/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_label17.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:26:26,229 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:26:26,233 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:26:26,259 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:26:26,260 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:26:26,261 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:26:26,262 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:26:26,264 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:26:26,266 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:26:26,267 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:26:26,267 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:26:26,269 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:26:26,269 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:26:26,270 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:26:26,271 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:26:26,272 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:26:26,273 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:26:26,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:26:26,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:26:26,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:26:26,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:26:26,281 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:26:26,282 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:26:26,283 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:26:26,286 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:26:26,286 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:26:26,286 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:26:26,287 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:26:26,288 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:26:26,289 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:26:26,289 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:26:26,290 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:26:26,291 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:26:26,292 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:26:26,293 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:26:26,293 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:26:26,294 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:26:26,294 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:26:26,294 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:26:26,295 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:26:26,296 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:26:26,297 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 12:26:26,324 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:26:26,324 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:26:26,326 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:26:26,326 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:26:26,326 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:26:26,326 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:26:26,326 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:26:26,327 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:26:26,327 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:26:26,327 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:26:26,327 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:26:26,327 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:26:26,328 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:26:26,328 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:26:26,328 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:26:26,328 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:26:26,328 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:26:26,329 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:26:26,329 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:26:26,329 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:26:26,329 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:26:26,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:26:26,330 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:26:26,330 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:26:26,330 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:26:26,330 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:26:26,330 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:26:26,331 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:26:26,331 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:26:26,331 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 12:26:26,824 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:26:26,846 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:26:26,851 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:26:26,853 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:26:26,853 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:26:26,855 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 12:26:26,940 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37268a5f4/19ae5355a2fb460b8546af1b3167ea3d/FLAG45e0e9cf9 [2020-09-25 12:26:27,583 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:26:27,584 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem10_label17.c [2020-09-25 12:26:27,617 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37268a5f4/19ae5355a2fb460b8546af1b3167ea3d/FLAG45e0e9cf9 [2020-09-25 12:26:27,815 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/37268a5f4/19ae5355a2fb460b8546af1b3167ea3d [2020-09-25 12:26:27,831 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:26:27,841 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:26:27,844 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:27,844 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:26:27,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:26:27,849 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,855 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4ccc0ea3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:27, skipping insertion in model container [2020-09-25 12:26:27,856 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:26:27" (1/1) ... [2020-09-25 12:26:27,866 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:26:27,934 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:26:28,430 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:28,438 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:26:28,657 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:26:28,684 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:26:28,684 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28 WrapperNode [2020-09-25 12:26:28,684 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:26:28,685 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:26:28,685 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:26:28,686 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:26:28,700 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (1/1) ... [2020-09-25 12:26:28,700 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (1/1) ... [2020-09-25 12:26:28,719 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (1/1) ... [2020-09-25 12:26:28,720 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (1/1) ... [2020-09-25 12:26:28,770 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (1/1) ... [2020-09-25 12:26:28,794 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (1/1) ... [2020-09-25 12:26:28,806 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (1/1) ... [2020-09-25 12:26:28,819 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:26:28,820 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:26:28,820 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:26:28,820 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:26:28,821 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (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 12:26:28,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:26:28,917 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:26:28,918 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-09-25 12:26:28,918 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:26:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-09-25 12:26:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:26:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:26:28,918 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-25 12:26:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:26:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:26:28,919 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:26:30,386 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:26:30,387 INFO L295 CfgBuilder]: Removed 1 assume(true) statements. [2020-09-25 12:26:30,396 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:30 BoogieIcfgContainer [2020-09-25 12:26:30,396 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:26:30,398 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:26:30,398 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:26:30,402 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:26:30,402 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:26:27" (1/3) ... [2020-09-25 12:26:30,403 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:30, skipping insertion in model container [2020-09-25 12:26:30,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:26:28" (2/3) ... [2020-09-25 12:26:30,404 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@411ae65c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:26:30, skipping insertion in model container [2020-09-25 12:26:30,404 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:26:30" (3/3) ... [2020-09-25 12:26:30,406 INFO L109 eAbstractionObserver]: Analyzing ICFG Problem10_label17.c [2020-09-25 12:26:30,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:26:30,430 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:26:30,457 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:26:30,495 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:26:30,495 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:26:30,495 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:26:30,495 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:26:30,495 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:26:30,496 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:26:30,496 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:26:30,496 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:26:30,529 INFO L276 IsEmpty]: Start isEmpty. Operand 456 states. [2020-09-25 12:26:30,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-25 12:26:30,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:30,542 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] [2020-09-25 12:26:30,542 INFO L427 AbstractCegarLoop]: === Iteration 1 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:30,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:30,551 INFO L82 PathProgramCache]: Analyzing trace with hash -796596049, now seen corresponding path program 1 times [2020-09-25 12:26:30,563 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:30,564 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159932049] [2020-09-25 12:26:30,564 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:30,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:30,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:31,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:31,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:31,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:31,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 12:26:31,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:26:31,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 734 [2020-09-25 12:26:31,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:31,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:26:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:31,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:26:31,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:26:31,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:31,652 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:31,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:31,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:31,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:31,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:31,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:26:31,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:31,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:31,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:31,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:31,706 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 12:26:31,707 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159932049] [2020-09-25 12:26:31,709 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:26:31,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-25 12:26:31,711 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1657179689] [2020-09-25 12:26:31,718 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-25 12:26:31,718 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:31,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-25 12:26:31,738 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-25 12:26:31,741 INFO L87 Difference]: Start difference. First operand 456 states. Second operand 4 states. [2020-09-25 12:26:33,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:33,810 INFO L93 Difference]: Finished difference Result 1104 states and 1521 transitions. [2020-09-25 12:26:33,811 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:26:33,813 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 49 [2020-09-25 12:26:33,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:33,836 INFO L225 Difference]: With dead ends: 1104 [2020-09-25 12:26:33,836 INFO L226 Difference]: Without dead ends: 578 [2020-09-25 12:26:33,846 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 2 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:33,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 578 states. [2020-09-25 12:26:33,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 578 to 544. [2020-09-25 12:26:33,933 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 544 states. [2020-09-25 12:26:33,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 544 states to 544 states and 655 transitions. [2020-09-25 12:26:33,939 INFO L78 Accepts]: Start accepts. Automaton has 544 states and 655 transitions. Word has length 49 [2020-09-25 12:26:33,939 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:33,939 INFO L479 AbstractCegarLoop]: Abstraction has 544 states and 655 transitions. [2020-09-25 12:26:33,939 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-25 12:26:33,940 INFO L276 IsEmpty]: Start isEmpty. Operand 544 states and 655 transitions. [2020-09-25 12:26:33,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 129 [2020-09-25 12:26:33,951 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:33,951 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:33,952 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:26:33,952 INFO L427 AbstractCegarLoop]: === Iteration 2 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:33,952 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:33,953 INFO L82 PathProgramCache]: Analyzing trace with hash 1427265920, now seen corresponding path program 1 times [2020-09-25 12:26:33,953 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:33,953 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734648788] [2020-09-25 12:26:33,953 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:33,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:34,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:34,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:35,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:39,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-09-25 12:26:39,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:26:39,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:26:39,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:39,008 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:39,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:26:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-09-25 12:26:39,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-09-25 12:26:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:26:39,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:39,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:39,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:39,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:39,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:39,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:39,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:39,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:39,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:39,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:26:39,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:39,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:39,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:39,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:39,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:26:39,358 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:26:39,358 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-09-25 12:26:39,359 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:39,359 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:39,359 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:39,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-09-25 12:26:39,360 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:39,418 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 25 proven. 1 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 12:26:39,419 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734648788] [2020-09-25 12:26:39,419 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:39,420 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:26:39,420 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [391470809] [2020-09-25 12:26:39,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:26:39,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:39,423 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:26:39,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:26:39,424 INFO L87 Difference]: Start difference. First operand 544 states and 655 transitions. Second operand 5 states. [2020-09-25 12:26:41,264 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:41,264 INFO L93 Difference]: Finished difference Result 1224 states and 1530 transitions. [2020-09-25 12:26:41,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:26:41,265 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 128 [2020-09-25 12:26:41,267 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:41,271 INFO L225 Difference]: With dead ends: 1224 [2020-09-25 12:26:41,272 INFO L226 Difference]: Without dead ends: 695 [2020-09-25 12:26:41,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-09-25 12:26:41,277 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 695 states. [2020-09-25 12:26:41,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 695 to 695. [2020-09-25 12:26:41,331 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 695 states. [2020-09-25 12:26:41,336 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 695 states to 695 states and 850 transitions. [2020-09-25 12:26:41,336 INFO L78 Accepts]: Start accepts. Automaton has 695 states and 850 transitions. Word has length 128 [2020-09-25 12:26:41,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:41,337 INFO L479 AbstractCegarLoop]: Abstraction has 695 states and 850 transitions. [2020-09-25 12:26:41,337 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:26:41,337 INFO L276 IsEmpty]: Start isEmpty. Operand 695 states and 850 transitions. [2020-09-25 12:26:41,347 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 139 [2020-09-25 12:26:41,348 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:41,349 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:41,349 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:26:41,349 INFO L427 AbstractCegarLoop]: === Iteration 3 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:41,350 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:41,350 INFO L82 PathProgramCache]: Analyzing trace with hash -863517790, now seen corresponding path program 1 times [2020-09-25 12:26:41,350 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:41,351 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [815483612] [2020-09-25 12:26:41,351 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:41,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:41,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:41,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:45,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:46,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 149 [2020-09-25 12:26:46,416 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:26:46,416 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 12:26:46,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:46,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:46,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 137 [2020-09-25 12:26:46,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:46,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:46,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:46,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:46,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:46,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:46,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 12:26:46,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:46,524 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:46,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:46,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:46,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:46,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:46,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:46,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:46,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:46,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:26:46,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:46,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 12:26:46,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:46,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:46,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:26:46,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:46,815 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 0 proven. 33 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:46,816 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [815483612] [2020-09-25 12:26:46,816 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:46,816 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:46,817 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [879644820] [2020-09-25 12:26:46,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:46,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:46,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:46,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:46,821 INFO L87 Difference]: Start difference. First operand 695 states and 850 transitions. Second operand 8 states. [2020-09-25 12:26:50,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:50,297 INFO L93 Difference]: Finished difference Result 1719 states and 2213 transitions. [2020-09-25 12:26:50,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:26:50,298 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 138 [2020-09-25 12:26:50,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:50,317 INFO L225 Difference]: With dead ends: 1719 [2020-09-25 12:26:50,317 INFO L226 Difference]: Without dead ends: 1189 [2020-09-25 12:26:50,320 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 12:26:50,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1189 states. [2020-09-25 12:26:50,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1189 to 1066. [2020-09-25 12:26:50,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1066 states. [2020-09-25 12:26:50,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1066 states to 1066 states and 1292 transitions. [2020-09-25 12:26:50,402 INFO L78 Accepts]: Start accepts. Automaton has 1066 states and 1292 transitions. Word has length 138 [2020-09-25 12:26:50,405 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:50,405 INFO L479 AbstractCegarLoop]: Abstraction has 1066 states and 1292 transitions. [2020-09-25 12:26:50,405 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:50,405 INFO L276 IsEmpty]: Start isEmpty. Operand 1066 states and 1292 transitions. [2020-09-25 12:26:50,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-25 12:26:50,416 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:50,416 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:50,416 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:26:50,416 INFO L427 AbstractCegarLoop]: === Iteration 4 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:50,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:50,417 INFO L82 PathProgramCache]: Analyzing trace with hash 1456961498, now seen corresponding path program 1 times [2020-09-25 12:26:50,417 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:50,424 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [782175691] [2020-09-25 12:26:50,424 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:50,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:50,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:50,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:51,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:53,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-09-25 12:26:53,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:26:53,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2548 [2020-09-25 12:26:53,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:53,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:26:53,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:26:53,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 139 [2020-09-25 12:26:53,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:53,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:26:53,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:53,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:53,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:26:53,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:53,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:26:53,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:53,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:53,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:26:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:26:53,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:26:53,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:53,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:26:53,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:53,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:53,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:26:53,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-09-25 12:26:53,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:26:53,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-25 12:26:53,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:26:53,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:26:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:26:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:26:53,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:26:53,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:26:53,498 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 7 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:26:53,502 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [782175691] [2020-09-25 12:26:53,502 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:26:53,503 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 12:26:53,503 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1981753918] [2020-09-25 12:26:53,505 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 12:26:53,505 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:26:53,505 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 12:26:53,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:26:53,507 INFO L87 Difference]: Start difference. First operand 1066 states and 1292 transitions. Second operand 8 states. [2020-09-25 12:26:57,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:26:57,105 INFO L93 Difference]: Finished difference Result 2352 states and 3045 transitions. [2020-09-25 12:26:57,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 12:26:57,106 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 140 [2020-09-25 12:26:57,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:26:57,116 INFO L225 Difference]: With dead ends: 2352 [2020-09-25 12:26:57,117 INFO L226 Difference]: Without dead ends: 1816 [2020-09-25 12:26:57,120 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 12:26:57,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1816 states. [2020-09-25 12:26:57,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1816 to 1715. [2020-09-25 12:26:57,164 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1715 states. [2020-09-25 12:26:57,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1715 states to 1715 states and 2120 transitions. [2020-09-25 12:26:57,173 INFO L78 Accepts]: Start accepts. Automaton has 1715 states and 2120 transitions. Word has length 140 [2020-09-25 12:26:57,173 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:26:57,173 INFO L479 AbstractCegarLoop]: Abstraction has 1715 states and 2120 transitions. [2020-09-25 12:26:57,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 12:26:57,174 INFO L276 IsEmpty]: Start isEmpty. Operand 1715 states and 2120 transitions. [2020-09-25 12:26:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 158 [2020-09-25 12:26:57,176 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:26:57,177 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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 12:26:57,177 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:26:57,177 INFO L427 AbstractCegarLoop]: === Iteration 5 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:26:57,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:26:57,178 INFO L82 PathProgramCache]: Analyzing trace with hash -1274196626, now seen corresponding path program 1 times [2020-09-25 12:26:57,178 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:26:57,178 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462639032] [2020-09-25 12:26:57,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:26:57,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:26:57,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:57,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:26:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 168 [2020-09-25 12:27:01,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 12:27:01,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4525 [2020-09-25 12:27:01,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,734 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:27:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-25 12:27:01,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:27:01,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:01,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:01,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:01,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:01,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:01,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:01,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:01,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:27:01,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:01,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:01,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:01,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:27:01,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:01,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:01,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:01,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:02,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:02,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 104 [2020-09-25 12:27:02,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:02,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 12:27:02,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:02,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:02,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 12:27:02,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:02,158 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 33 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:27:02,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462639032] [2020-09-25 12:27:02,159 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:27:02,159 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:27:02,160 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [157500092] [2020-09-25 12:27:02,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:27:02,163 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:02,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:27:02,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:27:02,164 INFO L87 Difference]: Start difference. First operand 1715 states and 2120 transitions. Second operand 7 states. [2020-09-25 12:27:04,609 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:04,610 INFO L93 Difference]: Finished difference Result 4056 states and 5204 transitions. [2020-09-25 12:27:04,611 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 12:27:04,611 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 157 [2020-09-25 12:27:04,612 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:04,626 INFO L225 Difference]: With dead ends: 4056 [2020-09-25 12:27:04,627 INFO L226 Difference]: Without dead ends: 2518 [2020-09-25 12:27:04,634 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 12:27:04,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2518 states. [2020-09-25 12:27:04,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2518 to 2474. [2020-09-25 12:27:04,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2474 states. [2020-09-25 12:27:04,716 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2474 states to 2474 states and 3000 transitions. [2020-09-25 12:27:04,716 INFO L78 Accepts]: Start accepts. Automaton has 2474 states and 3000 transitions. Word has length 157 [2020-09-25 12:27:04,717 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:04,717 INFO L479 AbstractCegarLoop]: Abstraction has 2474 states and 3000 transitions. [2020-09-25 12:27:04,717 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:27:04,717 INFO L276 IsEmpty]: Start isEmpty. Operand 2474 states and 3000 transitions. [2020-09-25 12:27:04,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 218 [2020-09-25 12:27:04,722 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:04,723 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:27:04,723 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:27:04,723 INFO L427 AbstractCegarLoop]: === Iteration 6 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:04,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:04,723 INFO L82 PathProgramCache]: Analyzing trace with hash -2078590991, now seen corresponding path program 1 times [2020-09-25 12:27:04,724 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:04,724 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1861429701] [2020-09-25 12:27:04,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:04,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:04,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:04,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:05,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:06,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,771 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:09,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 230 [2020-09-25 12:27:09,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:27:09,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-25 12:27:09,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:09,772 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 12:27:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:27:09,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 174 [2020-09-25 12:27:09,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:09,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:27:09,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:09,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:09,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:09,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-09-25 12:27:09,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:09,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:27:09,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:09,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:27:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:27:09,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:27:09,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:27:09,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 21 [2020-09-25 12:27:09,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,057 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 12:27:10,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:10,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-09-25 12:27:10,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,059 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:27:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:10,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:27:10,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2020-09-25 12:27:10,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:10,474 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:27:10,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 12:27:10,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:27:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 12:27:10,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:27:10,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:27:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:27:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-09-25 12:27:10,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 84 [2020-09-25 12:27:10,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:27:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 69 proven. 72 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:27:10,762 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1861429701] [2020-09-25 12:27:10,763 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:27:10,764 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 12:27:10,764 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1429318802] [2020-09-25 12:27:10,765 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 12:27:10,765 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:27:10,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 12:27:10,766 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:27:10,766 INFO L87 Difference]: Start difference. First operand 2474 states and 3000 transitions. Second operand 10 states. [2020-09-25 12:27:14,495 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:27:14,495 INFO L93 Difference]: Finished difference Result 5090 states and 6550 transitions. [2020-09-25 12:27:14,497 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:27:14,497 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 217 [2020-09-25 12:27:14,498 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:27:14,515 INFO L225 Difference]: With dead ends: 5090 [2020-09-25 12:27:14,515 INFO L226 Difference]: Without dead ends: 3273 [2020-09-25 12:27:14,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 68 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=128, Invalid=334, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:27:14,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3273 states. [2020-09-25 12:27:14,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3273 to 3175. [2020-09-25 12:27:14,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3175 states. [2020-09-25 12:27:14,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3175 states to 3175 states and 3867 transitions. [2020-09-25 12:27:14,607 INFO L78 Accepts]: Start accepts. Automaton has 3175 states and 3867 transitions. Word has length 217 [2020-09-25 12:27:14,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:27:14,608 INFO L479 AbstractCegarLoop]: Abstraction has 3175 states and 3867 transitions. [2020-09-25 12:27:14,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 12:27:14,608 INFO L276 IsEmpty]: Start isEmpty. Operand 3175 states and 3867 transitions. [2020-09-25 12:27:14,612 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 222 [2020-09-25 12:27:14,612 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:27:14,613 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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 12:27:14,613 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:27:14,613 INFO L427 AbstractCegarLoop]: === Iteration 7 === [calculate_outputErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:27:14,613 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:27:14,614 INFO L82 PathProgramCache]: Analyzing trace with hash 1170652356, now seen corresponding path program 1 times [2020-09-25 12:27:14,614 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:27:14,614 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [574793139] [2020-09-25 12:27:14,614 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:27:14,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:27:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:14,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:27:15,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking...