/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=0.3 --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/Problem14_label21.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:28:02,883 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:28:02,888 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:28:02,933 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:28:02,933 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:28:02,945 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:28:02,947 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:28:02,951 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:28:02,952 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:28:02,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:28:02,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:28:02,957 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:28:02,957 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:28:02,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:28:02,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:28:02,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:28:02,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:28:02,971 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:28:02,973 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:28:02,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:28:02,985 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:28:02,986 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:28:02,987 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:28:02,988 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:28:02,992 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:28:02,993 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:28:02,993 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:28:02,996 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:28:02,997 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:28:02,998 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:28:02,998 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:28:02,999 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:28:03,000 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:28:03,001 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:28:03,002 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:28:03,002 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:28:03,003 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:28:03,003 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:28:03,003 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:28:03,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:28:03,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:28:03,009 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 12:28:03,034 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:28:03,034 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:28:03,036 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:28:03,036 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:28:03,036 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:28:03,037 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:28:03,037 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:28:03,037 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:28:03,037 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:28:03,037 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:28:03,038 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:28:03,038 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:28:03,038 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:28:03,038 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:28:03,038 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:28:03,039 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:28:03,039 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:28:03,039 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:28:03,039 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:28:03,039 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:28:03,039 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:28:03,040 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:28:03,040 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:28:03,040 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:28:03,040 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:28:03,041 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:28:03,041 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:28:03,041 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:28:03,041 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:28:03,041 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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;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=0.3;log-additional-information=true; [2020-09-25 12:28:03,495 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:28:03,521 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:28:03,528 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:28:03,531 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:28:03,531 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:28:03,532 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 12:28:03,614 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/054f187a1/4bc1dfbf8cb84ff9a8d0c4ab8efb0d28/FLAG69042a249 [2020-09-25 12:28:04,309 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:28:04,310 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem14_label21.c [2020-09-25 12:28:04,334 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/054f187a1/4bc1dfbf8cb84ff9a8d0c4ab8efb0d28/FLAG69042a249 [2020-09-25 12:28:04,499 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/054f187a1/4bc1dfbf8cb84ff9a8d0c4ab8efb0d28 [2020-09-25 12:28:04,514 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:28:04,520 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:28:04,524 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:04,524 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:28:04,529 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:28:04,530 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:04" (1/1) ... [2020-09-25 12:28:04,534 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ad15a05 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:04, skipping insertion in model container [2020-09-25 12:28:04,535 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:28:04" (1/1) ... [2020-09-25 12:28:04,544 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:28:04,602 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:28:05,133 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:05,139 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:28:05,397 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:28:05,437 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:28:05,438 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05 WrapperNode [2020-09-25 12:28:05,438 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:28:05,444 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:28:05,445 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:28:05,445 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:28:05,460 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (1/1) ... [2020-09-25 12:28:05,460 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (1/1) ... [2020-09-25 12:28:05,484 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (1/1) ... [2020-09-25 12:28:05,484 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (1/1) ... [2020-09-25 12:28:05,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (1/1) ... [2020-09-25 12:28:05,560 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (1/1) ... [2020-09-25 12:28:05,568 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (1/1) ... [2020-09-25 12:28:05,580 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:28:05,581 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:28:05,581 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:28:05,581 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:28:05,583 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (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 12:28:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:28:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:28:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:28:05,692 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:28:05,693 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:28:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:28:05,694 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:28:07,443 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:28:07,444 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:28:07,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:07 BoogieIcfgContainer [2020-09-25 12:28:07,456 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:28:07,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:28:07,460 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:28:07,464 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:28:07,464 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:28:04" (1/3) ... [2020-09-25 12:28:07,466 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc67b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:07, skipping insertion in model container [2020-09-25 12:28:07,466 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:28:05" (2/3) ... [2020-09-25 12:28:07,467 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@23cc67b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:28:07, skipping insertion in model container [2020-09-25 12:28:07,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:28:07" (3/3) ... [2020-09-25 12:28:07,472 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem14_label21.c [2020-09-25 12:28:07,484 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:28:07,501 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:28:07,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:28:07,578 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:28:07,578 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:28:07,578 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:28:07,579 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:28:07,579 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:28:07,579 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:28:07,579 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:28:07,579 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:28:07,618 INFO L276 IsEmpty]: Start isEmpty. Operand 678 states. [2020-09-25 12:28:07,628 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 12:28:07,629 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:07,631 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] [2020-09-25 12:28:07,631 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:07,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:07,640 INFO L82 PathProgramCache]: Analyzing trace with hash -2130690894, now seen corresponding path program 1 times [2020-09-25 12:28:07,652 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:07,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1803898826] [2020-09-25 12:28:07,653 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:07,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:07,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:08,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-25 12:28:08,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:08,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 647 [2020-09-25 12:28:08,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:08,579 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:28:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:28:08,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:08,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:08,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:08,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:08,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:08,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:08,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:28:08,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:08,724 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:08,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:08,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:08,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:08,754 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 12:28:08,756 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1803898826] [2020-09-25 12:28:08,758 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:08,758 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:28:08,759 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [268686456] [2020-09-25 12:28:08,767 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:28:08,768 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:08,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:28:08,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:28:08,791 INFO L87 Difference]: Start difference. First operand 678 states. Second operand 5 states. [2020-09-25 12:28:12,640 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:12,641 INFO L93 Difference]: Finished difference Result 1766 states and 2493 transitions. [2020-09-25 12:28:12,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:28:12,644 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 53 [2020-09-25 12:28:12,644 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:12,673 INFO L225 Difference]: With dead ends: 1766 [2020-09-25 12:28:12,673 INFO L226 Difference]: Without dead ends: 1025 [2020-09-25 12:28:12,688 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:12,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1025 states. [2020-09-25 12:28:12,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1025 to 995. [2020-09-25 12:28:12,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 995 states. [2020-09-25 12:28:12,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 995 states to 995 states and 1343 transitions. [2020-09-25 12:28:12,821 INFO L78 Accepts]: Start accepts. Automaton has 995 states and 1343 transitions. Word has length 53 [2020-09-25 12:28:12,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:12,822 INFO L479 AbstractCegarLoop]: Abstraction has 995 states and 1343 transitions. [2020-09-25 12:28:12,822 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:28:12,822 INFO L276 IsEmpty]: Start isEmpty. Operand 995 states and 1343 transitions. [2020-09-25 12:28:12,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 138 [2020-09-25 12:28:12,831 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:12,831 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:12,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:28:12,832 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:12,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:12,832 INFO L82 PathProgramCache]: Analyzing trace with hash -815962305, now seen corresponding path program 1 times [2020-09-25 12:28:12,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:12,833 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [398100953] [2020-09-25 12:28:12,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:12,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:12,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:13,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:17,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:17,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 12:28:17,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:17,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:28:17,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:17,902 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:17,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:28:17,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:28:17,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:17,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:17,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:17,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:18,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:18,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 12:28:18,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,033 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:18,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:18,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:28:18,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:18,075 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:18,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:18,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:18,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:28:18,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:18,254 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 167 [2020-09-25 12:28:18,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:18,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:18,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 12:28:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:18,445 INFO L134 CoverageAnalysis]: Checked inductivity of 37 backedges. 37 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:28:18,446 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [398100953] [2020-09-25 12:28:18,446 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:28:18,447 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:28:18,447 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [373149166] [2020-09-25 12:28:18,450 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:18,450 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:18,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:18,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:18,451 INFO L87 Difference]: Start difference. First operand 995 states and 1343 transitions. Second operand 7 states. [2020-09-25 12:28:20,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:20,901 INFO L93 Difference]: Finished difference Result 2198 states and 3031 transitions. [2020-09-25 12:28:20,902 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 12:28:20,902 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 137 [2020-09-25 12:28:20,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:20,913 INFO L225 Difference]: With dead ends: 2198 [2020-09-25 12:28:20,913 INFO L226 Difference]: Without dead ends: 1218 [2020-09-25 12:28:20,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:28:20,923 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1218 states. [2020-09-25 12:28:20,961 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1218 to 999. [2020-09-25 12:28:20,961 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 999 states. [2020-09-25 12:28:20,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 999 states to 999 states and 1293 transitions. [2020-09-25 12:28:20,969 INFO L78 Accepts]: Start accepts. Automaton has 999 states and 1293 transitions. Word has length 137 [2020-09-25 12:28:20,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:20,970 INFO L479 AbstractCegarLoop]: Abstraction has 999 states and 1293 transitions. [2020-09-25 12:28:20,970 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:20,970 INFO L276 IsEmpty]: Start isEmpty. Operand 999 states and 1293 transitions. [2020-09-25 12:28:20,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-25 12:28:20,977 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:20,977 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, 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] [2020-09-25 12:28:20,977 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:28:20,978 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:20,978 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:20,978 INFO L82 PathProgramCache]: Analyzing trace with hash -1168639507, now seen corresponding path program 1 times [2020-09-25 12:28:20,979 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:20,979 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618350131] [2020-09-25 12:28:20,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:21,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:21,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:21,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:22,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:23,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:26,099 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-25 12:28:26,099 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:28:26,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5076 [2020-09-25 12:28:26,100 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:26,100 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:28:26,100 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 12:28:26,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-09-25 12:28:26,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:26,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:26,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:26,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:26,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:26,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:26,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:28:26,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:26,227 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:26,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:26,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:28:26,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:26,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:26,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,503 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:26,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:28:26,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:26,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-25 12:28:26,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:26,505 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:26,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:26,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 12:28:26,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:26,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:28:26,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:26,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:26,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:26,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:28:26,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:28:26,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 246 [2020-09-25 12:28:26,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:26,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:26,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:26,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-09-25 12:28:26,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:26,991 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 146 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:28:26,992 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618350131] [2020-09-25 12:28:26,992 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:26,992 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:28:26,993 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [308039770] [2020-09-25 12:28:26,993 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:28:26,994 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:26,994 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:28:26,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:28:26,995 INFO L87 Difference]: Start difference. First operand 999 states and 1293 transitions. Second operand 9 states. [2020-09-25 12:28:32,401 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:32,402 INFO L93 Difference]: Finished difference Result 2622 states and 3589 transitions. [2020-09-25 12:28:32,403 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:28:32,403 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 216 [2020-09-25 12:28:32,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:32,411 INFO L225 Difference]: With dead ends: 2622 [2020-09-25 12:28:32,411 INFO L226 Difference]: Without dead ends: 976 [2020-09-25 12:28:32,419 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=106, Invalid=236, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:28:32,424 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 976 states. [2020-09-25 12:28:32,462 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 976 to 948. [2020-09-25 12:28:32,462 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 948 states. [2020-09-25 12:28:32,467 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 948 states to 948 states and 1096 transitions. [2020-09-25 12:28:32,467 INFO L78 Accepts]: Start accepts. Automaton has 948 states and 1096 transitions. Word has length 216 [2020-09-25 12:28:32,469 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:32,469 INFO L479 AbstractCegarLoop]: Abstraction has 948 states and 1096 transitions. [2020-09-25 12:28:32,469 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:28:32,469 INFO L276 IsEmpty]: Start isEmpty. Operand 948 states and 1096 transitions. [2020-09-25 12:28:32,475 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 327 [2020-09-25 12:28:32,475 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:32,476 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, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:28:32,476 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:28:32,476 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:32,476 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:32,477 INFO L82 PathProgramCache]: Analyzing trace with hash 678371119, now seen corresponding path program 1 times [2020-09-25 12:28:32,477 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:32,478 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [249715595] [2020-09-25 12:28:32,478 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:32,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:32,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:32,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:33,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:37,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 339 [2020-09-25 12:28:37,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:28:37,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5055 [2020-09-25 12:28:37,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:37,597 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:37,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:28:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:28:37,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 192 [2020-09-25 12:28:37,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:37,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:37,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:37,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:37,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:37,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:37,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:37,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:28:37,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:37,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:37,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:37,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:28:37,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:37,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:37,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:38,208 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:38,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 12:28:38,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:38,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-09-25 12:28:38,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:38,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:38,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 12:28:38,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:38,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-09-25 12:28:38,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:38,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:38,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:38,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:28:38,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:38,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 12:28:38,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:38,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:28:38,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 12:28:38,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:28:38,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:38,684 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 74 proven. 69 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:28:38,687 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [249715595] [2020-09-25 12:28:38,687 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:38,688 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:28:38,688 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2131306138] [2020-09-25 12:28:38,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:28:38,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:38,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:28:38,696 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:28:38,696 INFO L87 Difference]: Start difference. First operand 948 states and 1096 transitions. Second operand 7 states. [2020-09-25 12:28:40,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:40,924 INFO L93 Difference]: Finished difference Result 2542 states and 2980 transitions. [2020-09-25 12:28:40,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:28:40,930 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 326 [2020-09-25 12:28:40,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:40,939 INFO L225 Difference]: With dead ends: 2542 [2020-09-25 12:28:40,939 INFO L226 Difference]: Without dead ends: 1609 [2020-09-25 12:28:40,943 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:40,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1609 states. [2020-09-25 12:28:40,979 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1609 to 1338. [2020-09-25 12:28:40,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1338 states. [2020-09-25 12:28:40,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1338 states to 1338 states and 1520 transitions. [2020-09-25 12:28:40,985 INFO L78 Accepts]: Start accepts. Automaton has 1338 states and 1520 transitions. Word has length 326 [2020-09-25 12:28:40,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:40,986 INFO L479 AbstractCegarLoop]: Abstraction has 1338 states and 1520 transitions. [2020-09-25 12:28:40,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:28:40,986 INFO L276 IsEmpty]: Start isEmpty. Operand 1338 states and 1520 transitions. [2020-09-25 12:28:40,994 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 450 [2020-09-25 12:28:40,995 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:40,995 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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] [2020-09-25 12:28:40,995 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:28:40,996 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:40,996 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:40,996 INFO L82 PathProgramCache]: Analyzing trace with hash 1220329483, now seen corresponding path program 1 times [2020-09-25 12:28:40,996 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:40,997 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [685021870] [2020-09-25 12:28:40,997 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:41,087 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:41,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:42,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:43,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:44,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:46,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 464 [2020-09-25 12:28:46,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:28:46,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5036 [2020-09-25 12:28:46,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:46,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:28:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:28:46,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 310 [2020-09-25 12:28:46,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:46,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:28:46,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:46,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:46,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:28:46,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:46,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:28:46,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:46,243 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:28:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:28:46,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:28:46,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:28:46,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:28:46,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:46,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:46,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:46,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 12:28:46,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:46,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 12:28:46,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:46,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:46,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:46,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:46,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 12:28:46,448 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:28:46,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-25 12:28:46,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:46,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:47,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 185 [2020-09-25 12:28:47,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-09-25 12:28:47,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:47,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:28:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:28:47,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 184 [2020-09-25 12:28:47,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:47,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 328 [2020-09-25 12:28:47,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:47,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:47,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:28:47,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:28:47,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:28:47,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 12:28:47,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:28:47,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:28:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:28:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-09-25 12:28:47,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:28:47,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:28:47,945 INFO L134 CoverageAnalysis]: Checked inductivity of 399 backedges. 227 proven. 152 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 12:28:47,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [685021870] [2020-09-25 12:28:47,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:28:47,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:28:47,946 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858943502] [2020-09-25 12:28:47,947 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:28:47,947 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:28:47,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:28:47,948 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:28:47,948 INFO L87 Difference]: Start difference. First operand 1338 states and 1520 transitions. Second operand 8 states. [2020-09-25 12:28:49,496 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:28:49,497 INFO L93 Difference]: Finished difference Result 3067 states and 3483 transitions. [2020-09-25 12:28:49,498 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:28:49,499 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 449 [2020-09-25 12:28:49,499 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:28:49,508 INFO L225 Difference]: With dead ends: 3067 [2020-09-25 12:28:49,508 INFO L226 Difference]: Without dead ends: 1744 [2020-09-25 12:28:49,513 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:28:49,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1744 states. [2020-09-25 12:28:49,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1744 to 1722. [2020-09-25 12:28:49,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1722 states. [2020-09-25 12:28:49,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1722 states to 1722 states and 1918 transitions. [2020-09-25 12:28:49,563 INFO L78 Accepts]: Start accepts. Automaton has 1722 states and 1918 transitions. Word has length 449 [2020-09-25 12:28:49,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:28:49,564 INFO L479 AbstractCegarLoop]: Abstraction has 1722 states and 1918 transitions. [2020-09-25 12:28:49,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:28:49,564 INFO L276 IsEmpty]: Start isEmpty. Operand 1722 states and 1918 transitions. [2020-09-25 12:28:49,575 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 475 [2020-09-25 12:28:49,576 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:28:49,576 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 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, 1, 1, 1, 1, 1, 1] [2020-09-25 12:28:49,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:28:49,577 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:28:49,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:28:49,577 INFO L82 PathProgramCache]: Analyzing trace with hash -1938918908, now seen corresponding path program 1 times [2020-09-25 12:28:49,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:28:49,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [824956744] [2020-09-25 12:28:49,578 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:28:49,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:28:49,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:49,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:50,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:50,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:28:51,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking...