/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=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:13:33,355 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:13:33,360 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:13:33,404 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:13:33,405 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:13:33,416 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:13:33,419 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:13:33,422 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:13:33,425 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:13:33,429 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:13:33,430 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:13:33,433 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:13:33,433 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:13:33,436 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:13:33,438 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:13:33,440 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:13:33,442 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:13:33,443 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:13:33,445 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:13:33,453 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:13:33,455 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:13:33,457 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:13:33,458 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:13:33,459 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:13:33,463 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:13:33,463 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:13:33,464 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:13:33,466 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:13:33,467 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:13:33,469 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:13:33,469 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:13:33,470 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:13:33,471 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:13:33,472 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:13:33,473 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:13:33,473 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:13:33,474 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:13:33,474 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:13:33,474 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:13:33,475 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:13:33,477 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:13:33,478 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 18:13:33,526 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:13:33,526 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:13:33,528 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:13:33,528 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:13:33,528 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:13:33,529 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:13:33,529 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:13:33,529 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:13:33,530 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:13:33,530 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:13:33,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:13:33,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:13:33,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:13:33,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:13:33,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:13:33,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:13:33,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:13:33,532 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:13:33,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:13:33,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:13:33,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:13:33,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:13:33,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:13:33,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:13:33,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:13:33,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:13:33,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:13:33,535 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:13:33,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:13:33,535 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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;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=SMALLEST;log-additional-information=true; [2020-09-24 18:13:33,970 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:13:33,987 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:13:33,992 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:13:33,994 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:13:33,994 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:13:33,995 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-24 18:13:34,071 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d17f44601/5d3f037e1ca94defa68d7cd872797305/FLAGa957650a1 [2020-09-24 18:13:34,594 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:13:34,594 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-1.c [2020-09-24 18:13:34,603 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d17f44601/5d3f037e1ca94defa68d7cd872797305/FLAGa957650a1 [2020-09-24 18:13:34,933 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/d17f44601/5d3f037e1ca94defa68d7cd872797305 [2020-09-24 18:13:34,946 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:13:34,953 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:13:34,954 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:34,955 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:13:34,959 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:13:34,961 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:34" (1/1) ... [2020-09-24 18:13:34,965 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@678923a3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:34, skipping insertion in model container [2020-09-24 18:13:34,966 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:34" (1/1) ... [2020-09-24 18:13:34,976 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:13:35,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:13:35,235 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:35,241 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:13:35,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:35,274 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:13:35,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35 WrapperNode [2020-09-24 18:13:35,275 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:35,276 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:13:35,276 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:13:35,276 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:13:35,290 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,290 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,296 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,296 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,379 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,383 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,388 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,390 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:13:35,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:13:35,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:13:35,391 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:13:35,392 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (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 18:13:35,462 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:13:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:13:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 18:13:35,463 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 18:13:35,464 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:13:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:13:35,464 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:13:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 18:13:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 18:13:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:13:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:13:35,465 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:13:35,699 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:13:35,700 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:13:35,706 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:35 BoogieIcfgContainer [2020-09-24 18:13:35,707 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:13:35,708 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:13:35,709 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:13:35,712 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:13:35,713 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:13:34" (1/3) ... [2020-09-24 18:13:35,714 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7b068c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:35, skipping insertion in model container [2020-09-24 18:13:35,714 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (2/3) ... [2020-09-24 18:13:35,715 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@7b7b068c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:35, skipping insertion in model container [2020-09-24 18:13:35,715 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:35" (3/3) ... [2020-09-24 18:13:35,717 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-1.c [2020-09-24 18:13:35,731 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:13:35,744 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:13:35,793 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:13:35,825 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:13:35,826 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:13:35,826 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:13:35,826 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:13:35,826 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:13:35,826 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:13:35,827 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:13:35,827 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:13:35,850 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 18:13:35,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:13:35,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:35,858 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:35,859 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:35,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:35,865 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 18:13:35,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:35,875 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081559244] [2020-09-24 18:13:35,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:35,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:13:36,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 18:13:36,046 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:36,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:13:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:13:36,102 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:36,104 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:36,109 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,109 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:36,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:36,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:36,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:36,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 18:13:36,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:36,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:36,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:36,175 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 18:13:36,176 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081559244] [2020-09-24 18:13:36,178 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:36,178 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:36,180 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1581553546] [2020-09-24 18:13:36,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:36,186 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:36,202 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:36,203 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:36,206 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 18:13:36,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:36,332 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 18:13:36,333 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:36,335 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:13:36,336 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:36,349 INFO L225 Difference]: With dead ends: 58 [2020-09-24 18:13:36,350 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:13:36,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:36,375 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:13:36,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:13:36,411 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:36,414 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:36,416 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 18:13:36,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:36,417 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:36,417 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:36,417 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:36,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 18:13:36,419 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:36,420 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 18:13:36,420 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:13:36,421 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:36,421 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:36,421 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 18:13:36,421 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:36,422 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788772507] [2020-09-24 18:13:36,422 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:36,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:13:36,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 18:13:36,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:36,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:36,547 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,557 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:36,558 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,558 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 18:13:36,558 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:36,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:36,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:36,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 18:13:36,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:36,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:36,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:36,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,683 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 18:13:36,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788772507] [2020-09-24 18:13:36,684 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:36,684 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:36,684 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2008379937] [2020-09-24 18:13:36,688 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:36,688 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:36,688 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:36,689 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:36,689 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 18:13:36,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:36,787 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 18:13:36,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 18:13:36,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 18:13:36,788 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:36,790 INFO L225 Difference]: With dead ends: 50 [2020-09-24 18:13:36,790 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 18:13:36,791 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:36,792 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 18:13:36,800 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 18:13:36,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:36,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:36,802 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 18:13:36,802 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:36,803 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:36,803 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:36,803 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:36,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 18:13:36,805 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:36,805 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:36,805 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:13:36,806 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:36,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:36,806 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 18:13:36,806 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:36,807 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1804654495] [2020-09-24 18:13:36,807 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:36,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:13:37,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:37,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 582 [2020-09-24 18:13:37,408 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:13:37,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:37,409 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:37,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:37,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:37,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:37,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:37,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:37,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:37,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:37,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:13:37,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:37,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:37,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:37,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:37,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:37,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:13:37,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:37,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:37,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:37,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:37,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:37,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:37,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:37,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:37,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:37,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:37,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:37,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:37,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:37,546 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:37,547 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1804654495] [2020-09-24 18:13:37,547 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:37,547 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:37,548 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1164136224] [2020-09-24 18:13:37,548 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:37,548 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:37,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:37,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:37,549 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 18:13:37,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:37,628 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 18:13:37,629 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:37,629 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 18:13:37,630 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:37,631 INFO L225 Difference]: With dead ends: 82 [2020-09-24 18:13:37,631 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:13:37,633 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:37,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:13:37,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 18:13:37,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:13:37,643 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 18:13:37,644 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 18:13:37,644 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:37,644 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 18:13:37,645 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:37,645 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 18:13:37,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:13:37,647 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:37,647 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:37,647 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:13:37,648 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:37,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:37,648 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 18:13:37,649 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:37,649 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149949056] [2020-09-24 18:13:37,649 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:37,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:37,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,063 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:13:38,063 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:38,063 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 403 [2020-09-24 18:13:38,064 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:38,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:13:38,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:38,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:38,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:38,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:38,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:38,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:38,084 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:38,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:38,085 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:38,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:38,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:38,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 321 [2020-09-24 18:13:38,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:38,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:38,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:38,451 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:38,452 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:38,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:13:38,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:38,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:38,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:38,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:38,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,487 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,487 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:38,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,488 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 18:13:38,488 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:38,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:38,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:38,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:38,518 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:38,518 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149949056] [2020-09-24 18:13:38,519 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:38,519 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:13:38,519 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1623281154] [2020-09-24 18:13:38,521 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:38,522 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:38,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:38,523 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:38,523 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 18:13:38,659 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:38,659 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 18:13:38,659 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:38,660 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 18:13:38,660 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:38,661 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:13:38,662 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:13:38,662 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:38,663 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:13:38,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 18:13:38,669 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 18:13:38,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 18:13:38,671 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 18:13:38,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:38,672 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 18:13:38,672 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:38,672 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 18:13:38,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:13:38,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:38,674 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:38,674 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:13:38,674 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:38,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:38,675 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 18:13:38,675 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:38,675 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [936520205] [2020-09-24 18:13:38,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:38,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 18:13:39,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:39,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 447 [2020-09-24 18:13:39,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:13:39,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:39,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:13:39,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:39,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:39,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:39,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:39,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:39,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:39,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:39,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:39,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:39,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:13:39,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:39,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 18:13:39,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:13:39,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 18:13:39,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:39,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:39,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:39,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:39,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:13:39,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:39,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:39,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:39,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:39,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:39,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:39,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-24 18:13:39,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:39,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:39,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:39,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:39,411 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:13:39,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [936520205] [2020-09-24 18:13:39,412 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:39,412 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:39,412 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [519627951] [2020-09-24 18:13:39,413 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:39,413 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:39,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:39,414 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:39,414 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 6 states. [2020-09-24 18:13:39,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:39,523 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-24 18:13:39,523 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:39,524 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 18:13:39,524 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:39,525 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:39,525 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:13:39,528 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:13:39,529 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:13:39,544 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 18:13:39,544 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 18:13:39,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 18:13:39,546 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 18:13:39,546 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:39,546 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 18:13:39,546 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:39,547 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 18:13:39,549 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:13:39,549 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:39,549 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:39,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:13:39,550 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:39,550 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:39,550 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 18:13:39,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:39,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [545729007] [2020-09-24 18:13:39,551 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:39,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,558 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:44,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 18:13:44,559 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 18:13:44,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:13:44,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:44,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:13:44,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:44,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:44,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:44,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:44,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:44,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:44,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:44,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:44,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:44,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:44,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:44,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:44,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:13:45,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:45,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1317 [2020-09-24 18:13:45,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:45,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:13:45,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:45,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:45,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:45,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,954 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:45,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:45,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 18:13:45,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:45,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:45,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:45,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:45,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:45,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:45,993 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:45,993 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:45,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:45,994 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:45,994 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:45,994 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:45,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:45,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:46,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:46,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:46,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:46,017 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:46,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:46,018 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:46,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:13:46,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:46,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:46,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:13:46,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:46,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:46,035 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:13:46,035 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [545729007] [2020-09-24 18:13:46,035 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:46,036 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:46,036 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [52016915] [2020-09-24 18:13:46,036 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:46,037 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:46,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:46,037 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:46,037 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-09-24 18:13:46,117 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:46,117 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2020-09-24 18:13:46,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:46,118 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 18:13:46,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:46,119 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:46,119 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:13:46,121 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:46,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:13:46,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:13:46,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:46,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:46,130 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2020-09-24 18:13:46,130 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:46,131 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:46,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:46,131 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:46,133 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:13:46,133 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:46,133 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:46,134 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:13:46,134 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:46,134 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:46,134 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 18:13:46,134 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:46,135 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288508281] [2020-09-24 18:13:46,135 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:46,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:46,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:13:47,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:47,832 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1689 [2020-09-24 18:13:47,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:47,832 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:13:47,833 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:47,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:47,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:47,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:47,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:47,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:47,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:47,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:13:49,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:49,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1675 [2020-09-24 18:13:49,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:49,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:13:49,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:49,580 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:49,583 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:49,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:13:49,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:49,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:49,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:49,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:49,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:49,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:49,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:49,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:49,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:49,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:49,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:13:49,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:49,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:49,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:13:49,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:49,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:13:49,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:49,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:49,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,680 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:13:49,680 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288508281] [2020-09-24 18:13:49,681 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:49,681 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:13:49,681 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [223806487] [2020-09-24 18:13:49,682 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:49,682 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:49,682 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:49,683 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:49,683 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-09-24 18:13:49,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:49,792 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-09-24 18:13:49,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:49,793 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 18:13:49,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:49,794 INFO L225 Difference]: With dead ends: 66 [2020-09-24 18:13:49,794 INFO L226 Difference]: Without dead ends: 60 [2020-09-24 18:13:49,795 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:49,796 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-24 18:13:49,803 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-09-24 18:13:49,803 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:49,804 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:49,804 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 52 [2020-09-24 18:13:49,805 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:49,805 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:49,805 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:49,805 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:49,807 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:13:49,807 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:49,808 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:49,808 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:13:49,808 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:49,808 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:49,808 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 18:13:49,809 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:49,809 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1543081824] [2020-09-24 18:13:49,809 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:49,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,883 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:51,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:52,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:13:54,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:13:54,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:13:54,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:13:54,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:13:54,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:13:54,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,831 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:54,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,833 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:54,833 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:54,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:54,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:54,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:54,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:54,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,877 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:55,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:59,844 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:13:59,844 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:13:59,844 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:13:59,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:13:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:13:59,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:13:59,845 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:59,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:59,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:59,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:00,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:00,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:00,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-09-24 18:14:00,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:00,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:00,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:00,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:00,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:00,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:00,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:00,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:00,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:00,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 18:14:00,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:00,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:00,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:14:00,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:00,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:00,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:00,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:00,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:00,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:00,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:00,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:00,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:00,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:00,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:00,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:00,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-09-24 18:14:00,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:00,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:00,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:00,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:00,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:00,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:00,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:00,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:00,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:00,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:14:00,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:00,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:00,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:00,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:00,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:00,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:00,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:00,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:00,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:00,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:00,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:00,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:00,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:00,631 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 10 proven. 20 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-09-24 18:14:00,632 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1543081824] [2020-09-24 18:14:00,632 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:00,632 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:14:00,633 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [453913116] [2020-09-24 18:14:00,633 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:14:00,634 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:00,634 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:14:00,634 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:14:00,634 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 8 states. [2020-09-24 18:14:00,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:00,831 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2020-09-24 18:14:00,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:14:00,832 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 69 [2020-09-24 18:14:00,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:00,834 INFO L225 Difference]: With dead ends: 120 [2020-09-24 18:14:00,834 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 18:14:00,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:14:00,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 18:14:00,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-24 18:14:00,844 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 18:14:00,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-09-24 18:14:00,845 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 69 [2020-09-24 18:14:00,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:00,846 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-09-24 18:14:00,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:14:00,846 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-09-24 18:14:00,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 18:14:00,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:00,848 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:00,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:14:00,848 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:00,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:00,849 INFO L82 PathProgramCache]: Analyzing trace with hash -271039366, now seen corresponding path program 1 times [2020-09-24 18:14:00,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:00,849 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1856331428] [2020-09-24 18:14:00,849 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:00,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:00,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:00,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:05,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:05,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 18:14:05,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-09-24 18:14:05,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:14:05,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:05,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:14:05,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:05,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:05,878 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:05,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:05,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:05,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:05,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:05,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:05,881 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:05,888 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:05,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:05,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:05,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:10,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:10,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:14:10,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 18:14:10,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5024 [2020-09-24 18:14:10,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:10,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:14:10,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:10,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:10,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:10,931 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:10,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:10,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:10,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:14:12,076 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:14:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1143 [2020-09-24 18:14:12,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:12,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:12,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:12,086 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:12,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:12,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:12,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-09-24 18:14:12,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:12,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:12,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:12,283 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:12,285 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:12,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:12,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:12,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:12,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:12,295 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:12,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:12,303 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:14:12,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:12,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:12,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:12,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:12,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,310 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:12,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:12,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:12,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:12,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:12,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:12,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:14:12,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:16,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,336 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:14:17,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:14:17,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:14:17,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 18:14:17,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:17,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:17,346 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:17,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:14:17,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:17,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:17,370 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:17,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:17,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:17,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:14:17,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:17,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:17,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:14:17,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:17,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:17,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:17,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:17,393 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:17,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:17,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:17,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:17,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:17,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:17,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:17,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:17,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:17,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:17,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:17,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:17,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:17,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:17,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:14:17,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:17,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:17,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:17,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:17,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:17,433 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 30 proven. 58 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-09-24 18:14:17,434 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1856331428] [2020-09-24 18:14:17,434 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:17,434 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:14:17,434 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1440448306] [2020-09-24 18:14:17,435 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:14:17,435 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:17,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:14:17,436 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:14:17,436 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 8 states. [2020-09-24 18:14:17,532 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:17,532 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2020-09-24 18:14:17,532 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:14:17,533 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-09-24 18:14:17,533 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:17,534 INFO L225 Difference]: With dead ends: 144 [2020-09-24 18:14:17,534 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 18:14:17,535 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-24 18:14:17,536 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 18:14:17,542 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-09-24 18:14:17,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 18:14:17,544 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-09-24 18:14:17,544 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 121 [2020-09-24 18:14:17,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:17,544 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-09-24 18:14:17,544 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:14:17,545 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-09-24 18:14:17,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 18:14:17,546 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:17,546 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:17,546 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:14:17,546 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:17,547 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:17,547 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 2 times [2020-09-24 18:14:17,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:17,547 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056836862] [2020-09-24 18:14:17,547 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:17,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:22,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:22,557 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 18:14:22,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:14:22,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:14:22,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:22,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:14:22,558 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-09-24 18:14:22,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:22,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:22,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:22,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:22,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:22,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:22,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:22,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:22,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:22,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:22,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:22,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:22,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:22,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:22,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:22,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:22,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 18:14:27,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:14:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:14:27,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:27,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-09-24 18:14:27,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:27,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-24 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:14:27,650 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:27,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:27,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:14:27,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:27,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:27,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:27,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:27,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:14:27,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:27,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:27,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:27,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:27,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:27,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:27,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:27,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:27,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:27,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:27,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:14:27,693 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,871 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:27,871 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:14:27,871 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 18:14:27,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,872 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:27,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:27,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:27,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:27,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:27,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:27,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:27,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:27,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:27,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:27,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:27,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:27,914 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:14:27,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:27,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:27,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:27,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:27,949 INFO L134 CoverageAnalysis]: Checked inductivity of 88 backedges. 39 proven. 10 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-24 18:14:27,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056836862] [2020-09-24 18:14:27,950 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:27,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:14:27,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396577956] [2020-09-24 18:14:27,951 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:14:27,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:27,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:14:27,952 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:27,952 INFO L87 Difference]: Start difference. First operand 72 states and 87 transitions. Second operand 9 states. [2020-09-24 18:14:28,164 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:28,164 INFO L93 Difference]: Finished difference Result 168 states and 228 transitions. [2020-09-24 18:14:28,165 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 18:14:28,165 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 87 [2020-09-24 18:14:28,166 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:28,167 INFO L225 Difference]: With dead ends: 168 [2020-09-24 18:14:28,167 INFO L226 Difference]: Without dead ends: 89 [2020-09-24 18:14:28,168 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-24 18:14:28,169 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-09-24 18:14:28,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 83. [2020-09-24 18:14:28,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-24 18:14:28,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 101 transitions. [2020-09-24 18:14:28,178 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 101 transitions. Word has length 87 [2020-09-24 18:14:28,178 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:28,178 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 101 transitions. [2020-09-24 18:14:28,178 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:14:28,179 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 101 transitions. [2020-09-24 18:14:28,180 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-09-24 18:14:28,180 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:28,180 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:28,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:14:28,180 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:28,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:28,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1989793720, now seen corresponding path program 1 times [2020-09-24 18:14:28,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:28,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616509218] [2020-09-24 18:14:28,181 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:28,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:28,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:29,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:30,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:30,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking...