/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=BIGGEST --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_25-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:23:57,100 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:23:57,105 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:23:57,150 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:23:57,151 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:23:57,161 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:23:57,164 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:23:57,168 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:23:57,171 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:23:57,175 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:23:57,176 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:23:57,177 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:23:57,177 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:23:57,180 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:23:57,183 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:23:57,184 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:23:57,186 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:23:57,187 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:23:57,189 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:23:57,198 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:23:57,201 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:23:57,202 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:23:57,203 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:23:57,204 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:23:57,207 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:23:57,207 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:23:57,207 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:23:57,210 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:23:57,211 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:23:57,213 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:23:57,213 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:23:57,214 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:23:57,215 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:23:57,216 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:23:57,217 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:23:57,217 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:23:57,218 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:23:57,218 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:23:57,219 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:23:57,220 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:23:57,221 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:23:57,222 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:23:57,267 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:23:57,267 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:23:57,270 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:23:57,270 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:23:57,270 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:23:57,270 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:23:57,271 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:23:57,271 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:23:57,271 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:23:57,271 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:23:57,273 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:23:57,273 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:23:57,273 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:23:57,273 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:23:57,274 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:23:57,274 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:23:57,274 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:23:57,274 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:23:57,274 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:23:57,275 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:23:57,275 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:23:57,275 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:57,275 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:23:57,275 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:23:57,276 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:23:57,276 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:23:57,276 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:23:57,276 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:23:57,276 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:23:57,277 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:23:57,736 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:23:57,759 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:23:57,763 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:23:57,765 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:23:57,766 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:23:57,767 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-24 20:23:57,857 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9d2b1b05/52e3beb28ab74f9996b64b0b8c23da2e/FLAG55c5e03c7 [2020-09-24 20:23:58,359 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:58,361 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_25-1.c [2020-09-24 20:23:58,369 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9d2b1b05/52e3beb28ab74f9996b64b0b8c23da2e/FLAG55c5e03c7 [2020-09-24 20:23:58,712 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b9d2b1b05/52e3beb28ab74f9996b64b0b8c23da2e [2020-09-24 20:23:58,725 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:58,732 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:58,733 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:58,733 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:58,738 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:58,739 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:58" (1/1) ... [2020-09-24 20:23:58,743 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@37d4521a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:58, skipping insertion in model container [2020-09-24 20:23:58,743 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:58" (1/1) ... [2020-09-24 20:23:58,752 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:58,776 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:59,040 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:59,050 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:59,070 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:59,084 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:59,084 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59 WrapperNode [2020-09-24 20:23:59,084 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:59,085 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:59,085 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:59,086 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:59,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... [2020-09-24 20:23:59,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... [2020-09-24 20:23:59,105 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... [2020-09-24 20:23:59,106 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... [2020-09-24 20:23:59,110 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... [2020-09-24 20:23:59,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... [2020-09-24 20:23:59,114 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... [2020-09-24 20:23:59,115 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:59,116 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:59,116 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:59,116 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:59,117 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:59,265 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:23:59,266 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:23:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:59,499 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:59,500 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:59,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:59 BoogieIcfgContainer [2020-09-24 20:23:59,508 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:59,524 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:59,524 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:59,533 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:59,533 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:58" (1/3) ... [2020-09-24 20:23:59,537 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:59, skipping insertion in model container [2020-09-24 20:23:59,537 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:59" (2/3) ... [2020-09-24 20:23:59,538 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@52522039 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:59, skipping insertion in model container [2020-09-24 20:23:59,540 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:59" (3/3) ... [2020-09-24 20:23:59,542 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_25-1.c [2020-09-24 20:23:59,558 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:59,568 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:59,591 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:59,621 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:59,622 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:59,622 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:59,622 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:59,622 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:59,622 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:59,623 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:59,623 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:59,643 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:23:59,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:23:59,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:59,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:59,652 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:59,658 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:59,659 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:23:59,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:59,668 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2079849031] [2020-09-24 20:23:59,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:59,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:24:00,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:00,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-24 20:24:00,015 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 20:24:00,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:00,016 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-09-24 20:24:00,081 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:00,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:24:00,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:00,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:00,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:00,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:00,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:24:00,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:00,111 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:00,148 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:24:00,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2079849031] [2020-09-24 20:24:00,151 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:24:00,151 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:24:00,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238943489] [2020-09-24 20:24:00,159 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:24:00,159 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:00,176 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:24:00,178 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:24:00,180 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:24:00,261 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:00,261 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:24:00,262 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:24:00,263 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:24:00,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:00,277 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:24:00,277 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:24:00,282 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 [2020-09-24 20:24:00,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:24:00,331 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:24:00,333 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:24:00,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:24:00,337 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:24:00,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:00,337 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:24:00,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:24:00,338 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:24:00,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:24:00,340 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:00,340 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:00,341 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:24:00,341 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:00,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:00,341 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:24:00,342 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:00,342 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1303379697] [2020-09-24 20:24:00,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:00,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,526 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:24:00,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:00,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 20:24:00,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 20:24:00,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:00,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:00,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:00,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:00,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:00,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:00,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:00,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,590 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:00,590 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:00,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:00,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 20:24:00,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:00,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:00,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:24:00,621 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1303379697] [2020-09-24 20:24:00,621 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:24:00,621 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:24:00,622 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810985458] [2020-09-24 20:24:00,623 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:24:00,624 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:00,624 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:24:00,624 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:24:00,624 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:24:00,656 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:00,657 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:24:00,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:24:00,657 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:24:00,658 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:00,659 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:24:00,659 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:24:00,660 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 [2020-09-24 20:24:00,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:24:00,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:24:00,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:24:00,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:24:00,668 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:24:00,669 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:00,669 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:24:00,669 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:24:00,669 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:24:00,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:24:00,671 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:00,671 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] [2020-09-24 20:24:00,671 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:24:00,672 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:00,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:00,672 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:24:00,672 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:00,673 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1283389321] [2020-09-24 20:24:00,673 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:00,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:00,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:00,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:24:02,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:24:02,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1891 [2020-09-24 20:24:02,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:02,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:24:02,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:24:02,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:02,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:02,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:02,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:02,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:24:02,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:02,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:02,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:02,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:02,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:02,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:02,945 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:02,946 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:24:02,946 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:02,946 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-09-24 20:24:02,946 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:02,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:02,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:24:02,947 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:02,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:02,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:02,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:03,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:03,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:03,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:03,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:03,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:03,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:03,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:03,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:03,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:03,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 20:24:03,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:03,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:03,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:03,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:24:03,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1283389321] [2020-09-24 20:24:03,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:24:03,058 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 20:24:03,058 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [892651141] [2020-09-24 20:24:03,059 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:24:03,059 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:03,060 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:24:03,061 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:24:03,061 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:24:03,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:03,175 INFO L93 Difference]: Finished difference Result 48 states and 58 transitions. [2020-09-24 20:24:03,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:24:03,175 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:24:03,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:03,178 INFO L225 Difference]: With dead ends: 48 [2020-09-24 20:24:03,178 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 20:24:03,179 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:24:03,179 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 20:24:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 36. [2020-09-24 20:24:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:24:03,189 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 20:24:03,189 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 20:24:03,190 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:03,190 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 20:24:03,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:24:03,190 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 20:24:03,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:24:03,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:03,193 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] [2020-09-24 20:24:03,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:24:03,193 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:03,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:03,194 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-24 20:24:03,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:03,194 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [416158001] [2020-09-24 20:24:03,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:03,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:03,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:03,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:06,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:24:06,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:24:06,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3164 [2020-09-24 20:24:06,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:06,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:24:06,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:24:06,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:06,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:06,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:06,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:06,400 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:06,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:06,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:06,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:06,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:06,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:06,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:06,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:06,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:06,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,388 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:07,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:07,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:24:07,389 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 965 [2020-09-24 20:24:07,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:07,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:24:07,390 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:07,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:07,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:07,440 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:07,440 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:07,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:24:07,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:07,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:07,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:07,457 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:07,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:07,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:07,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-24 20:24:07,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:07,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:07,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:07,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:07,498 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:24:07,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [416158001] [2020-09-24 20:24:07,501 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:07,501 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:07,501 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1953650188] [2020-09-24 20:24:07,502 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:07,502 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:07,503 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:07,504 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:07,504 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 8 states. [2020-09-24 20:24:07,626 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:07,627 INFO L93 Difference]: Finished difference Result 66 states and 86 transitions. [2020-09-24 20:24:07,627 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:24:07,627 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:24:07,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:07,631 INFO L225 Difference]: With dead ends: 66 [2020-09-24 20:24:07,631 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 20:24:07,635 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:07,635 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 20:24:07,647 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 44. [2020-09-24 20:24:07,648 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 20:24:07,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-24 20:24:07,650 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-24 20:24:07,650 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:07,650 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-24 20:24:07,650 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:07,651 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-24 20:24:07,652 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 20:24:07,653 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:07,653 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] [2020-09-24 20:24:07,653 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:24:07,653 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:07,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:07,654 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-24 20:24:07,654 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:07,654 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1783280747] [2020-09-24 20:24:07,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:07,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:08,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 20:24:08,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:08,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 894 [2020-09-24 20:24:08,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:08,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:08,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 20:24:08,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:08,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:08,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:08,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:08,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:08,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:08,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:08,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:08,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:08,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:08,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:08,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:08,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:08,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:08,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:08,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:08,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 20:24:08,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:08,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:24:08,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:08,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:08,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:08,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:08,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:08,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:24:08,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:08,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:08,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:08,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:08,695 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:08,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:08,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:08,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:08,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:08,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:24:08,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:08,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:08,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:08,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:08,730 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-24 20:24:08,730 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1783280747] [2020-09-24 20:24:08,731 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:08,731 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:08,731 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1592695903] [2020-09-24 20:24:08,732 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:08,732 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:08,732 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:08,732 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:08,733 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-24 20:24:08,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:08,848 INFO L93 Difference]: Finished difference Result 76 states and 113 transitions. [2020-09-24 20:24:08,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:24:08,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-24 20:24:08,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:08,852 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:24:08,852 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 20:24:08,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:08,854 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 20:24:08,866 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 54. [2020-09-24 20:24:08,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:24:08,869 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-24 20:24:08,869 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 34 [2020-09-24 20:24:08,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:08,869 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-24 20:24:08,869 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:08,870 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-24 20:24:08,872 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:24:08,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:08,873 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] [2020-09-24 20:24:08,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:24:08,873 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:08,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:08,874 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:24:08,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:08,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1735953302] [2020-09-24 20:24:08,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:08,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:08,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:08,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:24:10,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:10,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1427 [2020-09-24 20:24:10,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:10,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:10,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 20:24:10,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:10,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:10,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:10,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:10,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:10,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:10,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:24:10,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:10,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 476 [2020-09-24 20:24:10,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:10,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:10,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:10,861 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,874 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:10,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:24:10,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:10,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:10,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:10,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:10,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:10,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:10,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:10,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:10,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:24:10,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:10,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:10,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:10,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:10,927 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 20:24:10,928 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1735953302] [2020-09-24 20:24:10,928 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:10,928 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:10,928 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2108401333] [2020-09-24 20:24:10,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:10,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:10,929 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:10,930 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:10,930 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 8 states. [2020-09-24 20:24:11,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:11,066 INFO L93 Difference]: Finished difference Result 94 states and 146 transitions. [2020-09-24 20:24:11,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 20:24:11,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-24 20:24:11,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:11,070 INFO L225 Difference]: With dead ends: 94 [2020-09-24 20:24:11,070 INFO L226 Difference]: Without dead ends: 88 [2020-09-24 20:24:11,071 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:11,071 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2020-09-24 20:24:11,083 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 62. [2020-09-24 20:24:11,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:24:11,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 99 transitions. [2020-09-24 20:24:11,086 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 99 transitions. Word has length 35 [2020-09-24 20:24:11,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:11,087 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 99 transitions. [2020-09-24 20:24:11,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:11,087 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 99 transitions. [2020-09-24 20:24:11,090 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:24:11,090 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:11,091 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] [2020-09-24 20:24:11,091 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:24:11,091 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:11,091 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:11,091 INFO L82 PathProgramCache]: Analyzing trace with hash 1485744477, now seen corresponding path program 3 times [2020-09-24 20:24:11,092 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:11,092 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [170667541] [2020-09-24 20:24:11,092 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:11,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,102 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:16,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:16,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:16,103 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:16,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:16,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 20:24:16,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:24:16,104 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:16,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:16,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:16,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:16,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:16,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:16,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:16,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:16,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:16,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:16,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:16,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:16,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:18,197 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:18,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:18,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2052 [2020-09-24 20:24:18,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:18,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:18,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:18,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:18,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:18,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:18,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:18,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:18,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:18,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:18,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 20:24:18,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:18,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:18,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:18,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:18,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:18,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:18,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:18,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:18,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:18,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-24 20:24:18,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:18,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:18,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:18,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:18,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:18,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:18,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:18,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:18,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:18,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:24:18,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:18,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:18,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:18,481 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:18,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:18,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:18,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:18,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:24:18,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:18,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:18,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:18,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:18,508 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 20:24:18,509 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [170667541] [2020-09-24 20:24:18,509 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:18,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:24:18,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1522200760] [2020-09-24 20:24:18,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:24:18,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:18,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:24:18,511 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:24:18,511 INFO L87 Difference]: Start difference. First operand 62 states and 99 transitions. Second operand 10 states. [2020-09-24 20:24:18,710 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:18,710 INFO L93 Difference]: Finished difference Result 92 states and 142 transitions. [2020-09-24 20:24:18,711 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 20:24:18,711 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 51 [2020-09-24 20:24:18,711 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:18,713 INFO L225 Difference]: With dead ends: 92 [2020-09-24 20:24:18,713 INFO L226 Difference]: Without dead ends: 86 [2020-09-24 20:24:18,714 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 2 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=191, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:24:18,714 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 86 states. [2020-09-24 20:24:18,725 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 86 to 56. [2020-09-24 20:24:18,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-24 20:24:18,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 88 transitions. [2020-09-24 20:24:18,727 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 88 transitions. Word has length 51 [2020-09-24 20:24:18,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:18,727 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 88 transitions. [2020-09-24 20:24:18,727 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:24:18,727 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 88 transitions. [2020-09-24 20:24:18,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 20:24:18,729 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:18,730 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] [2020-09-24 20:24:18,730 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:24:18,730 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:18,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:18,730 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-24 20:24:18,731 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:18,731 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1031000404] [2020-09-24 20:24:18,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:18,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:18,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:18,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:21,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:22,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,738 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:23,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 20:24:23,738 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:23,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:23,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:23,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-24 20:24:23,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:23,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:23,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,767 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:23,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:23,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:23,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:23,767 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:23,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:23,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:23,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:23,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:23,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:24,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:27,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 20:24:27,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3894 [2020-09-24 20:24:27,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:27,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:24:27,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:27,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:27,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:27,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:27,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:27,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:27,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:27,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:27,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:27,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:27,724 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:27,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:27,990 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:24:27,990 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:27,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 20:24:27,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:27,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:27,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:27,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:28,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:28,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:28,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:28,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:28,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:28,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:28,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:28,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:28,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:28,061 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:28,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:28,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,091 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:28,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:28,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:28,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 20:24:28,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:28,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:28,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:28,116 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 22 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-24 20:24:28,116 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1031000404] [2020-09-24 20:24:28,116 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:28,116 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:24:28,117 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [232781011] [2020-09-24 20:24:28,118 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:24:28,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:28,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:24:28,119 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:28,119 INFO L87 Difference]: Start difference. First operand 56 states and 88 transitions. Second operand 12 states. [2020-09-24 20:24:28,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:28,334 INFO L93 Difference]: Finished difference Result 106 states and 158 transitions. [2020-09-24 20:24:28,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:24:28,335 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-24 20:24:28,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:28,337 INFO L225 Difference]: With dead ends: 106 [2020-09-24 20:24:28,337 INFO L226 Difference]: Without dead ends: 100 [2020-09-24 20:24:28,338 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=98, Invalid=322, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:24:28,339 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-24 20:24:28,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 68. [2020-09-24 20:24:28,349 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 20:24:28,351 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 110 transitions. [2020-09-24 20:24:28,351 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 110 transitions. Word has length 53 [2020-09-24 20:24:28,351 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:28,352 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 110 transitions. [2020-09-24 20:24:28,352 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:24:28,352 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 110 transitions. [2020-09-24 20:24:28,354 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:24:28,354 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:28,354 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] [2020-09-24 20:24:28,354 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 20:24:28,355 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:28,355 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:28,355 INFO L82 PathProgramCache]: Analyzing trace with hash 10157787, now seen corresponding path program 4 times [2020-09-24 20:24:28,355 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:28,356 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1413074449] [2020-09-24 20:24:28,356 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:28,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:28,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:28,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:29,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:33,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:33,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:33,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:24:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:33,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:33,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-24 20:24:33,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:33,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:33,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:33,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:33,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:33,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:33,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:33,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:33,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:33,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:33,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:33,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:33,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:33,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:33,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:33,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:33,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:34,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:34,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:34,818 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:34,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1418 [2020-09-24 20:24:34,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:34,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:34,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:34,866 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:34,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:34,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:34,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:34,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:34,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:34,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:34,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:34,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:34,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:34,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:34,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:34,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:34,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,052 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:24:35,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:35,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-24 20:24:35,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:24:35,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:35,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:35,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:35,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:35,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:35,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:35,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:35,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:24:35,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:35,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,162 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 20:24:35,162 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1413074449] [2020-09-24 20:24:35,162 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:35,163 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:24:35,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1782373551] [2020-09-24 20:24:35,163 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:24:35,164 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:35,164 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:24:35,164 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:35,164 INFO L87 Difference]: Start difference. First operand 68 states and 110 transitions. Second operand 12 states. [2020-09-24 20:24:35,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:35,349 INFO L93 Difference]: Finished difference Result 106 states and 158 transitions. [2020-09-24 20:24:35,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 20:24:35,352 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 51 [2020-09-24 20:24:35,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:35,354 INFO L225 Difference]: With dead ends: 106 [2020-09-24 20:24:35,354 INFO L226 Difference]: Without dead ends: 100 [2020-09-24 20:24:35,355 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=219, Unknown=0, NotChecked=0, Total=272 [2020-09-24 20:24:35,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2020-09-24 20:24:35,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 74. [2020-09-24 20:24:35,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 20:24:35,366 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 121 transitions. [2020-09-24 20:24:35,366 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 121 transitions. Word has length 51 [2020-09-24 20:24:35,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:35,367 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 121 transitions. [2020-09-24 20:24:35,367 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:24:35,367 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 121 transitions. [2020-09-24 20:24:35,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:24:35,368 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:35,369 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] [2020-09-24 20:24:35,369 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 20:24:35,369 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:35,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:35,369 INFO L82 PathProgramCache]: Analyzing trace with hash 260731392, now seen corresponding path program 5 times [2020-09-24 20:24:35,370 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:35,370 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [73734622] [2020-09-24 20:24:35,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:35,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:38,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:40,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:24:40,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 20:24:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:40,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 20:24:40,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 20:24:40,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:40,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:40,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:40,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:40,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:40,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:40,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:40,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:40,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:40,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:40,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:40,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:40,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:40,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:43,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:43,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:24:43,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3322 [2020-09-24 20:24:43,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:43,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:24:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:43,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:43,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:43,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:43,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:43,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:43,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:43,772 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:43,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:43,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:43,773 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:43,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:43,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:43,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:43,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:44,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:44,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:24:44,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 513 [2020-09-24 20:24:44,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:44,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:44,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:44,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:44,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:44,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:44,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:44,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:44,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:44,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:24:44,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:44,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:44,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:44,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:44,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:44,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:44,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:44,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:44,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:44,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:24:44,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:44,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:44,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:44,408 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-24 20:24:44,408 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [73734622] [2020-09-24 20:24:44,408 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:44,409 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 20:24:44,409 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1838983620] [2020-09-24 20:24:44,409 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 20:24:44,409 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:44,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 20:24:44,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=105, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:44,410 INFO L87 Difference]: Start difference. First operand 74 states and 121 transitions. Second operand 12 states. [2020-09-24 20:24:44,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:44,654 INFO L93 Difference]: Finished difference Result 118 states and 180 transitions. [2020-09-24 20:24:44,657 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-24 20:24:44,657 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-24 20:24:44,657 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:44,659 INFO L225 Difference]: With dead ends: 118 [2020-09-24 20:24:44,659 INFO L226 Difference]: Without dead ends: 112 [2020-09-24 20:24:44,661 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2020-09-24 20:24:44,661 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-09-24 20:24:44,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 74. [2020-09-24 20:24:44,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-09-24 20:24:44,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 121 transitions. [2020-09-24 20:24:44,671 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 121 transitions. Word has length 52 [2020-09-24 20:24:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:44,671 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 121 transitions. [2020-09-24 20:24:44,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 20:24:44,672 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 121 transitions. [2020-09-24 20:24:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:24:44,673 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:44,673 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] [2020-09-24 20:24:44,673 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 20:24:44,674 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:44,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:44,674 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 6 times [2020-09-24 20:24:44,674 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:44,674 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [166410806] [2020-09-24 20:24:44,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:44,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:44,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:44,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:47,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:49,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:49,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:49,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:24:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:24:49,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 20:24:49,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 20:24:49,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:49,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:49,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:49,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:49,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:49,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:49,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:49,698 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:49,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:49,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:49,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:49,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:49,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:49,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:49,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:49,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:49,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:50,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:51,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2032 [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-24 20:24:51,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:51,766 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:51,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:51,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:51,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:51,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:51,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:24:51,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:51,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-24 20:24:51,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:51,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-24 20:24:51,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:51,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:52,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:52,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:52,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:52,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:52,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:52,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:24:52,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 20:24:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:52,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:24:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:52,011 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:52,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:52,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:52,022 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:52,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:52,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:52,023 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:24:52,023 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:52,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:52,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:52,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:24:52,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:52,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:52,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:52,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:52,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 20:24:52,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:52,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:52,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:52,049 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 16 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-24 20:24:52,050 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [166410806] [2020-09-24 20:24:52,050 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:52,050 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:24:52,050 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810296511] [2020-09-24 20:24:52,051 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:24:52,051 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:52,051 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:24:52,051 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:24:52,051 INFO L87 Difference]: Start difference. First operand 74 states and 121 transitions. Second operand 9 states. [2020-09-24 20:24:52,205 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:52,206 INFO L93 Difference]: Finished difference Result 108 states and 165 transitions. [2020-09-24 20:24:52,206 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 20:24:52,207 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 51 [2020-09-24 20:24:52,207 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:52,208 INFO L225 Difference]: With dead ends: 108 [2020-09-24 20:24:52,208 INFO L226 Difference]: Without dead ends: 102 [2020-09-24 20:24:52,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=180, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:24:52,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-09-24 20:24:52,217 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 86. [2020-09-24 20:24:52,217 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-09-24 20:24:52,218 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 143 transitions. [2020-09-24 20:24:52,219 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 143 transitions. Word has length 51 [2020-09-24 20:24:52,219 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:52,219 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 143 transitions. [2020-09-24 20:24:52,219 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:24:52,219 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 143 transitions. [2020-09-24 20:24:52,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:24:52,221 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:52,221 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] [2020-09-24 20:24:52,222 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-24 20:24:52,222 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:52,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:52,222 INFO L82 PathProgramCache]: Analyzing trace with hash -21491290, now seen corresponding path program 7 times [2020-09-24 20:24:52,222 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:52,223 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136475151] [2020-09-24 20:24:52,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:52,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:52,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:52,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:52,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:52,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:52,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking...