/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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 23:55:25,917 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 23:55:25,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 23:55:25,946 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 23:55:25,946 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 23:55:25,948 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 23:55:25,949 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 23:55:25,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 23:55:25,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 23:55:25,953 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 23:55:25,954 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 23:55:25,955 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 23:55:25,956 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 23:55:25,957 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 23:55:25,958 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 23:55:25,959 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 23:55:25,960 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 23:55:25,961 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 23:55:25,963 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 23:55:25,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 23:55:25,966 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 23:55:25,967 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 23:55:25,969 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 23:55:25,970 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 23:55:25,972 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 23:55:25,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 23:55:25,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 23:55:25,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 23:55:25,974 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 23:55:25,975 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 23:55:25,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 23:55:25,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 23:55:25,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 23:55:25,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 23:55:25,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 23:55:25,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 23:55:25,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 23:55:25,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 23:55:25,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 23:55:25,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 23:55:25,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 23:55:25,983 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 [2020-09-24 23:55:26,008 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 23:55:26,009 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 23:55:26,010 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 23:55:26,010 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 23:55:26,010 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 23:55:26,010 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 23:55:26,011 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 23:55:26,011 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 23:55:26,011 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 23:55:26,011 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 23:55:26,011 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 23:55:26,012 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 23:55:26,012 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 23:55:26,012 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 23:55:26,012 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 23:55:26,012 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 23:55:26,013 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 23:55:26,013 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 23:55:26,013 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 23:55:26,013 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 23:55:26,013 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 23:55:26,014 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 23:55:26,014 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 23:55:26,014 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 23:55:26,014 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 23:55:26,015 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 23:55:26,015 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 23:55:26,015 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 23:55:26,015 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 23:55:26,015 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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;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=SHALLOWEST;log-additional-information=true; [2020-09-24 23:55:26,477 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 23:55:26,493 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 23:55:26,498 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 23:55:26,500 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 23:55:26,500 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 23:55:26,501 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-24 23:55:26,599 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62fc05bf5/42168307f2e24489a313a0ec056b589a/FLAGc08ec63ee [2020-09-24 23:55:27,268 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 23:55:27,269 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label11.c [2020-09-24 23:55:27,283 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62fc05bf5/42168307f2e24489a313a0ec056b589a/FLAGc08ec63ee [2020-09-24 23:55:27,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/62fc05bf5/42168307f2e24489a313a0ec056b589a [2020-09-24 23:55:27,501 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 23:55:27,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 23:55:27,508 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 23:55:27,508 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 23:55:27,513 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 23:55:27,514 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:55:27" (1/1) ... [2020-09-24 23:55:27,518 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@547fd1e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:27, skipping insertion in model container [2020-09-24 23:55:27,519 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 11:55:27" (1/1) ... [2020-09-24 23:55:27,528 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 23:55:27,583 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 23:55:28,046 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:55:28,059 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 23:55:28,324 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 23:55:28,344 INFO L208 MainTranslator]: Completed translation [2020-09-24 23:55:28,345 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28 WrapperNode [2020-09-24 23:55:28,345 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 23:55:28,346 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 23:55:28,346 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 23:55:28,346 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 23:55:28,364 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (1/1) ... [2020-09-24 23:55:28,365 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (1/1) ... [2020-09-24 23:55:28,384 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (1/1) ... [2020-09-24 23:55:28,385 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (1/1) ... [2020-09-24 23:55:28,424 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (1/1) ... [2020-09-24 23:55:28,443 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (1/1) ... [2020-09-24 23:55:28,447 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (1/1) ... [2020-09-24 23:55:28,454 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 23:55:28,455 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 23:55:28,455 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 23:55:28,455 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 23:55:28,457 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (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 [2020-09-24 23:55:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 23:55:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 23:55:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 23:55:28,536 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 23:55:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 23:55:28,536 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 23:55:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 23:55:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 23:55:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 23:55:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 23:55:28,537 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 23:55:29,942 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 23:55:29,943 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 23:55:29,952 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:55:29 BoogieIcfgContainer [2020-09-24 23:55:29,952 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 23:55:29,954 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 23:55:29,954 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 23:55:29,958 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 23:55:29,958 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 11:55:27" (1/3) ... [2020-09-24 23:55:29,959 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6ebdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:55:29, skipping insertion in model container [2020-09-24 23:55:29,959 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 11:55:28" (2/3) ... [2020-09-24 23:55:29,960 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5f6ebdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 11:55:29, skipping insertion in model container [2020-09-24 23:55:29,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 11:55:29" (3/3) ... [2020-09-24 23:55:29,962 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label11.c [2020-09-24 23:55:29,974 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 23:55:29,985 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 23:55:30,008 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 23:55:30,046 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 23:55:30,047 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 23:55:30,047 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 23:55:30,047 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 23:55:30,047 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 23:55:30,048 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 23:55:30,048 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 23:55:30,048 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 23:55:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 23:55:30,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 135 [2020-09-24 23:55:30,104 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:55:30,106 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, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:55:30,107 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:55:30,114 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:55:30,115 INFO L82 PathProgramCache]: Analyzing trace with hash 604783425, now seen corresponding path program 1 times [2020-09-24 23:55:30,126 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:55:30,127 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [162597152] [2020-09-24 23:55:30,127 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:55:30,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:30,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:30,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:31,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:31,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:31,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:32,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:33,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:34,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:35,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:35,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:35,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:35,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-09-24 23:55:35,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:55:35,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5032 [2020-09-24 23:55:35,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-24 23:55:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 23:55:35,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-24 23:55:35,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 23:55:36,184 WARN L193 SmtUtils]: Spent 135.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-09-24 23:55:36,460 WARN L193 SmtUtils]: Spent 250.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 45 [2020-09-24 23:55:36,681 WARN L193 SmtUtils]: Spent 188.00 ms on a formula simplification. DAG size of input: 68 DAG size of output: 45 [2020-09-24 23:55:36,833 WARN L193 SmtUtils]: Spent 124.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 42 [2020-09-24 23:55:37,053 WARN L193 SmtUtils]: Spent 193.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 39 [2020-09-24 23:55:37,213 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 33 [2020-09-24 23:55:37,379 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 33 [2020-09-24 23:55:37,581 WARN L193 SmtUtils]: Spent 158.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 32 [2020-09-24 23:55:38,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:55:38,013 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:38,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:38,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:38,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:55:38,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:55:38,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-24 23:55:38,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:38,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 23:55:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:55:38,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:55:38,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:55:38,445 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 23:55:38,447 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [162597152] [2020-09-24 23:55:38,449 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 23:55:38,450 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-09-24 23:55:38,451 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627258977] [2020-09-24 23:55:38,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-24 23:55:38,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:55:38,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-24 23:55:38,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=112, Invalid=308, Unknown=0, NotChecked=0, Total=420 [2020-09-24 23:55:38,484 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 21 states. [2020-09-24 23:55:38,985 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 81 [2020-09-24 23:55:39,157 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 99 [2020-09-24 23:55:39,549 WARN L193 SmtUtils]: Spent 336.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 23:55:39,916 WARN L193 SmtUtils]: Spent 278.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 104 [2020-09-24 23:55:40,282 WARN L193 SmtUtils]: Spent 316.00 ms on a formula simplification. DAG size of input: 110 DAG size of output: 108 [2020-09-24 23:55:40,504 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 54 [2020-09-24 23:55:40,941 WARN L193 SmtUtils]: Spent 353.00 ms on a formula simplification. DAG size of input: 109 DAG size of output: 107 [2020-09-24 23:55:41,113 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 36 [2020-09-24 23:55:41,658 WARN L193 SmtUtils]: Spent 322.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-09-24 23:55:42,159 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-09-24 23:55:42,445 WARN L193 SmtUtils]: Spent 248.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 23:55:42,821 WARN L193 SmtUtils]: Spent 313.00 ms on a formula simplification. DAG size of input: 108 DAG size of output: 106 [2020-09-24 23:55:43,145 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 100 [2020-09-24 23:55:43,408 WARN L193 SmtUtils]: Spent 224.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 87 [2020-09-24 23:55:43,768 WARN L193 SmtUtils]: Spent 300.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-09-24 23:55:44,064 WARN L193 SmtUtils]: Spent 159.00 ms on a formula simplification. DAG size of input: 58 DAG size of output: 56 [2020-09-24 23:55:44,559 WARN L193 SmtUtils]: Spent 290.00 ms on a formula simplification. DAG size of input: 107 DAG size of output: 105 [2020-09-24 23:55:44,766 WARN L193 SmtUtils]: Spent 119.00 ms on a formula simplification that was a NOOP. DAG size: 89 [2020-09-24 23:55:45,172 WARN L193 SmtUtils]: Spent 265.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 91 [2020-09-24 23:55:45,839 WARN L193 SmtUtils]: Spent 269.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 90 [2020-09-24 23:55:46,372 WARN L193 SmtUtils]: Spent 238.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-09-24 23:55:46,694 WARN L193 SmtUtils]: Spent 215.00 ms on a formula simplification. DAG size of input: 91 DAG size of output: 89 [2020-09-24 23:55:47,242 WARN L193 SmtUtils]: Spent 304.00 ms on a formula simplification. DAG size of input: 105 DAG size of output: 103 [2020-09-24 23:55:47,502 WARN L193 SmtUtils]: Spent 208.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-09-24 23:55:48,617 WARN L193 SmtUtils]: Spent 197.00 ms on a formula simplification. DAG size of input: 90 DAG size of output: 88 [2020-09-24 23:55:49,251 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 86 [2020-09-24 23:55:50,081 WARN L193 SmtUtils]: Spent 258.00 ms on a formula simplification. DAG size of input: 103 DAG size of output: 101 [2020-09-24 23:55:51,010 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-24 23:55:51,407 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 62 [2020-09-24 23:55:52,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:55:52,756 INFO L93 Difference]: Finished difference Result 1741 states and 2475 transitions. [2020-09-24 23:55:52,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 50 states. [2020-09-24 23:55:52,759 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 134 [2020-09-24 23:55:52,760 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:55:52,786 INFO L225 Difference]: With dead ends: 1741 [2020-09-24 23:55:52,786 INFO L226 Difference]: Without dead ends: 1007 [2020-09-24 23:55:52,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1143 ImplicationChecksByTransitivity, 10.6s TimeCoverageRelationStatistics Valid=1084, Invalid=2948, Unknown=0, NotChecked=0, Total=4032 [2020-09-24 23:55:52,830 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1007 states. [2020-09-24 23:55:52,915 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1007 to 892. [2020-09-24 23:55:52,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 892 states. [2020-09-24 23:55:52,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 892 states to 892 states and 1066 transitions. [2020-09-24 23:55:52,925 INFO L78 Accepts]: Start accepts. Automaton has 892 states and 1066 transitions. Word has length 134 [2020-09-24 23:55:52,926 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:55:52,927 INFO L479 AbstractCegarLoop]: Abstraction has 892 states and 1066 transitions. [2020-09-24 23:55:52,927 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-24 23:55:52,927 INFO L276 IsEmpty]: Start isEmpty. Operand 892 states and 1066 transitions. [2020-09-24 23:55:52,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 157 [2020-09-24 23:55:52,937 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:55:52,937 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 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] [2020-09-24 23:55:52,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 23:55:52,938 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:55:52,938 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:55:52,938 INFO L82 PathProgramCache]: Analyzing trace with hash -652427357, now seen corresponding path program 1 times [2020-09-24 23:55:52,939 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:55:52,939 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078945204] [2020-09-24 23:55:52,939 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:55:52,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:53,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:53,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:53,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:53,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:54,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:54,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:55,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:57,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:57,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:57,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:57,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 167 [2020-09-24 23:55:57,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 23:55:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-24 23:55:57,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 23:55:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 23:55:57,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 148 [2020-09-24 23:55:57,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:55:58,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:55:58,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:58,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:58,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:58,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:55:58,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:55:58,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 23:55:58,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:55:58,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:55:58,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 23:55:58,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:55:58,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:55:58,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:55:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:55:58,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:55:58,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:55:58,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 23:55:58,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:55:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:55:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:55:58,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-24 23:55:58,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:55:58,496 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 23:55:58,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078945204] [2020-09-24 23:55:58,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:55:58,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 23:55:58,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093828465] [2020-09-24 23:55:58,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 23:55:58,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:55:58,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 23:55:58,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-24 23:55:58,502 INFO L87 Difference]: Start difference. First operand 892 states and 1066 transitions. Second operand 6 states. [2020-09-24 23:56:00,489 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:56:00,489 INFO L93 Difference]: Finished difference Result 2402 states and 2945 transitions. [2020-09-24 23:56:00,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 23:56:00,490 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 156 [2020-09-24 23:56:00,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:56:00,509 INFO L225 Difference]: With dead ends: 2402 [2020-09-24 23:56:00,509 INFO L226 Difference]: Without dead ends: 1590 [2020-09-24 23:56:00,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-24 23:56:00,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1590 states. [2020-09-24 23:56:00,609 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1590 to 1506. [2020-09-24 23:56:00,609 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1506 states. [2020-09-24 23:56:00,617 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1506 states to 1506 states and 1815 transitions. [2020-09-24 23:56:00,617 INFO L78 Accepts]: Start accepts. Automaton has 1506 states and 1815 transitions. Word has length 156 [2020-09-24 23:56:00,619 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:56:00,620 INFO L479 AbstractCegarLoop]: Abstraction has 1506 states and 1815 transitions. [2020-09-24 23:56:00,620 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 23:56:00,620 INFO L276 IsEmpty]: Start isEmpty. Operand 1506 states and 1815 transitions. [2020-09-24 23:56:00,629 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 23:56:00,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:56:00,630 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 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, 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, 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, 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, 1, 1] [2020-09-24 23:56:00,630 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 23:56:00,630 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:56:00,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:56:00,631 INFO L82 PathProgramCache]: Analyzing trace with hash 1238072142, now seen corresponding path program 1 times [2020-09-24 23:56:00,631 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:56:00,631 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1764480593] [2020-09-24 23:56:00,632 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:56:00,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:00,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:01,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:01,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:01,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:02,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:02,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:03,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:05,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:56:05,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 182 [2020-09-24 23:56:05,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 23:56:05,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 23:56:05,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:56:05,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-24 23:56:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 23:56:05,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-24 23:56:05,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:56:05,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:56:05,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:06,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:06,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:56:06,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:56:06,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:56:06,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-24 23:56:06,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:56:06,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:56:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:56:06,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 23:56:06,056 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:56:06,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:56:06,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:06,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:06,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:56:06,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 23:56:06,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:56:06,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 23:56:06,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:56:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:56:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:56:06,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 23:56:06,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 23:56:06,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 23:56:06,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:06,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:06,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:06,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:56:06,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-24 23:56:06,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 23:56:06,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 23:56:06,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:56:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 23:56:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 23:56:06,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 23:56:06,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:56:06,531 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 18 proven. 7 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 23:56:06,532 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1764480593] [2020-09-24 23:56:06,533 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 23:56:06,533 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-24 23:56:06,533 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1208597422] [2020-09-24 23:56:06,534 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-24 23:56:06,534 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 23:56:06,534 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-24 23:56:06,535 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-09-24 23:56:06,535 INFO L87 Difference]: Start difference. First operand 1506 states and 1815 transitions. Second operand 13 states. [2020-09-24 23:56:07,489 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 60 [2020-09-24 23:56:09,816 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 61 [2020-09-24 23:56:12,760 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 23:56:12,760 INFO L93 Difference]: Finished difference Result 6012 states and 8365 transitions. [2020-09-24 23:56:12,760 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-24 23:56:12,761 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 169 [2020-09-24 23:56:12,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 23:56:12,790 INFO L225 Difference]: With dead ends: 6012 [2020-09-24 23:56:12,791 INFO L226 Difference]: Without dead ends: 4200 [2020-09-24 23:56:12,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=343, Invalid=779, Unknown=0, NotChecked=0, Total=1122 [2020-09-24 23:56:12,811 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4200 states. [2020-09-24 23:56:12,938 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4200 to 3787. [2020-09-24 23:56:12,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3787 states. [2020-09-24 23:56:12,954 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3787 states to 3787 states and 4659 transitions. [2020-09-24 23:56:12,955 INFO L78 Accepts]: Start accepts. Automaton has 3787 states and 4659 transitions. Word has length 169 [2020-09-24 23:56:12,956 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 23:56:12,956 INFO L479 AbstractCegarLoop]: Abstraction has 3787 states and 4659 transitions. [2020-09-24 23:56:12,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-24 23:56:12,957 INFO L276 IsEmpty]: Start isEmpty. Operand 3787 states and 4659 transitions. [2020-09-24 23:56:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 195 [2020-09-24 23:56:12,971 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 23:56:12,972 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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, 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 23:56:12,972 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 23:56:12,972 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 23:56:12,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 23:56:12,973 INFO L82 PathProgramCache]: Analyzing trace with hash 831808482, now seen corresponding path program 1 times [2020-09-24 23:56:12,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 23:56:12,973 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1072156963] [2020-09-24 23:56:12,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 23:56:13,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:13,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:13,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:14,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:14,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:18,039 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:56:18,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 207 [2020-09-24 23:56:18,040 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 23:56:18,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 23:56:18,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:56:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 23:56:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 23:56:18,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 23:56:18,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:56:18,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 23:56:18,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:18,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:56:18,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 23:56:18,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:56:18,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 23:56:18,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:56:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 23:56:18,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:56:18,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 23:56:18,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:56:18,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 23:56:18,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:18,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 23:56:18,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 23:56:18,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 23:56:18,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 23:56:18,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 23:56:18,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-09-24 23:56:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 23:56:18,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 23:56:18,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 23:56:18,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 23:56:18,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 23:56:18,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 23:56:18,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking...