/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:33:29,860 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:33:29,864 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:33:29,905 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:33:29,905 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:33:29,906 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:33:29,908 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:33:29,910 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:33:29,911 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:33:29,912 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:33:29,913 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:33:29,915 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:33:29,915 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:33:29,916 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:33:29,917 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:33:29,919 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:33:29,920 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:33:29,921 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:33:29,923 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:33:29,925 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:33:29,926 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:33:29,928 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:33:29,929 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:33:29,930 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:33:29,933 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:33:29,933 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:33:29,933 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:33:29,934 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:33:29,935 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:33:29,936 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:33:29,936 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:33:29,937 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:33:29,938 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:33:29,939 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:33:29,940 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:33:29,940 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:33:29,941 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:33:29,941 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:33:29,942 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:33:29,943 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:33:29,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:33:29,944 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 13:33:29,976 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:33:29,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:33:29,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:33:29,978 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:33:29,979 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:33:29,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:33:29,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:33:29,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:33:29,979 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:33:29,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:33:29,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:33:29,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:33:29,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:33:29,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:33:29,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:33:29,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:33:29,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:33:29,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:33:29,982 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:33:29,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:33:29,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:33:29,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:33:29,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:33:29,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:33:29,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:33:29,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:33:29,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:33:29,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:33:29,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:33:29,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:33:30,433 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:33:30,461 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:33:30,466 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:33:30,468 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:33:30,468 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:33:30,469 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 13:33:30,553 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac8e21b99/edf4db1b3d3845c7bb99ce9d5773277d/FLAG687445e52 [2020-09-25 13:33:31,245 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:33:31,246 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 13:33:31,263 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac8e21b99/edf4db1b3d3845c7bb99ce9d5773277d/FLAG687445e52 [2020-09-25 13:33:31,463 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ac8e21b99/edf4db1b3d3845c7bb99ce9d5773277d [2020-09-25 13:33:31,478 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:33:31,485 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:33:31,486 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:31,486 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:33:31,493 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:33:31,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,499 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a29a149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:31, skipping insertion in model container [2020-09-25 13:33:31,500 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:33:31" (1/1) ... [2020-09-25 13:33:31,509 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:33:31,562 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:33:32,041 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:32,048 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:33:32,362 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:33:32,388 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:33:32,388 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32 WrapperNode [2020-09-25 13:33:32,389 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:33:32,390 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:33:32,390 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:33:32,390 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:33:32,410 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,410 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,430 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,431 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,470 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,499 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,506 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (1/1) ... [2020-09-25 13:33:32,529 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:33:32,529 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:33:32,530 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:33:32,530 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:33:32,533 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (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 13:33:32,614 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:33:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:33:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 13:33:32,615 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:33:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 13:33:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:33:32,615 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:33:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 13:33:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:33:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:33:32,616 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:33:34,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:33:34,195 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 13:33:34,204 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:34 BoogieIcfgContainer [2020-09-25 13:33:34,204 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:33:34,205 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:33:34,206 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:33:34,210 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:33:34,210 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:33:31" (1/3) ... [2020-09-25 13:33:34,211 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f371a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:34, skipping insertion in model container [2020-09-25 13:33:34,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:33:32" (2/3) ... [2020-09-25 13:33:34,212 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@34f371a6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:33:34, skipping insertion in model container [2020-09-25 13:33:34,212 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:33:34" (3/3) ... [2020-09-25 13:33:34,215 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 13:33:34,227 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:33:34,239 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:33:34,262 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:33:34,298 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:33:34,298 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:33:34,298 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:33:34,298 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:33:34,299 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:33:34,299 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:33:34,299 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:33:34,299 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:33:34,331 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 13:33:34,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 13:33:34,344 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:34,345 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] [2020-09-25 13:33:34,346 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:34,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:34,354 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 13:33:34,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:34,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [669468612] [2020-09-25 13:33:34,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:34,563 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:34,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 13:33:35,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:33:35,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 811 [2020-09-25 13:33:35,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:33:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 13:33:35,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 13:33:35,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 13:33:35,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:35,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:35,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:35,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:35,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:35,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:35,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 13:33:35,568 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:35,568 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:35,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:35,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:33:35,569 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:35,592 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 13:33:35,593 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [669468612] [2020-09-25 13:33:35,595 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:33:35,596 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 13:33:35,597 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1551955572] [2020-09-25 13:33:35,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 13:33:35,605 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:35,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 13:33:35,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 13:33:35,627 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 13:33:37,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:37,758 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 13:33:37,759 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 13:33:37,761 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-09-25 13:33:37,761 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:37,788 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 13:33:37,788 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 13:33:37,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 13:33:37,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 13:33:37,925 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 13:33:37,927 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 13:33:37,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 13:33:37,935 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 71 [2020-09-25 13:33:37,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:37,936 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 13:33:37,936 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 13:33:37,937 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 13:33:37,960 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 13:33:37,961 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:37,961 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:33:37,962 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:33:37,962 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:37,962 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:37,963 INFO L82 PathProgramCache]: Analyzing trace with hash 1195397277, now seen corresponding path program 1 times [2020-09-25 13:33:37,964 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:37,964 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519168286] [2020-09-25 13:33:37,964 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:38,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:38,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:38,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:39,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 13:33:40,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:33:40,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2154 [2020-09-25 13:33:40,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:33:40,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:40,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 13:33:40,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,281 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:40,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:40,305 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:40,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:33:40,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,306 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:40,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:40,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:40,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:40,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:40,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:40,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:40,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 13:33:40,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:33:40,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-25 13:33:40,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:40,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:40,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:33:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:40,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 13:33:40,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:40,599 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 13:33:40,600 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519168286] [2020-09-25 13:33:40,600 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:40,601 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 13:33:40,601 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1924517340] [2020-09-25 13:33:40,604 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 13:33:40,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:40,605 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 13:33:40,605 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 13:33:40,605 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 13:33:42,466 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:42,467 INFO L93 Difference]: Finished difference Result 1252 states and 1563 transitions. [2020-09-25 13:33:42,467 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:33:42,467 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 13:33:42,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:42,472 INFO L225 Difference]: With dead ends: 1252 [2020-09-25 13:33:42,473 INFO L226 Difference]: Without dead ends: 724 [2020-09-25 13:33:42,476 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:33:42,478 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-09-25 13:33:42,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 697. [2020-09-25 13:33:42,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 13:33:42,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 853 transitions. [2020-09-25 13:33:42,523 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 853 transitions. Word has length 151 [2020-09-25 13:33:42,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:42,526 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 853 transitions. [2020-09-25 13:33:42,526 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 13:33:42,526 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 853 transitions. [2020-09-25 13:33:42,529 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 13:33:42,529 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:42,530 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:33:42,530 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:33:42,530 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:42,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:42,531 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 13:33:42,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:42,531 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [943566350] [2020-09-25 13:33:42,531 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:42,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:42,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:42,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:44,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:45,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 13:33:47,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:33:47,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:33:47,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:33:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:47,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-25 13:33:47,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:33:47,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:47,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:47,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,739 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:47,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:47,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:33:47,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,740 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:47,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:47,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:47,741 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:47,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:47,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:47,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:47,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:33:47,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:47,928 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-25 13:33:47,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:47,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:47,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:33:47,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:48,161 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:48,161 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [943566350] [2020-09-25 13:33:48,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:48,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:48,162 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874036270] [2020-09-25 13:33:48,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:48,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:48,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:48,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:48,166 INFO L87 Difference]: Start difference. First operand 697 states and 853 transitions. Second operand 8 states. [2020-09-25 13:33:51,365 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:51,365 INFO L93 Difference]: Finished difference Result 1625 states and 2053 transitions. [2020-09-25 13:33:51,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 13:33:51,371 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-25 13:33:51,372 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:51,386 INFO L225 Difference]: With dead ends: 1625 [2020-09-25 13:33:51,386 INFO L226 Difference]: Without dead ends: 1093 [2020-09-25 13:33:51,389 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-25 13:33:51,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1093 states. [2020-09-25 13:33:51,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1093 to 1044. [2020-09-25 13:33:51,427 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1044 states. [2020-09-25 13:33:51,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1044 states to 1044 states and 1270 transitions. [2020-09-25 13:33:51,437 INFO L78 Accepts]: Start accepts. Automaton has 1044 states and 1270 transitions. Word has length 160 [2020-09-25 13:33:51,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:51,440 INFO L479 AbstractCegarLoop]: Abstraction has 1044 states and 1270 transitions. [2020-09-25 13:33:51,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:51,440 INFO L276 IsEmpty]: Start isEmpty. Operand 1044 states and 1270 transitions. [2020-09-25 13:33:51,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 13:33:51,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:51,443 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:33:51,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:33:51,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:51,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:51,444 INFO L82 PathProgramCache]: Analyzing trace with hash 111502418, now seen corresponding path program 1 times [2020-09-25 13:33:51,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:51,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413419373] [2020-09-25 13:33:51,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:51,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:51,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:51,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:52,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:54,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 13:33:54,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 13:33:54,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2839 [2020-09-25 13:33:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:54,330 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:33:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:33:54,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 13:33:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:33:54,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:54,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:33:54,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:54,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:33:54,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:54,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:33:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:33:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:33:54,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:33:54,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:54,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:54,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:33:54,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 13:33:54,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:33:54,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-25 13:33:54,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:33:54,653 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:33:54,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:33:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:33:54,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 13:33:54,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:33:54,777 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:33:54,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413419373] [2020-09-25 13:33:54,780 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:33:54,780 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:33:54,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1900286138] [2020-09-25 13:33:54,783 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:33:54,784 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:33:54,784 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:33:54,785 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:33:54,785 INFO L87 Difference]: Start difference. First operand 1044 states and 1270 transitions. Second operand 8 states. [2020-09-25 13:33:58,256 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:33:58,256 INFO L93 Difference]: Finished difference Result 2330 states and 3029 transitions. [2020-09-25 13:33:58,257 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 13:33:58,257 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 13:33:58,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:33:58,270 INFO L225 Difference]: With dead ends: 2330 [2020-09-25 13:33:58,271 INFO L226 Difference]: Without dead ends: 1792 [2020-09-25 13:33:58,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 13:33:58,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1792 states. [2020-09-25 13:33:58,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1792 to 1693. [2020-09-25 13:33:58,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1693 states. [2020-09-25 13:33:58,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1693 states to 1693 states and 2103 transitions. [2020-09-25 13:33:58,338 INFO L78 Accepts]: Start accepts. Automaton has 1693 states and 2103 transitions. Word has length 162 [2020-09-25 13:33:58,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:33:58,339 INFO L479 AbstractCegarLoop]: Abstraction has 1693 states and 2103 transitions. [2020-09-25 13:33:58,339 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:33:58,339 INFO L276 IsEmpty]: Start isEmpty. Operand 1693 states and 2103 transitions. [2020-09-25 13:33:58,342 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 13:33:58,343 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:33:58,343 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-25 13:33:58,343 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:33:58,343 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:33:58,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:33:58,344 INFO L82 PathProgramCache]: Analyzing trace with hash -677190618, now seen corresponding path program 1 times [2020-09-25 13:33:58,344 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:33:58,344 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [28837972] [2020-09-25 13:33:58,344 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:33:58,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:33:58,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:33:58,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:00,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 13:34:03,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:34:03,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 13:34:03,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,390 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:34:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 13:34:03,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 13:34:03,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:03,490 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:03,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:03,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:03,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:03,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 13:34:03,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,540 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:03,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:34:03,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:03,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:03,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:03,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:03,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:03,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 13:34:03,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:03,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 13:34:03,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:03,773 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:03,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 13:34:03,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:03,881 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:34:03,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [28837972] [2020-09-25 13:34:03,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:34:03,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 13:34:03,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1026247102] [2020-09-25 13:34:03,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:34:03,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:03,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:34:03,883 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:34:03,883 INFO L87 Difference]: Start difference. First operand 1693 states and 2103 transitions. Second operand 8 states. [2020-09-25 13:34:07,010 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:07,011 INFO L93 Difference]: Finished difference Result 4518 states and 5953 transitions. [2020-09-25 13:34:07,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 13:34:07,012 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 13:34:07,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:07,029 INFO L225 Difference]: With dead ends: 4518 [2020-09-25 13:34:07,029 INFO L226 Difference]: Without dead ends: 2999 [2020-09-25 13:34:07,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 13:34:07,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2999 states. [2020-09-25 13:34:07,110 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2999 to 2935. [2020-09-25 13:34:07,110 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2935 states. [2020-09-25 13:34:07,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2935 states to 2935 states and 3702 transitions. [2020-09-25 13:34:07,121 INFO L78 Accepts]: Start accepts. Automaton has 2935 states and 3702 transitions. Word has length 179 [2020-09-25 13:34:07,121 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:07,121 INFO L479 AbstractCegarLoop]: Abstraction has 2935 states and 3702 transitions. [2020-09-25 13:34:07,121 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:34:07,122 INFO L276 IsEmpty]: Start isEmpty. Operand 2935 states and 3702 transitions. [2020-09-25 13:34:07,127 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 13:34:07,127 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:07,127 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 13:34:07,128 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:34:07,128 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:07,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:07,128 INFO L82 PathProgramCache]: Analyzing trace with hash -1644843063, now seen corresponding path program 1 times [2020-09-25 13:34:07,129 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:07,129 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865282285] [2020-09-25 13:34:07,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:07,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:07,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:07,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:11,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:12,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 13:34:12,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:34:12,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5012 [2020-09-25 13:34:12,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:12,186 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 13:34:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 13:34:12,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 13:34:12,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:12,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:34:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:12,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:12,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 13:34:12,284 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:34:12,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:12,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:34:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:34:12,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:34:12,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:34:12,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 13:34:12,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:12,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:12,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 13:34:12,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:12,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 13:34:12,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:12,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:12,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:34:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:12,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 13:34:12,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:12,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 13:34:12,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:12,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:12,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:34:12,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 13:34:12,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:34:12,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 13:34:12,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:34:12,790 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:34:12,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:34:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 13:34:12,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 13:34:12,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:34:13,116 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 176 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 13:34:13,117 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865282285] [2020-09-25 13:34:13,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:34:13,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 13:34:13,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [175563869] [2020-09-25 13:34:13,120 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 13:34:13,120 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:34:13,120 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 13:34:13,121 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:34:13,121 INFO L87 Difference]: Start difference. First operand 2935 states and 3702 transitions. Second operand 10 states. [2020-09-25 13:34:16,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:34:16,750 INFO L93 Difference]: Finished difference Result 6176 states and 8212 transitions. [2020-09-25 13:34:16,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:34:16,751 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 239 [2020-09-25 13:34:16,751 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:34:16,774 INFO L225 Difference]: With dead ends: 6176 [2020-09-25 13:34:16,775 INFO L226 Difference]: Without dead ends: 3893 [2020-09-25 13:34:16,784 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=302, Unknown=0, NotChecked=0, Total=420 [2020-09-25 13:34:16,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3893 states. [2020-09-25 13:34:16,888 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3893 to 3636. [2020-09-25 13:34:16,888 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3636 states. [2020-09-25 13:34:16,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3636 states to 3636 states and 4584 transitions. [2020-09-25 13:34:16,901 INFO L78 Accepts]: Start accepts. Automaton has 3636 states and 4584 transitions. Word has length 239 [2020-09-25 13:34:16,901 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:34:16,901 INFO L479 AbstractCegarLoop]: Abstraction has 3636 states and 4584 transitions. [2020-09-25 13:34:16,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 13:34:16,901 INFO L276 IsEmpty]: Start isEmpty. Operand 3636 states and 4584 transitions. [2020-09-25 13:34:16,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 13:34:16,907 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:34:16,907 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 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] [2020-09-25 13:34:16,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:34:16,908 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:34:16,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:34:16,909 INFO L82 PathProgramCache]: Analyzing trace with hash -772883364, now seen corresponding path program 1 times [2020-09-25 13:34:16,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:34:16,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2132262689] [2020-09-25 13:34:16,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:34:16,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:34:16,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:17,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:34:18,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking...