/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=LOWLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 21:45:41,650 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 21:45:41,653 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 21:45:41,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 21:45:41,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 21:45:41,709 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 21:45:41,711 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 21:45:41,714 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 21:45:41,717 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 21:45:41,721 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 21:45:41,722 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 21:45:41,725 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 21:45:41,725 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 21:45:41,728 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 21:45:41,731 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 21:45:41,733 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 21:45:41,734 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 21:45:41,736 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 21:45:41,738 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 21:45:41,745 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 21:45:41,748 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 21:45:41,749 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 21:45:41,750 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 21:45:41,751 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 21:45:41,755 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 21:45:41,756 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 21:45:41,756 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 21:45:41,759 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 21:45:41,760 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 21:45:41,761 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 21:45:41,761 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 21:45:41,762 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 21:45:41,763 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 21:45:41,764 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 21:45:41,766 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 21:45:41,766 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 21:45:41,767 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 21:45:41,767 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 21:45:41,767 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 21:45:41,769 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 21:45:41,770 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 21:45:41,771 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 21:45:41,827 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 21:45:41,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 21:45:41,830 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 21:45:41,830 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 21:45:41,830 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 21:45:41,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 21:45:41,831 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 21:45:41,831 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 21:45:41,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 21:45:41,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 21:45:41,832 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 21:45:41,833 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 21:45:41,833 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 21:45:41,833 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 21:45:41,834 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 21:45:41,834 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 21:45:41,834 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 21:45:41,834 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 21:45:41,834 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 21:45:41,835 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 21:45:41,835 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 21:45:41,835 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 21:45:41,835 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 21:45:41,835 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 21:45:41,836 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 21:45:41,836 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 21:45:41,836 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 21:45:41,836 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 21:45:41,836 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 21:45:41,837 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=LOWLEXORDER;log-additional-information=true; [2020-09-24 21:45:42,336 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 21:45:42,355 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 21:45:42,360 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 21:45:42,361 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 21:45:42,362 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 21:45:42,363 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-24 21:45:42,458 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b05daceb2/90e4ead20b2642b3ae89ab64069bec95/FLAG3c59f7337 [2020-09-24 21:45:43,151 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 21:45:43,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label43.c [2020-09-24 21:45:43,167 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b05daceb2/90e4ead20b2642b3ae89ab64069bec95/FLAG3c59f7337 [2020-09-24 21:45:43,404 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b05daceb2/90e4ead20b2642b3ae89ab64069bec95 [2020-09-24 21:45:43,419 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 21:45:43,424 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 21:45:43,427 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:43,428 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 21:45:43,432 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 21:45:43,433 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:43" (1/1) ... [2020-09-24 21:45:43,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@3116520e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:43, skipping insertion in model container [2020-09-24 21:45:43,438 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 09:45:43" (1/1) ... [2020-09-24 21:45:43,448 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 21:45:43,512 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 21:45:44,071 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:44,077 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 21:45:44,224 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 21:45:44,257 INFO L208 MainTranslator]: Completed translation [2020-09-24 21:45:44,259 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44 WrapperNode [2020-09-24 21:45:44,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 21:45:44,260 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 21:45:44,260 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 21:45:44,260 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 21:45:44,280 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,282 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,318 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,319 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,383 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,403 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,410 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (1/1) ... [2020-09-24 21:45:44,420 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 21:45:44,421 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 21:45:44,421 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 21:45:44,421 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 21:45:44,422 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (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 21:45:44,543 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 21:45:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 21:45:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-24 21:45:44,544 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 21:45:44,544 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-24 21:45:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 21:45:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 21:45:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-24 21:45:44,545 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 21:45:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 21:45:44,546 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 21:45:46,364 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 21:45:46,364 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-24 21:45:46,381 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:46 BoogieIcfgContainer [2020-09-24 21:45:46,381 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 21:45:46,384 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 21:45:46,384 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 21:45:46,388 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 21:45:46,389 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 09:45:43" (1/3) ... [2020-09-24 21:45:46,390 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47579d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:46, skipping insertion in model container [2020-09-24 21:45:46,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 09:45:44" (2/3) ... [2020-09-24 21:45:46,391 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@47579d81 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 09:45:46, skipping insertion in model container [2020-09-24 21:45:46,391 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 09:45:46" (3/3) ... [2020-09-24 21:45:46,395 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label43.c [2020-09-24 21:45:46,408 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 21:45:46,423 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 21:45:46,447 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 21:45:46,479 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 21:45:46,480 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 21:45:46,480 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 21:45:46,480 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 21:45:46,480 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 21:45:46,480 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 21:45:46,480 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 21:45:46,481 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 21:45:46,511 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-24 21:45:46,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-24 21:45:46,522 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:46,523 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] [2020-09-24 21:45:46,524 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:46,531 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:46,532 INFO L82 PathProgramCache]: Analyzing trace with hash -495691305, now seen corresponding path program 1 times [2020-09-24 21:45:46,541 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:46,541 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1273821715] [2020-09-24 21:45:46,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:46,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:46,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:47,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-24 21:45:47,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 21:45:47,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 757 [2020-09-24 21:45:47,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:45:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:47,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 21:45:47,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 21:45:47,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:47,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:47,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:47,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:47,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:47,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:47,670 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 21:45:47,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:47,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:45:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:47,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:45:47,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:47,697 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 21:45:47,700 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1273821715] [2020-09-24 21:45:47,702 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 21:45:47,703 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-24 21:45:47,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1245386979] [2020-09-24 21:45:47,712 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-24 21:45:47,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:47,731 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-24 21:45:47,733 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-24 21:45:47,735 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-24 21:45:50,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:50,089 INFO L93 Difference]: Finished difference Result 1163 states and 1589 transitions. [2020-09-24 21:45:50,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 21:45:50,093 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-09-24 21:45:50,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:50,118 INFO L225 Difference]: With dead ends: 1163 [2020-09-24 21:45:50,119 INFO L226 Difference]: Without dead ends: 634 [2020-09-24 21:45:50,133 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-24 21:45:50,157 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 634 states. [2020-09-24 21:45:50,232 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 634 to 580. [2020-09-24 21:45:50,233 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 580 states. [2020-09-24 21:45:50,237 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 580 states to 580 states and 732 transitions. [2020-09-24 21:45:50,242 INFO L78 Accepts]: Start accepts. Automaton has 580 states and 732 transitions. Word has length 54 [2020-09-24 21:45:50,243 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:50,243 INFO L479 AbstractCegarLoop]: Abstraction has 580 states and 732 transitions. [2020-09-24 21:45:50,243 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-24 21:45:50,243 INFO L276 IsEmpty]: Start isEmpty. Operand 580 states and 732 transitions. [2020-09-24 21:45:50,251 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-09-24 21:45:50,251 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:50,252 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 21:45:50,252 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 21:45:50,252 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:50,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:50,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1783140025, now seen corresponding path program 1 times [2020-09-24 21:45:50,253 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:50,254 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [929236153] [2020-09-24 21:45:50,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:50,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:50,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:50,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:55,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 144 [2020-09-24 21:45:55,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 21:45:55,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4704 [2020-09-24 21:45:55,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:45:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:45:55,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-09-24 21:45:55,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:55,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:45:55,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:55,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:55,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:45:55,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:45:55,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-24 21:45:55,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:55,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 21:45:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:45:55,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 21:45:55,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:45:55,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:45:55,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:55,476 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:45:55,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:45:55,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:45:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-24 21:45:55,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:45:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:45:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:45:55,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:45:55,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:45:55,734 INFO L134 CoverageAnalysis]: Checked inductivity of 38 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 21:45:55,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [929236153] [2020-09-24 21:45:55,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:45:55,735 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 21:45:55,735 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1076807738] [2020-09-24 21:45:55,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 21:45:55,738 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:45:55,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 21:45:55,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 21:45:55,739 INFO L87 Difference]: Start difference. First operand 580 states and 732 transitions. Second operand 9 states. [2020-09-24 21:45:58,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:45:58,949 INFO L93 Difference]: Finished difference Result 1667 states and 2228 transitions. [2020-09-24 21:45:58,949 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:45:58,950 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 133 [2020-09-24 21:45:58,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:45:58,960 INFO L225 Difference]: With dead ends: 1667 [2020-09-24 21:45:58,960 INFO L226 Difference]: Without dead ends: 1102 [2020-09-24 21:45:58,963 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=82, Invalid=190, Unknown=0, NotChecked=0, Total=272 [2020-09-24 21:45:58,966 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1102 states. [2020-09-24 21:45:59,020 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1102 to 1038. [2020-09-24 21:45:59,020 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1038 states. [2020-09-24 21:45:59,026 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1038 states to 1038 states and 1370 transitions. [2020-09-24 21:45:59,026 INFO L78 Accepts]: Start accepts. Automaton has 1038 states and 1370 transitions. Word has length 133 [2020-09-24 21:45:59,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:45:59,027 INFO L479 AbstractCegarLoop]: Abstraction has 1038 states and 1370 transitions. [2020-09-24 21:45:59,027 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 21:45:59,028 INFO L276 IsEmpty]: Start isEmpty. Operand 1038 states and 1370 transitions. [2020-09-24 21:45:59,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 217 [2020-09-24 21:45:59,037 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:45:59,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:45:59,038 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 21:45:59,038 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:45:59,039 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:45:59,039 INFO L82 PathProgramCache]: Analyzing trace with hash 2021439648, now seen corresponding path program 1 times [2020-09-24 21:45:59,039 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:45:59,039 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1965973195] [2020-09-24 21:45:59,040 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:45:59,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:45:59,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:45:59,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:00,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:00,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:04,143 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 229 [2020-09-24 21:46:04,143 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 21:46:04,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5020 [2020-09-24 21:46:04,144 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 21:46:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-24 21:46:04,145 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-09-24 21:46:04,145 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:04,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:04,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:04,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:04,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:04,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:04,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:04,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:04,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:04,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 21:46:04,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:04,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:04,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:04,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:04,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:04,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 21:46:04,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 21:46:04,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:04,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:04,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:04,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:04,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:04,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:04,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:04,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:04,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:04,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 133 [2020-09-24 21:46:04,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:04,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:04,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:04,732 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 79 proven. 65 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 21:46:04,733 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1965973195] [2020-09-24 21:46:04,733 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:04,733 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 21:46:04,734 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [251095899] [2020-09-24 21:46:04,734 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 21:46:04,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:04,735 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 21:46:04,735 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 21:46:04,735 INFO L87 Difference]: Start difference. First operand 1038 states and 1370 transitions. Second operand 8 states. [2020-09-24 21:46:07,242 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:07,243 INFO L93 Difference]: Finished difference Result 2421 states and 3651 transitions. [2020-09-24 21:46:07,244 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 21:46:07,244 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 216 [2020-09-24 21:46:07,245 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:07,262 INFO L225 Difference]: With dead ends: 2421 [2020-09-24 21:46:07,263 INFO L226 Difference]: Without dead ends: 1548 [2020-09-24 21:46:07,269 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=64, Invalid=146, Unknown=0, NotChecked=0, Total=210 [2020-09-24 21:46:07,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1548 states. [2020-09-24 21:46:07,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1548 to 1202. [2020-09-24 21:46:07,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1202 states. [2020-09-24 21:46:07,346 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1202 states to 1202 states and 1574 transitions. [2020-09-24 21:46:07,347 INFO L78 Accepts]: Start accepts. Automaton has 1202 states and 1574 transitions. Word has length 216 [2020-09-24 21:46:07,347 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:07,348 INFO L479 AbstractCegarLoop]: Abstraction has 1202 states and 1574 transitions. [2020-09-24 21:46:07,348 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 21:46:07,348 INFO L276 IsEmpty]: Start isEmpty. Operand 1202 states and 1574 transitions. [2020-09-24 21:46:07,353 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 223 [2020-09-24 21:46:07,353 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:07,353 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:07,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 21:46:07,354 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:07,354 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:07,354 INFO L82 PathProgramCache]: Analyzing trace with hash 480632245, now seen corresponding path program 1 times [2020-09-24 21:46:07,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:07,355 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [608371190] [2020-09-24 21:46:07,355 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:07,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:07,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:07,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:08,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:09,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:10,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:12,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 235 [2020-09-24 21:46:12,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 21:46:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 21:46:12,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 21:46:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-24 21:46:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:12,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:12,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:12,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:12,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:12,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 21:46:12,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:12,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:12,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:12,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:12,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:12,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-24 21:46:12,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-24 21:46:12,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 21:46:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:12,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-24 21:46:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-24 21:46:12,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:12,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:12,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:12,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:12,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:12,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-09-24 21:46:12,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:12,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:12,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:12,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:13,060 INFO L134 CoverageAnalysis]: Checked inductivity of 152 backedges. 142 proven. 9 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:13,061 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [608371190] [2020-09-24 21:46:13,061 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:13,062 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 21:46:13,062 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1129946782] [2020-09-24 21:46:13,063 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 21:46:13,063 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:13,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 21:46:13,064 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-24 21:46:13,064 INFO L87 Difference]: Start difference. First operand 1202 states and 1574 transitions. Second operand 10 states. [2020-09-24 21:46:16,598 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:16,599 INFO L93 Difference]: Finished difference Result 2664 states and 3616 transitions. [2020-09-24 21:46:16,599 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-24 21:46:16,599 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 222 [2020-09-24 21:46:16,600 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:16,612 INFO L225 Difference]: With dead ends: 2664 [2020-09-24 21:46:16,612 INFO L226 Difference]: Without dead ends: 1627 [2020-09-24 21:46:16,620 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 39 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=86, Invalid=220, Unknown=0, NotChecked=0, Total=306 [2020-09-24 21:46:16,624 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1627 states. [2020-09-24 21:46:16,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1627 to 1584. [2020-09-24 21:46:16,693 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1584 states. [2020-09-24 21:46:16,704 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1584 states to 1584 states and 2044 transitions. [2020-09-24 21:46:16,704 INFO L78 Accepts]: Start accepts. Automaton has 1584 states and 2044 transitions. Word has length 222 [2020-09-24 21:46:16,705 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:16,705 INFO L479 AbstractCegarLoop]: Abstraction has 1584 states and 2044 transitions. [2020-09-24 21:46:16,705 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 21:46:16,706 INFO L276 IsEmpty]: Start isEmpty. Operand 1584 states and 2044 transitions. [2020-09-24 21:46:16,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 227 [2020-09-24 21:46:16,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:16,715 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 21:46:16,715 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 21:46:16,715 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:16,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:16,716 INFO L82 PathProgramCache]: Analyzing trace with hash 1311681026, now seen corresponding path program 1 times [2020-09-24 21:46:16,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:16,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [419079398] [2020-09-24 21:46:16,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:16,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:16,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:16,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:17,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:18,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:21,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 239 [2020-09-24 21:46:21,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 21:46:21,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 21:46:21,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 21:46:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 21:46:21,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 178 [2020-09-24 21:46:21,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:21,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 21:46:21,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:21,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:21,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:21,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-24 21:46:21,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:21,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 21:46:21,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:21,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 21:46:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 21:46:21,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 21:46:21,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:21,942 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-24 21:46:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:21,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:22,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-24 21:46:22,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:22,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 156 [2020-09-24 21:46:22,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 21:46:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:22,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-24 21:46:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 21:46:22,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-24 21:46:22,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:22,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:22,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 21:46:22,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 79 [2020-09-24 21:46:22,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 21:46:22,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 21:46:22,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: LOWLEXORDER [2020-09-24 21:46:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 21:46:22,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-24 21:46:22,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-24 21:46:22,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 21:46:22,573 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 86 proven. 68 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 21:46:22,574 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [419079398] [2020-09-24 21:46:22,574 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 21:46:22,574 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 21:46:22,574 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [632119452] [2020-09-24 21:46:22,575 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 21:46:22,575 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 21:46:22,576 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 21:46:22,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-09-24 21:46:22,576 INFO L87 Difference]: Start difference. First operand 1584 states and 2044 transitions. Second operand 11 states. [2020-09-24 21:46:27,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 21:46:27,076 INFO L93 Difference]: Finished difference Result 3466 states and 4770 transitions. [2020-09-24 21:46:27,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-09-24 21:46:27,077 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 226 [2020-09-24 21:46:27,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 21:46:27,091 INFO L225 Difference]: With dead ends: 3466 [2020-09-24 21:46:27,091 INFO L226 Difference]: Without dead ends: 2052 [2020-09-24 21:46:27,100 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 187 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=170, Invalid=642, Unknown=0, NotChecked=0, Total=812 [2020-09-24 21:46:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2052 states. [2020-09-24 21:46:27,169 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2052 to 1916. [2020-09-24 21:46:27,169 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1916 states. [2020-09-24 21:46:27,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1916 states to 1916 states and 2417 transitions. [2020-09-24 21:46:27,178 INFO L78 Accepts]: Start accepts. Automaton has 1916 states and 2417 transitions. Word has length 226 [2020-09-24 21:46:27,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 21:46:27,179 INFO L479 AbstractCegarLoop]: Abstraction has 1916 states and 2417 transitions. [2020-09-24 21:46:27,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 21:46:27,179 INFO L276 IsEmpty]: Start isEmpty. Operand 1916 states and 2417 transitions. [2020-09-24 21:46:27,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 295 [2020-09-24 21:46:27,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 21:46:27,187 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-09-24 21:46:27,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 21:46:27,187 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 21:46:27,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 21:46:27,188 INFO L82 PathProgramCache]: Analyzing trace with hash -372076015, now seen corresponding path program 1 times [2020-09-24 21:46:27,188 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 21:46:27,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935540939] [2020-09-24 21:46:27,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 21:46:27,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 21:46:27,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 21:46:27,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking...