/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=0.4 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 05:37:38,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 05:37:38,359 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 05:37:38,405 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 05:37:38,406 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 05:37:38,413 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 05:37:38,416 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 05:37:38,419 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 05:37:38,422 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 05:37:38,425 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 05:37:38,426 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 05:37:38,427 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 05:37:38,427 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 05:37:38,430 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 05:37:38,433 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 05:37:38,435 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 05:37:38,436 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 05:37:38,439 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 05:37:38,440 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 05:37:38,449 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 05:37:38,451 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 05:37:38,452 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 05:37:38,453 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 05:37:38,454 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 05:37:38,471 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 05:37:38,471 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 05:37:38,471 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 05:37:38,474 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 05:37:38,475 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 05:37:38,476 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 05:37:38,476 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 05:37:38,479 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 05:37:38,483 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 05:37:38,484 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 05:37:38,485 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 05:37:38,485 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 05:37:38,487 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 05:37:38,487 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 05:37:38,487 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 05:37:38,488 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 05:37:38,489 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 05:37:38,490 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 05:37:38,534 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 05:37:38,535 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 05:37:38,537 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 05:37:38,537 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 05:37:38,538 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 05:37:38,538 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 05:37:38,538 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 05:37:38,538 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 05:37:38,539 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 05:37:38,539 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 05:37:38,540 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 05:37:38,540 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 05:37:38,540 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 05:37:38,541 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 05:37:38,541 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 05:37:38,541 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 05:37:38,541 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 05:37:38,542 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 05:37:38,542 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 05:37:38,542 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 05:37:38,542 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 05:37:38,543 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 05:37:38,543 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 05:37:38,543 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 05:37:38,543 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 05:37:38,543 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 05:37:38,544 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 05:37:38,544 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 05:37:38,544 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 05:37:38,544 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=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.4;log-additional-information=true; [2020-09-25 05:37:38,981 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 05:37:39,001 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 05:37:39,007 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 05:37:39,009 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 05:37:39,009 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 05:37:39,010 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 05:37:39,089 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83d8fb644/3e20ae3873294c76bd71ca3952a351d5/FLAGea453d191 [2020-09-25 05:37:39,747 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 05:37:39,748 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 05:37:39,769 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83d8fb644/3e20ae3873294c76bd71ca3952a351d5/FLAGea453d191 [2020-09-25 05:37:39,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/83d8fb644/3e20ae3873294c76bd71ca3952a351d5 [2020-09-25 05:37:39,956 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 05:37:39,963 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 05:37:39,964 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:39,965 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 05:37:39,969 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 05:37:39,971 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,975 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5cb7919e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:39, skipping insertion in model container [2020-09-25 05:37:39,976 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 05:37:39" (1/1) ... [2020-09-25 05:37:39,986 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 05:37:40,042 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 05:37:40,605 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:40,618 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 05:37:40,866 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 05:37:40,890 INFO L208 MainTranslator]: Completed translation [2020-09-25 05:37:40,892 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40 WrapperNode [2020-09-25 05:37:40,892 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 05:37:40,893 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 05:37:40,894 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 05:37:40,894 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 05:37:40,915 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (1/1) ... [2020-09-25 05:37:40,917 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (1/1) ... [2020-09-25 05:37:40,939 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (1/1) ... [2020-09-25 05:37:40,940 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (1/1) ... [2020-09-25 05:37:40,978 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (1/1) ... [2020-09-25 05:37:41,008 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (1/1) ... [2020-09-25 05:37:41,014 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (1/1) ... [2020-09-25 05:37:41,025 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 05:37:41,026 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 05:37:41,026 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 05:37:41,026 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 05:37:41,028 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (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 05:37:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 05:37:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 05:37:41,140 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 05:37:41,141 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 05:37:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 05:37:41,141 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 05:37:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 05:37:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 05:37:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 05:37:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 05:37:41,142 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 05:37:42,906 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 05:37:42,906 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 05:37:42,917 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:42 BoogieIcfgContainer [2020-09-25 05:37:42,917 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 05:37:42,918 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 05:37:42,919 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 05:37:42,923 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 05:37:42,923 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 05:37:39" (1/3) ... [2020-09-25 05:37:42,924 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:42, skipping insertion in model container [2020-09-25 05:37:42,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 05:37:40" (2/3) ... [2020-09-25 05:37:42,925 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@600cbf66 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 05:37:42, skipping insertion in model container [2020-09-25 05:37:42,925 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 05:37:42" (3/3) ... [2020-09-25 05:37:42,928 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 05:37:42,940 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 05:37:42,952 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 05:37:42,976 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 05:37:43,012 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 05:37:43,012 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 05:37:43,012 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 05:37:43,012 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 05:37:43,013 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 05:37:43,013 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 05:37:43,013 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 05:37:43,013 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 05:37:43,045 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 05:37:43,057 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 05:37:43,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:43,059 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] [2020-09-25 05:37:43,060 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:43,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:43,068 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 05:37:43,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:43,081 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1079871953] [2020-09-25 05:37:43,081 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:43,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:43,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:43,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:44,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:44,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 05:37:44,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 05:37:44,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 975 [2020-09-25 05:37:44,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:44,254 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:37:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 05:37:44,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:37:44,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 05:37:44,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:44,436 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:44,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:44,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:44,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:44,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:44,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 05:37:44,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:44,460 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:44,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 05:37:44,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:44,491 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 05:37:44,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1079871953] [2020-09-25 05:37:44,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:37:44,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 05:37:44,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603439560] [2020-09-25 05:37:44,503 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 05:37:44,503 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:44,523 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 05:37:44,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 05:37:44,527 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 05:37:47,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:47,082 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 05:37:47,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 05:37:47,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 05:37:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:47,108 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 05:37:47,109 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 05:37:47,120 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 05:37:47,143 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 05:37:47,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 05:37:47,212 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 05:37:47,216 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 05:37:47,218 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 05:37:47,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:47,219 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 05:37:47,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 05:37:47,220 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 05:37:47,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 05:37:47,229 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:47,230 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, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 05:37:47,230 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 05:37:47,230 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:47,231 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:47,231 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 05:37:47,231 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:47,232 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929347013] [2020-09-25 05:37:47,232 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:47,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:47,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:47,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:48,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:48,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:48,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:52,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 05:37:52,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 05:37:52,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4976 [2020-09-25 05:37:52,266 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:52,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:37:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 05:37:52,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 05:37:52,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:52,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:37:52,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:52,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:52,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:37:52,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:52,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:37:52,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:52,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:52,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:37:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:52,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:37:52,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:52,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:37:52,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:52,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:52,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:37:52,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:37:52,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:37:52,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-09-25 05:37:52,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:37:52,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:37:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:37:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:37:52,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 05:37:52,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:37:52,576 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:37:52,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929347013] [2020-09-25 05:37:52,577 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:37:52,577 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 05:37:52,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158164498] [2020-09-25 05:37:52,579 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 05:37:52,580 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:37:52,580 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 05:37:52,580 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 05:37:52,580 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 05:37:55,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:37:55,295 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2020-09-25 05:37:55,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 05:37:55,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 05:37:55,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:37:55,303 INFO L225 Difference]: With dead ends: 850 [2020-09-25 05:37:55,303 INFO L226 Difference]: Without dead ends: 848 [2020-09-25 05:37:55,305 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:37:55,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-09-25 05:37:55,345 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2020-09-25 05:37:55,345 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-25 05:37:55,350 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1119 transitions. [2020-09-25 05:37:55,351 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1119 transitions. Word has length 157 [2020-09-25 05:37:55,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:37:55,356 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1119 transitions. [2020-09-25 05:37:55,356 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 05:37:55,357 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1119 transitions. [2020-09-25 05:37:55,373 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 05:37:55,373 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:37:55,374 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, 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] [2020-09-25 05:37:55,374 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 05:37:55,374 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:37:55,378 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:37:55,378 INFO L82 PathProgramCache]: Analyzing trace with hash -1579224162, now seen corresponding path program 1 times [2020-09-25 05:37:55,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:37:55,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [668272217] [2020-09-25 05:37:55,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:37:55,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:37:55,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:55,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:56,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:37:57,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:00,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 05:38:00,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:00,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-25 05:38:00,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:00,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:00,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 05:38:00,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 05:38:00,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 05:38:00,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:00,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:00,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:00,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:00,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:00,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 05:38:00,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:00,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:00,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:00,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 05:38:00,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:00,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:00,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:00,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:00,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:00,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 05:38:00,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:00,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 243 [2020-09-25 05:38:00,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:00,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:00,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:00,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:00,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 05:38:00,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:01,061 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 05:38:01,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [668272217] [2020-09-25 05:38:01,062 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 05:38:01,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 05:38:01,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1054403987] [2020-09-25 05:38:01,064 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:01,065 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:01,065 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:01,065 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:01,066 INFO L87 Difference]: Start difference. First operand 848 states and 1119 transitions. Second operand 7 states. [2020-09-25 05:38:03,387 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:03,387 INFO L93 Difference]: Finished difference Result 1852 states and 2503 transitions. [2020-09-25 05:38:03,388 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:38:03,388 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 05:38:03,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:03,395 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 05:38:03,395 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 05:38:03,399 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 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 05:38:03,401 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 05:38:03,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 853. [2020-09-25 05:38:03,431 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-09-25 05:38:03,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1091 transitions. [2020-09-25 05:38:03,436 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1091 transitions. Word has length 214 [2020-09-25 05:38:03,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:03,437 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1091 transitions. [2020-09-25 05:38:03,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:03,437 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1091 transitions. [2020-09-25 05:38:03,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-25 05:38:03,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:03,444 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 05:38:03,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 05:38:03,444 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:03,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:03,445 INFO L82 PathProgramCache]: Analyzing trace with hash 63532064, now seen corresponding path program 1 times [2020-09-25 05:38:03,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:03,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [720463682] [2020-09-25 05:38:03,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:03,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:03,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:03,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:04,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:08,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-25 05:38:08,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:08,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 05:38:08,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:08,517 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:08,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:08,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 96 [2020-09-25 05:38:08,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-09-25 05:38:08,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:08,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:08,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:08,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:08,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:08,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:08,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 05:38:08,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:08,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:08,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:08,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:08,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:08,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:08,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:08,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:08,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:08,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 05:38:08,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:08,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 05:38:08,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:08,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 05:38:08,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:08,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 05:38:08,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:08,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 05:38:08,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:08,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:09,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:09,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 05:38:09,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:09,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 366 [2020-09-25 05:38:09,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:09,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:09,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-09-25 05:38:09,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:09,406 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 197 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:09,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [720463682] [2020-09-25 05:38:09,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:09,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 05:38:09,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450893577] [2020-09-25 05:38:09,408 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 05:38:09,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:09,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 05:38:09,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 05:38:09,410 INFO L87 Difference]: Start difference. First operand 853 states and 1091 transitions. Second operand 7 states. [2020-09-25 05:38:11,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:11,928 INFO L93 Difference]: Finished difference Result 2053 states and 2817 transitions. [2020-09-25 05:38:11,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 05:38:11,929 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 286 [2020-09-25 05:38:11,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:11,942 INFO L225 Difference]: With dead ends: 2053 [2020-09-25 05:38:11,943 INFO L226 Difference]: Without dead ends: 1365 [2020-09-25 05:38:11,947 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 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 05:38:11,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1365 states. [2020-09-25 05:38:12,023 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1365 to 1321. [2020-09-25 05:38:12,023 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1321 states. [2020-09-25 05:38:12,032 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1321 states to 1321 states and 1733 transitions. [2020-09-25 05:38:12,032 INFO L78 Accepts]: Start accepts. Automaton has 1321 states and 1733 transitions. Word has length 286 [2020-09-25 05:38:12,033 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:12,033 INFO L479 AbstractCegarLoop]: Abstraction has 1321 states and 1733 transitions. [2020-09-25 05:38:12,034 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 05:38:12,034 INFO L276 IsEmpty]: Start isEmpty. Operand 1321 states and 1733 transitions. [2020-09-25 05:38:12,040 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 05:38:12,041 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:12,041 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:12,041 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 05:38:12,041 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:12,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:12,042 INFO L82 PathProgramCache]: Analyzing trace with hash -2136866632, now seen corresponding path program 1 times [2020-09-25 05:38:12,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:12,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699263025] [2020-09-25 05:38:12,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:12,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:12,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:12,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:13,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:14,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-25 05:38:17,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 05:38:17,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:38:17,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,142 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 05:38:17,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 05:38:17,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:17,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:17,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:17,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 05:38:17,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:17,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 05:38:17,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,270 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 05:38:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:17,271 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 05:38:17,271 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:17,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 05:38:17,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:17,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 05:38:17,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:17,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 05:38:17,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 05:38:17,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 05:38:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 05:38:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:17,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 05:38:17,559 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:17,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:17,773 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:17,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 05:38:17,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 05:38:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 05:38:17,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:17,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 05:38:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 05:38:17,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 05:38:17,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 05:38:17,955 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 05:38:17,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [699263025] [2020-09-25 05:38:17,956 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 05:38:17,956 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 05:38:17,956 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [188195535] [2020-09-25 05:38:17,957 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 05:38:17,957 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 05:38:17,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 05:38:17,958 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 05:38:17,958 INFO L87 Difference]: Start difference. First operand 1321 states and 1733 transitions. Second operand 8 states. [2020-09-25 05:38:22,043 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 05:38:22,043 INFO L93 Difference]: Finished difference Result 4017 states and 5828 transitions. [2020-09-25 05:38:22,044 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 05:38:22,044 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-09-25 05:38:22,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 05:38:22,064 INFO L225 Difference]: With dead ends: 4017 [2020-09-25 05:38:22,064 INFO L226 Difference]: Without dead ends: 2861 [2020-09-25 05:38:22,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=83, Invalid=189, Unknown=0, NotChecked=0, Total=272 [2020-09-25 05:38:22,075 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2861 states. [2020-09-25 05:38:22,172 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2861 to 2753. [2020-09-25 05:38:22,172 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2753 states. [2020-09-25 05:38:22,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2753 states to 2753 states and 3860 transitions. [2020-09-25 05:38:22,185 INFO L78 Accepts]: Start accepts. Automaton has 2753 states and 3860 transitions. Word has length 302 [2020-09-25 05:38:22,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 05:38:22,186 INFO L479 AbstractCegarLoop]: Abstraction has 2753 states and 3860 transitions. [2020-09-25 05:38:22,186 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 05:38:22,186 INFO L276 IsEmpty]: Start isEmpty. Operand 2753 states and 3860 transitions. [2020-09-25 05:38:22,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 05:38:22,196 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 05:38:22,196 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 05:38:22,197 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 05:38:22,197 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 05:38:22,197 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 05:38:22,197 INFO L82 PathProgramCache]: Analyzing trace with hash -669780688, now seen corresponding path program 1 times [2020-09-25 05:38:22,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 05:38:22,198 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [733159418] [2020-09-25 05:38:22,198 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 05:38:22,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:22,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:22,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:22,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:23,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 05:38:27,251 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 05:38:27,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 05:38:27,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 05:38:27,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 05:38:27,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 05:38:27,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 05:38:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 05:38:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 05:38:27,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 05:38:27,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 05:38:27,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 05:38:27,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 05:38:27,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking...