 07:43:24,928 INFO L268 CegarLoopResult]: For program point L27(lines 27 31) no Hoare annotation was computed. [2020-09-25 07:43:24,928 INFO L271 CegarLoopResult]: At program point L26(line 26) the Hoare annotation is: true [2020-09-25 07:43:24,929 INFO L268 CegarLoopResult]: For program point L25(line 25) no Hoare annotation was computed. [2020-09-25 07:43:24,929 INFO L268 CegarLoopResult]: For program point L26-1(line 26) no Hoare annotation was computed. [2020-09-25 07:43:24,929 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 24 32) no Hoare annotation was computed. [2020-09-25 07:43:24,929 INFO L268 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-09-25 07:43:24,929 INFO L268 CegarLoopResult]: For program point L26-2(line 26) no Hoare annotation was computed. [2020-09-25 07:43:24,929 INFO L268 CegarLoopResult]: For program point L26-3(line 26) no Hoare annotation was computed. [2020-09-25 07:43:24,929 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 24 32) no Hoare annotation was computed. [2020-09-25 07:43:24,929 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 07:43:24,930 INFO L268 CegarLoopResult]: For program point f91EXIT(lines 15 21) no Hoare annotation was computed. [2020-09-25 07:43:24,930 INFO L268 CegarLoopResult]: For program point L19-1(line 19) no Hoare annotation was computed. [2020-09-25 07:43:24,930 INFO L268 CegarLoopResult]: For program point L17(line 17) no Hoare annotation was computed. [2020-09-25 07:43:24,930 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 07:43:24,930 INFO L268 CegarLoopResult]: For program point L16(lines 16 20) no Hoare annotation was computed. [2020-09-25 07:43:24,930 INFO L268 CegarLoopResult]: For program point L19-3(line 19) no Hoare annotation was computed. [2020-09-25 07:43:24,930 INFO L268 CegarLoopResult]: For program point L19-4(line 19) no Hoare annotation was computed. [2020-09-25 07:43:24,930 INFO L268 CegarLoopResult]: For program point L19-5(line 19) no Hoare annotation was computed. [2020-09-25 07:43:24,930 INFO L268 CegarLoopResult]: For program point L19-6(line 19) no Hoare annotation was computed. [2020-09-25 07:43:24,930 INFO L271 CegarLoopResult]: At program point f91ENTRY(lines 15 21) the Hoare annotation is: true [2020-09-25 07:43:24,931 INFO L268 CegarLoopResult]: For program point f91FINAL(lines 15 21) no Hoare annotation was computed. [2020-09-25 07:43:24,937 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 07:43:24 BoogieIcfgContainer [2020-09-25 07:43:24,937 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 07:43:24,941 INFO L168 Benchmark]: Toolchain (without parser) took 3409.32 ms. Allocated memory was 141.6 MB in the beginning and 233.8 MB in the end (delta: 92.3 MB). Free memory was 105.3 MB in the beginning and 119.3 MB in the end (delta: -14.0 MB). Peak memory consumption was 78.3 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:24,942 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 07:43:24,943 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.14 ms. Allocated memory is still 141.6 MB. Free memory was 104.7 MB in the beginning and 95.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:24,943 INFO L168 Benchmark]: Boogie Preprocessor took 42.04 ms. Allocated memory is still 141.6 MB. Free memory was 95.1 MB in the beginning and 93.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:24,945 INFO L168 Benchmark]: RCFGBuilder took 419.33 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 172.6 MB in the end (delta: -78.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:24,946 INFO L168 Benchmark]: TraceAbstraction took 2620.34 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 172.0 MB in the beginning and 119.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 81.5 MB. Max. memory is 7.1 GB. [2020-09-25 07:43:24,950 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.20 ms. Allocated memory is still 141.6 MB. Free memory was 123.0 MB in the beginning and 122.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.14 ms. Allocated memory is still 141.6 MB. Free memory was 104.7 MB in the beginning and 95.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 42.04 ms. Allocated memory is still 141.6 MB. Free memory was 95.1 MB in the beginning and 93.7 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 419.33 ms. Allocated memory was 141.6 MB in the beginning and 205.0 MB in the end (delta: 63.4 MB). Free memory was 93.7 MB in the beginning and 172.6 MB in the end (delta: -78.9 MB). Peak memory consumption was 12.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2620.34 ms. Allocated memory was 205.0 MB in the beginning and 233.8 MB in the end (delta: 28.8 MB). Free memory was 172.0 MB in the beginning and 119.3 MB in the end (delta: 52.7 MB). Peak memory consumption was 81.5 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, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 39 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 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...