/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=0.2 --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/Addition01-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:17:02,625 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:17:02,629 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:17:02,678 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:17:02,679 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:17:02,691 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:17:02,693 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:17:02,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:17:02,700 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:17:02,701 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:17:02,705 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:17:02,706 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:17:02,707 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:17:02,708 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:17:02,709 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:17:02,713 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:17:02,714 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:17:02,715 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:17:02,717 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:17:02,726 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:17:02,728 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:17:02,731 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:17:02,733 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:17:02,734 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:17:02,737 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:17:02,737 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:17:02,737 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:17:02,741 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:17:02,741 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:17:02,742 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:17:02,743 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:17:02,744 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:17:02,744 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:17:02,746 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:17:02,748 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:17:02,748 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:17:02,749 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:17:02,749 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:17:02,749 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:17:02,750 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:17:02,752 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:17:02,753 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 04:17:02,805 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:17:02,806 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:17:02,808 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:17:02,809 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:17:02,809 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:17:02,809 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:17:02,809 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:17:02,810 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:17:02,810 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:17:02,810 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:17:02,811 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:17:02,811 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:17:02,812 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:17:02,812 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:17:02,812 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:17:02,813 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:17:02,813 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:17:02,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:17:02,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:17:02,814 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:17:02,814 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:17:02,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:17:02,814 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:17:02,815 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:17:02,815 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:17:02,815 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:17:02,815 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:17:02,815 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:17:02,816 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:17:02,816 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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;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=0.2;log-additional-information=true; [2020-09-25 04:17:03,275 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:17:03,293 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:17:03,298 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:17:03,300 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:17:03,300 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:17:03,302 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-25 04:17:03,398 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36086f95f/c571786e348242a9b6cffa09096209db/FLAG4badf1cb7 [2020-09-25 04:17:03,957 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:17:03,958 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Addition01-2.c [2020-09-25 04:17:03,967 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36086f95f/c571786e348242a9b6cffa09096209db/FLAG4badf1cb7 [2020-09-25 04:17:04,303 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/36086f95f/c571786e348242a9b6cffa09096209db [2020-09-25 04:17:04,319 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:17:04,325 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:17:04,328 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:04,328 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:17:04,332 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:17:04,333 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,339 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04, skipping insertion in model container [2020-09-25 04:17:04,339 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,347 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:17:04,370 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:17:04,576 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:04,582 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:17:04,603 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:17:04,618 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:17:04,618 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04 WrapperNode [2020-09-25 04:17:04,618 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:17:04,619 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:17:04,620 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:17:04,620 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:17:04,633 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,634 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,723 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,723 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,737 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,742 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,743 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (1/1) ... [2020-09-25 04:17:04,750 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:17:04,751 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:17:04,751 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:17:04,751 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:17:04,753 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (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 04:17:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:17:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:17:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure addition [2020-09-25 04:17:04,831 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:17:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:17:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:17:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure addition [2020-09-25 04:17:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:17:04,832 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:17:04,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:17:05,107 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:17:05,107 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:17:05,117 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:05 BoogieIcfgContainer [2020-09-25 04:17:05,118 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:17:05,131 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:17:05,131 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:17:05,136 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:17:05,136 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:17:04" (1/3) ... [2020-09-25 04:17:05,137 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266332a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:05, skipping insertion in model container [2020-09-25 04:17:05,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:17:04" (2/3) ... [2020-09-25 04:17:05,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@266332a1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:17:05, skipping insertion in model container [2020-09-25 04:17:05,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:17:05" (3/3) ... [2020-09-25 04:17:05,153 INFO L109 eAbstractionObserver]: Analyzing ICFG Addition01-2.c [2020-09-25 04:17:05,167 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:17:05,177 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:17:05,198 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:17:05,233 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:17:05,233 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:17:05,234 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:17:05,234 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:17:05,235 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:17:05,237 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:17:05,237 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:17:05,237 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:17:05,269 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states. [2020-09-25 04:17:05,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 04:17:05,280 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:05,281 INFO L422 BasicCegarLoop]: trace histogram [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 04:17:05,282 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:05,289 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:05,289 INFO L82 PathProgramCache]: Analyzing trace with hash 935018920, now seen corresponding path program 1 times [2020-09-25 04:17:05,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:05,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1784437847] [2020-09-25 04:17:05,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:05,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 04:17:05,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 223 [2020-09-25 04:17:05,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:05,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 04:17:05,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:17:05,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:05,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:05,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 04:17:05,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:05,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:05,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:05,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:05,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:05,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:05,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:05,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:05,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:05,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:17:05,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:05,858 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 04:17:05,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:05,859 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:05,859 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:05,987 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 04:17:05,988 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1784437847] [2020-09-25 04:17:05,991 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:05,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 04:17:05,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [212687218] [2020-09-25 04:17:06,000 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 04:17:06,001 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:06,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 04:17:06,021 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:17:06,024 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 8 states. [2020-09-25 04:17:06,299 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:06,300 INFO L93 Difference]: Finished difference Result 57 states and 66 transitions. [2020-09-25 04:17:06,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 04:17:06,302 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 24 [2020-09-25 04:17:06,303 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:06,317 INFO L225 Difference]: With dead ends: 57 [2020-09-25 04:17:06,318 INFO L226 Difference]: Without dead ends: 37 [2020-09-25 04:17:06,323 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:17:06,346 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-09-25 04:17:06,380 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 37. [2020-09-25 04:17:06,382 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 04:17:06,383 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 42 transitions. [2020-09-25 04:17:06,386 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 42 transitions. Word has length 24 [2020-09-25 04:17:06,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:06,386 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 42 transitions. [2020-09-25 04:17:06,387 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 04:17:06,387 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 42 transitions. [2020-09-25 04:17:06,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-25 04:17:06,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:06,393 INFO L422 BasicCegarLoop]: trace histogram [1, 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 04:17:06,393 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:17:06,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:06,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:06,394 INFO L82 PathProgramCache]: Analyzing trace with hash 2135506668, now seen corresponding path program 1 times [2020-09-25 04:17:06,394 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:06,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1295632417] [2020-09-25 04:17:06,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:06,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:06,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:06,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:06,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:06,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 04:17:06,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:17:06,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 04:17:06,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:06,633 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 04:17:06,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:17:06,634 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:17:06,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:06,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:06,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:06,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:06,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:06,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:06,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:06,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:06,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:06,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:06,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:06,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:06,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:06,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:06,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:06,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:06,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:17:06,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:06,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:17:06,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:06,670 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:17:06,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-09-25 04:17:06,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:17:06,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:06,690 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 04:17:06,690 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1295632417] [2020-09-25 04:17:06,690 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:17:06,691 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:17:06,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1887999098] [2020-09-25 04:17:06,693 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:17:06,693 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:06,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:17:06,694 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:17:06,694 INFO L87 Difference]: Start difference. First operand 37 states and 42 transitions. Second operand 4 states. [2020-09-25 04:17:06,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:06,722 INFO L93 Difference]: Finished difference Result 53 states and 61 transitions. [2020-09-25 04:17:06,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-25 04:17:06,723 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-25 04:17:06,723 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:06,725 INFO L225 Difference]: With dead ends: 53 [2020-09-25 04:17:06,725 INFO L226 Difference]: Without dead ends: 39 [2020-09-25 04:17:06,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:17:06,727 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-25 04:17:06,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-25 04:17:06,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-25 04:17:06,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 41 transitions. [2020-09-25 04:17:06,736 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 41 transitions. Word has length 25 [2020-09-25 04:17:06,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:06,737 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 41 transitions. [2020-09-25 04:17:06,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:17:06,737 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 41 transitions. [2020-09-25 04:17:06,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 04:17:06,739 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:06,739 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1] [2020-09-25 04:17:06,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:17:06,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:06,740 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:06,740 INFO L82 PathProgramCache]: Analyzing trace with hash 1044754306, now seen corresponding path program 1 times [2020-09-25 04:17:06,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:06,741 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583035606] [2020-09-25 04:17:06,741 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:06,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:06,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:06,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:06,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 04:17:06,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:06,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 04:17:06,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:06,995 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:06,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 04:17:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 04:17:06,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-25 04:17:06,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:07,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:07,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:07,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:07,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:07,054 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:07,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:07,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:17:07,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:07,055 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:07,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:07,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:07,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:07,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:07,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:07,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 04:17:07,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:07,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 04:17:07,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:07,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:07,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 04:17:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:07,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 04:17:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:07,185 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:07,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:07,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:07,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:07,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:07,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 04:17:07,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:07,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 04:17:07,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:07,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:07,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:07,270 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 04:17:07,271 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583035606] [2020-09-25 04:17:07,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:07,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 04:17:07,272 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [477021263] [2020-09-25 04:17:07,272 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 04:17:07,273 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:07,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 04:17:07,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=70, Unknown=0, NotChecked=0, Total=90 [2020-09-25 04:17:07,274 INFO L87 Difference]: Start difference. First operand 37 states and 41 transitions. Second operand 10 states. [2020-09-25 04:17:07,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:07,517 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-09-25 04:17:07,517 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 04:17:07,518 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 34 [2020-09-25 04:17:07,518 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:07,519 INFO L225 Difference]: With dead ends: 48 [2020-09-25 04:17:07,520 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:17:07,521 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=56, Invalid=184, Unknown=0, NotChecked=0, Total=240 [2020-09-25 04:17:07,521 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:17:07,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 04:17:07,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 04:17:07,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 44 transitions. [2020-09-25 04:17:07,530 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 44 transitions. Word has length 34 [2020-09-25 04:17:07,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:07,530 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 44 transitions. [2020-09-25 04:17:07,530 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 04:17:07,531 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 44 transitions. [2020-09-25 04:17:07,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 04:17:07,532 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:07,533 INFO L422 BasicCegarLoop]: trace histogram [2, 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, 1, 1, 1, 1, 1] [2020-09-25 04:17:07,533 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:17:07,533 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:07,534 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:07,534 INFO L82 PathProgramCache]: Analyzing trace with hash -1793410391, now seen corresponding path program 1 times [2020-09-25 04:17:07,534 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:07,535 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [487454822] [2020-09-25 04:17:07,535 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:07,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:07,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:07,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:08,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 04:17:08,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:08,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 752 [2020-09-25 04:17:08,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:08,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:17:08,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:08,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:08,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:08,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:08,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:08,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:08,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:08,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:08,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:08,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:08,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:08,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:08,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:08,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:08,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:08,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:08,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:08,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-09-25 04:17:08,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:08,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:08,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:17:08,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:17:08,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:08,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:17:08,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:08,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:08,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:08,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:08,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 04:17:08,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:08,496 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:08,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:08,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:08,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:08,502 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:17:08,504 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [487454822] [2020-09-25 04:17:08,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:08,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:17:08,505 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1180163542] [2020-09-25 04:17:08,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:08,507 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:08,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:08,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:08,508 INFO L87 Difference]: Start difference. First operand 40 states and 44 transitions. Second operand 5 states. [2020-09-25 04:17:08,581 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:08,581 INFO L93 Difference]: Finished difference Result 48 states and 53 transitions. [2020-09-25 04:17:08,582 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:17:08,582 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-25 04:17:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:08,583 INFO L225 Difference]: With dead ends: 48 [2020-09-25 04:17:08,585 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 04:17:08,585 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:17:08,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 04:17:08,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 04:17:08,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 04:17:08,599 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 47 transitions. [2020-09-25 04:17:08,600 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 47 transitions. Word has length 35 [2020-09-25 04:17:08,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:08,600 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 47 transitions. [2020-09-25 04:17:08,600 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:08,600 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 47 transitions. [2020-09-25 04:17:08,604 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-25 04:17:08,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:17:08,605 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:17:08,605 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:17:08,606 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:17:08,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:17:08,606 INFO L82 PathProgramCache]: Analyzing trace with hash -1069722645, now seen corresponding path program 1 times [2020-09-25 04:17:08,606 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:17:08,607 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1606027256] [2020-09-25 04:17:08,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:17:08,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:08,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:08,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:09,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:09,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:09,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 04:17:10,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:17:10,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1775 [2020-09-25 04:17:10,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,403 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-25 04:17:10,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:10,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:17:10,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:17:10,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 04:17:10,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,415 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:17:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:10,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:17:10,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 04:17:10,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:10,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:10,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 04:17:10,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 04:17:10,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 525 [2020-09-25 04:17:10,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:10,949 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:10,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-09-25 04:17:10,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 04:17:10,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:10,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 04:17:10,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:10,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:11,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:17:11,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 04:17:11,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 04:17:11,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:11,071 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:17:11,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 04:17:11,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:17:11,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:11,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 04:17:11,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:17:11,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:17:11,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:17:11,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 04:17:11,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:17:11,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 04:17:11,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:17:11,111 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:17:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:17:11,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:17:11,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:17:11,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:17:11,119 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 04:17:11,120 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1606027256] [2020-09-25 04:17:11,120 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:17:11,120 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:17:11,120 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [507628298] [2020-09-25 04:17:11,121 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:17:11,121 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:17:11,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:17:11,122 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:17:11,122 INFO L87 Difference]: Start difference. First operand 42 states and 47 transitions. Second operand 5 states. [2020-09-25 04:17:11,194 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:17:11,194 INFO L93 Difference]: Finished difference Result 49 states and 56 transitions. [2020-09-25 04:17:11,196 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:17:11,196 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 45 [2020-09-25 04:17:11,196 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:17:11,197 INFO L225 Difference]: With dead ends: 49 [2020-09-25 04:17:11,197 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:17:11,200 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:17:11,200 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:17:11,200 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:17:11,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:17:11,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:17:11,202 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 45 [2020-09-25 04:17:11,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:17:11,202 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:17:11,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:17:11,202 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:17:11,202 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:17:11,203 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:17:11,206 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:17:11,328 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 04:17:11,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:17:11,328 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:17:11,329 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:17:11,329 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:17:11,329 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:17:11,329 INFO L268 CegarLoopResult]: For program point L33(line 33) no Hoare annotation was computed. [2020-09-25 04:17:11,329 INFO L268 CegarLoopResult]: For program point L33-1(line 33) no Hoare annotation was computed. [2020-09-25 04:17:11,329 INFO L268 CegarLoopResult]: For program point L31(line 31) no Hoare annotation was computed. [2020-09-25 04:17:11,329 INFO L268 CegarLoopResult]: For program point L33-2(line 33) no Hoare annotation was computed. [2020-09-25 04:17:11,330 INFO L268 CegarLoopResult]: For program point L27(line 27) no Hoare annotation was computed. [2020-09-25 04:17:11,330 INFO L268 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-09-25 04:17:11,330 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 26 45) no Hoare annotation was computed. [2020-09-25 04:17:11,330 INFO L268 CegarLoopResult]: For program point mainFINAL(lines 26 45) no Hoare annotation was computed. [2020-09-25 04:17:11,330 INFO L268 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-09-25 04:17:11,330 INFO L268 CegarLoopResult]: For program point L34(lines 34 38) no Hoare annotation was computed. [2020-09-25 04:17:11,331 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 43) no Hoare annotation was computed. [2020-09-25 04:17:11,331 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 26 45) the Hoare annotation is: true [2020-09-25 04:17:11,331 INFO L268 CegarLoopResult]: For program point L28(lines 28 32) no Hoare annotation was computed. [2020-09-25 04:17:11,331 INFO L268 CegarLoopResult]: For program point L43(line 43) no Hoare annotation was computed. [2020-09-25 04:17:11,331 INFO L268 CegarLoopResult]: For program point L41(line 41) no Hoare annotation was computed. [2020-09-25 04:17:11,331 INFO L264 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (<= 0 main_~n~0) [2020-09-25 04:17:11,331 INFO L268 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-09-25 04:17:11,332 INFO L268 CegarLoopResult]: For program point L37(line 37) no Hoare annotation was computed. [2020-09-25 04:17:11,332 INFO L268 CegarLoopResult]: For program point L39-2(line 39) no Hoare annotation was computed. [2020-09-25 04:17:11,332 INFO L268 CegarLoopResult]: For program point L39-3(line 39) no Hoare annotation was computed. [2020-09-25 04:17:11,332 INFO L268 CegarLoopResult]: For program point additionFINAL(lines 13 23) no Hoare annotation was computed. [2020-09-25 04:17:11,335 INFO L264 CegarLoopResult]: At program point L21(line 21) the Hoare annotation is: (and (<= (+ addition_~n 1) 0) (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m)) [2020-09-25 04:17:11,335 INFO L268 CegarLoopResult]: For program point L20(lines 20 22) no Hoare annotation was computed. [2020-09-25 04:17:11,335 INFO L268 CegarLoopResult]: For program point L21-1(line 21) no Hoare annotation was computed. [2020-09-25 04:17:11,335 INFO L268 CegarLoopResult]: For program point L21-2(line 21) no Hoare annotation was computed. [2020-09-25 04:17:11,335 INFO L264 CegarLoopResult]: At program point L18(line 18) the Hoare annotation is: (and (= |addition_#in~n| addition_~n) (= |addition_#in~m| addition_~m) (<= 1 addition_~n)) [2020-09-25 04:17:11,335 INFO L268 CegarLoopResult]: For program point L21-3(line 21) no Hoare annotation was computed. [2020-09-25 04:17:11,335 INFO L268 CegarLoopResult]: For program point L17(lines 17 19) no Hoare annotation was computed. [2020-09-25 04:17:11,336 INFO L268 CegarLoopResult]: For program point L18-1(line 18) no Hoare annotation was computed. [2020-09-25 04:17:11,336 INFO L268 CegarLoopResult]: For program point L18-2(line 18) no Hoare annotation was computed. [2020-09-25 04:17:11,336 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 04:17:11,336 INFO L268 CegarLoopResult]: For program point L18-3(line 18) no Hoare annotation was computed. [2020-09-25 04:17:11,336 INFO L271 CegarLoopResult]: At program point additionENTRY(lines 13 23) the Hoare annotation is: true [2020-09-25 04:17:11,336 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-25 04:17:11,337 INFO L268 CegarLoopResult]: For program point L13(lines 13 23) no Hoare annotation was computed. [2020-09-25 04:17:11,337 INFO L268 CegarLoopResult]: For program point additionEXIT(lines 13 23) no Hoare annotation was computed. [2020-09-25 04:17:11,347 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:17:11 BoogieIcfgContainer [2020-09-25 04:17:11,347 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:17:11,352 INFO L168 Benchmark]: Toolchain (without parser) took 7028.56 ms. Allocated memory was 147.8 MB in the beginning and 274.7 MB in the end (delta: 126.9 MB). Free memory was 104.1 MB in the beginning and 157.4 MB in the end (delta: -53.3 MB). Peak memory consumption was 73.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:11,353 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:17:11,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 291.40 ms. Allocated memory is still 147.8 MB. Free memory was 103.5 MB in the beginning and 93.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:11,360 INFO L168 Benchmark]: Boogie Preprocessor took 131.36 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.7 MB in the beginning and 183.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:11,361 INFO L168 Benchmark]: RCFGBuilder took 366.86 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 168.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:11,362 INFO L168 Benchmark]: TraceAbstraction took 6216.89 ms. Allocated memory was 204.5 MB in the beginning and 274.7 MB in the end (delta: 70.3 MB). Free memory was 168.8 MB in the beginning and 157.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. [2020-09-25 04:17:11,375 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 147.8 MB. Free memory was 122.5 MB in the beginning and 122.3 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 291.40 ms. Allocated memory is still 147.8 MB. Free memory was 103.5 MB in the beginning and 93.7 MB in the end (delta: 9.8 MB). Peak memory consumption was 9.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 131.36 ms. Allocated memory was 147.8 MB in the beginning and 204.5 MB in the end (delta: 56.6 MB). Free memory was 93.7 MB in the beginning and 183.2 MB in the end (delta: -89.5 MB). Peak memory consumption was 10.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 366.86 ms. Allocated memory is still 204.5 MB. Free memory was 183.2 MB in the beginning and 168.8 MB in the end (delta: 14.4 MB). Peak memory consumption was 14.4 MB. Max. memory is 7.1 GB. * TraceAbstraction took 6216.89 ms. Allocated memory was 204.5 MB in the beginning and 274.7 MB in the end (delta: 70.3 MB). Free memory was 168.8 MB in the beginning and 157.4 MB in the end (delta: 11.4 MB). Peak memory consumption was 81.6 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 43]: 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, 42 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 5.9s, OverallIterations: 5, TraceHistogramMax: 3, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.1s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 161 SDtfs, 120 SDslu, 368 SDs, 0 SdLazy, 290 SolverSat, 18 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 76 GetRequests, 41 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=42occurred 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, 5 MinimizatonAttempts, 4 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 8 LocationsWithAnnotation, 14 PreInvPairs, 14 NumberOfFragments, 30 HoareAnnotationTreeSize, 14 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 8 FomulaSimplificationsInter, 15 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 4.7s InterpolantComputationTime, 163 NumberOfCodeBlocks, 163 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 158 ConstructedInterpolants, 0 QuantifiedInterpolants, 14299 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 2 PerfectInterpolantSequences, 22/26 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...