/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=HIGHLEXORDER --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-simple/fibo_2calls_15-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:57,103 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:57,107 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:57,149 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:57,149 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:57,157 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:57,159 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:57,163 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:57,165 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:57,168 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:57,169 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:57,170 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:57,170 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:57,173 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:57,176 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:57,177 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:57,179 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:57,180 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:57,182 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:57,190 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:57,192 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:57,193 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:57,194 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:57,195 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:57,199 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:57,199 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:57,199 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:57,203 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:57,203 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:57,204 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:57,205 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:57,207 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:57,208 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:57,208 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:57,209 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:57,209 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:57,211 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:57,211 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:57,212 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:57,212 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:57,213 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:57,214 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:38:57,259 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:57,259 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:57,261 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:57,261 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:57,261 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:57,262 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:57,262 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:57,262 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:57,262 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:57,263 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:57,264 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:57,264 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:57,264 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:57,264 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:57,265 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:57,265 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:57,265 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:57,265 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:57,265 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:57,266 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:57,266 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:57,266 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:57,266 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:57,266 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:57,267 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:57,267 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:57,267 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:57,267 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:57,267 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:57,268 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:38:57,687 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:57,711 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:57,715 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:57,718 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:57,718 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:57,719 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-24 22:38:57,812 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c9d46e3/138125d5634744569cba996ed7fea22e/FLAG7f4bc5bb0 [2020-09-24 22:38:58,325 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:58,326 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_15-2.c [2020-09-24 22:38:58,335 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c9d46e3/138125d5634744569cba996ed7fea22e/FLAG7f4bc5bb0 [2020-09-24 22:38:58,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/67c9d46e3/138125d5634744569cba996ed7fea22e [2020-09-24 22:38:58,688 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:58,694 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:58,696 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:58,696 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:58,700 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:58,701 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:58" (1/1) ... [2020-09-24 22:38:58,705 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:58, skipping insertion in model container [2020-09-24 22:38:58,706 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:58" (1/1) ... [2020-09-24 22:38:58,715 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:58,739 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:58,972 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:58,977 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:58,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:59,010 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:59,010 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59 WrapperNode [2020-09-24 22:38:59,010 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:59,011 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:59,011 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:59,012 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:59,025 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (1/1) ... [2020-09-24 22:38:59,025 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (1/1) ... [2020-09-24 22:38:59,030 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (1/1) ... [2020-09-24 22:38:59,031 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (1/1) ... [2020-09-24 22:38:59,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (1/1) ... [2020-09-24 22:38:59,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (1/1) ... [2020-09-24 22:38:59,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (1/1) ... [2020-09-24 22:38:59,116 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:59,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:59,117 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:59,117 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:59,118 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (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 [2020-09-24 22:38:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:59,194 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 22:38:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 22:38:59,195 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:59,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:59,196 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 22:38:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 22:38:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:59,197 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:59,419 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:59,419 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:59,424 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:59 BoogieIcfgContainer [2020-09-24 22:38:59,425 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:59,426 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:59,426 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:59,430 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:59,430 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:58" (1/3) ... [2020-09-24 22:38:59,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:59, skipping insertion in model container [2020-09-24 22:38:59,432 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:59" (2/3) ... [2020-09-24 22:38:59,432 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:59, skipping insertion in model container [2020-09-24 22:38:59,433 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:59" (3/3) ... [2020-09-24 22:38:59,435 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_15-2.c [2020-09-24 22:38:59,450 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:59,461 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:59,488 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:59,531 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:59,531 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:59,531 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:59,532 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:59,532 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:59,532 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:59,532 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:59,532 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:59,578 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 22:38:59,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:59,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:59,589 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:59,590 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:59,599 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:59,600 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 22:38:59,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:59,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-24 22:38:59,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:59,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:59,841 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:59,841 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-24 22:38:59,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:59,843 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:59,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:59,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:59,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:59,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:59,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:59,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:59,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:59,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:59,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:59,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:59,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:59,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:59,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:59,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:59,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:59,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 22:38:59,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:59,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:59,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:59,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:39:00,003 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-24 22:39:00,006 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:00,006 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:00,007 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1774416993] [2020-09-24 22:39:00,013 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:00,013 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:00,027 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:00,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:00,030 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 22:39:00,159 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:00,160 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 22:39:00,160 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:00,162 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:39:00,162 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:00,176 INFO L225 Difference]: With dead ends: 58 [2020-09-24 22:39:00,176 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:39:00,181 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 [2020-09-24 22:39:00,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:39:00,229 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:39:00,231 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:00,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:00,235 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 22:39:00,236 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:00,236 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:00,236 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:00,237 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:00,239 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:39:00,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:00,239 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:00,240 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:39:00,240 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:00,240 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:00,240 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 22:39:00,241 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:00,241 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1467435869] [2020-09-24 22:39:00,241 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:00,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:39:00,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-24 22:39:00,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:00,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:00,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:00,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:00,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:00,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:00,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:00,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:00,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:00,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:00,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,447 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:00,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 84 [2020-09-24 22:39:00,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:00,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:00,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:39:00,494 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:39:00,494 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1467435869] [2020-09-24 22:39:00,495 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:00,495 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:00,495 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1513366228] [2020-09-24 22:39:00,500 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:00,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:00,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:00,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:00,501 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 22:39:00,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:00,574 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:39:00,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:00,575 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:39:00,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:00,577 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:39:00,577 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:39:00,578 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 [2020-09-24 22:39:00,579 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:39:00,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:39:00,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:39:00,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:39:00,589 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 22:39:00,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:00,590 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:39:00,590 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:00,590 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:39:00,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:39:00,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:00,592 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:00,593 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:39:00,593 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:00,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:00,593 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 22:39:00,594 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:00,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1896469064] [2020-09-24 22:39:00,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:00,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:39:01,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:01,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 569 [2020-09-24 22:39:01,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:39:01,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:01,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:01,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:01,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,194 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:01,194 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,194 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:01,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:01,195 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:01,195 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:01,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:01,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-24 22:39:01,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:01,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:01,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:01,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:01,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:01,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:01,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:01,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:01,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:01,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:01,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:01,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:01,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:01,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:01,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:01,336 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:01,337 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1896469064] [2020-09-24 22:39:01,337 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:01,337 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:01,338 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325361762] [2020-09-24 22:39:01,338 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:01,339 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:01,339 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:01,339 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:01,339 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 22:39:01,424 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:01,424 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 22:39:01,425 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:01,425 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:39:01,425 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:01,427 INFO L225 Difference]: With dead ends: 82 [2020-09-24 22:39:01,427 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:01,429 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:01,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:01,437 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 22:39:01,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 22:39:01,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 22:39:01,439 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 22:39:01,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:01,440 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 22:39:01,440 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:01,440 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 22:39:01,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:39:01,442 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:01,442 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:01,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:39:01,443 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:01,443 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:01,444 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 22:39:01,444 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:01,444 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [177679250] [2020-09-24 22:39:01,444 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:01,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:39:01,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:01,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 376 [2020-09-24 22:39:01,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:01,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:01,832 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:01,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:01,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:01,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:01,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:01,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:01,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:01,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:01,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:01,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:02,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:02,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 294 [2020-09-24 22:39:02,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:02,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:02,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:02,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:02,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:02,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:02,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:02,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:02,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:02,244 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:02,245 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [177679250] [2020-09-24 22:39:02,245 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:02,245 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 22:39:02,246 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [140890487] [2020-09-24 22:39:02,246 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:02,247 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:02,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:02,248 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 22:39:02,362 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:02,363 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 22:39:02,363 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:02,364 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 22:39:02,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:02,365 INFO L225 Difference]: With dead ends: 56 [2020-09-24 22:39:02,366 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:39:02,366 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:02,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:39:02,373 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 22:39:02,374 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 22:39:02,375 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 22:39:02,376 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 22:39:02,376 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:02,376 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 22:39:02,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:02,376 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 22:39:02,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:39:02,378 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:02,378 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:02,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:39:02,379 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:02,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:02,379 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 22:39:02,379 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:02,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284219918] [2020-09-24 22:39:02,380 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:02,386 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,832 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:39:02,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:02,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-09-24 22:39:02,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:02,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:02,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 22:39:02,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:02,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:02,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:02,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:02,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:02,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:02,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:02,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-09-24 22:39:02,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:02,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:02,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:03,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:03,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:03,033 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:03,033 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:03,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:03,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:03,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:03,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:03,056 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:03,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:03,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:03,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-24 22:39:03,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:03,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:03,095 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:03,101 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:03,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284219918] [2020-09-24 22:39:03,102 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:03,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:39:03,103 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1121156424] [2020-09-24 22:39:03,104 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:39:03,104 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:03,105 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:39:03,105 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:39:03,105 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 5 states. [2020-09-24 22:39:03,180 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:03,180 INFO L93 Difference]: Finished difference Result 106 states and 134 transitions. [2020-09-24 22:39:03,181 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:39:03,181 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:39:03,181 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:03,182 INFO L225 Difference]: With dead ends: 106 [2020-09-24 22:39:03,183 INFO L226 Difference]: Without dead ends: 64 [2020-09-24 22:39:03,185 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:03,185 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-24 22:39:03,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 52. [2020-09-24 22:39:03,197 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:03,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 62 transitions. [2020-09-24 22:39:03,199 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 62 transitions. Word has length 35 [2020-09-24 22:39:03,199 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:03,199 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 62 transitions. [2020-09-24 22:39:03,199 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:39:03,200 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 62 transitions. [2020-09-24 22:39:03,202 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:39:03,202 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:03,202 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:03,202 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:39:03,202 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:03,203 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:03,203 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-24 22:39:03,203 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:03,203 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972298307] [2020-09-24 22:39:03,204 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:03,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:03,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:03,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:39:07,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:07,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3956 [2020-09-24 22:39:07,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-24 22:39:07,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:07,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:07,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:07,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:07,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:07,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:07,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:39:07,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:07,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:07,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-09-24 22:39:07,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-24 22:39:07,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:07,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:07,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:07,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:07,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:07,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:07,582 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:07,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:07,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 22:39:07,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:07,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:07,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:07,649 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:07,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:07,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:07,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:07,673 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:07,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:07,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:07,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:07,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:07,678 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,683 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:07,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972298307] [2020-09-24 22:39:07,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:07,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:39:07,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1171374008] [2020-09-24 22:39:07,685 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:39:07,685 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:07,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:39:07,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:39:07,686 INFO L87 Difference]: Start difference. First operand 52 states and 62 transitions. Second operand 6 states. [2020-09-24 22:39:07,754 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:07,754 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-09-24 22:39:07,755 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:07,755 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 22:39:07,755 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:07,756 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:07,757 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:07,758 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:07,758 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:07,766 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:07,766 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:07,767 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-09-24 22:39:07,767 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-09-24 22:39:07,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:07,768 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-09-24 22:39:07,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:39:07,772 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-09-24 22:39:07,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:07,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:07,777 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:07,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:07,778 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:07,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:07,778 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 1 times [2020-09-24 22:39:07,778 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:07,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [969072932] [2020-09-24 22:39:07,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:07,791 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:08,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:08,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:08,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,519 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:10,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:10,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2725 [2020-09-24 22:39:10,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:10,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:10,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:10,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:10,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:10,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:10,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:10,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:10,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:10,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 22:39:10,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:10,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:10,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:10,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 397 [2020-09-24 22:39:10,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:10,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:39:10,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:10,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:10,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:10,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:39:10,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:10,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:10,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:10,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:11,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:11,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:11,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 163 [2020-09-24 22:39:11,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:11,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:11,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:11,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:11,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:11,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:11,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:11,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:11,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:39:11,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:11,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:11,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:11,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:11,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:11,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:11,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:11,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:11,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:11,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:11,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:11,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:11,291 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 6 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 22:39:11,292 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [969072932] [2020-09-24 22:39:11,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:11,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:11,293 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339878669] [2020-09-24 22:39:11,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:11,294 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:11,294 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:11,294 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:11,294 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 9 states. [2020-09-24 22:39:11,538 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:11,538 INFO L93 Difference]: Finished difference Result 124 states and 165 transitions. [2020-09-24 22:39:11,538 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:11,539 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 22:39:11,539 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:11,540 INFO L225 Difference]: With dead ends: 124 [2020-09-24 22:39:11,540 INFO L226 Difference]: Without dead ends: 76 [2020-09-24 22:39:11,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:11,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-24 22:39:11,566 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 74. [2020-09-24 22:39:11,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 22:39:11,569 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 93 transitions. [2020-09-24 22:39:11,569 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 93 transitions. Word has length 52 [2020-09-24 22:39:11,569 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:11,570 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 93 transitions. [2020-09-24 22:39:11,572 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:11,572 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 93 transitions. [2020-09-24 22:39:11,574 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:11,574 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:11,574 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:11,576 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:11,576 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:11,577 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:11,577 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 2 times [2020-09-24 22:39:11,577 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:11,577 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1147595880] [2020-09-24 22:39:11,577 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:11,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:11,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:13,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:13,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1581 [2020-09-24 22:39:13,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:13,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:39:13,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:13,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:13,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:13,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:13,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:13,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:13,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:13,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:13,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:13,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:13,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:13,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:13,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:14,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:14,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:14,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1495 [2020-09-24 22:39:14,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:14,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:14,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:14,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:14,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:14,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:14,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:14,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:14,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:39:14,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:14,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:14,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:14,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:14,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:14,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:14,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:14,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:14,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:14,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:14,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:14,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:14,790 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:14,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:14,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,794 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:14,794 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:14,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:14,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:14,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:14,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:14,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:14,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:14,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:14,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:14,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:14,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:14,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:14,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:14,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:14,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:14,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:14,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:14,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:14,845 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 22:39:14,845 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1147595880] [2020-09-24 22:39:14,846 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:14,846 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:14,846 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [732537804] [2020-09-24 22:39:14,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:14,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:14,848 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:14,848 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:14,848 INFO L87 Difference]: Start difference. First operand 74 states and 93 transitions. Second operand 7 states. [2020-09-24 22:39:14,951 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:14,951 INFO L93 Difference]: Finished difference Result 86 states and 107 transitions. [2020-09-24 22:39:14,952 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:14,952 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:39:14,953 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:14,954 INFO L225 Difference]: With dead ends: 86 [2020-09-24 22:39:14,954 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 22:39:14,954 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:14,955 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 22:39:14,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 68. [2020-09-24 22:39:14,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:39:14,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-09-24 22:39:14,965 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 52 [2020-09-24 22:39:14,965 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:14,965 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-09-24 22:39:14,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:14,966 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-09-24 22:39:14,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:14,970 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:14,970 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:14,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:14,971 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:14,971 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:14,971 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 22:39:14,971 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:14,971 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [793595170] [2020-09-24 22:39:14,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:14,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:17,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:17,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:19,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:39:19,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:39:19,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:19,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:19,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:20,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:20,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:20,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:20,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:20,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:20,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:20,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:20,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:20,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:39:25,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:25,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:25,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:25,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:25,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:25,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:25,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:25,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-09-24 22:39:25,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:25,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:25,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:25,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:25,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:25,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:25,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 22:39:25,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:25,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:25,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:25,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:25,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:25,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:25,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:25,308 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,326 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:25,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:25,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:25,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-24 22:39:25,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:25,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:25,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:25,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:25,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-24 22:39:25,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:25,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:25,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,629 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:25,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:25,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:25,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:25,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,664 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 19 proven. 21 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-24 22:39:25,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [793595170] [2020-09-24 22:39:25,670 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:25,670 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:39:25,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1441532194] [2020-09-24 22:39:25,671 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:39:25,671 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:25,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:39:25,672 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:25,672 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 11 states. [2020-09-24 22:39:25,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:25,984 INFO L93 Difference]: Finished difference Result 160 states and 234 transitions. [2020-09-24 22:39:25,985 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-24 22:39:25,985 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 69 [2020-09-24 22:39:25,986 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:25,987 INFO L225 Difference]: With dead ends: 160 [2020-09-24 22:39:25,987 INFO L226 Difference]: Without dead ends: 91 [2020-09-24 22:39:25,988 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=63, Invalid=243, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:39:25,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-24 22:39:25,995 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 65. [2020-09-24 22:39:25,996 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-09-24 22:39:25,996 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 78 transitions. [2020-09-24 22:39:25,997 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 78 transitions. Word has length 69 [2020-09-24 22:39:25,997 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:25,997 INFO L479 AbstractCegarLoop]: Abstraction has 65 states and 78 transitions. [2020-09-24 22:39:25,997 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:39:25,998 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 78 transitions. [2020-09-24 22:39:25,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-24 22:39:25,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:25,999 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:25,999 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:25,999 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:25,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:25,999 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-24 22:39:26,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:26,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112483044] [2020-09-24 22:39:26,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:26,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-24 22:39:31,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-24 22:39:31,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:31,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-24 22:39:31,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:31,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:31,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:31,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:31,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:31,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:31,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-24 22:39:36,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:39:36,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:39:36,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-24 22:39:36,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:36,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:36,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:36,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:36,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:36,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:36,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:36,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 22:39:36,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:36,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:36,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-24 22:39:36,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:36,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:36,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,291 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:39:36,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:36,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:36,327 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:36,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-24 22:39:36,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:36,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:36,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,353 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 22:39:36,353 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112483044] [2020-09-24 22:39:36,353 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:36,353 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:36,354 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [246802395] [2020-09-24 22:39:36,354 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:36,354 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:36,354 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:36,355 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:36,355 INFO L87 Difference]: Start difference. First operand 65 states and 78 transitions. Second operand 9 states. [2020-09-24 22:39:36,501 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:36,501 INFO L93 Difference]: Finished difference Result 137 states and 179 transitions. [2020-09-24 22:39:36,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:36,503 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 71 [2020-09-24 22:39:36,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:36,504 INFO L225 Difference]: With dead ends: 137 [2020-09-24 22:39:36,504 INFO L226 Difference]: Without dead ends: 77 [2020-09-24 22:39:36,505 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:36,505 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-24 22:39:36,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-24 22:39:36,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-24 22:39:36,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 86 transitions. [2020-09-24 22:39:36,512 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 86 transitions. Word has length 71 [2020-09-24 22:39:36,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:36,513 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 86 transitions. [2020-09-24 22:39:36,513 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:36,513 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 86 transitions. [2020-09-24 22:39:36,514 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-24 22:39:36,514 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:36,514 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:36,515 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:39:36,515 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:36,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:36,517 INFO L82 PathProgramCache]: Analyzing trace with hash 2033462690, now seen corresponding path program 1 times [2020-09-24 22:39:36,517 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:36,517 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [209543210] [2020-09-24 22:39:36,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:36,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,528 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-24 22:39:41,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:41,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:41,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,541 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:41,542 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:41,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:41,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:41,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-24 22:39:46,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-24 22:39:46,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:46,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 66 [2020-09-24 22:39:46,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:46,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:46,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:46,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:46,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,609 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:46,609 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:46,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:46,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,616 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:46,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,621 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:46,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:46,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:46,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,269 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:47,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:47,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 639 [2020-09-24 22:39:47,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:47,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:47,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:47,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:47,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,498 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:47,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:47,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-09-24 22:39:47,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:47,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:47,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:47,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:47,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:47,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:47,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:47,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:47,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:47,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:47,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:47,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:47,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:47,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:47,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,602 INFO L134 CoverageAnalysis]: Checked inductivity of 142 backedges. 73 proven. 6 refuted. 0 times theorem prover too weak. 63 trivial. 0 not checked. [2020-09-24 22:39:47,602 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [209543210] [2020-09-24 22:39:47,603 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:47,603 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:47,603 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1385563840] [2020-09-24 22:39:47,603 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:47,604 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:47,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:47,604 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:47,604 INFO L87 Difference]: Start difference. First operand 71 states and 86 transitions. Second operand 9 states. [2020-09-24 22:39:47,821 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:47,821 INFO L93 Difference]: Finished difference Result 150 states and 197 transitions. [2020-09-24 22:39:47,822 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:47,822 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 104 [2020-09-24 22:39:47,823 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:47,824 INFO L225 Difference]: With dead ends: 150 [2020-09-24 22:39:47,824 INFO L226 Difference]: Without dead ends: 85 [2020-09-24 22:39:47,825 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=142, Unknown=0, NotChecked=0, Total=182 [2020-09-24 22:39:47,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 85 states. [2020-09-24 22:39:47,830 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 85 to 79. [2020-09-24 22:39:47,831 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-24 22:39:47,832 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 99 transitions. [2020-09-24 22:39:47,832 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 99 transitions. Word has length 104 [2020-09-24 22:39:47,835 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:47,835 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 99 transitions. [2020-09-24 22:39:47,835 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:47,835 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 99 transitions. [2020-09-24 22:39:47,836 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:47,836 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:47,837 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:47,837 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 22:39:47,837 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:47,837 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:47,837 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 2 times [2020-09-24 22:39:47,838 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:47,838 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1410857800] [2020-09-24 22:39:47,838 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:47,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:49,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:52,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:39:52,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:52,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:39:52,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:52,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:52,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 22:39:52,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:52,862 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:52,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:52,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:52,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:52,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:52,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:52,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:52,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:52,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:52,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:52,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:53,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking...