/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=0.8 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 07:55:25,148 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 07:55:25,154 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 07:55:25,197 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 07:55:25,197 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 07:55:25,205 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 07:55:25,207 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 07:55:25,211 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 07:55:25,214 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 07:55:25,218 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 07:55:25,219 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 07:55:25,220 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 07:55:25,220 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 07:55:25,224 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 07:55:25,226 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 07:55:25,228 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 07:55:25,230 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 07:55:25,231 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 07:55:25,233 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 07:55:25,243 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 07:55:25,245 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 07:55:25,247 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 07:55:25,248 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 07:55:25,249 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 07:55:25,261 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 07:55:25,262 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 07:55:25,262 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 07:55:25,267 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 07:55:25,268 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 07:55:25,269 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 07:55:25,269 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 07:55:25,274 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 07:55:25,275 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 07:55:25,276 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 07:55:25,278 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 07:55:25,278 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 07:55:25,279 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 07:55:25,280 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 07:55:25,280 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 07:55:25,281 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 07:55:25,282 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 07:55:25,284 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 07:55:25,329 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 07:55:25,329 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 07:55:25,331 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 07:55:25,332 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 07:55:25,332 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 07:55:25,332 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 07:55:25,332 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 07:55:25,333 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 07:55:25,333 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 07:55:25,333 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 07:55:25,334 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 07:55:25,334 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 07:55:25,334 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 07:55:25,335 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 07:55:25,335 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 07:55:25,336 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 07:55:25,336 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 07:55:25,336 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 07:55:25,336 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 07:55:25,336 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 07:55:25,337 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 07:55:25,337 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 07:55:25,337 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 07:55:25,337 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 07:55:25,337 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 07:55:25,338 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 07:55:25,338 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 07:55:25,338 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 07:55:25,338 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 07:55:25,338 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDESTAMONGSMALL;tolerance=0.8;log-additional-information=true; [2020-09-25 07:55:25,798 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 07:55:25,819 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 07:55:25,824 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 07:55:25,826 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 07:55:25,826 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 07:55:25,827 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 07:55:25,907 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0e906df3/bb7ec69ef0a343f4bab9b2e3aac32321/FLAG6de730fec [2020-09-25 07:55:26,483 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 07:55:26,484 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label02.c [2020-09-25 07:55:26,507 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0e906df3/bb7ec69ef0a343f4bab9b2e3aac32321/FLAG6de730fec [2020-09-25 07:55:26,744 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e0e906df3/bb7ec69ef0a343f4bab9b2e3aac32321 [2020-09-25 07:55:26,758 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 07:55:26,765 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 07:55:26,766 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:26,766 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 07:55:26,771 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 07:55:26,773 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:26" (1/1) ... [2020-09-25 07:55:26,778 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2a2283 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:26, skipping insertion in model container [2020-09-25 07:55:26,778 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 07:55:26" (1/1) ... [2020-09-25 07:55:26,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 07:55:26,844 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 07:55:27,482 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:27,496 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 07:55:27,611 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 07:55:27,630 INFO L208 MainTranslator]: Completed translation [2020-09-25 07:55:27,631 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27 WrapperNode [2020-09-25 07:55:27,631 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 07:55:27,632 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 07:55:27,632 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 07:55:27,632 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 07:55:27,651 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,651 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,670 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,671 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,713 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,731 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,737 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (1/1) ... [2020-09-25 07:55:27,747 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 07:55:27,748 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 07:55:27,748 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 07:55:27,748 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 07:55:27,750 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (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 07:55:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 07:55:27,860 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 07:55:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 07:55:27,861 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 07:55:27,861 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 07:55:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 07:55:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 07:55:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 07:55:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 07:55:27,862 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 07:55:27,863 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 07:55:29,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 07:55:29,457 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 07:55:29,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:29 BoogieIcfgContainer [2020-09-25 07:55:29,465 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 07:55:29,467 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 07:55:29,467 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 07:55:29,471 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 07:55:29,471 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 07:55:26" (1/3) ... [2020-09-25 07:55:29,472 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:29, skipping insertion in model container [2020-09-25 07:55:29,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 07:55:27" (2/3) ... [2020-09-25 07:55:29,473 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@374bbd20 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 07:55:29, skipping insertion in model container [2020-09-25 07:55:29,473 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 07:55:29" (3/3) ... [2020-09-25 07:55:29,475 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label02.c [2020-09-25 07:55:29,487 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 07:55:29,499 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 07:55:29,526 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 07:55:29,561 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 07:55:29,562 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 07:55:29,562 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 07:55:29,562 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 07:55:29,562 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 07:55:29,562 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 07:55:29,563 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 07:55:29,563 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 07:55:29,593 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 07:55:29,605 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 79 [2020-09-25 07:55:29,605 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:29,607 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:29,607 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:29,615 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:29,615 INFO L82 PathProgramCache]: Analyzing trace with hash 613515831, now seen corresponding path program 1 times [2020-09-25 07:55:29,627 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:29,627 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [914305392] [2020-09-25 07:55:29,628 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:29,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:29,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:30,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:30,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:55:30,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:30,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 998 [2020-09-25 07:55:30,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:30,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 07:55:30,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:55:30,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 07:55:31,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:31,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:31,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:31,054 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:31,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:31,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:31,055 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 07:55:31,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:31,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:31,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:31,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 07:55:31,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:31,087 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 07:55:31,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [914305392] [2020-09-25 07:55:31,091 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:31,092 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 07:55:31,093 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1865111613] [2020-09-25 07:55:31,100 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 07:55:31,101 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:31,122 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 07:55:31,124 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 07:55:31,127 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 07:55:33,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:33,114 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 07:55:33,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 07:55:33,116 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 78 [2020-09-25 07:55:33,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:33,140 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 07:55:33,140 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 07:55:33,151 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 07:55:33,178 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 07:55:33,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 07:55:33,255 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 07:55:33,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 07:55:33,263 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 78 [2020-09-25 07:55:33,264 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:33,265 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 07:55:33,266 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 07:55:33,266 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 07:55:33,287 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 07:55:33,287 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:33,293 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:33,294 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 07:55:33,294 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:33,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:33,294 INFO L82 PathProgramCache]: Analyzing trace with hash 970656551, now seen corresponding path program 1 times [2020-09-25 07:55:33,295 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:33,295 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2116961167] [2020-09-25 07:55:33,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:33,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:33,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:33,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:34,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:38,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 07:55:38,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 07:55:38,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-09-25 07:55:38,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:38,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:38,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:55:38,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 07:55:38,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:38,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:38,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:38,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:38,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:38,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:38,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 07:55:38,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:38,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:38,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:38,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:38,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 07:55:38,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:38,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:38,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:38,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:38,668 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:55:38,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:38,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 07:55:38,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:38,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:38,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:38,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:38,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:55:38,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:38,735 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 61 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:38,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2116961167] [2020-09-25 07:55:38,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:38,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 07:55:38,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2051414366] [2020-09-25 07:55:38,738 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 07:55:38,739 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:38,739 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 07:55:38,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 07:55:38,740 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 6 states. [2020-09-25 07:55:41,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:41,151 INFO L93 Difference]: Finished difference Result 850 states and 1122 transitions. [2020-09-25 07:55:41,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 07:55:41,152 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 157 [2020-09-25 07:55:41,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:41,161 INFO L225 Difference]: With dead ends: 850 [2020-09-25 07:55:41,163 INFO L226 Difference]: Without dead ends: 848 [2020-09-25 07:55:41,165 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:55:41,167 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 848 states. [2020-09-25 07:55:41,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 848 to 848. [2020-09-25 07:55:41,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 848 states. [2020-09-25 07:55:41,222 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 848 states to 848 states and 1119 transitions. [2020-09-25 07:55:41,223 INFO L78 Accepts]: Start accepts. Automaton has 848 states and 1119 transitions. Word has length 157 [2020-09-25 07:55:41,224 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:41,224 INFO L479 AbstractCegarLoop]: Abstraction has 848 states and 1119 transitions. [2020-09-25 07:55:41,224 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 07:55:41,224 INFO L276 IsEmpty]: Start isEmpty. Operand 848 states and 1119 transitions. [2020-09-25 07:55:41,236 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 215 [2020-09-25 07:55:41,236 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:41,237 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:41,237 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 07:55:41,237 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:41,238 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:41,238 INFO L82 PathProgramCache]: Analyzing trace with hash -1579224162, now seen corresponding path program 1 times [2020-09-25 07:55:41,238 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:41,238 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1608078625] [2020-09-25 07:55:41,239 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:41,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:41,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:41,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:42,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:43,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:46,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 225 [2020-09-25 07:55:46,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:55:46,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:55:46,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:46,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 07:55:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 07:55:46,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 07:55:46,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:46,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:46,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:46,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:46,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:46,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:46,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 07:55:46,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:46,367 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:46,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 07:55:46,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:46,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:46,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:46,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:46,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:46,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-09-25 07:55:46,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:46,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 07:55:46,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:46,618 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:55:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:55:46,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-09-25 07:55:46,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:46,756 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 62 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 07:55:46,757 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1608078625] [2020-09-25 07:55:46,757 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 07:55:46,757 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 07:55:46,758 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758124723] [2020-09-25 07:55:46,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 07:55:46,759 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:46,759 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 07:55:46,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 07:55:46,759 INFO L87 Difference]: Start difference. First operand 848 states and 1119 transitions. Second operand 7 states. [2020-09-25 07:55:49,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:49,065 INFO L93 Difference]: Finished difference Result 1852 states and 2503 transitions. [2020-09-25 07:55:49,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 07:55:49,066 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 214 [2020-09-25 07:55:49,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:49,075 INFO L225 Difference]: With dead ends: 1852 [2020-09-25 07:55:49,076 INFO L226 Difference]: Without dead ends: 1019 [2020-09-25 07:55:49,080 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-09-25 07:55:49,081 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1019 states. [2020-09-25 07:55:49,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1019 to 853. [2020-09-25 07:55:49,119 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 853 states. [2020-09-25 07:55:49,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 853 states to 853 states and 1091 transitions. [2020-09-25 07:55:49,124 INFO L78 Accepts]: Start accepts. Automaton has 853 states and 1091 transitions. Word has length 214 [2020-09-25 07:55:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:49,130 INFO L479 AbstractCegarLoop]: Abstraction has 853 states and 1091 transitions. [2020-09-25 07:55:49,130 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 07:55:49,130 INFO L276 IsEmpty]: Start isEmpty. Operand 853 states and 1091 transitions. [2020-09-25 07:55:49,137 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 287 [2020-09-25 07:55:49,138 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:49,138 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:49,138 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 07:55:49,139 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:49,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:49,139 INFO L82 PathProgramCache]: Analyzing trace with hash 63532064, now seen corresponding path program 1 times [2020-09-25 07:55:49,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:49,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [274975294] [2020-09-25 07:55:49,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:49,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:49,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:49,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:54,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 299 [2020-09-25 07:55:54,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 07:55:54,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 07:55:54,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:54,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 07:55:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-09-25 07:55:54,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 157 [2020-09-25 07:55:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:54,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:55:54,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:54,384 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:55:54,384 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:54,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 07:55:54,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:54,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:55:54,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:54,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:55:54,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:54,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:55:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:54,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:54,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 07:55:54,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:55:54,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 07:55:54,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:54,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 07:55:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:54,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 07:55:54,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:54,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 07:55:54,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:54,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:54,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:55:55,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:55:55,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 07:55:55,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 07:55:55,174 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-09-25 07:55:55,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:55:55,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:55:55,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:55:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:55:55,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 121 [2020-09-25 07:55:55,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:55:55,336 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 132 proven. 4 refuted. 0 times theorem prover too weak. 64 trivial. 0 not checked. [2020-09-25 07:55:55,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [274975294] [2020-09-25 07:55:55,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:55:55,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 07:55:55,337 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876545756] [2020-09-25 07:55:55,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 07:55:55,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:55:55,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 07:55:55,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-09-25 07:55:55,339 INFO L87 Difference]: Start difference. First operand 853 states and 1091 transitions. Second operand 9 states. [2020-09-25 07:55:59,764 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:55:59,768 INFO L93 Difference]: Finished difference Result 2058 states and 2730 transitions. [2020-09-25 07:55:59,768 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 07:55:59,769 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 286 [2020-09-25 07:55:59,773 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:55:59,786 INFO L225 Difference]: With dead ends: 2058 [2020-09-25 07:55:59,787 INFO L226 Difference]: Without dead ends: 1346 [2020-09-25 07:55:59,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=81, Invalid=159, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:55:59,793 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1346 states. [2020-09-25 07:55:59,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1346 to 1160. [2020-09-25 07:55:59,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1160 states. [2020-09-25 07:55:59,847 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1160 states to 1160 states and 1454 transitions. [2020-09-25 07:55:59,847 INFO L78 Accepts]: Start accepts. Automaton has 1160 states and 1454 transitions. Word has length 286 [2020-09-25 07:55:59,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:55:59,848 INFO L479 AbstractCegarLoop]: Abstraction has 1160 states and 1454 transitions. [2020-09-25 07:55:59,848 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 07:55:59,848 INFO L276 IsEmpty]: Start isEmpty. Operand 1160 states and 1454 transitions. [2020-09-25 07:55:59,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 303 [2020-09-25 07:55:59,855 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:55:59,856 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:55:59,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 07:55:59,856 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:55:59,857 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:55:59,857 INFO L82 PathProgramCache]: Analyzing trace with hash -2136866632, now seen corresponding path program 1 times [2020-09-25 07:55:59,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:55:59,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2093256873] [2020-09-25 07:55:59,858 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:55:59,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:55:59,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:00,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:02,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:03,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:04,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:04,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 315 [2020-09-25 07:56:04,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 07:56:04,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 07:56:04,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:04,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 103 [2020-09-25 07:56:04,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:56:04,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:05,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:05,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:05,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:05,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:05,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:05,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:05,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:05,030 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:05,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:05,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:05,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:05,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:05,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 07:56:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-09-25 07:56:05,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:05,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:05,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-25 07:56:05,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:05,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 110 [2020-09-25 07:56:05,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:05,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:05,450 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:05,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:56:05,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:05,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-25 07:56:05,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:05,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:05,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:56:05,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:05,571 INFO L134 CoverageAnalysis]: Checked inductivity of 209 backedges. 206 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:05,572 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2093256873] [2020-09-25 07:56:05,572 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:05,572 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:05,572 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953543556] [2020-09-25 07:56:05,573 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:05,573 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:05,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:05,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:05,574 INFO L87 Difference]: Start difference. First operand 1160 states and 1454 transitions. Second operand 8 states. [2020-09-25 07:56:08,580 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 07:56:08,580 INFO L93 Difference]: Finished difference Result 3035 states and 4011 transitions. [2020-09-25 07:56:08,581 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 07:56:08,581 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 302 [2020-09-25 07:56:08,582 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 07:56:08,592 INFO L225 Difference]: With dead ends: 3035 [2020-09-25 07:56:08,592 INFO L226 Difference]: Without dead ends: 1890 [2020-09-25 07:56:08,596 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=71, Invalid=169, Unknown=0, NotChecked=0, Total=240 [2020-09-25 07:56:08,599 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1890 states. [2020-09-25 07:56:08,663 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1890 to 1820. [2020-09-25 07:56:08,663 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1820 states. [2020-09-25 07:56:08,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1820 states to 1820 states and 2410 transitions. [2020-09-25 07:56:08,674 INFO L78 Accepts]: Start accepts. Automaton has 1820 states and 2410 transitions. Word has length 302 [2020-09-25 07:56:08,675 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 07:56:08,675 INFO L479 AbstractCegarLoop]: Abstraction has 1820 states and 2410 transitions. [2020-09-25 07:56:08,675 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 07:56:08,675 INFO L276 IsEmpty]: Start isEmpty. Operand 1820 states and 2410 transitions. [2020-09-25 07:56:08,686 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 305 [2020-09-25 07:56:08,686 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 07:56:08,687 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 07:56:08,687 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 07:56:08,687 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 07:56:08,688 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 07:56:08,688 INFO L82 PathProgramCache]: Analyzing trace with hash -669780688, now seen corresponding path program 1 times [2020-09-25 07:56:08,688 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 07:56:08,689 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1936110191] [2020-09-25 07:56:08,689 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 07:56:08,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:08,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:08,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:09,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,745 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 317 [2020-09-25 07:56:13,745 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 07:56:13,745 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-09-25 07:56:13,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,746 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 07:56:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-09-25 07:56:13,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 138 [2020-09-25 07:56:13,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 07:56:13,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 07:56:13,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,828 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 07:56:13,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 07:56:13,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 07:56:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:13,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 07:56:13,829 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:13,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 07:56:13,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:13,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:13,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:13,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 07:56:13,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:13,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 07:56:13,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:13,946 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:13,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 07:56:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 07:56:13,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 07:56:13,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:13,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 112 [2020-09-25 07:56:14,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 07:56:14,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 07:56:14,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 07:56:14,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 07:56:14,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 07:56:14,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 07:56:14,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 07:56:14,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.8 [2020-09-25 07:56:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 07:56:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 07:56:14,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-09-25 07:56:14,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 07:56:14,299 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 208 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 07:56:14,300 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1936110191] [2020-09-25 07:56:14,300 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 07:56:14,300 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 07:56:14,300 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117782207] [2020-09-25 07:56:14,301 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 07:56:14,301 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 07:56:14,301 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 07:56:14,302 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 07:56:14,302 INFO L87 Difference]: Start difference. First operand 1820 states and 2410 transitions. Second operand 8 states.