/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=WIDEST --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_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:17,122 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:17,126 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:17,175 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:17,176 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:17,186 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:17,188 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:17,193 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:17,196 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:17,198 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:17,199 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:17,201 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:17,201 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:17,204 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:17,208 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:17,210 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:17,212 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:17,215 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:17,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:17,224 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:17,228 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:17,229 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:17,231 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:17,232 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:17,237 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:17,237 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:17,238 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:17,241 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:17,241 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:17,244 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:17,244 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:17,245 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:17,246 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:17,247 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:17,248 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:17,248 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:17,249 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:17,249 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:17,250 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:17,251 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:17,252 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:17,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:10:17,307 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:17,307 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:17,309 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:17,309 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:17,310 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:17,310 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:17,310 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:17,311 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:17,311 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:17,311 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:17,312 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:17,312 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:17,313 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:17,313 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:17,313 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:17,314 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:17,314 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:17,314 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:17,314 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:17,315 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:17,315 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:17,315 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:17,315 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:17,315 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:17,316 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:17,316 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:17,316 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:17,316 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:17,316 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:17,317 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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;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=WIDEST;log-additional-information=true; [2020-09-25 03:10:17,733 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:17,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:17,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:17,766 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:17,766 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:17,767 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 03:10:17,860 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7803db6be/28b896c84d3842ac88f83167b5340e55/FLAG9ebe7a3e2 [2020-09-25 03:10:18,428 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:18,429 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-25 03:10:18,438 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7803db6be/28b896c84d3842ac88f83167b5340e55/FLAG9ebe7a3e2 [2020-09-25 03:10:18,760 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7803db6be/28b896c84d3842ac88f83167b5340e55 [2020-09-25 03:10:18,776 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:18,783 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:18,784 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:18,784 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:18,789 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:18,790 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,794 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 25.09 03:10:18, skipping insertion in model container [2020-09-25 03:10:18,795 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:18" (1/1) ... [2020-09-25 03:10:18,804 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:18,832 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:19,045 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:19,051 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:19,072 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:19,088 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:19,089 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19 WrapperNode [2020-09-25 03:10:19,089 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:19,090 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:19,090 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:19,090 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:19,104 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... [2020-09-25 03:10:19,104 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... [2020-09-25 03:10:19,188 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... [2020-09-25 03:10:19,188 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... [2020-09-25 03:10:19,193 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... [2020-09-25 03:10:19,196 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... [2020-09-25 03:10:19,197 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... [2020-09-25 03:10:19,199 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:19,199 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:19,199 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:19,199 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:19,201 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:19,285 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:19,286 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:19,286 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 03:10:19,286 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 03:10:19,286 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 03:10:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 03:10:19,287 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:19,288 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:19,529 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:19,530 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:19,535 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:19 BoogieIcfgContainer [2020-09-25 03:10:19,536 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:19,538 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:19,538 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:19,544 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:19,545 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:18" (1/3) ... [2020-09-25 03:10:19,546 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 25.09 03:10:19, skipping insertion in model container [2020-09-25 03:10:19,546 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:19" (2/3) ... [2020-09-25 03:10:19,547 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 25.09 03:10:19, skipping insertion in model container [2020-09-25 03:10:19,547 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:19" (3/3) ... [2020-09-25 03:10:19,549 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-09-25 03:10:19,563 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:19,576 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:19,629 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:19,684 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:19,685 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:19,685 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:19,685 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:19,685 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:19,686 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:19,686 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:19,686 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:19,706 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 03:10:19,714 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:19,714 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:19,715 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:19,716 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:19,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:19,723 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 03:10:19,732 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:19,732 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-25 03:10:19,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:19,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:19,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:19,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:20,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:20,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 03:10:20,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:10:20,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:20,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:10:20,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:20,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:20,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:20,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:20,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:20,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:20,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:20,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:20,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:20,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:20,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 03:10:20,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:20,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:20,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:20,218 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:20,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-25 03:10:20,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:20,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:20,224 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717157823] [2020-09-25 03:10:20,230 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:20,231 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:20,248 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:20,250 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:20,252 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 03:10:20,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:20,346 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 03:10:20,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:20,349 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:20,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:20,363 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:10:20,363 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 03:10:20,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:20,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 03:10:20,420 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 03:10:20,421 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:20,424 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:20,426 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 03:10:20,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:20,427 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:20,427 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:20,427 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:20,430 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:20,430 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:20,430 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:20,431 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:20,431 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:20,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:20,432 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 03:10:20,432 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:20,432 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105747770] [2020-09-25 03:10:20,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:20,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,597 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:20,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-09-25 03:10:20,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:10:20,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:20,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:10:20,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:20,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:20,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:20,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:20,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:20,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:20,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:20,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:20,659 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:20,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:20,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:20,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 03:10:20,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:20,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:20,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:20,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:20,723 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:10:20,724 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105747770] [2020-09-25 03:10:20,724 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:20,724 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:20,725 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749514268] [2020-09-25 03:10:20,727 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:20,727 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:20,727 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:20,727 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:20,728 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 03:10:20,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:20,784 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 03:10:20,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:20,784 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:20,785 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:20,786 INFO L225 Difference]: With dead ends: 50 [2020-09-25 03:10:20,786 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 03:10:20,788 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:20,789 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 03:10:20,797 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 03:10:20,797 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 03:10:20,799 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 03:10:20,799 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 03:10:20,800 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:20,800 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 03:10:20,800 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:20,800 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 03:10:20,802 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:20,802 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:20,803 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] [2020-09-25 03:10:20,803 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:20,803 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:20,804 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:20,804 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 03:10:20,804 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:20,804 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891309029] [2020-09-25 03:10:20,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:20,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:20,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:20,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:21,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:22,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:22,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:22,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2102 [2020-09-25 03:10:22,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:22,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:22,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:22,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:22,952 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:22,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:22,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:22,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:22,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:22,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:22,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:22,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:22,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:22,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:22,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:22,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:22,974 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:22,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:23,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 338 [2020-09-25 03:10:23,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:23,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:10:23,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:23,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:23,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:23,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:23,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 03:10:23,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:23,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:23,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:23,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:23,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:23,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:23,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:23,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:23,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:10:23,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:23,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:23,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:23,452 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-25 03:10:23,456 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891309029] [2020-09-25 03:10:23,456 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:23,457 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:23,457 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [502675572] [2020-09-25 03:10:23,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:23,459 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:23,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:23,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:23,460 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-25 03:10:23,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:23,668 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 03:10:23,671 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:10:23,671 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-25 03:10:23,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:23,675 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:10:23,676 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:10:23,679 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:23,680 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:10:23,699 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 03:10:23,699 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:23,703 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:23,703 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 03:10:23,704 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:23,704 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:23,704 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:23,704 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:23,710 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:23,710 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:23,711 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] [2020-09-25 03:10:23,711 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:23,711 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:23,712 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:23,712 INFO L82 PathProgramCache]: Analyzing trace with hash -159162515, now seen corresponding path program 1 times [2020-09-25 03:10:23,712 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:23,712 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1849095445] [2020-09-25 03:10:23,713 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:23,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:23,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:23,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:24,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:27,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:27,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:27,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3420 [2020-09-25 03:10:27,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:27,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:27,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:27,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:27,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:27,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:27,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:27,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:27,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:27,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:27,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:27,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:27,195 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:27,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:27,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:28,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:28,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 939 [2020-09-25 03:10:28,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:28,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:28,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:28,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:28,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:28,201 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:28,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:28,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:28,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:28,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:28,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:28,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:28,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:28,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:28,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:28,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:10:28,236 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:28,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:28,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:28,256 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 03:10:28,257 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1849095445] [2020-09-25 03:10:28,257 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:28,258 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:28,258 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1567655402] [2020-09-25 03:10:28,258 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:28,259 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:28,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:28,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:28,260 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 9 states. [2020-09-25 03:10:28,396 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:28,397 INFO L93 Difference]: Finished difference Result 68 states and 81 transitions. [2020-09-25 03:10:28,397 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 03:10:28,398 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 03:10:28,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:28,400 INFO L225 Difference]: With dead ends: 68 [2020-09-25 03:10:28,400 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 03:10:28,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=122, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:28,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 03:10:28,410 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-09-25 03:10:28,410 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 03:10:28,412 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 03:10:28,412 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 34 [2020-09-25 03:10:28,412 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:28,413 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 03:10:28,413 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:28,413 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 03:10:28,414 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:28,415 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:28,415 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] [2020-09-25 03:10:28,415 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:28,415 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:28,416 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:28,416 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 2 times [2020-09-25 03:10:28,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:28,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [216383043] [2020-09-25 03:10:28,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:28,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:28,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,314 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,314 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:29,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 889 [2020-09-25 03:10:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:29,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:29,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:29,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:29,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:29,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:29,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:29,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:29,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 228 [2020-09-25 03:10:29,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:29,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:29,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:29,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:29,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:29,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:29,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:29,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:29,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:29,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:29,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:29,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:29,618 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:29,618 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:29,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:29,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:29,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:29,641 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 03:10:29,641 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [216383043] [2020-09-25 03:10:29,642 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:29,642 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:10:29,642 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2130389807] [2020-09-25 03:10:29,643 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:29,643 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:29,643 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:29,643 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:29,644 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 03:10:29,757 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:29,757 INFO L93 Difference]: Finished difference Result 64 states and 77 transitions. [2020-09-25 03:10:29,758 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:10:29,758 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-25 03:10:29,758 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:29,760 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:10:29,760 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:10:29,761 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 [2020-09-25 03:10:29,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:10:29,768 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 50. [2020-09-25 03:10:29,768 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 03:10:29,769 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 03:10:29,770 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 34 [2020-09-25 03:10:29,770 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:29,770 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 03:10:29,771 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:29,771 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 03:10:29,772 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:29,772 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:29,773 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] [2020-09-25 03:10:29,773 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:29,773 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:29,773 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:29,774 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 03:10:29,774 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:29,774 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1020819210] [2020-09-25 03:10:29,774 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:29,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:29,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:29,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:30,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:10:31,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:10:31,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1579 [2020-09-25 03:10:31,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:31,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:31,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:31,379 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:31,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:31,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,384 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:31,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:31,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:31,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:31,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:31,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:10:31,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 460 [2020-09-25 03:10:31,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:31,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:31,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:31,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:31,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:31,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:31,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:31,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:31,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:31,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:10:31,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:31,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:31,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:31,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:31,940 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-25 03:10:31,940 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1020819210] [2020-09-25 03:10:31,941 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:31,941 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-25 03:10:31,941 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [744270386] [2020-09-25 03:10:31,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:10:31,942 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:31,942 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:10:31,942 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:31,943 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 8 states. [2020-09-25 03:10:32,046 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:32,046 INFO L93 Difference]: Finished difference Result 80 states and 97 transitions. [2020-09-25 03:10:32,046 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 03:10:32,046 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:10:32,047 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:32,048 INFO L225 Difference]: With dead ends: 80 [2020-09-25 03:10:32,049 INFO L226 Difference]: Without dead ends: 74 [2020-09-25 03:10:32,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:32,050 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-09-25 03:10:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 54. [2020-09-25 03:10:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:10:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-25 03:10:32,059 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 35 [2020-09-25 03:10:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:32,060 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-25 03:10:32,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:10:32,060 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-25 03:10:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:10:32,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:32,062 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] [2020-09-25 03:10:32,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:10:32,063 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash -2026330267, now seen corresponding path program 1 times [2020-09-25 03:10:32,063 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:32,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [614600937] [2020-09-25 03:10:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:32,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:32,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:32,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:34,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:10:37,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:37,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:10:37,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:37,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:10:37,072 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:37,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:37,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:37,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:37,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:37,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:37,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:37,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:37,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:37,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:37,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:37,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:37,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:10:38,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:38,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1587 [2020-09-25 03:10:38,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:38,702 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:10:38,703 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:38,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:38,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:38,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:38,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:10:38,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:38,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:38,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:38,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:38,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:38,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:38,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:38,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:38,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:38,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 03:10:38,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:38,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:38,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:38,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:39,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:39,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:39,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,024 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:39,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:39,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:39,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:39,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:39,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:39,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:39,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:39,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:39,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:39,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:39,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:39,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:39,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:39,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:39,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:39,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:39,069 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:10:39,069 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [614600937] [2020-09-25 03:10:39,069 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:39,070 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:10:39,070 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [182739910] [2020-09-25 03:10:39,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:10:39,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:39,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:10:39,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:10:39,073 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 12 states. [2020-09-25 03:10:39,283 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:39,284 INFO L93 Difference]: Finished difference Result 96 states and 126 transitions. [2020-09-25 03:10:39,284 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:10:39,284 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-09-25 03:10:39,285 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:39,288 INFO L225 Difference]: With dead ends: 96 [2020-09-25 03:10:39,288 INFO L226 Difference]: Without dead ends: 90 [2020-09-25 03:10:39,291 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=59, Invalid=283, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:10:39,291 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-09-25 03:10:39,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 66. [2020-09-25 03:10:39,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 03:10:39,316 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 92 transitions. [2020-09-25 03:10:39,316 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 92 transitions. Word has length 51 [2020-09-25 03:10:39,316 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:39,317 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 92 transitions. [2020-09-25 03:10:39,320 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:10:39,320 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 92 transitions. [2020-09-25 03:10:39,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:39,322 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:39,322 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] [2020-09-25 03:10:39,323 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:10:39,323 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:39,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:39,323 INFO L82 PathProgramCache]: Analyzing trace with hash -991775051, now seen corresponding path program 1 times [2020-09-25 03:10:39,323 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:39,327 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1624207942] [2020-09-25 03:10:39,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:39,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:39,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:39,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:40,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:41,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,334 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:44,334 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:10:44,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:44,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:10:44,335 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:44,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:10:44,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:44,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:44,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:44,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:44,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:44,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:44,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:44,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:44,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:44,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:44,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:44,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:44,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:44,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:47,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:47,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:47,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3544 [2020-09-25 03:10:47,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:47,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:47,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:47,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:47,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:47,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:47,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:47,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:47,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:47,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:10:47,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:47,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:47,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:47,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:47,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:47,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:48,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:48,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 515 [2020-09-25 03:10:48,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:48,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:48,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:48,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:48,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:48,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:48,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:48,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:48,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:48,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:48,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:48,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:48,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:48,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:10:48,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:48,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:48,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:48,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:48,640 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:10:48,640 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1624207942] [2020-09-25 03:10:48,641 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:48,641 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:10:48,641 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1085353599] [2020-09-25 03:10:48,642 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:10:48,642 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:48,642 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:10:48,642 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:48,642 INFO L87 Difference]: Start difference. First operand 66 states and 92 transitions. Second operand 13 states. [2020-09-25 03:10:48,827 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:48,827 INFO L93 Difference]: Finished difference Result 100 states and 136 transitions. [2020-09-25 03:10:48,828 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:10:48,828 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 03:10:48,828 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:48,830 INFO L225 Difference]: With dead ends: 100 [2020-09-25 03:10:48,830 INFO L226 Difference]: Without dead ends: 94 [2020-09-25 03:10:48,831 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:10:48,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-25 03:10:48,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 74. [2020-09-25 03:10:48,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 03:10:48,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 106 transitions. [2020-09-25 03:10:48,841 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 106 transitions. Word has length 52 [2020-09-25 03:10:48,842 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:48,842 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 106 transitions. [2020-09-25 03:10:48,842 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:10:48,842 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 106 transitions. [2020-09-25 03:10:48,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:10:48,844 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:48,844 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] [2020-09-25 03:10:48,844 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:10:48,844 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:48,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:48,845 INFO L82 PathProgramCache]: Analyzing trace with hash -945821099, now seen corresponding path program 2 times [2020-09-25 03:10:48,845 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:48,845 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [595159886] [2020-09-25 03:10:48,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:48,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:48,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:48,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:10:53,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:10:53,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 03:10:53,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:10:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:10:53,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:10:53,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:53,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:53,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:53,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:53,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:53,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,635 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 759 [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:10:54,636 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:54,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:54,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:54,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:54,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:54,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-09-25 03:10:54,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:54,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:54,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:54,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:54,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:54,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:54,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:54,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:54,876 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:54,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:54,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:54,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:10:54,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:54,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:54,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:54,899 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 6 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 03:10:54,900 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [595159886] [2020-09-25 03:10:54,900 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:54,900 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 03:10:54,900 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2120845] [2020-09-25 03:10:54,902 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 03:10:54,902 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:54,902 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 03:10:54,903 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=128, Unknown=0, NotChecked=0, Total=156 [2020-09-25 03:10:54,903 INFO L87 Difference]: Start difference. First operand 74 states and 106 transitions. Second operand 13 states. [2020-09-25 03:10:55,109 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:55,109 INFO L93 Difference]: Finished difference Result 114 states and 166 transitions. [2020-09-25 03:10:55,111 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 03:10:55,111 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 52 [2020-09-25 03:10:55,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:55,113 INFO L225 Difference]: With dead ends: 114 [2020-09-25 03:10:55,114 INFO L226 Difference]: Without dead ends: 108 [2020-09-25 03:10:55,114 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=57, Invalid=285, Unknown=0, NotChecked=0, Total=342 [2020-09-25 03:10:55,115 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2020-09-25 03:10:55,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 76. [2020-09-25 03:10:55,134 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 03:10:55,137 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 112 transitions. [2020-09-25 03:10:55,139 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 112 transitions. Word has length 52 [2020-09-25 03:10:55,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:55,139 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 112 transitions. [2020-09-25 03:10:55,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 03:10:55,139 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 112 transitions. [2020-09-25 03:10:55,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:10:55,141 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:55,141 INFO L422 BasicCegarLoop]: trace histogram [3, 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] [2020-09-25 03:10:55,141 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:10:55,141 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:55,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:55,142 INFO L82 PathProgramCache]: Analyzing trace with hash -1855729211, now seen corresponding path program 1 times [2020-09-25 03:10:55,142 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:55,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [258137443] [2020-09-25 03:10:55,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:55,148 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:55,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:55,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:00,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:11:00,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:11:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:00,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:00,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:11:00,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:00,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:00,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:00,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:00,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:00,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:00,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:00,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:00,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:00,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:00,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:00,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:00,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:00,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:03,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:11:03,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:03,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3606 [2020-09-25 03:11:03,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:03,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:03,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:03,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:03,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:03,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:03,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:03,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:03,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:03,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:03,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:03,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:03,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:03,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:03,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:03,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:11:04,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:04,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 335 [2020-09-25 03:11:04,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:04,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:04,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:04,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:04,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:04,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:04,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:04,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:04,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:04,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:04,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:11:04,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:04,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:04,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:04,276 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 03:11:04,277 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [258137443] [2020-09-25 03:11:04,277 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:04,277 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:11:04,278 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979207376] [2020-09-25 03:11:04,278 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:11:04,278 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:04,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:11:04,280 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:11:04,280 INFO L87 Difference]: Start difference. First operand 76 states and 112 transitions. Second operand 12 states. [2020-09-25 03:11:04,477 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:04,477 INFO L93 Difference]: Finished difference Result 116 states and 162 transitions. [2020-09-25 03:11:04,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:11:04,478 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 03:11:04,478 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:04,480 INFO L225 Difference]: With dead ends: 116 [2020-09-25 03:11:04,480 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 03:11:04,480 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=223, Unknown=0, NotChecked=0, Total=272 [2020-09-25 03:11:04,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 03:11:04,489 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 74. [2020-09-25 03:11:04,489 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-25 03:11:04,491 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 106 transitions. [2020-09-25 03:11:04,491 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 106 transitions. Word has length 53 [2020-09-25 03:11:04,491 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:04,491 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 106 transitions. [2020-09-25 03:11:04,491 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:11:04,492 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 106 transitions. [2020-09-25 03:11:04,493 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 03:11:04,493 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:04,493 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:04,493 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:11:04,493 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:04,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:04,494 INFO L82 PathProgramCache]: Analyzing trace with hash 698933285, now seen corresponding path program 1 times [2020-09-25 03:11:04,494 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:04,494 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519538016] [2020-09-25 03:11:04,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:09,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 03:11:09,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:11:09,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:11:09,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:11:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:09,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:11:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:09,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:09,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:09,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:09,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:09,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:09,520 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:14,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 03:11:14,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 03:11:14,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:11:14,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:14,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 03:11:14,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:14,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:14,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:14,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:14,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:14,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:14,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:11:14,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:14,559 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:11:14,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:14,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:14,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:14,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:14,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:11:15,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:11:15,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1024 [2020-09-25 03:11:15,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:11:15,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:15,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:15,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:15,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:15,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:15,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:15,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:15,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:15,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:15,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:11:15,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:15,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:15,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:15,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:15,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:15,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:15,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:15,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:15,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:15,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:15,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:15,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:15,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:15,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:15,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:15,669 INFO L134 CoverageAnalysis]: Checked inductivity of 48 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 03:11:15,669 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519538016] [2020-09-25 03:11:15,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:15,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 03:11:15,670 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [296968033] [2020-09-25 03:11:15,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:11:15,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:15,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:11:15,670 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:11:15,671 INFO L87 Difference]: Start difference. First operand 74 states and 106 transitions. Second operand 7 states. [2020-09-25 03:11:15,799 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:15,799 INFO L93 Difference]: Finished difference Result 92 states and 128 transitions. [2020-09-25 03:11:15,802 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:11:15,802 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 69 [2020-09-25 03:11:15,803 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:15,804 INFO L225 Difference]: With dead ends: 92 [2020-09-25 03:11:15,804 INFO L226 Difference]: Without dead ends: 86 [2020-09-25 03:11:15,805 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:11:15,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-25 03:11:15,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 66. [2020-09-25 03:11:15,822 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 03:11:15,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 90 transitions. [2020-09-25 03:11:15,823 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 90 transitions. Word has length 69 [2020-09-25 03:11:15,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:15,824 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 90 transitions. [2020-09-25 03:11:15,824 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:11:15,824 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 90 transitions. [2020-09-25 03:11:15,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:11:15,825 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:15,825 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] [2020-09-25 03:11:15,825 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:11:15,825 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:15,830 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:15,830 INFO L82 PathProgramCache]: Analyzing trace with hash 586032133, now seen corresponding path program 3 times [2020-09-25 03:11:15,830 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:15,831 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790222858] [2020-09-25 03:11:15,831 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:15,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:15,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:15,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking...