/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_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:10:47,101 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:10:47,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:10:47,131 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:10:47,132 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:10:47,133 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:10:47,135 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:10:47,137 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:10:47,138 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:10:47,139 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:10:47,140 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:10:47,142 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:10:47,142 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:10:47,143 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:10:47,144 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:10:47,146 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:10:47,147 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:10:47,148 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:10:47,149 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:10:47,151 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:10:47,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:10:47,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:10:47,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:10:47,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:10:47,159 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:10:47,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:10:47,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:10:47,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:10:47,161 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:10:47,164 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:10:47,164 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:10:47,165 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:10:47,166 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:10:47,170 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:10:47,171 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:10:47,171 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:10:47,172 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:10:47,172 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:10:47,172 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:10:47,174 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:10:47,175 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:10:47,177 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 03:10:47,230 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:10:47,230 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:10:47,231 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:10:47,232 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:10:47,232 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:10:47,232 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:10:47,232 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:10:47,233 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:10:47,234 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:10:47,235 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:10:47,235 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:10:47,235 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:10:47,235 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:10:47,235 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:10:47,237 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:10:47,237 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:10:47,237 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:10:47,238 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:10:47,238 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:10:47,238 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:10:47,238 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:10:47,238 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:10:47,239 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:10:47,239 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:10:47,239 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:10:47,239 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:10:47,239 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:10:47,239 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:10:47,240 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:10:47,240 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 03:10:47,665 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:10:47,686 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:10:47,693 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:10:47,695 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:10:47,696 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:10:47,697 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 03:10:47,787 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d324a2d/45328f71f62c4ea4af4ee6f74f008866/FLAG9c985c24d [2020-09-25 03:10:48,317 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:10:48,318 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-09-25 03:10:48,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d324a2d/45328f71f62c4ea4af4ee6f74f008866/FLAG9c985c24d [2020-09-25 03:10:48,664 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/56d324a2d/45328f71f62c4ea4af4ee6f74f008866 [2020-09-25 03:10:48,678 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:10:48,684 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:10:48,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:48,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:10:48,692 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:10:48,693 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,698 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 03:10:48, skipping insertion in model container [2020-09-25 03:10:48,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,710 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:10:48,734 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:10:48,929 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:48,934 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:10:48,950 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:10:48,964 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:10:48,965 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48 WrapperNode [2020-09-25 03:10:48,965 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:10:48,966 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:10:48,966 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:10:48,966 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:10:48,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,985 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,985 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,989 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,992 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,993 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (1/1) ... [2020-09-25 03:10:48,995 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:10:48,995 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:10:48,995 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:10:48,995 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:10:48,996 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (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 03:10:49,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:10:49,157 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:10:49,158 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:10:49,158 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:10:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:10:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:10:49,158 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:10:49,159 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:10:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:10:49,161 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:10:49,363 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:10:49,364 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:10:49,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:49 BoogieIcfgContainer [2020-09-25 03:10:49,372 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:10:49,377 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:10:49,377 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:10:49,385 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:10:49,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:10:48" (1/3) ... [2020-09-25 03:10:49,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:49, skipping insertion in model container [2020-09-25 03:10:49,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:10:48" (2/3) ... [2020-09-25 03:10:49,388 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:10:49, skipping insertion in model container [2020-09-25 03:10:49,388 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:10:49" (3/3) ... [2020-09-25 03:10:49,391 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-09-25 03:10:49,422 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:10:49,432 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:10:49,455 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:10:49,489 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:10:49,489 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:10:49,489 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:10:49,490 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:10:49,490 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:10:49,490 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:10:49,490 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:10:49,490 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:10:49,513 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:10:49,520 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:10:49,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:49,522 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:49,522 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:49,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:49,530 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:10:49,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:49,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-25 03:10:49,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:49,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:10:49,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:49,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 03:10:49,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:10:49,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:49,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:10:49,937 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:49,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:49,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:49,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:49,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:49,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:49,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:49,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:49,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:49,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:49,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:49,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:49,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:49,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:49,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:49,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:49,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:49,985 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 03:10:49,986 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-25 03:10:49,989 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:49,989 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:49,990 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [843652712] [2020-09-25 03:10:49,997 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:49,997 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:50,011 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:50,012 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:50,014 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:10:50,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:50,118 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:10:50,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:50,121 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:10:50,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:50,134 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:10:50,135 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:10:50,139 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 03:10:50,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:10:50,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:10:50,191 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:10:50,193 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:10:50,195 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:10:50,195 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:50,195 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:10:50,196 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:50,196 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:10:50,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:10:50,198 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:50,198 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 03:10:50,199 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:10:50,199 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:50,199 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:50,200 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:10:50,200 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:50,200 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [814111112] [2020-09-25 03:10:50,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:50,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:50,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:50,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:10:50,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:50,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 03:10:50,426 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:10:50,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:50,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:10:50,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:50,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:50,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:50,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:50,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:50,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:10:50,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:50,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:50,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:10:50,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:50,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:50,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:50,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:50,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:50,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 03:10:50,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:50,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:50,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:50,521 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 03:10:50,521 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [814111112] [2020-09-25 03:10:50,521 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:50,522 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:10:50,522 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151286706] [2020-09-25 03:10:50,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:10:50,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:50,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:10:50,525 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:10:50,527 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:10:50,573 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:50,574 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:10:50,574 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:50,574 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:10:50,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:50,576 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:10:50,576 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:10:50,578 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 03:10:50,578 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:10:50,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:10:50,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:10:50,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:10:50,588 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:10:50,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:50,589 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:10:50,589 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:10:50,589 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:10:50,591 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:10:50,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:50,592 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:50,592 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:10:50,592 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:50,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:50,593 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:10:50,593 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:50,594 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [639164382] [2020-09-25 03:10:50,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:50,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:50,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:10:52,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:52,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1888 [2020-09-25 03:10:52,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:52,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:52,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:52,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:52,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,558 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:52,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:52,559 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:10:52,559 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:52,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:52,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:52,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:52,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:52,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:52,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:52,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:52,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:52,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 03:10:52,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:52,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:10:52,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:52,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:52,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:52,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:53,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,006 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:10:53,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:53,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:53,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:53,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:53,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:53,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:53,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 03:10:53,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:53,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:53,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:53,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:53,048 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:10:53,049 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [639164382] [2020-09-25 03:10:53,049 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:10:53,053 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:10:53,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2076423241] [2020-09-25 03:10:53,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:10:53,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:53,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:10:53,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:10:53,057 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:10:53,155 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:53,155 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-25 03:10:53,156 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:10:53,156 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:10:53,156 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:53,158 INFO L225 Difference]: With dead ends: 47 [2020-09-25 03:10:53,158 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 03:10:53,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:10:53,159 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 03:10:53,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 03:10:53,166 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 03:10:53,168 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 03:10:53,168 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 03:10:53,169 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:53,169 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 03:10:53,169 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:10:53,169 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 03:10:53,171 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:53,171 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:53,171 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:53,172 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:10:53,172 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:53,172 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:53,172 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-25 03:10:53,173 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:53,173 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1588895301] [2020-09-25 03:10:53,173 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:53,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:53,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:53,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:56,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:56,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:10:56,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3445 [2020-09-25 03:10:56,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:10:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:10:56,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:10:56,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:56,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:56,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:56,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:56,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:56,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:56,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:10:56,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:56,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:56,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:56,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:56,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:56,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:57,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:57,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 984 [2020-09-25 03:10:57,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:10:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:10:57,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:57,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:57,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:57,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 03:10:57,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:10:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:10:57,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:57,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:57,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:57,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:57,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:57,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:57,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 03:10:57,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:57,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:57,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:57,817 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 03:10:57,817 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1588895301] [2020-09-25 03:10:57,818 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:57,818 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 03:10:57,818 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368090115] [2020-09-25 03:10:57,819 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 03:10:57,820 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:57,820 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 03:10:57,822 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-25 03:10:57,822 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 9 states. [2020-09-25 03:10:57,940 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:57,940 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-09-25 03:10:57,943 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:57,943 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-25 03:10:57,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:57,948 INFO L225 Difference]: With dead ends: 58 [2020-09-25 03:10:57,949 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 03:10:57,950 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:57,950 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 03:10:57,967 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-09-25 03:10:57,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:10:57,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:10:57,974 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:10:57,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:57,975 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:10:57,975 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 03:10:57,975 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:10:57,981 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:10:57,981 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:57,982 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:57,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:10:57,982 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:57,982 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:57,983 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-25 03:10:57,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:57,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1078492352] [2020-09-25 03:10:57,983 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:57,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:58,952 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:10:58,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:10:58,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 949 [2020-09-25 03:10:58,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:10:58,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:10:58,953 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:58,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:10:58,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:58,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:58,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:10:58,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:58,980 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:58,980 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:58,980 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:58,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:58,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:58,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:10:58,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:58,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:59,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:10:59,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-25 03:10:59,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:59,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:59,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:10:59,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:10:59,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:59,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:59,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:59,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:59,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:59,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:10:59,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:59,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:59,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:59,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:59,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:59,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:59,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:59,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 03:10:59,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:59,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:10:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:59,290 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:10:59,291 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1078492352] [2020-09-25 03:10:59,292 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:59,292 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:10:59,292 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2137749225] [2020-09-25 03:10:59,293 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:10:59,293 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:59,293 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:10:59,293 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:10:59,293 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 6 states. [2020-09-25 03:10:59,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:59,377 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-09-25 03:10:59,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:10:59,379 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 03:10:59,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:59,383 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:10:59,383 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 03:10:59,387 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:10:59,388 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 03:10:59,403 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2020-09-25 03:10:59,404 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:10:59,405 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:10:59,410 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:10:59,410 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:59,410 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:10:59,410 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:10:59,410 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:10:59,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:10:59,417 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:59,417 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:59,417 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:10:59,418 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:59,418 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:59,418 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:10:59,418 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:59,419 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [438431121] [2020-09-25 03:10:59,419 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:59,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:59,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:59,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,883 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:00,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:11:00,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:11:00,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1452 [2020-09-25 03:11:00,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:00,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:00,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:11:00,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:00,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:00,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,904 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:00,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:00,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:00,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:00,905 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:00,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:00,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:00,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:00,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:00,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:01,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:11:01,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:01,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 430 [2020-09-25 03:11:01,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:01,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:01,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:01,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:01,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:01,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:01,400 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:01,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:11:01,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:01,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:01,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:01,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:01,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:01,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:01,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 03:11:01,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:01,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:01,449 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:11:01,450 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [438431121] [2020-09-25 03:11:01,451 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:01,451 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:11:01,452 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1771677267] [2020-09-25 03:11:01,453 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:11:01,453 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:01,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:11:01,453 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:11:01,454 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-25 03:11:01,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:01,533 INFO L93 Difference]: Finished difference Result 66 states and 92 transitions. [2020-09-25 03:11:01,533 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:11:01,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:11:01,534 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:01,536 INFO L225 Difference]: With dead ends: 66 [2020-09-25 03:11:01,536 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 03:11:01,537 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:11:01,537 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 03:11:01,547 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2020-09-25 03:11:01,547 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:11:01,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2020-09-25 03:11:01,549 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 35 [2020-09-25 03:11:01,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:01,549 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2020-09-25 03:11:01,549 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:11:01,550 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2020-09-25 03:11:01,552 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:11:01,552 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:01,552 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:01,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:11:01,552 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:01,553 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:01,553 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-25 03:11:01,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:01,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2051905373] [2020-09-25 03:11:01,554 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:01,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:01,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:01,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:02,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:04,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:05,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,564 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:11:06,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:11:06,565 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 03:11:06,565 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:06,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:11:06,566 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:06,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:06,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:06,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:06,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:06,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:06,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:06,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:06,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:06,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:06,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:06,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:07,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:11:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:10,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4104 [2020-09-25 03:11:10,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:11:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:10,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:10,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:10,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:10,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:10,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 03:11:10,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:10,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:10,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:10,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:10,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:10,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:10,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:11,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:11:11,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:11,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 514 [2020-09-25 03:11:11,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:11,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:11,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:11,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:11,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:11,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:11,362 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:11,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:11,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:11,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:11,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:11,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:11,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:11,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:11,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:11,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:11,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:11,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:11,380 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:11,380 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:11,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:11,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:11,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:11,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:11,406 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 38 trivial. 0 not checked. [2020-09-25 03:11:11,407 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2051905373] [2020-09-25 03:11:11,407 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:11,407 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:11:11,408 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624207942] [2020-09-25 03:11:11,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:11:11,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:11,409 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:11:11,409 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:11:11,409 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand 11 states. [2020-09-25 03:11:11,558 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:11,559 INFO L93 Difference]: Finished difference Result 87 states and 125 transitions. [2020-09-25 03:11:11,559 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:11:11,560 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 03:11:11,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:11,562 INFO L225 Difference]: With dead ends: 87 [2020-09-25 03:11:11,564 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 03:11:11,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=159, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:11:11,566 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 03:11:11,588 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 54. [2020-09-25 03:11:11,588 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:11:11,590 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-25 03:11:11,592 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 53 [2020-09-25 03:11:11,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:11,593 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-25 03:11:11,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:11:11,593 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-25 03:11:11,595 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:11:11,595 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:11,595 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 03:11:11,595 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:11:11,596 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:11,596 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:11,596 INFO L82 PathProgramCache]: Analyzing trace with hash 10157787, now seen corresponding path program 3 times [2020-09-25 03:11:11,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:11,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1148015096] [2020-09-25 03:11:11,599 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:11,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:11,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:11,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:13,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:11:16,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:11:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:16,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:16,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:11:16,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:16,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:16,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:16,622 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:16,622 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:16,622 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:16,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:16,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:16,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:16,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:16,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:16,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:18,110 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:11:18,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:18,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1481 [2020-09-25 03:11:18,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:18,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:18,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:11:18,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:18,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:18,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:18,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,179 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:18,179 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:18,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:18,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:18,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:18,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:18,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:18,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:18,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:18,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:18,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:18,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:11:18,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:11:18,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 03:11:18,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:18,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:11:18,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:18,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:18,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:18,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:18,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:18,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:18,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:18,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:18,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:18,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:11:18,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:18,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:18,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:18,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:18,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:11:18,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:18,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:18,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:18,487 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-25 03:11:18,487 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1148015096] [2020-09-25 03:11:18,487 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:18,488 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:11:18,488 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1404137627] [2020-09-25 03:11:18,488 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:11:18,488 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:18,489 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:11:18,489 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:11:18,489 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 12 states. [2020-09-25 03:11:18,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:18,622 INFO L93 Difference]: Finished difference Result 98 states and 145 transitions. [2020-09-25 03:11:18,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 03:11:18,623 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-09-25 03:11:18,623 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:18,625 INFO L225 Difference]: With dead ends: 98 [2020-09-25 03:11:18,625 INFO L226 Difference]: Without dead ends: 92 [2020-09-25 03:11:18,626 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=168, Unknown=0, NotChecked=0, Total=210 [2020-09-25 03:11:18,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-09-25 03:11:18,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 62. [2020-09-25 03:11:18,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-25 03:11:18,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2020-09-25 03:11:18,640 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 51 [2020-09-25 03:11:18,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:18,640 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2020-09-25 03:11:18,640 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:11:18,641 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-09-25 03:11:18,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:11:18,642 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:18,642 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 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] [2020-09-25 03:11:18,642 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:11:18,643 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:18,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:18,643 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 4 times [2020-09-25 03:11:18,643 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:18,643 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [671253188] [2020-09-25 03:11:18,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:18,647 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:18,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:19,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:23,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:11:23,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:23,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:23,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:23,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:23,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:23,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:23,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:23,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:23,672 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:23,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:23,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:23,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:23,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:23,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:23,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:23,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:23,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:11:24,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:11:24,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 789 [2020-09-25 03:11:24,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:11:24,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:11:24,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:24,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:24,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:11:24,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:24,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:24,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,594 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:11:24,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 03:11:24,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:24,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:24,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:24,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:11:24,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:11:24,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:24,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:24,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:24,661 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:24,661 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:24,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:11:24,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:11:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:24,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:24,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:24,684 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 03:11:24,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [671253188] [2020-09-25 03:11:24,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:24,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:11:24,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886804635] [2020-09-25 03:11:24,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:11:24,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:24,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:11:24,686 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:11:24,687 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand 12 states. [2020-09-25 03:11:24,881 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:24,881 INFO L93 Difference]: Finished difference Result 112 states and 180 transitions. [2020-09-25 03:11:24,882 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:11:24,882 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 03:11:24,882 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:24,884 INFO L225 Difference]: With dead ends: 112 [2020-09-25 03:11:24,884 INFO L226 Difference]: Without dead ends: 106 [2020-09-25 03:11:24,885 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=69, Invalid=237, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:11:24,885 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 106 states. [2020-09-25 03:11:24,898 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 106 to 70. [2020-09-25 03:11:24,898 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:11:24,900 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 120 transitions. [2020-09-25 03:11:24,900 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 120 transitions. Word has length 52 [2020-09-25 03:11:24,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:24,901 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 120 transitions. [2020-09-25 03:11:24,901 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:11:24,901 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 120 transitions. [2020-09-25 03:11:24,902 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 03:11:24,903 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:24,903 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 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] [2020-09-25 03:11:24,903 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:11:24,903 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:24,903 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:24,904 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 5 times [2020-09-25 03:11:24,904 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:24,904 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1319972614] [2020-09-25 03:11:24,904 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:24,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:24,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:25,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:27,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:29,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:29,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 03:11:29,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:11:29,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:29,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 03:11:29,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:29,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:29,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:29,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:29,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:29,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:29,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:29,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:29,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:29,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:29,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:29,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:29,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:29,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:29,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:29,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:29,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:30,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:30,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:30,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:31,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:32,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:32,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 03:11:32,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:11:32,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3067 [2020-09-25 03:11:32,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:32,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:11:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:32,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:11:32,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:33,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:33,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:33,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:33,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:11:33,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:33,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-25 03:11:33,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:11:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:33,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:11:33,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:33,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:33,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:33,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:33,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:33,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:33,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:11:33,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:33,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:11:33,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:33,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:33,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:11:33,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:33,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 03:11:33,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:33,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:33,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:33,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:33,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:33,275 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 03:11:33,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:33,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:33,284 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:33,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:11:33,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:33,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:11:33,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:33,289 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 14 proven. 23 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-25 03:11:33,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1319972614] [2020-09-25 03:11:33,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:33,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:11:33,290 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657116864] [2020-09-25 03:11:33,291 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:11:33,291 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:33,291 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:11:33,292 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:11:33,292 INFO L87 Difference]: Start difference. First operand 70 states and 120 transitions. Second operand 8 states. [2020-09-25 03:11:33,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:33,437 INFO L93 Difference]: Finished difference Result 174 states and 346 transitions. [2020-09-25 03:11:33,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:11:33,438 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-25 03:11:33,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:33,439 INFO L225 Difference]: With dead ends: 174 [2020-09-25 03:11:33,440 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 03:11:33,442 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:11:33,443 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 03:11:33,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 84. [2020-09-25 03:11:33,455 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-09-25 03:11:33,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 121 transitions. [2020-09-25 03:11:33,457 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 121 transitions. Word has length 51 [2020-09-25 03:11:33,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:33,458 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 121 transitions. [2020-09-25 03:11:33,458 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:11:33,458 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 121 transitions. [2020-09-25 03:11:33,460 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:11:33,460 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:33,460 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:33,460 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:11:33,460 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:33,461 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:33,461 INFO L82 PathProgramCache]: Analyzing trace with hash 2093397857, now seen corresponding path program 3 times [2020-09-25 03:11:33,461 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:33,461 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932558506] [2020-09-25 03:11:33,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:33,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:33,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:33,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:34,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:34,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:38,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:38,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:11:38,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:11:38,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:11:38,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:11:38,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:11:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:38,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:11:38,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:38,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:38,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:11:38,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:38,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:11:38,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:38,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:38,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:38,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:11:38,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:38,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:38,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:38,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:38,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:38,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:39,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:40,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:11:40,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:11:40,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1633 [2020-09-25 03:11:40,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:11:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:11:40,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:11:40,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:40,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:40,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:40,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:40,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:11:40,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:11:40,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 03:11:40,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:40,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:11:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:40,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:11:40,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:40,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:11:40,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:40,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,284 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:40,285 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:40,285 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:40,285 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:40,285 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:40,285 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:40,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:40,286 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:40,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:11:40,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:40,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:40,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:40,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:40,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:11:40,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:11:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:40,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:11:40,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:40,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 03:11:40,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:40,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:11:40,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:11:40,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:11:40,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:11:40,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:11:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:11:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:11:40,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:11:40,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:11:40,325 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 26 proven. 9 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-25 03:11:40,325 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932558506] [2020-09-25 03:11:40,325 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:11:40,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:11:40,326 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [383485475] [2020-09-25 03:11:40,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:11:40,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:11:40,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:11:40,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:11:40,329 INFO L87 Difference]: Start difference. First operand 84 states and 121 transitions. Second operand 6 states. [2020-09-25 03:11:40,445 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:11:40,445 INFO L93 Difference]: Finished difference Result 128 states and 194 transitions. [2020-09-25 03:11:40,447 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 03:11:40,447 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 53 [2020-09-25 03:11:40,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:11:40,451 INFO L225 Difference]: With dead ends: 128 [2020-09-25 03:11:40,451 INFO L226 Difference]: Without dead ends: 122 [2020-09-25 03:11:40,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:11:40,452 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2020-09-25 03:11:40,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 108. [2020-09-25 03:11:40,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 108 states. [2020-09-25 03:11:40,466 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 170 transitions. [2020-09-25 03:11:40,466 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 170 transitions. Word has length 53 [2020-09-25 03:11:40,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:11:40,466 INFO L479 AbstractCegarLoop]: Abstraction has 108 states and 170 transitions. [2020-09-25 03:11:40,467 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:11:40,467 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 170 transitions. [2020-09-25 03:11:40,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 90 [2020-09-25 03:11:40,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:11:40,468 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:11:40,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 03:11:40,469 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:11:40,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:11:40,469 INFO L82 PathProgramCache]: Analyzing trace with hash -1068467993, now seen corresponding path program 4 times [2020-09-25 03:11:40,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:11:40,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1234610733] [2020-09-25 03:11:40,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:11:40,474 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:11:40,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:40,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:41,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:41,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:41,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:44,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:11:44,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking...