/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:25:55,280 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:25:55,284 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:25:55,328 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:25:55,328 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:25:55,336 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:25:55,338 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:25:55,341 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:25:55,343 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:25:55,347 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:25:55,348 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:25:55,349 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:25:55,349 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:25:55,353 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:25:55,356 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:25:55,357 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:25:55,359 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:25:55,360 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:25:55,361 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:25:55,370 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:25:55,373 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:25:55,374 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:25:55,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:25:55,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:25:55,387 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:25:55,387 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:25:55,387 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:25:55,388 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:25:55,391 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:25:55,392 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:25:55,392 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:25:55,393 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:25:55,394 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:25:55,395 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:25:55,396 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:25:55,396 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:25:55,397 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:25:55,397 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:25:55,397 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:25:55,398 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:25:55,400 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:25:55,401 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:25:55,449 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:25:55,449 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:25:55,451 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:25:55,451 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:25:55,451 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:25:55,451 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:25:55,452 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:25:55,452 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:25:55,452 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:25:55,452 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:25:55,453 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:25:55,454 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:25:55,454 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:25:55,454 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:25:55,454 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:25:55,455 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:25:55,455 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:25:55,455 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:25:55,455 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:25:55,456 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:25:55,456 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:25:55,456 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:55,457 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:25:55,457 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:25:55,457 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:25:55,457 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:25:55,458 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:25:55,458 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:25:55,458 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:25:55,458 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:25:55,899 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:25:55,924 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:25:55,932 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:25:55,934 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:25:55,934 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:25:55,935 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 12:25:56,015 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fa6a45e5/e64012bc89674aa787d8a435e4426ffb/FLAG1458dc334 [2020-09-25 12:25:56,678 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:25:56,679 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label05.c [2020-09-25 12:25:56,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fa6a45e5/e64012bc89674aa787d8a435e4426ffb/FLAG1458dc334 [2020-09-25 12:25:56,876 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/0fa6a45e5/e64012bc89674aa787d8a435e4426ffb [2020-09-25 12:25:56,889 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:25:56,896 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:25:56,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:56,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:25:56,902 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:25:56,903 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:56" (1/1) ... [2020-09-25 12:25:56,908 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bc1b413 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:56, skipping insertion in model container [2020-09-25 12:25:56,908 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:25:56" (1/1) ... [2020-09-25 12:25:56,918 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:25:56,977 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:25:57,554 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:57,560 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:25:57,671 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:25:57,699 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:25:57,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57 WrapperNode [2020-09-25 12:25:57,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:25:57,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:25:57,701 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:25:57,701 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:25:57,724 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... [2020-09-25 12:25:57,724 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... [2020-09-25 12:25:57,744 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... [2020-09-25 12:25:57,745 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... [2020-09-25 12:25:57,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... [2020-09-25 12:25:57,802 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... [2020-09-25 12:25:57,807 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... [2020-09-25 12:25:57,815 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:25:57,816 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:25:57,816 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:25:57,817 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:25:57,818 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:25:57,915 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:25:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:25:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:25:57,916 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:25:57,916 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:25:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:25:57,917 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:25:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:25:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:25:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:25:57,918 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:25:59,500 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:25:59,501 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:25:59,510 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:59 BoogieIcfgContainer [2020-09-25 12:25:59,511 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:25:59,512 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:25:59,512 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:25:59,516 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:25:59,517 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:25:56" (1/3) ... [2020-09-25 12:25:59,518 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:59, skipping insertion in model container [2020-09-25 12:25:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:25:57" (2/3) ... [2020-09-25 12:25:59,519 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@33ed7552 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:25:59, skipping insertion in model container [2020-09-25 12:25:59,519 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:25:59" (3/3) ... [2020-09-25 12:25:59,522 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label05.c [2020-09-25 12:25:59,537 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:25:59,550 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:25:59,576 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:25:59,615 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:25:59,616 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:25:59,616 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:25:59,616 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:25:59,616 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:25:59,616 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:25:59,617 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:25:59,617 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:25:59,659 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:25:59,676 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:25:59,676 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:25:59,678 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] [2020-09-25 12:25:59,678 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:25:59,684 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:25:59,684 INFO L82 PathProgramCache]: Analyzing trace with hash -1858369017, now seen corresponding path program 1 times [2020-09-25 12:25:59,693 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:25:59,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1872194903] [2020-09-25 12:25:59,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:25:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:25:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-09-25 12:26:00,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:00,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-09-25 12:26:00,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,583 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:00,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 12:26:00,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:26:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:00,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:00,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:00,807 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:00,807 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:00,807 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:00,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:26:00,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:00,808 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:00,808 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:00,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:00,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:00,836 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:00,837 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1872194903] [2020-09-25 12:26:00,840 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:00,840 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:00,841 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1577200616] [2020-09-25 12:26:00,848 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:00,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:00,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:00,872 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:00,875 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:02,994 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:02,996 INFO L93 Difference]: Finished difference Result 1069 states and 1495 transitions. [2020-09-25 12:26:02,996 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:02,998 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 71 [2020-09-25 12:26:02,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:03,021 INFO L225 Difference]: With dead ends: 1069 [2020-09-25 12:26:03,021 INFO L226 Difference]: Without dead ends: 555 [2020-09-25 12:26:03,031 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 [2020-09-25 12:26:03,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 555 states. [2020-09-25 12:26:03,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 555 to 543. [2020-09-25 12:26:03,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 543 states. [2020-09-25 12:26:03,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 543 states to 543 states and 670 transitions. [2020-09-25 12:26:03,126 INFO L78 Accepts]: Start accepts. Automaton has 543 states and 670 transitions. Word has length 71 [2020-09-25 12:26:03,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:03,127 INFO L479 AbstractCegarLoop]: Abstraction has 543 states and 670 transitions. [2020-09-25 12:26:03,127 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:03,127 INFO L276 IsEmpty]: Start isEmpty. Operand 543 states and 670 transitions. [2020-09-25 12:26:03,136 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 152 [2020-09-25 12:26:03,136 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:03,137 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:03,137 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:03,137 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:03,138 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:03,138 INFO L82 PathProgramCache]: Analyzing trace with hash 1195397277, now seen corresponding path program 1 times [2020-09-25 12:26:03,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:03,139 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1858718214] [2020-09-25 12:26:03,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:03,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:03,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:03,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:04,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:05,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 162 [2020-09-25 12:26:05,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:26:05,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2097 [2020-09-25 12:26:05,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:05,276 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:05,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:05,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-09-25 12:26:05,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:05,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:05,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:05,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:05,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:05,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:26:05,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:05,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:05,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:05,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:05,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:05,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:05,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:05,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:05,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:26:05,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:05,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 12:26:05,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:05,643 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:05,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 12:26:05,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:05,749 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 48 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:05,749 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1858718214] [2020-09-25 12:26:05,750 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:05,750 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 12:26:05,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [808472337] [2020-09-25 12:26:05,753 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 12:26:05,753 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:05,754 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 12:26:05,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:05,754 INFO L87 Difference]: Start difference. First operand 543 states and 670 transitions. Second operand 6 states. [2020-09-25 12:26:07,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:07,682 INFO L93 Difference]: Finished difference Result 1252 states and 1563 transitions. [2020-09-25 12:26:07,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:26:07,683 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 151 [2020-09-25 12:26:07,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:07,689 INFO L225 Difference]: With dead ends: 1252 [2020-09-25 12:26:07,689 INFO L226 Difference]: Without dead ends: 724 [2020-09-25 12:26:07,692 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 2 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:26:07,694 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 724 states. [2020-09-25 12:26:07,726 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 724 to 697. [2020-09-25 12:26:07,726 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 697 states. [2020-09-25 12:26:07,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 697 states to 697 states and 853 transitions. [2020-09-25 12:26:07,730 INFO L78 Accepts]: Start accepts. Automaton has 697 states and 853 transitions. Word has length 151 [2020-09-25 12:26:07,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:07,731 INFO L479 AbstractCegarLoop]: Abstraction has 697 states and 853 transitions. [2020-09-25 12:26:07,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 12:26:07,731 INFO L276 IsEmpty]: Start isEmpty. Operand 697 states and 853 transitions. [2020-09-25 12:26:07,739 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 161 [2020-09-25 12:26:07,740 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:07,740 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:07,740 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:07,740 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:07,741 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:07,741 INFO L82 PathProgramCache]: Analyzing trace with hash 659489306, now seen corresponding path program 1 times [2020-09-25 12:26:07,741 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:07,742 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [873291737] [2020-09-25 12:26:07,742 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:07,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:07,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:08,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:09,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:12,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-09-25 12:26:12,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:12,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-25 12:26:12,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:12,814 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:12,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:12,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-25 12:26:12,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:12,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:12,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:12,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:12,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:12,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 12:26:12,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:12,947 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:12,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:12,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:12,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:12,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:13,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:13,139 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:13,140 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:13,140 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 12:26:13,140 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:13,141 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:13,141 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:13,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:13,264 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:13,265 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [873291737] [2020-09-25 12:26:13,265 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:13,266 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:13,266 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215712281] [2020-09-25 12:26:13,268 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:13,269 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:13,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:13,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:13,270 INFO L87 Difference]: Start difference. First operand 697 states and 853 transitions. Second operand 8 states. [2020-09-25 12:26:16,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:16,628 INFO L93 Difference]: Finished difference Result 1725 states and 2227 transitions. [2020-09-25 12:26:16,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:26:16,629 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 160 [2020-09-25 12:26:16,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:16,639 INFO L225 Difference]: With dead ends: 1725 [2020-09-25 12:26:16,639 INFO L226 Difference]: Without dead ends: 1193 [2020-09-25 12:26:16,643 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=112, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:26:16,645 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1193 states. [2020-09-25 12:26:16,685 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1193 to 1066. [2020-09-25 12:26:16,685 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-25 12:26:16,690 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1291 transitions. [2020-09-25 12:26:16,691 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1291 transitions. Word has length 160 [2020-09-25 12:26:16,692 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:16,692 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1291 transitions. [2020-09-25 12:26:16,692 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:16,692 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1291 transitions. [2020-09-25 12:26:16,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 163 [2020-09-25 12:26:16,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:16,698 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:16,698 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:16,698 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:16,699 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:16,699 INFO L82 PathProgramCache]: Analyzing trace with hash 111502418, now seen corresponding path program 1 times [2020-09-25 12:26:16,699 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:16,699 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939202421] [2020-09-25 12:26:16,700 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:16,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:16,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:17,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:19,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 173 [2020-09-25 12:26:19,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:19,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2768 [2020-09-25 12:26:19,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:19,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:19,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:19,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 161 [2020-09-25 12:26:19,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:19,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:19,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:19,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:19,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:19,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:19,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:19,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:19,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:19,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:19,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:19,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:19,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:19,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:19,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:19,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:19,825 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:19,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:26:19,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:19,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 12:26:19,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:19,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:19,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:19,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:19,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:20,010 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 7 proven. 48 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:20,012 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939202421] [2020-09-25 12:26:20,014 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:20,015 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:20,015 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [189675227] [2020-09-25 12:26:20,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:20,017 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:20,017 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:20,019 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:20,019 INFO L87 Difference]: Start difference. First operand 1066 states and 1291 transitions. Second operand 8 states. [2020-09-25 12:26:23,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:23,751 INFO L93 Difference]: Finished difference Result 2352 states and 3041 transitions. [2020-09-25 12:26:23,751 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:26:23,752 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 162 [2020-09-25 12:26:23,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:23,770 INFO L225 Difference]: With dead ends: 2352 [2020-09-25 12:26:23,770 INFO L226 Difference]: Without dead ends: 1816 [2020-09-25 12:26:23,775 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:26:23,779 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2020-09-25 12:26:23,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1715. [2020-09-25 12:26:23,849 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-09-25 12:26:23,860 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2120 transitions. [2020-09-25 12:26:23,861 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2120 transitions. Word has length 162 [2020-09-25 12:26:23,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:23,863 INFO L479 AbstractCegarLoop]: Abstraction has 1715 states and 2120 transitions. [2020-09-25 12:26:23,863 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:23,863 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2120 transitions. [2020-09-25 12:26:23,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 180 [2020-09-25 12:26:23,875 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:23,875 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:23,876 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:23,876 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:23,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:23,877 INFO L82 PathProgramCache]: Analyzing trace with hash -677190618, now seen corresponding path program 1 times [2020-09-25 12:26:23,877 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:23,878 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405309000] [2020-09-25 12:26:23,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:23,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:23,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:24,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:28,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:28,938 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 190 [2020-09-25 12:26:28,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:26:28,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5018 [2020-09-25 12:26:28,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:28,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:28,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:26:28,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:26:28,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:29,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:29,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:29,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:26:29,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,079 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:29,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:26:29,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,105 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:29,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:29,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:29,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:26:29,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 12:26:29,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:29,347 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:29,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:26:29,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:29,514 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 55 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:29,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405309000] [2020-09-25 12:26:29,515 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:29,515 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 12:26:29,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840872865] [2020-09-25 12:26:29,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:29,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:29,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:29,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:29,520 INFO L87 Difference]: Start difference. First operand 1715 states and 2120 transitions. Second operand 8 states. [2020-09-25 12:26:32,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:32,918 INFO L93 Difference]: Finished difference Result 4534 states and 5951 transitions. [2020-09-25 12:26:32,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:26:32,919 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 179 [2020-09-25 12:26:32,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:32,942 INFO L225 Difference]: With dead ends: 4534 [2020-09-25 12:26:32,942 INFO L226 Difference]: Without dead ends: 2996 [2020-09-25 12:26:32,951 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:26:32,956 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2996 states. [2020-09-25 12:26:33,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2996 to 2934. [2020-09-25 12:26:33,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2934 states. [2020-09-25 12:26:33,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2934 states to 2934 states and 3696 transitions. [2020-09-25 12:26:33,081 INFO L78 Accepts]: Start accepts. Automaton has 2934 states and 3696 transitions. Word has length 179 [2020-09-25 12:26:33,082 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:33,082 INFO L479 AbstractCegarLoop]: Abstraction has 2934 states and 3696 transitions. [2020-09-25 12:26:33,082 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:33,082 INFO L276 IsEmpty]: Start isEmpty. Operand 2934 states and 3696 transitions. [2020-09-25 12:26:33,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 240 [2020-09-25 12:26:33,088 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:33,089 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:26:33,089 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:26:33,090 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:33,090 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:33,090 INFO L82 PathProgramCache]: Analyzing trace with hash -1644843063, now seen corresponding path program 1 times [2020-09-25 12:26:33,090 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:33,091 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098709252] [2020-09-25 12:26:33,091 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:33,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:33,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:36,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:37,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:38,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 252 [2020-09-25 12:26:38,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:38,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-09-25 12:26:38,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:38,197 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:38,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:38,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:26:38,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:38,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:38,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:38,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:38,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:38,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:38,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:26:38,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:38,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:38,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:38,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:38,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:38,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,433 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:38,433 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:38,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:38,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 12:26:38,434 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:38,434 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:38,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:38,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:26:38,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:38,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:26:38,502 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:38,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:38,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:38,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:38,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:38,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 12:26:38,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:38,635 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:26:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:38,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:38,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:38,785 INFO L134 CoverageAnalysis]: Checked inductivity of 186 backedges. 113 proven. 9 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 12:26:38,786 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098709252] [2020-09-25 12:26:38,786 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:38,786 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:26:38,787 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1450072828] [2020-09-25 12:26:38,787 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:26:38,787 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:38,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:26:38,788 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:26:38,788 INFO L87 Difference]: Start difference. First operand 2934 states and 3696 transitions. Second operand 9 states. [2020-09-25 12:26:42,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:42,111 INFO L93 Difference]: Finished difference Result 6077 states and 7926 transitions. [2020-09-25 12:26:42,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:26:42,115 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 239 [2020-09-25 12:26:42,115 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:42,136 INFO L225 Difference]: With dead ends: 6077 [2020-09-25 12:26:42,136 INFO L226 Difference]: Without dead ends: 3800 [2020-09-25 12:26:42,145 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=70, Invalid=202, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:26:42,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3800 states. [2020-09-25 12:26:42,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3800 to 3605. [2020-09-25 12:26:42,238 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3605 states. [2020-09-25 12:26:42,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3605 states to 3605 states and 4548 transitions. [2020-09-25 12:26:42,248 INFO L78 Accepts]: Start accepts. Automaton has 3605 states and 4548 transitions. Word has length 239 [2020-09-25 12:26:42,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:42,249 INFO L479 AbstractCegarLoop]: Abstraction has 3605 states and 4548 transitions. [2020-09-25 12:26:42,249 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:26:42,249 INFO L276 IsEmpty]: Start isEmpty. Operand 3605 states and 4548 transitions. [2020-09-25 12:26:42,254 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 244 [2020-09-25 12:26:42,255 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:42,255 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-09-25 12:26:42,255 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:26:42,255 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:42,256 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:42,256 INFO L82 PathProgramCache]: Analyzing trace with hash -772883364, now seen corresponding path program 1 times [2020-09-25 12:26:42,256 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:42,256 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [509992597] [2020-09-25 12:26:42,256 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:42,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:42,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:42,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking...