/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 --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=1000 --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_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 12:22:53,973 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 12:22:53,976 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 12:22:54,003 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 12:22:54,003 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 12:22:54,004 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 12:22:54,006 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 12:22:54,008 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 12:22:54,009 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 12:22:54,010 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 12:22:54,012 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 12:22:54,013 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 12:22:54,013 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 12:22:54,014 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 12:22:54,015 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 12:22:54,017 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 12:22:54,018 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 12:22:54,019 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 12:22:54,020 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 12:22:54,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 12:22:54,024 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 12:22:54,025 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 12:22:54,026 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 12:22:54,027 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 12:22:54,030 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 12:22:54,030 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 12:22:54,030 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 12:22:54,031 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 12:22:54,032 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 12:22:54,033 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 12:22:54,033 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 12:22:54,034 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 12:22:54,035 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 12:22:54,036 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 12:22:54,037 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 12:22:54,037 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 12:22:54,038 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 12:22:54,038 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 12:22:54,038 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 12:22:54,040 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 12:22:54,040 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 12:22:54,041 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 [2020-09-21 12:22:54,068 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 12:22:54,068 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 12:22:54,069 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 12:22:54,070 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 12:22:54,070 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 12:22:54,070 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 12:22:54,070 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 12:22:54,071 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 12:22:54,071 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 12:22:54,071 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 12:22:54,071 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 12:22:54,071 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 12:22:54,072 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 12:22:54,072 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 12:22:54,072 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 12:22:54,072 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 12:22:54,072 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 12:22:54,073 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 12:22:54,073 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 12:22:54,073 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 12:22:54,073 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 12:22:54,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 12:22:54,074 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 12:22:54,074 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 12:22:54,074 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 12:22:54,074 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 12:22:54,074 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 12:22:54,075 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 12:22:54,075 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 12:22:54,075 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.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=1000;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=1000;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=1000;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=1000;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=1000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-21 12:22:54,542 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 12:22:54,567 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 12:22:54,573 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 12:22:54,574 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 12:22:54,576 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 12:22:54,578 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-21 12:22:54,654 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e80a5b53/bdee9ad253da4c50bfd349165a7d1a93/FLAGb4ed6b905 [2020-09-21 12:22:55,126 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 12:22:55,127 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-21 12:22:55,135 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e80a5b53/bdee9ad253da4c50bfd349165a7d1a93/FLAGb4ed6b905 [2020-09-21 12:22:55,476 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7e80a5b53/bdee9ad253da4c50bfd349165a7d1a93 [2020-09-21 12:22:55,490 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 12:22:55,497 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 12:22:55,498 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 12:22:55,498 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 12:22:55,503 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 12:22:55,504 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,508 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@697b2ada and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55, skipping insertion in model container [2020-09-21 12:22:55,508 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,517 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 12:22:55,542 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 12:22:55,811 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:22:55,817 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 12:22:55,835 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 12:22:55,852 INFO L208 MainTranslator]: Completed translation [2020-09-21 12:22:55,853 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55 WrapperNode [2020-09-21 12:22:55,853 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 12:22:55,854 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 12:22:55,854 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 12:22:55,854 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 12:22:55,869 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,869 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,875 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,876 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,952 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,955 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,956 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (1/1) ... [2020-09-21 12:22:55,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 12:22:55,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 12:22:55,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 12:22:55,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 12:22:55,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (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 [2020-09-21 12:22:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 12:22:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 12:22:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-21 12:22:56,039 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-21 12:22:56,040 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 12:22:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 12:22:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 12:22:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-21 12:22:56,040 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-21 12:22:56,041 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 12:22:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 12:22:56,042 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 12:22:56,361 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 12:22:56,362 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 12:22:56,370 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:56 BoogieIcfgContainer [2020-09-21 12:22:56,373 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 12:22:56,376 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 12:22:56,376 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 12:22:56,382 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 12:22:56,385 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 12:22:55" (1/3) ... [2020-09-21 12:22:56,386 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:56, skipping insertion in model container [2020-09-21 12:22:56,386 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 12:22:55" (2/3) ... [2020-09-21 12:22:56,387 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3bfca7b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 12:22:56, skipping insertion in model container [2020-09-21 12:22:56,387 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 12:22:56" (3/3) ... [2020-09-21 12:22:56,389 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-09-21 12:22:56,400 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 12:22:56,410 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 12:22:56,432 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 12:22:56,469 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 12:22:56,470 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 12:22:56,470 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 12:22:56,470 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 12:22:56,470 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 12:22:56,471 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 12:22:56,471 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 12:22:56,471 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 12:22:56,498 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-21 12:22:56,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 12:22:56,505 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:56,506 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:56,507 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:56,513 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:56,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-09-21 12:22:56,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:56,523 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1620222805] [2020-09-21 12:22:56,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:56,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:56,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:56,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 12:22:56,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:22:56,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-21 12:22:56,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:56,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:22:56,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:56,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-21 12:22:56,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:56,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:56,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:56,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:56,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:56,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:22:56,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:56,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:56,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:56,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:56,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:56,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:56,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:56,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:56,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:56,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:22:56,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:56,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:56,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:56,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:56,933 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:22:56,934 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1620222805] [2020-09-21 12:22:56,936 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:22:56,936 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:22:56,937 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98071885] [2020-09-21 12:22:56,943 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:22:56,944 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:56,961 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:22:56,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:22:56,965 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-21 12:22:57,087 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:57,088 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-09-21 12:22:57,088 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:22:57,090 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 12:22:57,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:57,103 INFO L225 Difference]: With dead ends: 44 [2020-09-21 12:22:57,104 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 12:22:57,108 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 [2020-09-21 12:22:57,130 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 12:22:57,161 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 12:22:57,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:22:57,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 12:22:57,167 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-09-21 12:22:57,167 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:57,167 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 12:22:57,167 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:22:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 12:22:57,169 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 12:22:57,170 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:57,170 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:57,170 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 12:22:57,171 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:57,171 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:57,171 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-09-21 12:22:57,172 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:57,172 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [414344649] [2020-09-21 12:22:57,172 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:57,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,360 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 12:22:57,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:22:57,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-21 12:22:57,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:57,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-21 12:22:57,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-09-21 12:22:57,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:57,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:57,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:57,399 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:22:57,401 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,401 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:57,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:57,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,462 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:57,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:57,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:57,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:22:57,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-21 12:22:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:57,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:57,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:57,491 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 12:22:57,492 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [414344649] [2020-09-21 12:22:57,494 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 12:22:57,494 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 12:22:57,494 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [57526305] [2020-09-21 12:22:57,497 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 12:22:57,497 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:57,498 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 12:22:57,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:22:57,498 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-09-21 12:22:57,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:57,525 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-09-21 12:22:57,525 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 12:22:57,525 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 12:22:57,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:57,527 INFO L225 Difference]: With dead ends: 36 [2020-09-21 12:22:57,528 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 12:22:57,530 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 12:22:57,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 12:22:57,538 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-21 12:22:57,538 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 12:22:57,540 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 12:22:57,540 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-09-21 12:22:57,541 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:57,543 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 12:22:57,543 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 12:22:57,543 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 12:22:57,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 12:22:57,545 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:57,545 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:22:57,545 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 12:22:57,545 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:57,546 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:57,547 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-09-21 12:22:57,547 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:57,548 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176968929] [2020-09-21 12:22:57,548 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:57,569 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:57,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:57,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:58,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 12:22:58,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:22:58,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:22:58,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:58,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-21 12:22:58,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:58,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:58,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:58,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:58,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:58,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:58,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:58,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:22:58,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:58,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:58,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:58,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:58,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:58,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,651 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:58,652 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:22:58,652 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:58,652 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-21 12:22:58,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:22:58,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:22:58,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:58,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:58,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:58,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:58,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:58,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:58,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:22:58,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:22:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:58,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:58,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:58,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:22:58,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:58,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:58,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:58,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:58,726 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:22:58,726 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:58,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:22:58,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:58,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:22:58,735 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:22:58,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176968929] [2020-09-21 12:22:58,736 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:58,739 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:22:58,740 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [389726720] [2020-09-21 12:22:58,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:22:58,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:58,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:22:58,742 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:22:58,743 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 6 states. [2020-09-21 12:22:58,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:22:58,858 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-21 12:22:58,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:22:58,860 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-09-21 12:22:58,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:22:58,862 INFO L225 Difference]: With dead ends: 58 [2020-09-21 12:22:58,862 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 12:22:58,863 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 [2020-09-21 12:22:58,864 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 12:22:58,876 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 12:22:58,876 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 12:22:58,879 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-09-21 12:22:58,880 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-09-21 12:22:58,881 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:22:58,881 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-09-21 12:22:58,881 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:22:58,882 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-09-21 12:22:58,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 12:22:58,886 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:22:58,886 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] [2020-09-21 12:22:58,886 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 12:22:58,886 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:22:58,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:22:58,887 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-09-21 12:22:58,888 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:22:58,889 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788651276] [2020-09-21 12:22:58,889 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:22:58,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:58,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:58,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:59,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 12:22:59,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:22:59,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 614 [2020-09-21 12:22:59,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:59,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:22:59,522 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-21 12:22:59,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:59,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:22:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:59,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:59,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:22:59,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:59,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:22:59,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:59,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:22:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:59,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:22:59,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:59,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:22:59,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:59,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:22:59,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:22:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-21 12:22:59,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:22:59,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:22:59,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:22:59,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:59,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:22:59,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:59,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:59,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:22:59,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:59,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 12:22:59,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:22:59,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:59,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:22:59,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:22:59,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:22:59,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:22:59,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:22:59,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:22:59,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:22:59,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:22:59,841 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:22:59,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:22:59,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:22:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:22:59,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:22:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:22:59,848 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 12:22:59,849 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788651276] [2020-09-21 12:22:59,850 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:22:59,850 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:22:59,850 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601798298] [2020-09-21 12:22:59,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:22:59,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:22:59,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:22:59,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:22:59,852 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-09-21 12:23:00,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:00,007 INFO L93 Difference]: Finished difference Result 43 states and 55 transitions. [2020-09-21 12:23:00,007 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:23:00,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-21 12:23:00,008 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:00,010 INFO L225 Difference]: With dead ends: 43 [2020-09-21 12:23:00,010 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:23:00,010 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 [2020-09-21 12:23:00,011 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:23:00,019 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 37. [2020-09-21 12:23:00,019 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-09-21 12:23:00,021 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 48 transitions. [2020-09-21 12:23:00,021 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 48 transitions. Word has length 27 [2020-09-21 12:23:00,021 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:00,022 INFO L479 AbstractCegarLoop]: Abstraction has 37 states and 48 transitions. [2020-09-21 12:23:00,022 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:23:00,022 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 48 transitions. [2020-09-21 12:23:00,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 12:23:00,024 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:00,024 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-21 12:23:00,024 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 12:23:00,024 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:00,025 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:00,025 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-09-21 12:23:00,025 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:00,025 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1143016489] [2020-09-21 12:23:00,025 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:00,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:00,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:00,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,033 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:01,033 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 12:23:01,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:01,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:01,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:01,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 12:23:01,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:01,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:01,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:01,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:01,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,047 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:01,047 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:01,047 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:01,047 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:01,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:01,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:01,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:01,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:01,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:01,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:01,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 12:23:01,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:01,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 863 [2020-09-21 12:23:01,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:01,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 12:23:01,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:01,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:01,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:01,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:01,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:01,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 12:23:01,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:01,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-21 12:23:01,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:01,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 12:23:01,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:01,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:01,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:02,000 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:02,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:02,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:02,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:23:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:02,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 12:23:02,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:02,031 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:02,031 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:02,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:02,032 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:02,032 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:02,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 12:23:02,035 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:02,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:02,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:02,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:02,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:02,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:02,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:02,046 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 12:23:02,047 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1143016489] [2020-09-21 12:23:02,047 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:02,047 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 12:23:02,047 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1570697846] [2020-09-21 12:23:02,048 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 12:23:02,048 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:02,048 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 12:23:02,048 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 12:23:02,049 INFO L87 Difference]: Start difference. First operand 37 states and 48 transitions. Second operand 6 states. [2020-09-21 12:23:02,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:02,137 INFO L93 Difference]: Finished difference Result 70 states and 100 transitions. [2020-09-21 12:23:02,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 12:23:02,137 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-21 12:23:02,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:02,139 INFO L225 Difference]: With dead ends: 70 [2020-09-21 12:23:02,139 INFO L226 Difference]: Without dead ends: 39 [2020-09-21 12:23:02,140 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 [2020-09-21 12:23:02,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2020-09-21 12:23:02,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2020-09-21 12:23:02,148 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:23:02,149 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-09-21 12:23:02,149 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 39 [2020-09-21 12:23:02,150 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:02,150 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-09-21 12:23:02,150 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 12:23:02,150 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-09-21 12:23:02,151 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 12:23:02,152 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:02,152 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-21 12:23:02,152 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 12:23:02,152 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:02,153 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:02,153 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-09-21 12:23:02,153 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:02,153 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1993391481] [2020-09-21 12:23:02,153 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:02,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:02,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:03,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 12:23:03,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:03,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:23:03,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:03,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-21 12:23:03,166 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:03,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:03,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:03,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:03,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:03,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:03,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:03,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:03,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:03,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:03,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:03,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:03,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:04,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:23:04,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:23:04,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:04,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-21 12:23:04,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:04,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:04,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:04,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:04,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:04,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:04,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-09-21 12:23:04,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:04,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:04,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:04,294 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:04,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:04,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:04,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:04,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:04,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:04,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:04,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:04,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:04,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:04,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:04,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:04,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:04,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:04,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:04,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:04,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:04,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:04,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:04,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:04,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:04,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:04,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:04,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:04,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:23:04,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:04,344 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:23:04,345 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1993391481] [2020-09-21 12:23:04,345 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:04,345 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:23:04,345 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [815061644] [2020-09-21 12:23:04,346 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:23:04,346 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:04,346 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:23:04,347 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:23:04,347 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 7 states. [2020-09-21 12:23:04,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:04,473 INFO L93 Difference]: Finished difference Result 49 states and 62 transitions. [2020-09-21 12:23:04,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:23:04,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 40 [2020-09-21 12:23:04,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:04,475 INFO L225 Difference]: With dead ends: 49 [2020-09-21 12:23:04,475 INFO L226 Difference]: Without dead ends: 45 [2020-09-21 12:23:04,476 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 [2020-09-21 12:23:04,476 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-21 12:23:04,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-09-21 12:23:04,484 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:23:04,489 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-09-21 12:23:04,489 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 40 [2020-09-21 12:23:04,490 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:04,490 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-09-21 12:23:04,490 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:23:04,490 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-09-21 12:23:04,491 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 12:23:04,492 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:04,492 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] [2020-09-21 12:23:04,492 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 12:23:04,492 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:04,492 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:04,493 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-09-21 12:23:04,493 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:04,493 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [5184871] [2020-09-21 12:23:04,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:04,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,524 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:04,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:05,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 12:23:05,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:05,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:05,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:05,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:05,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-21 12:23:05,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:05,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:05,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:05,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,516 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:05,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:05,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:05,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:05,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:05,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:05,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:05,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:05,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:05,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:06,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:06,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1003 [2020-09-21 12:23:06,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:06,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:23:06,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:06,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,601 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:06,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:06,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-21 12:23:06,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:06,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:06,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:06,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:06,613 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:06,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:06,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:06,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:06,617 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:06,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,622 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:06,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:06,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:06,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:06,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:06,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:06,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:06,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:06,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:06,649 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:06,649 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:06,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 12:23:06,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:06,650 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:06,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:06,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:06,684 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-21 12:23:06,684 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [5184871] [2020-09-21 12:23:06,685 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:06,685 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 12:23:06,685 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1611201478] [2020-09-21 12:23:06,686 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 12:23:06,686 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:06,686 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 12:23:06,687 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 12:23:06,687 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 7 states. [2020-09-21 12:23:06,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:06,847 INFO L93 Difference]: Finished difference Result 46 states and 58 transitions. [2020-09-21 12:23:06,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:23:06,848 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 41 [2020-09-21 12:23:06,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:06,850 INFO L225 Difference]: With dead ends: 46 [2020-09-21 12:23:06,850 INFO L226 Difference]: Without dead ends: 42 [2020-09-21 12:23:06,850 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 [2020-09-21 12:23:06,851 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-21 12:23:06,857 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 39. [2020-09-21 12:23:06,858 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-21 12:23:06,870 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 50 transitions. [2020-09-21 12:23:06,870 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 50 transitions. Word has length 41 [2020-09-21 12:23:06,871 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:06,871 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 50 transitions. [2020-09-21 12:23:06,871 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 12:23:06,871 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 50 transitions. [2020-09-21 12:23:06,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 12:23:06,873 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:06,873 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:06,873 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 12:23:06,873 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:06,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:06,874 INFO L82 PathProgramCache]: Analyzing trace with hash 794281190, now seen corresponding path program 1 times [2020-09-21 12:23:06,874 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:06,874 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780069516] [2020-09-21 12:23:06,874 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:06,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:06,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:06,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:07,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 12:23:07,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:07,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:07,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-21 12:23:07,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:07,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:07,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:07,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:07,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:07,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:07,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:07,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:07,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:07,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:07,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:07,905 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:07,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,907 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:08,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:23:08,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:08,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:08,908 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:08,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:08,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:08,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:08,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:08,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:08,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:08,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:09,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:09,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-21 12:23:09,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:09,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:09,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:09,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:09,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:09,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:09,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:23:09,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:09,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:09,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:09,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:09,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:09,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:09,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:09,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:09,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:09,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:09,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:09,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:09,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:09,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-21 12:23:09,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:23:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:09,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:09,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,387 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:09,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:09,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:09,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:09,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:09,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:09,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:09,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:09,409 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:09,409 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:09,409 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:23:09,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:09,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:09,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:09,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:09,410 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:09,421 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 10 proven. 16 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-21 12:23:09,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780069516] [2020-09-21 12:23:09,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:09,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:23:09,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1170389299] [2020-09-21 12:23:09,423 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:23:09,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:09,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:23:09,424 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:23:09,424 INFO L87 Difference]: Start difference. First operand 39 states and 50 transitions. Second operand 8 states. [2020-09-21 12:23:09,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:09,646 INFO L93 Difference]: Finished difference Result 84 states and 129 transitions. [2020-09-21 12:23:09,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 12:23:09,647 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-21 12:23:09,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:09,649 INFO L225 Difference]: With dead ends: 84 [2020-09-21 12:23:09,651 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 12:23:09,652 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2020-09-21 12:23:09,652 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 12:23:09,667 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-21 12:23:09,667 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-21 12:23:09,669 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 70 transitions. [2020-09-21 12:23:09,670 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 70 transitions. Word has length 54 [2020-09-21 12:23:09,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:09,671 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 70 transitions. [2020-09-21 12:23:09,671 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:23:09,671 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 70 transitions. [2020-09-21 12:23:09,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-09-21 12:23:09,674 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:09,675 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:09,675 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 12:23:09,675 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:09,675 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:09,676 INFO L82 PathProgramCache]: Analyzing trace with hash 1252569501, now seen corresponding path program 1 times [2020-09-21 12:23:09,676 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:09,676 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [293672878] [2020-09-21 12:23:09,676 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:09,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:09,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:09,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:10,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 127 [2020-09-21 12:23:10,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1015 [2020-09-21 12:23:10,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 12:23:10,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:23:10,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:10,731 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:10,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:10,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:10,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:10,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:10,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:10,735 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:10,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:10,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:10,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:10,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:10,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:10,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:11,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-21 12:23:11,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-21 12:23:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1005 [2020-09-21 12:23:11,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:23:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:23:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:11,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:11,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:11,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:11,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:12,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 12:23:12,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-21 12:23:12,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 846 [2020-09-21 12:23:12,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:12,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 12:23:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:12,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 12:23:12,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:12,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:12,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:12,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:12,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:12,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:12,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 188 [2020-09-21 12:23:12,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:12,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:12,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:12,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:12,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:12,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:12,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:12,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:12,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:12,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:12,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:12,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:12,882 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:12,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:12,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:12,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:12,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:12,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:12,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:23:12,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:12,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:12,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:12,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:12,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:12,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:12,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:12,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:12,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 12:23:12,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:23:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:12,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:12,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 12:23:12,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:12,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:12,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,176 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:13,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:23:13,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:13,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:13,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-21 12:23:13,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:13,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:13,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:13,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:13,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:13,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:13,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:13,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 12:23:13,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:13,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:13,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:13,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:13,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:13,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:13,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:13,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:13,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:13,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:13,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:13,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:13,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:13,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:13,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:13,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:13,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:13,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:13,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:13,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:14,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:14,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:14,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:14,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:14,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:14,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:14,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:14,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:14,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:14,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:14,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:14,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:14,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:14,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:14,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:14,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:14,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:14,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:14,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:14,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:14,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:14,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:14,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:14,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:14,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:14,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:14,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:14,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:14,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:14,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:14,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:14,065 INFO L134 CoverageAnalysis]: Checked inductivity of 184 backedges. 24 proven. 47 refuted. 0 times theorem prover too weak. 113 trivial. 0 not checked. [2020-09-21 12:23:14,065 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [293672878] [2020-09-21 12:23:14,065 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:14,065 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 12:23:14,066 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [361843529] [2020-09-21 12:23:14,066 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 12:23:14,067 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:14,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 12:23:14,067 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 12:23:14,067 INFO L87 Difference]: Start difference. First operand 51 states and 70 transitions. Second operand 8 states. [2020-09-21 12:23:14,169 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:14,169 INFO L93 Difference]: Finished difference Result 99 states and 153 transitions. [2020-09-21 12:23:14,170 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 12:23:14,170 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 94 [2020-09-21 12:23:14,171 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:14,171 INFO L225 Difference]: With dead ends: 99 [2020-09-21 12:23:14,172 INFO L226 Difference]: Without dead ends: 54 [2020-09-21 12:23:14,172 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 [2020-09-21 12:23:14,173 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-21 12:23:14,180 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-09-21 12:23:14,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-21 12:23:14,181 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 69 transitions. [2020-09-21 12:23:14,181 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 69 transitions. Word has length 94 [2020-09-21 12:23:14,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:14,182 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 69 transitions. [2020-09-21 12:23:14,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 12:23:14,182 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 69 transitions. [2020-09-21 12:23:14,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 83 [2020-09-21 12:23:14,183 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:14,184 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 4, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:14,184 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 12:23:14,184 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:14,184 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:14,184 INFO L82 PathProgramCache]: Analyzing trace with hash -908952008, now seen corresponding path program 1 times [2020-09-21 12:23:14,185 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:14,185 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099047387] [2020-09-21 12:23:14,185 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:14,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:14,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:14,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-21 12:23:15,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-21 12:23:15,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1004 [2020-09-21 12:23:15,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:15,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 12:23:15,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:15,240 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:15,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:15,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:15,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:15,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:15,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:15,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:15,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:15,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:15,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:15,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,318 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:15,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:16,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-21 12:23:16,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:16,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:23:16,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 12:23:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:16,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-09-21 12:23:16,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:16,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:16,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:16,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:16,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:17,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:17,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:17,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:17,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:17,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:17,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 12:23:17,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:17,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:17,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:17,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:17,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 12:23:17,355 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:17,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:17,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:17,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:17,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 12:23:17,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:17,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:17,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:17,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:17,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:17,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:17,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:17,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:17,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:17,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:17,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:17,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,372 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:17,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:17,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:17,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:17,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:17,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:17,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:17,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:17,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:17,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-21 12:23:17,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:17,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:17,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:17,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 12:23:17,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:17,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:17,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:18,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 12:23:18,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-21 12:23:18,440 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:23:18,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:18,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:18,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 12:23:18,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:18,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:18,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:18,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:18,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:18,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:18,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-21 12:23:18,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:18,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:18,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:18,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:18,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:18,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:18,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:18,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:18,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:18,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:18,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:18,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:18,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:18,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:18,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:18,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:18,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:18,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:18,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:18,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:18,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:18,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:18,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:18,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:18,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,546 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:18,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:18,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-21 12:23:18,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 12:23:18,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:18,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:18,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:18,597 INFO L134 CoverageAnalysis]: Checked inductivity of 132 backedges. 43 proven. 27 refuted. 0 times theorem prover too weak. 62 trivial. 0 not checked. [2020-09-21 12:23:18,597 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2099047387] [2020-09-21 12:23:18,597 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:18,598 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:23:18,598 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096712019] [2020-09-21 12:23:18,599 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:23:18,599 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:18,600 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:23:18,601 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=72, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:23:18,601 INFO L87 Difference]: Start difference. First operand 51 states and 69 transitions. Second operand 10 states. [2020-09-21 12:23:18,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:18,857 INFO L93 Difference]: Finished difference Result 125 states and 212 transitions. [2020-09-21 12:23:18,859 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:23:18,859 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 82 [2020-09-21 12:23:18,859 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:18,860 INFO L225 Difference]: With dead ends: 125 [2020-09-21 12:23:18,860 INFO L226 Difference]: Without dead ends: 80 [2020-09-21 12:23:18,864 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 28 SyntacticMatches, 2 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-21 12:23:18,865 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-21 12:23:18,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 69. [2020-09-21 12:23:18,883 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 12:23:18,885 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 101 transitions. [2020-09-21 12:23:18,885 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 101 transitions. Word has length 82 [2020-09-21 12:23:18,885 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:18,886 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 101 transitions. [2020-09-21 12:23:18,887 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:23:18,888 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 101 transitions. [2020-09-21 12:23:18,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-09-21 12:23:18,890 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:18,890 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:18,890 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 12:23:18,891 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:18,891 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:18,891 INFO L82 PathProgramCache]: Analyzing trace with hash -152987330, now seen corresponding path program 1 times [2020-09-21 12:23:18,891 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:18,891 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [728108058] [2020-09-21 12:23:18,893 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:18,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:18,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:18,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,917 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:19,917 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-21 12:23:19,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-21 12:23:19,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:19,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:19,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 12:23:19,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-21 12:23:19,918 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:19,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 12:23:19,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:19,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:19,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 12:23:19,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 12:23:19,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:19,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:19,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:19,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:19,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 12:23:19,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:19,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:19,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:20,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:20,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 133 [2020-09-21 12:23:20,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-21 12:23:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-09-21 12:23:20,951 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 12:23:20,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:20,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:20,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:20,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:21,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:21,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:23:21,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-21 12:23:21,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1000 [2020-09-21 12:23:21,968 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 12:23:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 12:23:21,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-21 12:23:21,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:21,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:21,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,236 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:22,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:22,236 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 236 [2020-09-21 12:23:22,237 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 12:23:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,237 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 12:23:22,237 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:22,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:22,292 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,292 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 12:23:22,292 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 12:23:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 12:23:22,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:22,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:22,329 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,329 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 12:23:22,329 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:22,330 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:22,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,399 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,399 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:22,399 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-21 12:23:22,400 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-21 12:23:22,400 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 12:23:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 12:23:22,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 12:23:22,401 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:22,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:22,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 12:23:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:22,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:22,478 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:22,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:22,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 12:23:22,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 12:23:22,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:22,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 12:23:22,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:22,485 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 50 [2020-09-21 12:23:22,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:22,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:22,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 12:23:23,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-21 12:23:23,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 999 [2020-09-21 12:23:23,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 60 [2020-09-21 12:23:23,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:23,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:23,497 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:23,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:23,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:23,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 12:23:23,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:23,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:23,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:23,512 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:23,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:23,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:23,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:23,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 12:23:23,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:23,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:23,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:23,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:23,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:23,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,523 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:23,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:23,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:23,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:23,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:23,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:23,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 12:23:23,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 12:23:23,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:23,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 12:23:23,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:23,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 12:23:23,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:23,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:23,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:23,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 12:23:23,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:23,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 12:23:23,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:23,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 12:23:23,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:23,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:23,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:23,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:23,554 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 12:23:23,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 12:23:23,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-21 12:23:23,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 1000 [2020-09-21 12:23:23,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 12:23:23,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 12:23:23,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 12:23:23,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-21 12:23:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 12:23:23,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 12:23:23,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 12:23:23,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 12:23:23,617 INFO L134 CoverageAnalysis]: Checked inductivity of 289 backedges. 32 proven. 85 refuted. 0 times theorem prover too weak. 172 trivial. 0 not checked. [2020-09-21 12:23:23,617 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [728108058] [2020-09-21 12:23:23,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 12:23:23,618 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 12:23:23,618 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416488325] [2020-09-21 12:23:23,619 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 12:23:23,619 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 12:23:23,619 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 12:23:23,619 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-21 12:23:23,619 INFO L87 Difference]: Start difference. First operand 69 states and 101 transitions. Second operand 10 states. [2020-09-21 12:23:23,899 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 12:23:23,900 INFO L93 Difference]: Finished difference Result 147 states and 261 transitions. [2020-09-21 12:23:23,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-21 12:23:23,901 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 108 [2020-09-21 12:23:23,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 12:23:23,904 INFO L225 Difference]: With dead ends: 147 [2020-09-21 12:23:23,904 INFO L226 Difference]: Without dead ends: 82 [2020-09-21 12:23:23,906 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2020-09-21 12:23:23,907 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-21 12:23:23,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 80. [2020-09-21 12:23:23,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-09-21 12:23:23,937 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 118 transitions. [2020-09-21 12:23:23,937 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 118 transitions. Word has length 108 [2020-09-21 12:23:23,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 12:23:23,938 INFO L479 AbstractCegarLoop]: Abstraction has 80 states and 118 transitions. [2020-09-21 12:23:23,938 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 12:23:23,938 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 118 transitions. [2020-09-21 12:23:23,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-21 12:23:23,943 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 12:23:23,943 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 12:23:23,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 12:23:23,945 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 12:23:23,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 12:23:23,946 INFO L82 PathProgramCache]: Analyzing trace with hash -1156896337, now seen corresponding path program 2 times [2020-09-21 12:23:23,946 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 12:23:23,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [775139119] [2020-09-21 12:23:23,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 12:23:23,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 12:23:23,966 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 12:23:23,967 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 12:23:23,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 12:23:24,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 12:23:24 BoogieIcfgContainer [2020-09-21 12:23:24,011 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 12:23:24,015 INFO L168 Benchmark]: Toolchain (without parser) took 28520.94 ms. Allocated memory was 138.9 MB in the beginning and 392.7 MB in the end (delta: 253.8 MB). Free memory was 102.2 MB in the beginning and 316.1 MB in the end (delta: -214.0 MB). Peak memory consumption was 39.8 MB. Max. memory is 7.1 GB. [2020-09-21 12:23:24,022 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-21 12:23:24,023 INFO L168 Benchmark]: CACSL2BoogieTranslator took 355.35 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. [2020-09-21 12:23:24,024 INFO L168 Benchmark]: Boogie Preprocessor took 104.59 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-21 12:23:24,025 INFO L168 Benchmark]: RCFGBuilder took 414.41 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 166.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. [2020-09-21 12:23:24,027 INFO L168 Benchmark]: TraceAbstraction took 27635.16 ms. Allocated memory was 201.3 MB in the beginning and 392.7 MB in the end (delta: 191.4 MB). Free memory was 166.0 MB in the beginning and 316.1 MB in the end (delta: -150.1 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. [2020-09-21 12:23:24,041 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 138.9 MB. Free memory was 120.5 MB in the beginning and 120.2 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 355.35 ms. Allocated memory is still 138.9 MB. Free memory was 101.5 MB in the beginning and 92.0 MB in the end (delta: 9.5 MB). Peak memory consumption was 9.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 104.59 ms. Allocated memory was 138.9 MB in the beginning and 201.3 MB in the end (delta: 62.4 MB). Free memory was 92.0 MB in the beginning and 180.4 MB in the end (delta: -88.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 414.41 ms. Allocated memory is still 201.3 MB. Free memory was 180.4 MB in the beginning and 166.7 MB in the end (delta: 13.7 MB). Peak memory consumption was 13.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 27635.16 ms. Allocated memory was 201.3 MB in the beginning and 392.7 MB in the end (delta: 191.4 MB). Free memory was 166.0 MB in the beginning and 316.1 MB in the end (delta: -150.1 MB). Peak memory consumption was 41.2 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 4; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 3 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 27.5s, OverallIterations: 12, TraceHistogramMax: 10, AutomataDifference: 1.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 313 SDtfs, 186 SDslu, 1079 SDs, 0 SdLazy, 902 SolverSat, 61 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.9s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 266 GetRequests, 183 SyntacticMatches, 2 SemanticMatches, 81 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=80occurred in iteration=11, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 11 MinimizatonAttempts, 31 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 25.0s InterpolantComputationTime, 606 NumberOfCodeBlocks, 606 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 527 ConstructedInterpolants, 0 QuantifiedInterpolants, 74473 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 11 InterpolantComputations, 2 PerfectInterpolantSequences, 524/716 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...