/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=1000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --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_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 19:26:34,250 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 19:26:34,255 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 19:26:34,299 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 19:26:34,300 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 19:26:34,308 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 19:26:34,310 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 19:26:34,314 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 19:26:34,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 19:26:34,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 19:26:34,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 19:26:34,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 19:26:34,323 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 19:26:34,325 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 19:26:34,328 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 19:26:34,330 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 19:26:34,331 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 19:26:34,332 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 19:26:34,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 19:26:34,342 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 19:26:34,345 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 19:26:34,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 19:26:34,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 19:26:34,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 19:26:34,360 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 19:26:34,360 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 19:26:34,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 19:26:34,369 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 19:26:34,369 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 19:26:34,373 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 19:26:34,374 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 19:26:34,375 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 19:26:34,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 19:26:34,378 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 19:26:34,379 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 19:26:34,379 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 19:26:34,380 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 19:26:34,380 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 19:26:34,380 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 19:26:34,381 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 19:26:34,382 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 19:26:34,383 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 19:26:34,429 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 19:26:34,429 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 19:26:34,432 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 19:26:34,432 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 19:26:34,432 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 19:26:34,432 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 19:26:34,433 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 19:26:34,433 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 19:26:34,433 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 19:26:34,433 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 19:26:34,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 19:26:34,435 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 19:26:34,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 19:26:34,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 19:26:34,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 19:26:34,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 19:26:34,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 19:26:34,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 19:26:34,436 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 19:26:34,436 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 19:26:34,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 19:26:34,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:34,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 19:26:34,437 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 19:26:34,437 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 19:26:34,438 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 19:26:34,438 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 19:26:34,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 19:26:34,438 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 19:26:34,438 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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 19:26:34,866 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 19:26:34,891 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 19:26:34,894 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 19:26:34,896 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 19:26:34,896 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 19:26:34,897 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 19:26:34,976 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367f2acdf/9ffe6119c41e4d2597f47464c7ade050/FLAGf23a60c0c [2020-09-24 19:26:35,703 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 19:26:35,704 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem02_label05.c [2020-09-24 19:26:35,717 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367f2acdf/9ffe6119c41e4d2597f47464c7ade050/FLAGf23a60c0c [2020-09-24 19:26:35,854 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/367f2acdf/9ffe6119c41e4d2597f47464c7ade050 [2020-09-24 19:26:35,871 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 19:26:35,877 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 19:26:35,881 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:35,882 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 19:26:35,886 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 19:26:35,887 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:35" (1/1) ... [2020-09-24 19:26:35,892 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1fe12ef2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:35, skipping insertion in model container [2020-09-24 19:26:35,893 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 07:26:35" (1/1) ... [2020-09-24 19:26:35,903 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 19:26:35,972 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 19:26:36,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:36,518 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 19:26:36,639 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 19:26:36,660 INFO L208 MainTranslator]: Completed translation [2020-09-24 19:26:36,661 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36 WrapperNode [2020-09-24 19:26:36,661 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 19:26:36,662 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 19:26:36,662 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 19:26:36,662 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 19:26:36,680 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... [2020-09-24 19:26:36,680 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... [2020-09-24 19:26:36,701 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... [2020-09-24 19:26:36,701 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... [2020-09-24 19:26:36,754 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... [2020-09-24 19:26:36,780 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... [2020-09-24 19:26:36,792 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... [2020-09-24 19:26:36,800 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 19:26:36,801 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 19:26:36,801 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 19:26:36,801 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 19:26:36,803 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 19:26:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 19:26:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 19:26:36,903 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 19:26:36,904 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 19:26:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 19:26:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 19:26:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 19:26:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 19:26:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 19:26:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 19:26:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 19:26:38,372 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 19:26:38,373 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 19:26:38,386 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:38 BoogieIcfgContainer [2020-09-24 19:26:38,386 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 19:26:38,388 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 19:26:38,388 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 19:26:38,393 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 19:26:38,393 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 07:26:35" (1/3) ... [2020-09-24 19:26:38,395 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:38, skipping insertion in model container [2020-09-24 19:26:38,395 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 07:26:36" (2/3) ... [2020-09-24 19:26:38,396 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3887f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 07:26:38, skipping insertion in model container [2020-09-24 19:26:38,396 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 07:26:38" (3/3) ... [2020-09-24 19:26:38,399 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem02_label05.c [2020-09-24 19:26:38,413 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 19:26:38,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 19:26:38,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 19:26:38,504 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 19:26:38,505 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 19:26:38,505 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 19:26:38,505 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 19:26:38,505 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 19:26:38,505 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 19:26:38,506 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 19:26:38,506 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 19:26:38,551 INFO L276 IsEmpty]: Start isEmpty. Operand 527 states. [2020-09-24 19:26:38,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 153 [2020-09-24 19:26:38,591 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:38,592 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:38,593 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:38,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:38,601 INFO L82 PathProgramCache]: Analyzing trace with hash 1976766121, now seen corresponding path program 1 times [2020-09-24 19:26:38,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:38,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [66102414] [2020-09-24 19:26:38,612 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:38,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:38,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:39,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:39,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-09-24 19:26:39,877 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:39,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-24 19:26:39,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:39,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 19:26:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:26:39,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 141 [2020-09-24 19:26:39,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 19:26:40,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:40,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:40,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:40,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:40,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:40,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:40,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:26:40,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:40,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 19:26:40,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:40,381 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:40,383 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [66102414] [2020-09-24 19:26:40,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 19:26:40,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 19:26:40,387 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638374807] [2020-09-24 19:26:40,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:40,397 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:40,416 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:40,417 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:40,420 INFO L87 Difference]: Start difference. First operand 527 states. Second operand 5 states. [2020-09-24 19:26:43,001 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:43,001 INFO L93 Difference]: Finished difference Result 1248 states and 1696 transitions. [2020-09-24 19:26:43,002 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 19:26:43,003 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 152 [2020-09-24 19:26:43,005 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:43,041 INFO L225 Difference]: With dead ends: 1248 [2020-09-24 19:26:43,041 INFO L226 Difference]: Without dead ends: 670 [2020-09-24 19:26:43,053 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:43,073 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 670 states. [2020-09-24 19:26:43,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 670 to 621. [2020-09-24 19:26:43,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 621 states. [2020-09-24 19:26:43,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 621 states to 621 states and 723 transitions. [2020-09-24 19:26:43,154 INFO L78 Accepts]: Start accepts. Automaton has 621 states and 723 transitions. Word has length 152 [2020-09-24 19:26:43,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:43,156 INFO L479 AbstractCegarLoop]: Abstraction has 621 states and 723 transitions. [2020-09-24 19:26:43,156 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:43,156 INFO L276 IsEmpty]: Start isEmpty. Operand 621 states and 723 transitions. [2020-09-24 19:26:43,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 170 [2020-09-24 19:26:43,163 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:43,164 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:43,164 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 19:26:43,164 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:43,165 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:43,165 INFO L82 PathProgramCache]: Analyzing trace with hash 94575458, now seen corresponding path program 1 times [2020-09-24 19:26:43,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:43,166 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [347503923] [2020-09-24 19:26:43,166 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:43,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:43,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:43,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,251 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 180 [2020-09-24 19:26:44,251 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:26:44,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1025 [2020-09-24 19:26:44,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,252 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:26:44,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-24 19:26:44,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:44,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:44,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:44,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:44,416 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:44,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:44,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:44,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:44,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:44,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:44,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:44,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:44,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:44,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:44,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:44,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:44,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:26:44,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:44,497 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 9 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 19:26:44,497 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [347503923] [2020-09-24 19:26:44,497 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:44,498 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-24 19:26:44,498 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1373953967] [2020-09-24 19:26:44,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 19:26:44,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:44,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 19:26:44,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-24 19:26:44,502 INFO L87 Difference]: Start difference. First operand 621 states and 723 transitions. Second operand 5 states. [2020-09-24 19:26:46,034 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:46,035 INFO L93 Difference]: Finished difference Result 1533 states and 1847 transitions. [2020-09-24 19:26:46,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 19:26:46,036 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 169 [2020-09-24 19:26:46,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:46,043 INFO L225 Difference]: With dead ends: 1533 [2020-09-24 19:26:46,043 INFO L226 Difference]: Without dead ends: 934 [2020-09-24 19:26:46,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-24 19:26:46,048 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 934 states. [2020-09-24 19:26:46,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 934 to 924. [2020-09-24 19:26:46,086 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 924 states. [2020-09-24 19:26:46,091 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 924 states to 924 states and 1105 transitions. [2020-09-24 19:26:46,092 INFO L78 Accepts]: Start accepts. Automaton has 924 states and 1105 transitions. Word has length 169 [2020-09-24 19:26:46,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:46,092 INFO L479 AbstractCegarLoop]: Abstraction has 924 states and 1105 transitions. [2020-09-24 19:26:46,093 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 19:26:46,093 INFO L276 IsEmpty]: Start isEmpty. Operand 924 states and 1105 transitions. [2020-09-24 19:26:46,097 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 204 [2020-09-24 19:26:46,097 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:46,098 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:46,098 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 19:26:46,098 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:46,099 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:46,099 INFO L82 PathProgramCache]: Analyzing trace with hash -1505659171, now seen corresponding path program 1 times [2020-09-24 19:26:46,099 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:46,100 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873552158] [2020-09-24 19:26:46,100 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:46,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:46,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:46,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:47,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 216 [2020-09-24 19:26:47,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:47,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-24 19:26:47,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:47,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:47,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:26:47,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-24 19:26:47,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:47,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:47,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:47,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:47,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 19:26:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:47,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:47,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:47,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:47,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:47,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:47,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:47,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:47,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:26:47,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:47,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:26:47,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:47,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:26:47,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:47,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:47,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:47,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:26:47,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:47,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-09-24 19:26:47,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:47,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 19:26:47,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:47,458 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 45 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:47,459 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873552158] [2020-09-24 19:26:47,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:47,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:47,460 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456096661] [2020-09-24 19:26:47,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:47,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:47,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:47,461 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=26, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:47,462 INFO L87 Difference]: Start difference. First operand 924 states and 1105 transitions. Second operand 7 states. [2020-09-24 19:26:49,773 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:49,773 INFO L93 Difference]: Finished difference Result 2391 states and 2955 transitions. [2020-09-24 19:26:49,774 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 19:26:49,774 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 203 [2020-09-24 19:26:49,774 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:49,787 INFO L225 Difference]: With dead ends: 2391 [2020-09-24 19:26:49,787 INFO L226 Difference]: Without dead ends: 1489 [2020-09-24 19:26:49,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2020-09-24 19:26:49,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1489 states. [2020-09-24 19:26:49,851 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1489 to 1241. [2020-09-24 19:26:49,851 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1241 states. [2020-09-24 19:26:49,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1241 states to 1241 states and 1551 transitions. [2020-09-24 19:26:49,858 INFO L78 Accepts]: Start accepts. Automaton has 1241 states and 1551 transitions. Word has length 203 [2020-09-24 19:26:49,859 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:49,863 INFO L479 AbstractCegarLoop]: Abstraction has 1241 states and 1551 transitions. [2020-09-24 19:26:49,864 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:49,864 INFO L276 IsEmpty]: Start isEmpty. Operand 1241 states and 1551 transitions. [2020-09-24 19:26:49,871 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 210 [2020-09-24 19:26:49,871 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:49,871 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, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:49,872 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 19:26:49,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:49,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:49,873 INFO L82 PathProgramCache]: Analyzing trace with hash -1346453927, now seen corresponding path program 1 times [2020-09-24 19:26:49,873 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:49,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749348250] [2020-09-24 19:26:49,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:49,912 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:49,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:50,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:50,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 222 [2020-09-24 19:26:50,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:50,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-24 19:26:50,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:50,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 40 [2020-09-24 19:26:50,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:26:50,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:51,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:51,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:51,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:51,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:51,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:51,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:51,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:51,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:51,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:51,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:51,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:51,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:51,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:51,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:51,069 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:51,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:51,070 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:51,070 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:26:51,070 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:51,070 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:51,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 4 [2020-09-24 19:26:51,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:51,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:26:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:51,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:51,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:51,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-24 19:26:51,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:51,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-24 19:26:51,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:51,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 19:26:51,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:51,395 INFO L134 CoverageAnalysis]: Checked inductivity of 56 backedges. 53 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 19:26:51,396 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749348250] [2020-09-24 19:26:51,396 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:51,396 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:51,397 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1414096309] [2020-09-24 19:26:51,397 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:51,398 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:51,398 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:51,399 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:51,399 INFO L87 Difference]: Start difference. First operand 1241 states and 1551 transitions. Second operand 7 states. [2020-09-24 19:26:53,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:53,763 INFO L93 Difference]: Finished difference Result 3309 states and 4436 transitions. [2020-09-24 19:26:53,763 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:26:53,763 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 209 [2020-09-24 19:26:53,764 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:53,776 INFO L225 Difference]: With dead ends: 3309 [2020-09-24 19:26:53,776 INFO L226 Difference]: Without dead ends: 2090 [2020-09-24 19:26:53,783 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:53,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2090 states. [2020-09-24 19:26:53,844 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2090 to 2018. [2020-09-24 19:26:53,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2018 states. [2020-09-24 19:26:53,856 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2018 states to 2018 states and 2566 transitions. [2020-09-24 19:26:53,857 INFO L78 Accepts]: Start accepts. Automaton has 2018 states and 2566 transitions. Word has length 209 [2020-09-24 19:26:53,857 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:53,857 INFO L479 AbstractCegarLoop]: Abstraction has 2018 states and 2566 transitions. [2020-09-24 19:26:53,858 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:53,858 INFO L276 IsEmpty]: Start isEmpty. Operand 2018 states and 2566 transitions. [2020-09-24 19:26:53,866 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 235 [2020-09-24 19:26:53,867 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:53,867 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:53,867 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 19:26:53,868 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:53,868 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:53,868 INFO L82 PathProgramCache]: Analyzing trace with hash 101728031, now seen corresponding path program 1 times [2020-09-24 19:26:53,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:53,869 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [308108361] [2020-09-24 19:26:53,869 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:53,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:53,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:54,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:54,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 249 [2020-09-24 19:26:54,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:54,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-24 19:26:54,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 81 [2020-09-24 19:26:54,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:26:54,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:54,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:54,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:55,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:26:55,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:55,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:55,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:55,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:55,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:26:55,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 19:26:55,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:55,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:55,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:55,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 19:26:55,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-09-24 19:26:55,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 19:26:55,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:55,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:26:55,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:55,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 84 [2020-09-24 19:26:55,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:55,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:55,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:55,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:55,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:55,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 19:26:55,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:55,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:55,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:26:55,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:55,289 INFO L134 CoverageAnalysis]: Checked inductivity of 112 backedges. 94 proven. 2 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-24 19:26:55,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [308108361] [2020-09-24 19:26:55,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:55,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:55,291 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1700375776] [2020-09-24 19:26:55,292 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:55,292 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:55,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:55,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:55,293 INFO L87 Difference]: Start difference. First operand 2018 states and 2566 transitions. Second operand 7 states. [2020-09-24 19:26:57,840 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:26:57,841 INFO L93 Difference]: Finished difference Result 4987 states and 6655 transitions. [2020-09-24 19:26:57,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:26:57,842 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 234 [2020-09-24 19:26:57,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:26:57,861 INFO L225 Difference]: With dead ends: 4987 [2020-09-24 19:26:57,861 INFO L226 Difference]: Without dead ends: 2991 [2020-09-24 19:26:57,871 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:26:57,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2991 states. [2020-09-24 19:26:57,958 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2991 to 2802. [2020-09-24 19:26:57,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2802 states. [2020-09-24 19:26:57,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2802 states to 2802 states and 3511 transitions. [2020-09-24 19:26:57,973 INFO L78 Accepts]: Start accepts. Automaton has 2802 states and 3511 transitions. Word has length 234 [2020-09-24 19:26:57,973 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:26:57,973 INFO L479 AbstractCegarLoop]: Abstraction has 2802 states and 3511 transitions. [2020-09-24 19:26:57,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:26:57,974 INFO L276 IsEmpty]: Start isEmpty. Operand 2802 states and 3511 transitions. [2020-09-24 19:26:57,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 242 [2020-09-24 19:26:57,987 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:26:57,988 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:26:57,988 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 19:26:57,988 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:26:57,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:26:57,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1548086819, now seen corresponding path program 1 times [2020-09-24 19:26:57,989 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:26:57,989 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [345015780] [2020-09-24 19:26:57,989 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:26:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:58,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:58,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 256 [2020-09-24 19:26:59,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:26:59,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-24 19:26:59,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 41 [2020-09-24 19:26:59,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 19:26:59,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,110 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:26:59,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,140 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:26:59,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-24 19:26:59,141 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:59,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:59,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:26:59,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-24 19:26:59,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 19:26:59,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:26:59,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:26:59,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-24 19:26:59,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:26:59,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 19:26:59,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:26:59,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-09-24 19:26:59,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:26:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:26:59,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:26:59,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:59,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 91 [2020-09-24 19:26:59,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:26:59,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:26:59,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:26:59,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:26:59,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:26:59,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 19:26:59,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:26:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:26:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:26:59,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:26:59,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:26:59,476 INFO L134 CoverageAnalysis]: Checked inductivity of 113 backedges. 84 proven. 14 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 19:26:59,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [345015780] [2020-09-24 19:26:59,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:26:59,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:26:59,479 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96469272] [2020-09-24 19:26:59,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:26:59,480 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:26:59,480 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:26:59,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:26:59,480 INFO L87 Difference]: Start difference. First operand 2802 states and 3511 transitions. Second operand 7 states. [2020-09-24 19:27:01,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:01,654 INFO L93 Difference]: Finished difference Result 6225 states and 7788 transitions. [2020-09-24 19:27:01,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:27:01,659 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 241 [2020-09-24 19:27:01,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:01,674 INFO L225 Difference]: With dead ends: 6225 [2020-09-24 19:27:01,674 INFO L226 Difference]: Without dead ends: 2910 [2020-09-24 19:27:01,685 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:27:01,690 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2910 states. [2020-09-24 19:27:01,750 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2910 to 2741. [2020-09-24 19:27:01,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2741 states. [2020-09-24 19:27:01,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2741 states to 2741 states and 3180 transitions. [2020-09-24 19:27:01,757 INFO L78 Accepts]: Start accepts. Automaton has 2741 states and 3180 transitions. Word has length 241 [2020-09-24 19:27:01,757 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:01,757 INFO L479 AbstractCegarLoop]: Abstraction has 2741 states and 3180 transitions. [2020-09-24 19:27:01,757 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:01,758 INFO L276 IsEmpty]: Start isEmpty. Operand 2741 states and 3180 transitions. [2020-09-24 19:27:01,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 247 [2020-09-24 19:27:01,770 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:01,770 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:27:01,771 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 19:27:01,771 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:01,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:01,771 INFO L82 PathProgramCache]: Analyzing trace with hash 1964108806, now seen corresponding path program 1 times [2020-09-24 19:27:01,772 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:01,772 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1469125115] [2020-09-24 19:27:01,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:01,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:01,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:02,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 261 [2020-09-24 19:27:02,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:27:02,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-24 19:27:02,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 46 [2020-09-24 19:27:02,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 19:27:02,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 19:27:02,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:02,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:02,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:02,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:02,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:02,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 19:27:02,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:02,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:02,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:02,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:02,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:27:02,944 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:02,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:02,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:02,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 19:27:02,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:02,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 19:27:02,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:27:02,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:02,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-24 19:27:02,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:02,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-24 19:27:02,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:03,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-09-24 19:27:03,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:03,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 19:27:03,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:03,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-24 19:27:03,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:03,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 96 [2020-09-24 19:27:03,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:03,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:03,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:27:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 19:27:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:27:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:03,336 INFO L134 CoverageAnalysis]: Checked inductivity of 125 backedges. 92 proven. 14 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-24 19:27:03,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1469125115] [2020-09-24 19:27:03,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:03,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:27:03,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [148646718] [2020-09-24 19:27:03,339 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:27:03,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:03,340 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:27:03,340 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:27:03,340 INFO L87 Difference]: Start difference. First operand 2741 states and 3180 transitions. Second operand 7 states. [2020-09-24 19:27:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:05,633 INFO L93 Difference]: Finished difference Result 5861 states and 6795 transitions. [2020-09-24 19:27:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 19:27:05,634 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 246 [2020-09-24 19:27:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:05,648 INFO L225 Difference]: With dead ends: 5861 [2020-09-24 19:27:05,649 INFO L226 Difference]: Without dead ends: 2963 [2020-09-24 19:27:05,658 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:27:05,662 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2963 states. [2020-09-24 19:27:05,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2963 to 2876. [2020-09-24 19:27:05,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2876 states. [2020-09-24 19:27:05,731 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2876 states to 2876 states and 3215 transitions. [2020-09-24 19:27:05,732 INFO L78 Accepts]: Start accepts. Automaton has 2876 states and 3215 transitions. Word has length 246 [2020-09-24 19:27:05,732 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:05,732 INFO L479 AbstractCegarLoop]: Abstraction has 2876 states and 3215 transitions. [2020-09-24 19:27:05,732 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:05,732 INFO L276 IsEmpty]: Start isEmpty. Operand 2876 states and 3215 transitions. [2020-09-24 19:27:05,744 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 280 [2020-09-24 19:27:05,745 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:05,745 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 19:27:05,745 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 19:27:05,746 INFO L427 AbstractCegarLoop]: === Iteration 8 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:05,746 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:05,746 INFO L82 PathProgramCache]: Analyzing trace with hash 2053109712, now seen corresponding path program 1 times [2020-09-24 19:27:05,746 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:05,747 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [731156348] [2020-09-24 19:27:05,747 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:05,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:06,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:06,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:06,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:06,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 292 [2020-09-24 19:27:06,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:27:06,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1037 [2020-09-24 19:27:06,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:06,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 19:27:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 148 [2020-09-24 19:27:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 19:27:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:07,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:07,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:07,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:07,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:07,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:07,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:07,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 19:27:07,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:07,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:07,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:07,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 19:27:07,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:27:07,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:27:07,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:07,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 19:27:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:07,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:27:07,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:07,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:07,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-24 19:27:07,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:07,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-24 19:27:07,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:07,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 19:27:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:07,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 19:27:07,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:07,985 INFO L134 CoverageAnalysis]: Checked inductivity of 148 backedges. 111 proven. 2 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 19:27:07,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [731156348] [2020-09-24 19:27:07,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:07,987 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 19:27:07,987 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1550696731] [2020-09-24 19:27:07,988 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 19:27:07,988 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:07,989 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 19:27:07,989 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 19:27:07,989 INFO L87 Difference]: Start difference. First operand 2876 states and 3215 transitions. Second operand 11 states. [2020-09-24 19:27:11,540 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:11,541 INFO L93 Difference]: Finished difference Result 6728 states and 7622 transitions. [2020-09-24 19:27:11,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 19:27:11,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 279 [2020-09-24 19:27:11,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:11,554 INFO L225 Difference]: With dead ends: 6728 [2020-09-24 19:27:11,554 INFO L226 Difference]: Without dead ends: 2470 [2020-09-24 19:27:11,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=85, Invalid=155, Unknown=0, NotChecked=0, Total=240 [2020-09-24 19:27:11,569 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2470 states. [2020-09-24 19:27:11,626 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2470 to 2454. [2020-09-24 19:27:11,626 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2454 states. [2020-09-24 19:27:11,632 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2454 states to 2454 states and 2646 transitions. [2020-09-24 19:27:11,633 INFO L78 Accepts]: Start accepts. Automaton has 2454 states and 2646 transitions. Word has length 279 [2020-09-24 19:27:11,633 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:11,633 INFO L479 AbstractCegarLoop]: Abstraction has 2454 states and 2646 transitions. [2020-09-24 19:27:11,634 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 19:27:11,634 INFO L276 IsEmpty]: Start isEmpty. Operand 2454 states and 2646 transitions. [2020-09-24 19:27:11,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 328 [2020-09-24 19:27:11,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:11,644 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 19:27:11,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 19:27:11,644 INFO L427 AbstractCegarLoop]: === Iteration 9 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:11,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:11,645 INFO L82 PathProgramCache]: Analyzing trace with hash -825882109, now seen corresponding path program 1 times [2020-09-24 19:27:11,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:11,646 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197289271] [2020-09-24 19:27:11,646 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:11,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:11,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:11,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:11,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,695 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 344 [2020-09-24 19:27:12,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 19:27:12,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1010 [2020-09-24 19:27:12,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-24 19:27:12,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-24 19:27:12,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:12,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:12,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:12,861 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:12,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:27:12,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:12,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:12,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:27:12,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:12,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:12,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-24 19:27:12,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:12,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-24 19:27:12,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:27:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:12,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 19:27:12,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:12,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 71 [2020-09-24 19:27:12,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:12,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:13,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:13,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:27:13,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:13,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 19:27:13,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:13,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:13,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-09-24 19:27:13,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:13,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 116 [2020-09-24 19:27:13,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:13,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:13,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:27:13,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:13,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-09-24 19:27:13,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:13,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 54 [2020-09-24 19:27:13,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:13,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:13,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 177 [2020-09-24 19:27:13,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:13,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:13,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:13,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:27:13,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:13,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 19:27:13,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:13,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:13,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 19:27:13,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:13,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:13,328 INFO L134 CoverageAnalysis]: Checked inductivity of 323 backedges. 195 proven. 47 refuted. 0 times theorem prover too weak. 81 trivial. 0 not checked. [2020-09-24 19:27:13,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [197289271] [2020-09-24 19:27:13,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:13,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:27:13,340 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1539371587] [2020-09-24 19:27:13,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:27:13,341 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:13,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:27:13,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:27:13,342 INFO L87 Difference]: Start difference. First operand 2454 states and 2646 transitions. Second operand 7 states. [2020-09-24 19:27:15,026 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:15,027 INFO L93 Difference]: Finished difference Result 4894 states and 5274 transitions. [2020-09-24 19:27:15,028 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 19:27:15,028 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 327 [2020-09-24 19:27:15,029 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:15,039 INFO L225 Difference]: With dead ends: 4894 [2020-09-24 19:27:15,040 INFO L226 Difference]: Without dead ends: 2295 [2020-09-24 19:27:15,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-24 19:27:15,049 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2295 states. [2020-09-24 19:27:15,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2295 to 2276. [2020-09-24 19:27:15,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2276 states. [2020-09-24 19:27:15,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2276 states to 2276 states and 2379 transitions. [2020-09-24 19:27:15,097 INFO L78 Accepts]: Start accepts. Automaton has 2276 states and 2379 transitions. Word has length 327 [2020-09-24 19:27:15,098 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:15,098 INFO L479 AbstractCegarLoop]: Abstraction has 2276 states and 2379 transitions. [2020-09-24 19:27:15,098 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:15,098 INFO L276 IsEmpty]: Start isEmpty. Operand 2276 states and 2379 transitions. [2020-09-24 19:27:15,113 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 351 [2020-09-24 19:27:15,113 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 19:27:15,113 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-24 19:27:15,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 19:27:15,118 INFO L427 AbstractCegarLoop]: === Iteration 10 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 19:27:15,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 19:27:15,119 INFO L82 PathProgramCache]: Analyzing trace with hash -1232859503, now seen corresponding path program 1 times [2020-09-24 19:27:15,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 19:27:15,119 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1282796223] [2020-09-24 19:27:15,119 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 19:27:15,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:15,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:15,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:16,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:16,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 367 [2020-09-24 19:27:16,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 19:27:16,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1008 [2020-09-24 19:27:16,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 199 [2020-09-24 19:27:16,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-24 19:27:16,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:16,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 19:27:16,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:16,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:16,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:16,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 19:27:16,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:16,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 19:27:16,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:16,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:16,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:16,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:16,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 19:27:16,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:16,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:16,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:16,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-09-24 19:27:16,348 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:16,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 19:27:16,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:16,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:16,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:16,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 94 [2020-09-24 19:27:16,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:16,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:16,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-24 19:27:16,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 19:27:16,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 19:27:16,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:16,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 19:27:16,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 19:27:16,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-09-24 19:27:16,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:16,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:16,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:16,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-24 19:27:16,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:16,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 19:27:16,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:16,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 19:27:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 19:27:16,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-24 19:27:16,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:16,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 200 [2020-09-24 19:27:16,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 19:27:16,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 19:27:16,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-24 19:27:16,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-24 19:27:16,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 19:27:16,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 19:27:16,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 19:27:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 19:27:16,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 19:27:16,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 19:27:16,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 19:27:16,772 INFO L134 CoverageAnalysis]: Checked inductivity of 363 backedges. 229 proven. 2 refuted. 0 times theorem prover too weak. 132 trivial. 0 not checked. [2020-09-24 19:27:16,773 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1282796223] [2020-09-24 19:27:16,773 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 19:27:16,773 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 19:27:16,774 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [615914592] [2020-09-24 19:27:16,774 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 19:27:16,775 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 19:27:16,775 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 19:27:16,775 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 19:27:16,775 INFO L87 Difference]: Start difference. First operand 2276 states and 2379 transitions. Second operand 7 states. [2020-09-24 19:27:18,120 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 19:27:18,120 INFO L93 Difference]: Finished difference Result 3867 states and 4048 transitions. [2020-09-24 19:27:18,121 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 19:27:18,121 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 350 [2020-09-24 19:27:18,122 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 19:27:18,122 INFO L225 Difference]: With dead ends: 3867 [2020-09-24 19:27:18,122 INFO L226 Difference]: Without dead ends: 0 [2020-09-24 19:27:18,130 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 19:27:18,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-09-24 19:27:18,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-09-24 19:27:18,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-09-24 19:27:18,131 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-09-24 19:27:18,131 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 350 [2020-09-24 19:27:18,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 19:27:18,131 INFO L479 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-09-24 19:27:18,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 19:27:18,132 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-09-24 19:27:18,132 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-09-24 19:27:18,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 19:27:18,135 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-09-24 19:27:19,651 WARN L193 SmtUtils]: Spent 561.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2020-09-24 19:27:20,161 WARN L193 SmtUtils]: Spent 506.00 ms on a formula simplification. DAG size of input: 159 DAG size of output: 134 [2020-09-24 19:27:21,756 WARN L193 SmtUtils]: Spent 1.49 s on a formula simplification. DAG size of input: 139 DAG size of output: 75 [2020-09-24 19:27:22,529 WARN L193 SmtUtils]: Spent 725.00 ms on a formula simplification. DAG size of input: 124 DAG size of output: 48