/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=0.5 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci04.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 14:28:57,194 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 14:28:57,199 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 14:28:57,239 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 14:28:57,239 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 14:28:57,240 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 14:28:57,242 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 14:28:57,244 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 14:28:57,245 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 14:28:57,246 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 14:28:57,248 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 14:28:57,249 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 14:28:57,249 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 14:28:57,250 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 14:28:57,252 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 14:28:57,253 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 14:28:57,254 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 14:28:57,255 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 14:28:57,257 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 14:28:57,259 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 14:28:57,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 14:28:57,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 14:28:57,264 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 14:28:57,265 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 14:28:57,267 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 14:28:57,268 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 14:28:57,268 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 14:28:57,269 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 14:28:57,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 14:28:57,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 14:28:57,271 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 14:28:57,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 14:28:57,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 14:28:57,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 14:28:57,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 14:28:57,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 14:28:57,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 14:28:57,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 14:28:57,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 14:28:57,278 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 14:28:57,279 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 14:28:57,280 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 14:28:57,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 14:28:57,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 14:28:57,308 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 14:28:57,308 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 14:28:57,309 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 14:28:57,309 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 14:28:57,309 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 14:28:57,309 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 14:28:57,310 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 14:28:57,310 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 14:28:57,310 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 14:28:57,310 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 14:28:57,310 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 14:28:57,311 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 14:28:57,311 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 14:28:57,311 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 14:28:57,311 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 14:28:57,312 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 14:28:57,312 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 14:28:57,312 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 14:28:57,312 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 14:28:57,312 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 14:28:57,313 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 14:28:57,313 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 14:28:57,313 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 14:28:57,313 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 14:28:57,313 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 14:28:57,314 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 14:28:57,314 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 14:28:57,314 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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;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=0.5;log-additional-information=true; [2020-09-25 14:28:57,773 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 14:28:57,791 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 14:28:57,796 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 14:28:57,798 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 14:28:57,798 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 14:28:57,799 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 14:28:57,891 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1ab9fe28/dc983da23af7439b9c449b671a20b6b7/FLAGa12654e8c [2020-09-25 14:28:58,412 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 14:28:58,413 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci04.c [2020-09-25 14:28:58,420 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1ab9fe28/dc983da23af7439b9c449b671a20b6b7/FLAGa12654e8c [2020-09-25 14:28:58,757 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f1ab9fe28/dc983da23af7439b9c449b671a20b6b7 [2020-09-25 14:28:58,769 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 14:28:58,776 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 14:28:58,778 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:58,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 14:28:58,783 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 14:28:58,784 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:58" (1/1) ... [2020-09-25 14:28:58,789 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@738c85d3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:58, skipping insertion in model container [2020-09-25 14:28:58,789 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 02:28:58" (1/1) ... [2020-09-25 14:28:58,799 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 14:28:58,826 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 14:28:59,055 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:59,059 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 14:28:59,079 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 14:28:59,097 INFO L208 MainTranslator]: Completed translation [2020-09-25 14:28:59,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59 WrapperNode [2020-09-25 14:28:59,098 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 14:28:59,098 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 14:28:59,099 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 14:28:59,099 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 14:28:59,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (1/1) ... [2020-09-25 14:28:59,117 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (1/1) ... [2020-09-25 14:28:59,199 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (1/1) ... [2020-09-25 14:28:59,200 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (1/1) ... [2020-09-25 14:28:59,205 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (1/1) ... [2020-09-25 14:28:59,208 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (1/1) ... [2020-09-25 14:28:59,209 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (1/1) ... [2020-09-25 14:28:59,211 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 14:28:59,211 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 14:28:59,211 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 14:28:59,212 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 14:28:59,213 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (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 14:28:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 14:28:59,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 14:28:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 14:28:59,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 14:28:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 14:28:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 14:28:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 14:28:59,302 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 14:28:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 14:28:59,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 14:28:59,516 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 14:28:59,517 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 14:28:59,541 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:59 BoogieIcfgContainer [2020-09-25 14:28:59,541 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 14:28:59,546 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 14:28:59,547 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 14:28:59,559 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 14:28:59,559 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 02:28:58" (1/3) ... [2020-09-25 14:28:59,561 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98038d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:59, skipping insertion in model container [2020-09-25 14:28:59,561 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 02:28:59" (2/3) ... [2020-09-25 14:28:59,562 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@98038d1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 02:28:59, skipping insertion in model container [2020-09-25 14:28:59,562 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 02:28:59" (3/3) ... [2020-09-25 14:28:59,568 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci04.c [2020-09-25 14:28:59,598 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 14:28:59,609 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 14:28:59,631 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 14:28:59,665 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 14:28:59,665 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 14:28:59,665 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 14:28:59,666 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 14:28:59,666 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 14:28:59,666 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 14:28:59,666 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 14:28:59,666 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 14:28:59,690 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-25 14:28:59,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-09-25 14:28:59,698 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:28:59,699 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:28:59,700 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:28:59,706 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:28:59,707 INFO L82 PathProgramCache]: Analyzing trace with hash -2064988448, now seen corresponding path program 1 times [2020-09-25 14:28:59,716 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:28:59,717 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1552599908] [2020-09-25 14:28:59,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:28:59,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:28:59,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:28:59,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:28:59,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-25 14:28:59,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:28:59,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 14:28:59,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:28:59,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:28:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:28:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:28:59,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 14:28:59,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 14:29:00,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:00,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:00,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:00,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,042 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:00,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:00,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:29:00,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:00,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,115 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 14:29:00,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1552599908] [2020-09-25 14:29:00,119 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:00,119 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:29:00,121 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [187079262] [2020-09-25 14:29:00,127 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:29:00,128 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:00,146 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:29:00,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:29:00,149 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-25 14:29:00,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:00,280 INFO L93 Difference]: Finished difference Result 48 states and 54 transitions. [2020-09-25 14:29:00,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:29:00,283 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 18 [2020-09-25 14:29:00,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:00,301 INFO L225 Difference]: With dead ends: 48 [2020-09-25 14:29:00,301 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 14:29:00,306 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:29:00,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 14:29:00,370 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-25 14:29:00,372 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 14:29:00,374 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 14:29:00,377 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 18 [2020-09-25 14:29:00,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:00,378 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 14:29:00,378 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:29:00,378 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 14:29:00,381 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 14:29:00,381 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:00,382 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:00,382 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 14:29:00,383 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:00,383 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:00,383 INFO L82 PathProgramCache]: Analyzing trace with hash -1678486471, now seen corresponding path program 1 times [2020-09-25 14:29:00,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:00,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [409325498] [2020-09-25 14:29:00,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:00,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 14:29:00,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,582 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 171 [2020-09-25 14:29:00,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:29:00,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 14:29:00,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:00,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:00,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:00,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,606 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:00,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:00,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,649 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:00,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:00,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:00,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 14:29:00,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:00,650 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:00,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:00,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:00,673 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 14:29:00,674 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [409325498] [2020-09-25 14:29:00,674 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 14:29:00,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 14:29:00,675 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541743522] [2020-09-25 14:29:00,677 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 14:29:00,677 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:00,677 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 14:29:00,678 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 14:29:00,678 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 5 states. [2020-09-25 14:29:00,747 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:00,747 INFO L93 Difference]: Finished difference Result 38 states and 43 transitions. [2020-09-25 14:29:00,748 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 14:29:00,748 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 19 [2020-09-25 14:29:00,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:00,749 INFO L225 Difference]: With dead ends: 38 [2020-09-25 14:29:00,750 INFO L226 Difference]: Without dead ends: 32 [2020-09-25 14:29:00,751 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 14:29:00,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-25 14:29:00,758 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-25 14:29:00,758 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-25 14:29:00,760 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-25 14:29:00,760 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 19 [2020-09-25 14:29:00,761 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:00,761 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-25 14:29:00,761 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 14:29:00,761 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-25 14:29:00,763 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 14:29:00,763 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:00,763 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 14:29:00,764 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 14:29:00,764 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:00,764 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:00,765 INFO L82 PathProgramCache]: Analyzing trace with hash 961212118, now seen corresponding path program 1 times [2020-09-25 14:29:00,765 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:00,765 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [525818234] [2020-09-25 14:29:00,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:00,781 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:00,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 14:29:01,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 14:29:01,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 609 [2020-09-25 14:29:01,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,400 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:01,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:29:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 14:29:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:01,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:01,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,428 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,428 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:01,428 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:01,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:01,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:01,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:01,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:29:01,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:01,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-09-25 14:29:01,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,560 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:29:01,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,597 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:01,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:01,609 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:01,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:29:01,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,610 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:01,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:01,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:29:01,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:01,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:01,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:01,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:01,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:01,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:01,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:01,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:01,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:01,656 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:29:01,657 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [525818234] [2020-09-25 14:29:01,657 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:01,657 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:29:01,658 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1778972549] [2020-09-25 14:29:01,658 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:01,659 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:01,659 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:01,659 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:01,660 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-25 14:29:01,776 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:01,776 INFO L93 Difference]: Finished difference Result 68 states and 85 transitions. [2020-09-25 14:29:01,777 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:29:01,777 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 14:29:01,778 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:01,779 INFO L225 Difference]: With dead ends: 68 [2020-09-25 14:29:01,779 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 14:29:01,781 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:01,781 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 14:29:01,788 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 40. [2020-09-25 14:29:01,789 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 14:29:01,790 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 14:29:01,791 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 35 [2020-09-25 14:29:01,792 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:01,792 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 14:29:01,792 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:01,792 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 14:29:01,794 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 14:29:01,794 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:01,795 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 14:29:01,795 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 14:29:01,795 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:01,796 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:01,796 INFO L82 PathProgramCache]: Analyzing trace with hash -125795935, now seen corresponding path program 1 times [2020-09-25 14:29:01,796 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:01,796 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1690045523] [2020-09-25 14:29:01,797 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:01,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:01,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:01,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 14:29:02,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 380 [2020-09-25 14:29:02,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,190 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-09-25 14:29:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 14:29:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:02,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:02,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,210 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:02,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,213 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:02,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:02,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:02,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 14:29:02,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,564 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:02,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 14:29:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:02,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:02,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 14:29:02,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,660 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:02,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:02,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:29:02,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:02,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:02,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:02,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:02,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:02,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:02,717 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:02,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:02,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:02,727 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 14:29:02,728 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1690045523] [2020-09-25 14:29:02,729 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:02,729 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:29:02,729 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1990716715] [2020-09-25 14:29:02,730 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:02,730 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:02,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:02,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:02,732 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-25 14:29:02,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:02,897 INFO L93 Difference]: Finished difference Result 56 states and 69 transitions. [2020-09-25 14:29:02,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 14:29:02,898 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-25 14:29:02,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:02,902 INFO L225 Difference]: With dead ends: 56 [2020-09-25 14:29:02,903 INFO L226 Difference]: Without dead ends: 50 [2020-09-25 14:29:02,904 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-25 14:29:02,905 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-25 14:29:02,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 44. [2020-09-25 14:29:02,919 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 14:29:02,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 55 transitions. [2020-09-25 14:29:02,923 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 55 transitions. Word has length 36 [2020-09-25 14:29:02,923 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:02,923 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 55 transitions. [2020-09-25 14:29:02,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:02,924 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 55 transitions. [2020-09-25 14:29:02,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 14:29:02,929 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:02,932 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:02,932 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 14:29:02,933 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:02,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:02,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1801616585, now seen corresponding path program 2 times [2020-09-25 14:29:02,933 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:02,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467551333] [2020-09-25 14:29:02,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:02,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:02,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:03,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:05,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:05,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:07,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:07,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 14:29:07,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 14:29:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:29:07,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:07,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 14:29:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:29:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 14:29:07,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:07,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:07,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:07,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:07,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:07,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:07,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:07,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:07,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:07,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:07,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:07,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:07,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:08,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:08,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:10,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:11,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-09-25 14:29:13,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 14:29:13,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:29:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:29:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:29:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 14:29:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:13,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:13,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:29:13,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:13,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 14:29:13,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,094 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:13,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:13,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:29:13,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:13,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:13,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:13,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:29:13,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,133 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:13,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:13,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:13,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:29:13,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:13,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:13,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:13,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 14:29:13,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:13,163 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:13,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:13,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 14:29:13,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:13,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:29:13,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:13,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:13,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 14:29:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:29:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1982 [2020-09-25 14:29:15,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:15,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 14:29:15,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:15,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,265 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,265 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 14:29:15,266 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:15,266 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 14:29:15,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,267 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 14:29:15,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:15,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:15,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:15,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,281 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:15,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:15,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 14:29:15,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:15,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 14:29:15,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:15,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 14:29:15,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:15,305 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:15,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:15,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 14:29:15,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:15,307 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:15,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:15,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:15,333 INFO L134 CoverageAnalysis]: Checked inductivity of 202 backedges. 54 proven. 69 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 14:29:15,333 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467551333] [2020-09-25 14:29:15,334 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:15,334 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 14:29:15,334 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1540556141] [2020-09-25 14:29:15,335 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 14:29:15,335 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:15,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 14:29:15,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 14:29:15,336 INFO L87 Difference]: Start difference. First operand 44 states and 55 transitions. Second operand 8 states. [2020-09-25 14:29:15,521 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:15,522 INFO L93 Difference]: Finished difference Result 96 states and 129 transitions. [2020-09-25 14:29:15,522 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 14:29:15,522 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 87 [2020-09-25 14:29:15,523 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:15,524 INFO L225 Difference]: With dead ends: 96 [2020-09-25 14:29:15,524 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 14:29:15,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2020-09-25 14:29:15,526 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 14:29:15,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 50. [2020-09-25 14:29:15,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 14:29:15,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 59 transitions. [2020-09-25 14:29:15,536 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 59 transitions. Word has length 87 [2020-09-25 14:29:15,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:15,536 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 59 transitions. [2020-09-25 14:29:15,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 14:29:15,537 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 59 transitions. [2020-09-25 14:29:15,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 14:29:15,538 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:15,538 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:15,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 14:29:15,539 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:15,539 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:15,539 INFO L82 PathProgramCache]: Analyzing trace with hash 4423077, now seen corresponding path program 3 times [2020-09-25 14:29:15,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:15,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281134573] [2020-09-25 14:29:15,540 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:15,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:15,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:15,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:16,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-09-25 14:29:20,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 14:29:20,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-09-25 14:29:20,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:29:20,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 14:29:20,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:20,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:20,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:20,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:20,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:20,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:20,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:20,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:20,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:22,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 14:29:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 14:29:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 14:29:25,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,604 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 14:29:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:29:25,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 14:29:25,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:25,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:25,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:25,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:25,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 14:29:25,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 14:29:25,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:25,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:25,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:25,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 14:29:25,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,809 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:25,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:29:25,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:25,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:25,820 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:25,820 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 14:29:25,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:25,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:25,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:25,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:25,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:25,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:29:25,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:25,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:25,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:26,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:28,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:28,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:28,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 14:29:28,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2513 [2020-09-25 14:29:28,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:28,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:28,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 14:29:28,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:28,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:28,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:28,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:28,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:28,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:28,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:28,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 14:29:28,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:28,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:28,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:28,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:29:28,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:28,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:28,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:28,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:28,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:28,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:28,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:28,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 14:29:28,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:28,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:28,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:28,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:28,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:28,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:29:28,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:28,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:28,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:28,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:28,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:28,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:28,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:28,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:28,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:28,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:28,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:29:28,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:28,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:28,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:28,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:28,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:28,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:29:28,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:28,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:28,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:28,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:28,495 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 58 proven. 67 refuted. 0 times theorem prover too weak. 86 trivial. 0 not checked. [2020-09-25 14:29:28,496 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281134573] [2020-09-25 14:29:28,496 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:28,496 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 14:29:28,496 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1888214883] [2020-09-25 14:29:28,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 14:29:28,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:28,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 14:29:28,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 14:29:28,498 INFO L87 Difference]: Start difference. First operand 50 states and 59 transitions. Second operand 9 states. [2020-09-25 14:29:28,843 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:28,844 INFO L93 Difference]: Finished difference Result 106 states and 145 transitions. [2020-09-25 14:29:28,844 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 14:29:28,844 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 89 [2020-09-25 14:29:28,845 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:28,848 INFO L225 Difference]: With dead ends: 106 [2020-09-25 14:29:28,848 INFO L226 Difference]: Without dead ends: 59 [2020-09-25 14:29:28,849 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=85, Invalid=187, Unknown=0, NotChecked=0, Total=272 [2020-09-25 14:29:28,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-25 14:29:28,858 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-09-25 14:29:28,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 14:29:28,859 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 63 transitions. [2020-09-25 14:29:28,859 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 63 transitions. Word has length 89 [2020-09-25 14:29:28,860 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:28,860 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 63 transitions. [2020-09-25 14:29:28,860 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 14:29:28,860 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 63 transitions. [2020-09-25 14:29:28,863 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 126 [2020-09-25 14:29:28,863 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:28,864 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:28,864 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 14:29:28,864 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:28,864 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:28,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1575340027, now seen corresponding path program 4 times [2020-09-25 14:29:28,868 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:28,868 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [344882707] [2020-09-25 14:29:28,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:28,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:28,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:28,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:29,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:30,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:31,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:33,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:33,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 158 [2020-09-25 14:29:33,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-25 14:29:33,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5009 [2020-09-25 14:29:33,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:33,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 80 [2020-09-25 14:29:33,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:29:33,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:33,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:33,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:33,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:33,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:33,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:33,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:33,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:33,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:33,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:33,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:33,927 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:33,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:33,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:33,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:34,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:34,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:36,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:36,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:36,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:36,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:36,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:38,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-25 14:29:38,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 14:29:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 14:29:38,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:38,948 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-25 14:29:38,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:29:38,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:38,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:38,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:38,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,977 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:38,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:38,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:38,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:38,983 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:38,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:38,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:38,992 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:38,992 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:38,993 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:38,993 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 14:29:38,993 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:38,993 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:38,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:38,994 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:38,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:38,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:38,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:39,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:39,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:39,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:39,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:39,004 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:39,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:39,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:39,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:29:39,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:39,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,010 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:39,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:39,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:39,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:39,011 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:39,012 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:39,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:39,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:39,014 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:29:39,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:39,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:39,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:39,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:39,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:39,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:39,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:39,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:39,024 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:29:39,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:39,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:39,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:40,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-25 14:29:40,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:29:40,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1761 [2020-09-25 14:29:40,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:40,795 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 14:29:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 14:29:40,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 14:29:40,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:40,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:40,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:40,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:40,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:41,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:41,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 14:29:41,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 14:29:41,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1175 [2020-09-25 14:29:41,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:41,988 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:41,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 14:29:41,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:41,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 14:29:41,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:42,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:42,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:42,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:42,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 14:29:42,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:42,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 14:29:42,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:42,035 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 14:29:42,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:42,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 14:29:42,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:42,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 14:29:42,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:42,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:42,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:42,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:42,048 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:42,048 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:42,048 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:42,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:42,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:42,049 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:42,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 14:29:42,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:42,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:42,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 14:29:42,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:42,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 14:29:42,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:42,056 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:42,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:42,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:42,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:42,059 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 14:29:42,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:42,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:42,078 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:42,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 14:29:42,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 14:29:42,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:42,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:42,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 14:29:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:42,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 14:29:42,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 14:29:42,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-25 14:29:42,105 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:42,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:42,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 14:29:42,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:42,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 14:29:42,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:42,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 14:29:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 14:29:42,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 14:29:42,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:42,161 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 215 proven. 12 refuted. 0 times theorem prover too weak. 256 trivial. 0 not checked. [2020-09-25 14:29:42,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [344882707] [2020-09-25 14:29:42,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 14:29:42,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 14:29:42,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34513124] [2020-09-25 14:29:42,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 14:29:42,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 14:29:42,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 14:29:42,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 14:29:42,164 INFO L87 Difference]: Start difference. First operand 53 states and 63 transitions. Second operand 7 states. [2020-09-25 14:29:42,270 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 14:29:42,270 INFO L93 Difference]: Finished difference Result 112 states and 142 transitions. [2020-09-25 14:29:42,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 14:29:42,271 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 125 [2020-09-25 14:29:42,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 14:29:42,273 INFO L225 Difference]: With dead ends: 112 [2020-09-25 14:29:42,273 INFO L226 Difference]: Without dead ends: 67 [2020-09-25 14:29:42,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-09-25 14:29:42,274 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-09-25 14:29:42,281 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 61. [2020-09-25 14:29:42,281 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 14:29:42,282 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-09-25 14:29:42,283 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 125 [2020-09-25 14:29:42,283 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 14:29:42,283 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-09-25 14:29:42,284 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 14:29:42,284 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-09-25 14:29:42,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-09-25 14:29:42,285 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 14:29:42,286 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 10, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 14:29:42,286 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 14:29:42,286 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 14:29:42,286 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 14:29:42,286 INFO L82 PathProgramCache]: Analyzing trace with hash 116203564, now seen corresponding path program 5 times [2020-09-25 14:29:42,287 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 14:29:42,287 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020885720] [2020-09-25 14:29:42,287 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 14:29:42,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:42,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:42,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:43,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:44,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:47,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:47,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 157 [2020-09-25 14:29:47,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-25 14:29:47,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5011 [2020-09-25 14:29:47,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:47,320 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:47,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 14:29:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 21 [2020-09-25 14:29:47,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 100 [2020-09-25 14:29:47,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:47,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 14:29:47,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:47,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:47,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 14:29:47,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 14:29:47,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 14:29:47,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 14:29:47,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 14:29:47,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.5 [2020-09-25 14:29:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 14:29:47,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 14:29:47,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 14:29:47,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 14:29:47,342 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 7 [2020-09-25 14:29:47,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 14:29:47,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:47,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:47,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:47,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:47,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 14:29:48,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking...