/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-simple/id_b3_o5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:20:02,510 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:20:02,514 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:20:02,541 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:20:02,541 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:20:02,543 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:20:02,544 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:20:02,546 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:20:02,548 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:20:02,550 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:20:02,551 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:20:02,552 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:20:02,553 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:20:02,554 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:20:02,555 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:20:02,560 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:20:02,562 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:20:02,566 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:20:02,568 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:20:02,573 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:20:02,577 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:20:02,582 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:20:02,583 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:20:02,585 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:20:02,589 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:20:02,589 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:20:02,590 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:20:02,591 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:20:02,591 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:20:02,595 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:20:02,596 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:20:02,597 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:20:02,598 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:20:02,600 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:20:02,601 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:20:02,602 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:20:02,603 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:20:02,603 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:20:02,603 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:20:02,604 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:20:02,606 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:20:02,607 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 04:20:02,662 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:20:02,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:20:02,665 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:20:02,666 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:20:02,666 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:20:02,666 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:20:02,666 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:20:02,667 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:20:02,667 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:20:02,667 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:20:02,668 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:20:02,668 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:20:02,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:20:02,669 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:20:02,669 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:20:02,670 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:20:02,670 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:20:02,670 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:20:02,670 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:20:02,670 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:20:02,671 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:20:02,671 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:20:02,671 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:20:02,671 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:20:02,672 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:20:02,672 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:20:02,672 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:20:02,672 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:20:02,672 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:20:02,673 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 04:20:03,152 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:20:03,179 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:20:03,184 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:20:03,188 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:20:03,189 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:20:03,190 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-25 04:20:03,292 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb1a6671b/f6168a57ec7a4cacb4c7cb3462819f9c/FLAGca6160a69 [2020-09-25 04:20:03,814 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:20:03,815 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_b3_o5-2.c [2020-09-25 04:20:03,824 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb1a6671b/f6168a57ec7a4cacb4c7cb3462819f9c/FLAGca6160a69 [2020-09-25 04:20:04,164 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cb1a6671b/f6168a57ec7a4cacb4c7cb3462819f9c [2020-09-25 04:20:04,182 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:20:04,188 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:20:04,190 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:04,190 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:20:04,194 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:20:04,196 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,201 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fff794b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04, skipping insertion in model container [2020-09-25 04:20:04,201 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,210 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:20:04,239 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:20:04,451 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:04,457 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:20:04,478 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:20:04,495 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:20:04,497 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04 WrapperNode [2020-09-25 04:20:04,497 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:20:04,498 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:20:04,498 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:20:04,498 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:20:04,512 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,514 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,520 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,520 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,527 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,530 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,532 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (1/1) ... [2020-09-25 04:20:04,538 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:20:04,538 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:20:04,539 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:20:04,539 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:20:04,540 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (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 04:20:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:20:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:20:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 04:20:04,706 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:20:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:20:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:20:04,707 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 04:20:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:20:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:20:04,708 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:20:04,951 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:20:04,952 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 04:20:04,958 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:04 BoogieIcfgContainer [2020-09-25 04:20:04,959 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:20:04,973 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:20:04,973 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:20:04,978 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:20:04,978 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:20:04" (1/3) ... [2020-09-25 04:20:04,979 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a4666c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:04, skipping insertion in model container [2020-09-25 04:20:04,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:20:04" (2/3) ... [2020-09-25 04:20:04,980 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54a4666c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:20:04, skipping insertion in model container [2020-09-25 04:20:04,980 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:20:04" (3/3) ... [2020-09-25 04:20:04,983 INFO L109 eAbstractionObserver]: Analyzing ICFG id_b3_o5-2.c [2020-09-25 04:20:05,014 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:20:05,025 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:20:05,052 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:20:05,082 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:20:05,082 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:20:05,082 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:20:05,082 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:20:05,082 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:20:05,083 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:20:05,083 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:20:05,083 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:20:05,103 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 04:20:05,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 04:20:05,111 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:05,112 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 04:20:05,113 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:05,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:05,119 INFO L82 PathProgramCache]: Analyzing trace with hash 856871792, now seen corresponding path program 1 times [2020-09-25 04:20:05,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:05,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856971038] [2020-09-25 04:20:05,130 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:05,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:05,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:05,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:05,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 04:20:05,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:05,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 04:20:05,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:05,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:20:05,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:05,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:20:05,415 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:05,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:05,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:05,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:05,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:05,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:05,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:05,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:05,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:20:05,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:05,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:05,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:05,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:05,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:05,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:20:05,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:05,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:05,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:05,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 04:20:05,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:05,477 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 04:20:05,478 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856971038] [2020-09-25 04:20:05,481 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:20:05,481 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:20:05,482 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548443321] [2020-09-25 04:20:05,489 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:20:05,490 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:05,518 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:20:05,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:20:05,522 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 5 states. [2020-09-25 04:20:05,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:05,615 INFO L93 Difference]: Finished difference Result 44 states and 48 transitions. [2020-09-25 04:20:05,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:05,618 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 04:20:05,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:05,633 INFO L225 Difference]: With dead ends: 44 [2020-09-25 04:20:05,633 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 04:20:05,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 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 04:20:05,659 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 04:20:05,691 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 04:20:05,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:20:05,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-25 04:20:05,696 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 18 [2020-09-25 04:20:05,697 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:05,697 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-25 04:20:05,697 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:20:05,698 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-25 04:20:05,700 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 04:20:05,700 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:05,700 INFO L422 BasicCegarLoop]: trace histogram [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 04:20:05,701 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:20:05,701 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:05,702 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:05,702 INFO L82 PathProgramCache]: Analyzing trace with hash 1774609951, now seen corresponding path program 1 times [2020-09-25 04:20:05,702 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:05,703 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1927003938] [2020-09-25 04:20:05,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:05,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:05,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:06,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:20:06,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:06,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 615 [2020-09-25 04:20:06,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:06,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 31 [2020-09-25 04:20:06,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 04:20:06,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-25 04:20:06,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:06,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:06,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:06,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:06,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 04:20:06,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:06,393 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:06,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:06,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:06,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:06,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-25 04:20:06,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:20:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,671 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:06,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:06,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:06,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 255 [2020-09-25 04:20:06,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:06,672 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:06,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 04:20:06,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:06,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:20:06,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:06,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:06,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:06,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:06,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:06,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:20:06,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:06,721 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:06,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:06,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:06,733 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:20:06,734 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1927003938] [2020-09-25 04:20:06,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:20:06,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 04:20:06,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575876958] [2020-09-25 04:20:06,748 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:20:06,748 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:06,749 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:20:06,749 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:20:06,749 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 5 states. [2020-09-25 04:20:06,811 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:06,811 INFO L93 Difference]: Finished difference Result 36 states and 38 transitions. [2020-09-25 04:20:06,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:20:06,812 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 28 [2020-09-25 04:20:06,812 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:06,813 INFO L225 Difference]: With dead ends: 36 [2020-09-25 04:20:06,814 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 04:20:06,815 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 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 04:20:06,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 04:20:06,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 04:20:06,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 04:20:06,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 30 transitions. [2020-09-25 04:20:06,829 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 30 transitions. Word has length 28 [2020-09-25 04:20:06,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:06,830 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 30 transitions. [2020-09-25 04:20:06,830 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:20:06,830 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 30 transitions. [2020-09-25 04:20:06,833 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-09-25 04:20:06,833 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:20:06,834 INFO L422 BasicCegarLoop]: trace histogram [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 04:20:06,834 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:20:06,834 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:20:06,835 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:20:06,835 INFO L82 PathProgramCache]: Analyzing trace with hash 1645321695, now seen corresponding path program 1 times [2020-09-25 04:20:06,835 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:20:06,835 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [548498506] [2020-09-25 04:20:06,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:20:06,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:06,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:06,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-25 04:20:07,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:07,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-09-25 04:20:07,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 04:20:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-25 04:20:07,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 04:20:07,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:20:07,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 04:20:07,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:07,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 04:20:07,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,143 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,144 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:07,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 04:20:07,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-25 04:20:07,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:20:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-09-25 04:20:07,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,290 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:20:07,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 04:20:07,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 04:20:07,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:20:07,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:20:07,347 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:20:07,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 04:20:07,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:20:07,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:20:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:20:07,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:20:07,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:20:07,358 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 04:20:07,359 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [548498506] [2020-09-25 04:20:07,359 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:20:07,359 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-25 04:20:07,359 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447276230] [2020-09-25 04:20:07,360 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 04:20:07,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:20:07,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 04:20:07,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:20:07,365 INFO L87 Difference]: Start difference. First operand 28 states and 30 transitions. Second operand 6 states. [2020-09-25 04:20:07,430 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:20:07,430 INFO L93 Difference]: Finished difference Result 28 states and 30 transitions. [2020-09-25 04:20:07,430 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 04:20:07,431 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 28 [2020-09-25 04:20:07,431 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:20:07,431 INFO L225 Difference]: With dead ends: 28 [2020-09-25 04:20:07,431 INFO L226 Difference]: Without dead ends: 0 [2020-09-25 04:20:07,432 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 04:20:07,433 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-25 04:20:07,433 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-25 04:20:07,433 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-25 04:20:07,433 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-25 04:20:07,434 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 28 [2020-09-25 04:20:07,434 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:20:07,434 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-25 04:20:07,434 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 04:20:07,434 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-25 04:20:07,434 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-25 04:20:07,435 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:20:07,437 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-25 04:20:07,466 INFO L271 CegarLoopResult]: At program point ULTIMATE.initFINAL(line -1) the Hoare annotation is: true [2020-09-25 04:20:07,466 INFO L268 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:20:07,467 INFO L268 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-09-25 04:20:07,467 INFO L271 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-09-25 04:20:07,467 INFO L271 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-09-25 04:20:07,467 INFO L268 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-09-25 04:20:07,467 INFO L268 CegarLoopResult]: For program point mainErr0ASSERT_VIOLATIONERROR_FUNCTION(line 15) no Hoare annotation was computed. [2020-09-25 04:20:07,467 INFO L271 CegarLoopResult]: At program point mainENTRY(lines 11 17) the Hoare annotation is: true [2020-09-25 04:20:07,468 INFO L268 CegarLoopResult]: For program point mainEXIT(lines 11 17) no Hoare annotation was computed. [2020-09-25 04:20:07,468 INFO L268 CegarLoopResult]: For program point L15(line 15) no Hoare annotation was computed. [2020-09-25 04:20:07,468 INFO L268 CegarLoopResult]: For program point L14(lines 14 16) no Hoare annotation was computed. [2020-09-25 04:20:07,468 INFO L271 CegarLoopResult]: At program point L13(line 13) the Hoare annotation is: true [2020-09-25 04:20:07,468 INFO L268 CegarLoopResult]: For program point L12(line 12) no Hoare annotation was computed. [2020-09-25 04:20:07,468 INFO L268 CegarLoopResult]: For program point L13-1(line 13) no Hoare annotation was computed. [2020-09-25 04:20:07,468 INFO L268 CegarLoopResult]: For program point L14-2(lines 11 17) no Hoare annotation was computed. [2020-09-25 04:20:07,469 INFO L268 CegarLoopResult]: For program point L12-1(line 12) no Hoare annotation was computed. [2020-09-25 04:20:07,469 INFO L268 CegarLoopResult]: For program point L13-2(line 13) no Hoare annotation was computed. [2020-09-25 04:20:07,469 INFO L268 CegarLoopResult]: For program point L13-3(line 13) no Hoare annotation was computed. [2020-09-25 04:20:07,469 INFO L268 CegarLoopResult]: For program point idFINAL(lines 4 9) no Hoare annotation was computed. [2020-09-25 04:20:07,469 INFO L268 CegarLoopResult]: For program point idEXIT(lines 4 9) no Hoare annotation was computed. [2020-09-25 04:20:07,469 INFO L271 CegarLoopResult]: At program point idENTRY(lines 4 9) the Hoare annotation is: true [2020-09-25 04:20:07,469 INFO L268 CegarLoopResult]: For program point L8(line 8) no Hoare annotation was computed. [2020-09-25 04:20:07,470 INFO L268 CegarLoopResult]: For program point L7(line 7) no Hoare annotation was computed. [2020-09-25 04:20:07,470 INFO L271 CegarLoopResult]: At program point L6(line 6) the Hoare annotation is: true [2020-09-25 04:20:07,470 INFO L268 CegarLoopResult]: For program point L7-1(line 7) no Hoare annotation was computed. [2020-09-25 04:20:07,470 INFO L268 CegarLoopResult]: For program point L5(line 5) no Hoare annotation was computed. [2020-09-25 04:20:07,470 INFO L268 CegarLoopResult]: For program point L6-1(line 6) no Hoare annotation was computed. [2020-09-25 04:20:07,470 INFO L268 CegarLoopResult]: For program point L5-1(line 5) no Hoare annotation was computed. [2020-09-25 04:20:07,470 INFO L268 CegarLoopResult]: For program point L6-2(line 6) no Hoare annotation was computed. [2020-09-25 04:20:07,471 INFO L268 CegarLoopResult]: For program point L6-3(line 6) no Hoare annotation was computed. [2020-09-25 04:20:07,478 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 25.09 04:20:07 BoogieIcfgContainer [2020-09-25 04:20:07,478 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-25 04:20:07,483 INFO L168 Benchmark]: Toolchain (without parser) took 3297.19 ms. Allocated memory was 143.1 MB in the beginning and 232.3 MB in the end (delta: 89.1 MB). Free memory was 105.6 MB in the beginning and 137.9 MB in the end (delta: -32.3 MB). Peak memory consumption was 56.8 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:07,484 INFO L168 Benchmark]: CDTParser took 0.20 ms. Allocated memory is still 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-25 04:20:07,484 INFO L168 Benchmark]: CACSL2BoogieTranslator took 307.81 ms. Allocated memory is still 143.1 MB. Free memory was 104.9 MB in the beginning and 95.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:07,485 INFO L168 Benchmark]: Boogie Preprocessor took 40.39 ms. Allocated memory is still 143.1 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:07,486 INFO L168 Benchmark]: RCFGBuilder took 420.51 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 94.3 MB in the beginning and 172.7 MB in the end (delta: -78.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:07,487 INFO L168 Benchmark]: TraceAbstraction took 2505.80 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 172.1 MB in the beginning and 137.9 MB in the end (delta: 34.2 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. [2020-09-25 04:20:07,491 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 143.1 MB. Free memory was 123.4 MB in the beginning and 123.2 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 307.81 ms. Allocated memory is still 143.1 MB. Free memory was 104.9 MB in the beginning and 95.7 MB in the end (delta: 9.2 MB). Peak memory consumption was 9.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 40.39 ms. Allocated memory is still 143.1 MB. Free memory was 95.7 MB in the beginning and 94.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 1.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 420.51 ms. Allocated memory was 143.1 MB in the beginning and 205.0 MB in the end (delta: 61.9 MB). Free memory was 94.3 MB in the beginning and 172.7 MB in the end (delta: -78.4 MB). Peak memory consumption was 12.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2505.80 ms. Allocated memory was 205.0 MB in the beginning and 232.3 MB in the end (delta: 27.3 MB). Free memory was 172.1 MB in the beginning and 137.9 MB in the end (delta: 34.2 MB). Peak memory consumption was 61.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 15]: 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, 30 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 2.3s, OverallIterations: 3, TraceHistogramMax: 2, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 80 SDtfs, 7 SDslu, 244 SDs, 0 SdLazy, 40 SolverSat, 3 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 37 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 2 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 7 LocationsWithAnnotation, 9 PreInvPairs, 9 NumberOfFragments, 7 HoareAnnotationTreeSize, 9 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.0s HoareSimplificationTime, 7 FomulaSimplificationsInter, 0 FormulaSimplificationTreeSizeReductionInter, 0.0s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 1.7s InterpolantComputationTime, 74 NumberOfCodeBlocks, 74 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 2842 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 8/8 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...