/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 04:28:00,247 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 04:28:00,251 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 04:28:00,293 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 04:28:00,294 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 04:28:00,302 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 04:28:00,304 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 04:28:00,307 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 04:28:00,310 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 04:28:00,314 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 04:28:00,315 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 04:28:00,316 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 04:28:00,316 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 04:28:00,319 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 04:28:00,322 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 04:28:00,323 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 04:28:00,325 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 04:28:00,326 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 04:28:00,327 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 04:28:00,335 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 04:28:00,338 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 04:28:00,339 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 04:28:00,339 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 04:28:00,340 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 04:28:00,352 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 04:28:00,352 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 04:28:00,353 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 04:28:00,356 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 04:28:00,356 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 04:28:00,358 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 04:28:00,358 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 04:28:00,359 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 04:28:00,360 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 04:28:00,361 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 04:28:00,362 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 04:28:00,363 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 04:28:00,363 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 04:28:00,364 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 04:28:00,364 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 04:28:00,365 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 04:28:00,366 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 04:28:00,367 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 04:28:00,410 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 04:28:00,410 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 04:28:00,412 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 04:28:00,412 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 04:28:00,413 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 04:28:00,413 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 04:28:00,413 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 04:28:00,413 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 04:28:00,414 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 04:28:00,414 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 04:28:00,415 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 04:28:00,415 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 04:28:00,415 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 04:28:00,416 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 04:28:00,416 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 04:28:00,416 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 04:28:00,416 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 04:28:00,416 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 04:28:00,417 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 04:28:00,417 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 04:28:00,417 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 04:28:00,417 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:00,417 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 04:28:00,418 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 04:28:00,418 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 04:28:00,418 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 04:28:00,418 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 04:28:00,418 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 04:28:00,419 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 04:28:00,419 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.2;log-additional-information=true; [2020-09-25 04:28:00,856 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 04:28:00,875 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 04:28:00,879 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 04:28:00,881 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 04:28:00,882 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 04:28:00,883 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 04:28:00,967 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2c782d4/68a01e868c7c4dd5b749c96b2502eaea/FLAG6946d0e17 [2020-09-25 04:28:01,632 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 04:28:01,633 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label34.c [2020-09-25 04:28:01,646 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2c782d4/68a01e868c7c4dd5b749c96b2502eaea/FLAG6946d0e17 [2020-09-25 04:28:01,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fc2c782d4/68a01e868c7c4dd5b749c96b2502eaea [2020-09-25 04:28:01,885 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 04:28:01,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 04:28:01,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:01,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 04:28:01,901 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 04:28:01,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:01" (1/1) ... [2020-09-25 04:28:01,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@18153661 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:01, skipping insertion in model container [2020-09-25 04:28:01,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 04:28:01" (1/1) ... [2020-09-25 04:28:01,919 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 04:28:01,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 04:28:02,439 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:02,446 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 04:28:02,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 04:28:02,759 INFO L208 MainTranslator]: Completed translation [2020-09-25 04:28:02,761 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02 WrapperNode [2020-09-25 04:28:02,761 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 04:28:02,762 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 04:28:02,762 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 04:28:02,762 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 04:28:02,783 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... [2020-09-25 04:28:02,786 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... [2020-09-25 04:28:02,824 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... [2020-09-25 04:28:02,825 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... [2020-09-25 04:28:02,864 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... [2020-09-25 04:28:02,885 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... [2020-09-25 04:28:02,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... [2020-09-25 04:28:02,897 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 04:28:02,898 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 04:28:02,898 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 04:28:02,898 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 04:28:02,903 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 04:28:03,009 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 04:28:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 04:28:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 04:28:03,010 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 04:28:03,010 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 04:28:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 04:28:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 04:28:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 04:28:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 04:28:03,011 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 04:28:03,012 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 04:28:04,646 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 04:28:04,646 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 04:28:04,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:04 BoogieIcfgContainer [2020-09-25 04:28:04,657 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 04:28:04,658 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 04:28:04,658 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 04:28:04,662 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 04:28:04,663 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 04:28:01" (1/3) ... [2020-09-25 04:28:04,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c13436c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:04, skipping insertion in model container [2020-09-25 04:28:04,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 04:28:02" (2/3) ... [2020-09-25 04:28:04,665 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@c13436c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 04:28:04, skipping insertion in model container [2020-09-25 04:28:04,665 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 04:28:04" (3/3) ... [2020-09-25 04:28:04,668 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label34.c [2020-09-25 04:28:04,678 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 04:28:04,690 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 04:28:04,712 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 04:28:04,750 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 04:28:04,750 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 04:28:04,750 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 04:28:04,750 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 04:28:04,751 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 04:28:04,751 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 04:28:04,751 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 04:28:04,751 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 04:28:04,785 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-25 04:28:04,806 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 04:28:04,806 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:04,808 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:04,809 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:04,817 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:04,817 INFO L82 PathProgramCache]: Analyzing trace with hash -1247500167, now seen corresponding path program 1 times [2020-09-25 04:28:04,829 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:04,829 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [935757112] [2020-09-25 04:28:04,830 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:05,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:05,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:06,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:06,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:07,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:09,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:10,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:10,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-25 04:28:10,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 04:28:10,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-25 04:28:10,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:10,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 04:28:10,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 04:28:10,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 04:28:10,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:10,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:10,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:10,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:10,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:10,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:10,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 04:28:10,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:10,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:10,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-25 04:28:10,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:10,414 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:10,415 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [935757112] [2020-09-25 04:28:10,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:10,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 04:28:10,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [940802481] [2020-09-25 04:28:10,425 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 04:28:10,425 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:10,443 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 04:28:10,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 04:28:10,447 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 4 states. [2020-09-25 04:28:12,884 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:12,885 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-25 04:28:12,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 04:28:12,887 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 124 [2020-09-25 04:28:12,888 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:12,912 INFO L225 Difference]: With dead ends: 1248 [2020-09-25 04:28:12,912 INFO L226 Difference]: Without dead ends: 670 [2020-09-25 04:28:12,925 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:12,951 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-25 04:28:13,027 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-25 04:28:13,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-25 04:28:13,033 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-25 04:28:13,035 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 124 [2020-09-25 04:28:13,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:13,036 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-25 04:28:13,036 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 04:28:13,037 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-25 04:28:13,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 142 [2020-09-25 04:28:13,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:13,045 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:28:13,046 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 04:28:13,046 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:13,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:13,047 INFO L82 PathProgramCache]: Analyzing trace with hash 2003096754, now seen corresponding path program 1 times [2020-09-25 04:28:13,047 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:13,047 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2048689070] [2020-09-25 04:28:13,048 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:13,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:13,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:13,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:14,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:15,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:15,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:16,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:17,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:18,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 152 [2020-09-25 04:28:18,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:28:18,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5025 [2020-09-25 04:28:18,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:18,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:18,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-25 04:28:18,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-09-25 04:28:18,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 04:28:18,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:18,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:18,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:18,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:18,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:18,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:28:18,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:18,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:18,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:18,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:18,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:18,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:18,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:18,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:18,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:28:18,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 04:28:18,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:18,442 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:18,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-25 04:28:18,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:18,476 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:18,476 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2048689070] [2020-09-25 04:28:18,477 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:18,477 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:18,477 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1319135641] [2020-09-25 04:28:18,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:18,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:18,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:18,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:18,481 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-25 04:28:20,394 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:20,394 INFO L93 Difference]: Finished difference Result 1533 states and 1846 transitions. [2020-09-25 04:28:20,395 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:20,395 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 141 [2020-09-25 04:28:20,396 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:20,403 INFO L225 Difference]: With dead ends: 1533 [2020-09-25 04:28:20,403 INFO L226 Difference]: Without dead ends: 934 [2020-09-25 04:28:20,406 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:20,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-25 04:28:20,448 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 772. [2020-09-25 04:28:20,448 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 772 states. [2020-09-25 04:28:20,453 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 772 states to 772 states and 953 transitions. [2020-09-25 04:28:20,454 INFO L78 Accepts]: Start accepts. Automaton has 772 states and 953 transitions. Word has length 141 [2020-09-25 04:28:20,454 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:20,455 INFO L479 AbstractCegarLoop]: Abstraction has 772 states and 953 transitions. [2020-09-25 04:28:20,455 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:20,455 INFO L276 IsEmpty]: Start isEmpty. Operand 772 states and 953 transitions. [2020-09-25 04:28:20,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 151 [2020-09-25 04:28:20,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:20,460 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-09-25 04:28:20,461 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 04:28:20,461 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:20,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:20,461 INFO L82 PathProgramCache]: Analyzing trace with hash 180693394, now seen corresponding path program 1 times [2020-09-25 04:28:20,462 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:20,462 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [957538519] [2020-09-25 04:28:20,462 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:20,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:20,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:20,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:21,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:22,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:23,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:25,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-25 04:28:25,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:28:25,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 04:28:25,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:25,504 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:25,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-25 04:28:25,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-09-25 04:28:25,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:25,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:25,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:25,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:25,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:25,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:25,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 04:28:25,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:25,709 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:25,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:25,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:25,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:25,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:25,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:25,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:25,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:25,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-25 04:28:25,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:25,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:28:25,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:25,771 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:25,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 04:28:25,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:25,835 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 15 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:25,835 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [957538519] [2020-09-25 04:28:25,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:25,836 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:25,836 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1337417343] [2020-09-25 04:28:25,837 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:25,837 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:25,838 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:25,838 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:25,838 INFO L87 Difference]: Start difference. First operand 772 states and 953 transitions. Second operand 5 states. [2020-09-25 04:28:27,469 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:27,470 INFO L93 Difference]: Finished difference Result 1986 states and 2561 transitions. [2020-09-25 04:28:27,470 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:27,470 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 150 [2020-09-25 04:28:27,471 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:27,482 INFO L225 Difference]: With dead ends: 1986 [2020-09-25 04:28:27,482 INFO L226 Difference]: Without dead ends: 1236 [2020-09-25 04:28:27,487 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:27,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1236 states. [2020-09-25 04:28:27,549 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1236 to 1226. [2020-09-25 04:28:27,549 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1226 states. [2020-09-25 04:28:27,557 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1226 states to 1226 states and 1541 transitions. [2020-09-25 04:28:27,558 INFO L78 Accepts]: Start accepts. Automaton has 1226 states and 1541 transitions. Word has length 150 [2020-09-25 04:28:27,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:27,559 INFO L479 AbstractCegarLoop]: Abstraction has 1226 states and 1541 transitions. [2020-09-25 04:28:27,560 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:27,560 INFO L276 IsEmpty]: Start isEmpty. Operand 1226 states and 1541 transitions. [2020-09-25 04:28:27,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 176 [2020-09-25 04:28:27,567 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:27,576 INFO L422 BasicCegarLoop]: trace histogram [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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:27,577 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 04:28:27,577 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:27,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:27,577 INFO L82 PathProgramCache]: Analyzing trace with hash 253863597, now seen corresponding path program 1 times [2020-09-25 04:28:27,578 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:27,578 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1051318957] [2020-09-25 04:28:27,579 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:27,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:27,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:28,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:29,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:30,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:32,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 188 [2020-09-25 04:28:32,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 04:28:32,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 04:28:32,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:32,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:32,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 75 [2020-09-25 04:28:32,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-09-25 04:28:32,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:32,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:32,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:32,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:32,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:32,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:32,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 04:28:32,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:32,796 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:32,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:32,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:32,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:32,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:32,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:32,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:32,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:28:32,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:32,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 04:28:32,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:32,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:32,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:32,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:32,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:32,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:28:32,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:32,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:32,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-25 04:28:32,874 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:32,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 04:28:32,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:32,875 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:32,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-09-25 04:28:32,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:32,989 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 36 proven. 2 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 04:28:32,990 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1051318957] [2020-09-25 04:28:32,990 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:32,991 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 04:28:32,991 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [370099499] [2020-09-25 04:28:32,991 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 04:28:32,992 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:32,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 04:28:32,993 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 04:28:32,993 INFO L87 Difference]: Start difference. First operand 1226 states and 1541 transitions. Second operand 5 states. [2020-09-25 04:28:35,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:35,109 INFO L93 Difference]: Finished difference Result 3346 states and 4362 transitions. [2020-09-25 04:28:35,110 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 04:28:35,110 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 175 [2020-09-25 04:28:35,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:35,125 INFO L225 Difference]: With dead ends: 3346 [2020-09-25 04:28:35,125 INFO L226 Difference]: Without dead ends: 2142 [2020-09-25 04:28:35,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 04:28:35,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2142 states. [2020-09-25 04:28:35,192 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2142 to 1530. [2020-09-25 04:28:35,192 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1530 states. [2020-09-25 04:28:35,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1530 states to 1530 states and 1894 transitions. [2020-09-25 04:28:35,201 INFO L78 Accepts]: Start accepts. Automaton has 1530 states and 1894 transitions. Word has length 175 [2020-09-25 04:28:35,202 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:35,202 INFO L479 AbstractCegarLoop]: Abstraction has 1530 states and 1894 transitions. [2020-09-25 04:28:35,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 04:28:35,202 INFO L276 IsEmpty]: Start isEmpty. Operand 1530 states and 1894 transitions. [2020-09-25 04:28:35,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 194 [2020-09-25 04:28:35,212 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:35,212 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, 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] [2020-09-25 04:28:35,212 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 04:28:35,213 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:35,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:35,213 INFO L82 PathProgramCache]: Analyzing trace with hash -1487586036, now seen corresponding path program 1 times [2020-09-25 04:28:35,213 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:35,213 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [932753619] [2020-09-25 04:28:35,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:35,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:35,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:35,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,163 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 204 [2020-09-25 04:28:36,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 04:28:36,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 907 [2020-09-25 04:28:36,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,165 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 04:28:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 04:28:36,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 04:28:36,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:36,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:36,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:36,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:36,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:36,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 04:28:36,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-25 04:28:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 04:28:36,311 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:36,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:36,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:36,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:36,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:28:36,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:36,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 04:28:36,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:36,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:36,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:36,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:28:36,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:36,538 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 57 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 04:28:36,538 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [932753619] [2020-09-25 04:28:36,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 04:28:36,539 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 04:28:36,539 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1191515140] [2020-09-25 04:28:36,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:36,540 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:36,540 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:36,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:36,540 INFO L87 Difference]: Start difference. First operand 1530 states and 1894 transitions. Second operand 7 states. [2020-09-25 04:28:38,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:38,794 INFO L93 Difference]: Finished difference Result 3095 states and 3906 transitions. [2020-09-25 04:28:38,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:28:38,795 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 193 [2020-09-25 04:28:38,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:38,804 INFO L225 Difference]: With dead ends: 3095 [2020-09-25 04:28:38,804 INFO L226 Difference]: Without dead ends: 1587 [2020-09-25 04:28:38,810 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 04:28:38,813 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1587 states. [2020-09-25 04:28:38,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1587 to 1531. [2020-09-25 04:28:38,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1531 states. [2020-09-25 04:28:38,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1531 states to 1531 states and 1797 transitions. [2020-09-25 04:28:38,859 INFO L78 Accepts]: Start accepts. Automaton has 1531 states and 1797 transitions. Word has length 193 [2020-09-25 04:28:38,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 04:28:38,859 INFO L479 AbstractCegarLoop]: Abstraction has 1531 states and 1797 transitions. [2020-09-25 04:28:38,859 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 04:28:38,859 INFO L276 IsEmpty]: Start isEmpty. Operand 1531 states and 1797 transitions. [2020-09-25 04:28:38,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 229 [2020-09-25 04:28:38,866 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 04:28:38,866 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 04:28:38,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 04:28:38,867 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 04:28:38,867 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 04:28:38,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1088706783, now seen corresponding path program 1 times [2020-09-25 04:28:38,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 04:28:38,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [859701575] [2020-09-25 04:28:38,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 04:28:38,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:38,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:39,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:43,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:43,849 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 243 [2020-09-25 04:28:43,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 04:28:43,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4953 [2020-09-25 04:28:43,850 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:43,851 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:43,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 58 [2020-09-25 04:28:43,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-25 04:28:43,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:43,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 04:28:43,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:43,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 04:28:44,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 04:28:44,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:44,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:44,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:44,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 04:28:44,033 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:44,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 04:28:44,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 04:28:44,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 04:28:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:44,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 04:28:44,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 04:28:44,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 04:28:44,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:44,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 14 [2020-09-25 04:28:44,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 04:28:44,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 04:28:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 04:28:44,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-09-25 04:28:44,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:44,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 63 [2020-09-25 04:28:44,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 04:28:44,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 04:28:44,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 04:28:44,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 04:28:44,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 04:28:44,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 04:28:44,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 04:28:44,256 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 04:28:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 04:28:44,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 04:28:44,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-09-25 04:28:44,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 04:28:44,423 INFO L134 CoverageAnalysis]: Checked inductivity of 119 backedges. 106 proven. 2 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 04:28:44,424 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [859701575] [2020-09-25 04:28:44,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 04:28:44,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 04:28:44,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57070479] [2020-09-25 04:28:44,426 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 04:28:44,426 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 04:28:44,427 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 04:28:44,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-25 04:28:44,427 INFO L87 Difference]: Start difference. First operand 1531 states and 1797 transitions. Second operand 7 states. [2020-09-25 04:28:46,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 04:28:46,510 INFO L93 Difference]: Finished difference Result 3356 states and 3926 transitions. [2020-09-25 04:28:46,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 04:28:46,510 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 228 [2020-09-25 04:28:46,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 04:28:46,519 INFO L225 Difference]: With dead ends: 3356 [2020-09-25 04:28:46,519 INFO L226 Difference]: Without dead ends: 1482 [2020-09-25 04:28:46,525 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 04:28:46,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1482 states. [2020-09-25 04:28:46,568 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1482 to 1470. [2020-09-25 04:28:46,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1470 states. [2020-09-25 04:28:46,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1470 states to 1470 states and 1699 transitions.