/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-adbd35c [2020-10-15 02:09:03,257 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-15 02:09:03,260 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-15 02:09:03,301 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-15 02:09:03,301 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-15 02:09:03,309 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-15 02:09:03,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-15 02:09:03,315 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-15 02:09:03,317 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-15 02:09:03,320 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-15 02:09:03,321 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-15 02:09:03,322 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-15 02:09:03,322 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-15 02:09:03,327 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-15 02:09:03,329 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-15 02:09:03,331 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-15 02:09:03,332 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-15 02:09:03,333 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-15 02:09:03,334 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-15 02:09:03,344 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-15 02:09:03,346 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-15 02:09:03,346 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-15 02:09:03,347 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-15 02:09:03,348 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-15 02:09:03,359 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-15 02:09:03,359 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-15 02:09:03,360 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-15 02:09:03,360 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-15 02:09:03,361 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-15 02:09:03,363 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-15 02:09:03,364 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-15 02:09:03,364 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-15 02:09:03,365 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-15 02:09:03,365 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-15 02:09:03,366 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-15 02:09:03,366 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-15 02:09:03,367 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-15 02:09:03,368 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-15 02:09:03,368 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-15 02:09:03,369 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-15 02:09:03,370 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-15 02:09:03,371 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 [2020-10-15 02:09:03,412 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-15 02:09:03,412 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-15 02:09:03,414 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-15 02:09:03,414 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-15 02:09:03,415 INFO L138 SettingsManager]: * Use SBE=true [2020-10-15 02:09:03,415 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-15 02:09:03,415 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-15 02:09:03,415 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-15 02:09:03,415 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-15 02:09:03,415 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-15 02:09:03,417 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-15 02:09:03,417 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-15 02:09:03,417 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-15 02:09:03,417 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-15 02:09:03,418 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-15 02:09:03,418 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-15 02:09:03,418 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-15 02:09:03,418 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-15 02:09:03,418 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-15 02:09:03,419 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-15 02:09:03,419 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-15 02:09:03,419 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-15 02:09:03,419 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-15 02:09:03,419 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-15 02:09:03,420 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-15 02:09:03,420 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-15 02:09:03,420 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-15 02:09:03,420 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-15 02:09:03,420 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-15 02:09:03,420 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true;unknown-allowed=true; [2020-10-15 02:09:03,756 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-15 02:09:03,768 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-15 02:09:03,772 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-15 02:09:03,773 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-15 02:09:03,774 INFO L275 PluginConnector]: CDTParser initialized [2020-10-15 02:09:03,775 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-10-15 02:09:03,839 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9729b585/492c7f62d5534b3da2cb088375b67c48/FLAG93ce721ce [2020-10-15 02:09:04,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-15 02:09:04,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-2.c [2020-10-15 02:09:04,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9729b585/492c7f62d5534b3da2cb088375b67c48/FLAG93ce721ce [2020-10-15 02:09:04,675 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/a9729b585/492c7f62d5534b3da2cb088375b67c48 [2020-10-15 02:09:04,686 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-15 02:09:04,688 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-15 02:09:04,690 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-15 02:09:04,690 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-15 02:09:04,694 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-15 02:09:04,695 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,698 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5c9c3113 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04, skipping insertion in model container [2020-10-15 02:09:04,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,707 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-15 02:09:04,724 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-15 02:09:04,891 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:09:04,895 INFO L203 MainTranslator]: Completed pre-run [2020-10-15 02:09:04,911 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-15 02:09:04,926 INFO L208 MainTranslator]: Completed translation [2020-10-15 02:09:04,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04 WrapperNode [2020-10-15 02:09:04,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-15 02:09:04,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-15 02:09:04,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-15 02:09:04,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-15 02:09:04,943 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,944 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,949 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,950 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,953 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,956 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,957 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (1/1) ... [2020-10-15 02:09:04,958 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-15 02:09:04,959 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-15 02:09:04,959 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-15 02:09:04,959 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-15 02:09:04,960 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (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 [2020-10-15 02:09:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-15 02:09:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-15 02:09:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-10-15 02:09:05,124 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-15 02:09:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-15 02:09:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-10-15 02:09:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-10-15 02:09:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-15 02:09:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-15 02:09:05,125 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-15 02:09:05,422 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-15 02:09:05,422 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-15 02:09:05,429 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:09:05 BoogieIcfgContainer [2020-10-15 02:09:05,430 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-15 02:09:05,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-15 02:09:05,435 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-15 02:09:05,441 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-15 02:09:05,444 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 15.10 02:09:04" (1/3) ... [2020-10-15 02:09:05,445 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f80bf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:09:05, skipping insertion in model container [2020-10-15 02:09:05,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 15.10 02:09:04" (2/3) ... [2020-10-15 02:09:05,446 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f80bf6f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 15.10 02:09:05, skipping insertion in model container [2020-10-15 02:09:05,446 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 15.10 02:09:05" (3/3) ... [2020-10-15 02:09:05,451 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-2.c [2020-10-15 02:09:05,474 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-15 02:09:05,484 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-15 02:09:05,499 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-15 02:09:05,527 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-10-15 02:09:05,527 INFO L376 AbstractCegarLoop]: Hoare is true [2020-10-15 02:09:05,527 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-15 02:09:05,527 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-15 02:09:05,527 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-15 02:09:05,528 INFO L380 AbstractCegarLoop]: Difference is false [2020-10-15 02:09:05,528 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-15 02:09:05,528 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-15 02:09:05,545 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states. [2020-10-15 02:09:05,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-15 02:09:05,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:05,552 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:05,552 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:05,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:05,557 INFO L82 PathProgramCache]: Analyzing trace with hash 537028541, now seen corresponding path program 1 times [2020-10-15 02:09:05,564 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:05,565 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1618958520] [2020-10-15 02:09:05,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:05,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:05,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:05,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:05,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:05,818 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-15 02:09:05,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:05,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 142 [2020-10-15 02:09:05,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:05,822 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:05,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-15 02:09:05,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:05,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-15 02:09:05,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:05,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:05,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:05,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:05,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:05,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:05,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:05,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:05,903 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:05,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:05,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:05,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:05,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:05,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:05,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:05,934 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:05,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:05,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:05,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 02:09:05,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:05,936 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-15 02:09:05,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:05,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-15 02:09:05,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:05,957 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:09:05,959 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1618958520] [2020-10-15 02:09:05,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:09:05,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:09:05,962 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1966470099] [2020-10-15 02:09:05,967 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:09:05,968 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:05,983 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:09:05,984 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:05,987 INFO L87 Difference]: Start difference. First operand 24 states. Second operand 5 states. [2020-10-15 02:09:06,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:06,040 INFO L93 Difference]: Finished difference Result 38 states and 44 transitions. [2020-10-15 02:09:06,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:09:06,042 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-10-15 02:09:06,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:06,055 INFO L225 Difference]: With dead ends: 38 [2020-10-15 02:09:06,055 INFO L226 Difference]: Without dead ends: 21 [2020-10-15 02:09:06,060 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 [2020-10-15 02:09:06,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2020-10-15 02:09:06,100 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2020-10-15 02:09:06,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 02:09:06,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-10-15 02:09:06,105 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 13 [2020-10-15 02:09:06,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:06,105 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-10-15 02:09:06,105 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:09:06,106 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-10-15 02:09:06,107 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-15 02:09:06,107 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:06,108 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:06,108 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-15 02:09:06,108 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:06,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:06,109 INFO L82 PathProgramCache]: Analyzing trace with hash 179123823, now seen corresponding path program 1 times [2020-10-15 02:09:06,109 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:06,110 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [841843534] [2020-10-15 02:09:06,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:06,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:06,124 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:06,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:06,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-15 02:09:06,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:06,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 128 [2020-10-15 02:09:06,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:06,250 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:06,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:06,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:06,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:06,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:06,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:06,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:06,266 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:06,266 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:06,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:06,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:06,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:06,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:06,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:06,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:06,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:06,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:06,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:06,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:06,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:06,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:06,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-15 02:09:06,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:06,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:06,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:06,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:06,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:06,323 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-15 02:09:06,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [841843534] [2020-10-15 02:09:06,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-15 02:09:06,324 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-15 02:09:06,324 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [654984013] [2020-10-15 02:09:06,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-15 02:09:06,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:06,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-15 02:09:06,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-15 02:09:06,327 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 5 states. [2020-10-15 02:09:06,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:06,390 INFO L93 Difference]: Finished difference Result 27 states and 32 transitions. [2020-10-15 02:09:06,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-15 02:09:06,391 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-10-15 02:09:06,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:06,392 INFO L225 Difference]: With dead ends: 27 [2020-10-15 02:09:06,392 INFO L226 Difference]: Without dead ends: 23 [2020-10-15 02:09:06,394 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 [2020-10-15 02:09:06,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-15 02:09:06,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 21. [2020-10-15 02:09:06,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 21 states. [2020-10-15 02:09:06,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 25 transitions. [2020-10-15 02:09:06,402 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 25 transitions. Word has length 14 [2020-10-15 02:09:06,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:06,402 INFO L479 AbstractCegarLoop]: Abstraction has 21 states and 25 transitions. [2020-10-15 02:09:06,403 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-15 02:09:06,403 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 25 transitions. [2020-10-15 02:09:06,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-15 02:09:06,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:06,404 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:06,405 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-15 02:09:06,405 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:06,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:06,405 INFO L82 PathProgramCache]: Analyzing trace with hash 806022394, now seen corresponding path program 1 times [2020-10-15 02:09:06,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:06,406 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2074654997] [2020-10-15 02:09:06,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:06,415 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:06,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:06,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:06,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:07,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-15 02:09:07,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:09:07,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-10-15 02:09:07,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:07,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:07,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-15 02:09:07,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:07,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:07,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:07,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:07,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:07,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:07,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:07,284 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:07,285 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:07,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:07,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:07,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:07,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:09:07,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:09:07,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-10-15 02:09:07,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:07,439 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:07,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:09:07,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:07,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:07,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:07,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:07,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:07,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:07,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:09:07,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:07,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:07,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:07,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:09:07,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:07,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 02:09:07,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:07,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:07,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:07,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:09:07,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:07,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:07,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:07,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:07,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:07,524 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 5 proven. 3 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-15 02:09:07,525 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2074654997] [2020-10-15 02:09:07,525 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:07,525 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-15 02:09:07,525 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633216392] [2020-10-15 02:09:07,527 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-15 02:09:07,527 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:07,527 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-15 02:09:07,528 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-15 02:09:07,528 INFO L87 Difference]: Start difference. First operand 21 states and 25 transitions. Second operand 6 states. [2020-10-15 02:09:07,663 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:07,664 INFO L93 Difference]: Finished difference Result 32 states and 42 transitions. [2020-10-15 02:09:07,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:09:07,668 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 26 [2020-10-15 02:09:07,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:07,671 INFO L225 Difference]: With dead ends: 32 [2020-10-15 02:09:07,671 INFO L226 Difference]: Without dead ends: 28 [2020-10-15 02:09:07,673 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-15 02:09:07,674 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-15 02:09:07,689 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-15 02:09:07,691 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 02:09:07,693 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-10-15 02:09:07,693 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 26 [2020-10-15 02:09:07,694 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:07,695 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-10-15 02:09:07,696 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-15 02:09:07,696 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2020-10-15 02:09:07,698 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2020-10-15 02:09:07,698 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:07,698 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:07,699 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-15 02:09:07,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:07,700 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:07,701 INFO L82 PathProgramCache]: Analyzing trace with hash -1780546516, now seen corresponding path program 1 times [2020-10-15 02:09:07,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:07,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915790804] [2020-10-15 02:09:07,702 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:07,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:08,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-15 02:09:08,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:09:08,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 538 [2020-10-15 02:09:08,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:08,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:08,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-15 02:09:08,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:08,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:08,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:08,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:08,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:08,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:08,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:08,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:08,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:08,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:08,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:08,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:08,279 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:08,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:08,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:09:08,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-15 02:09:08,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-15 02:09:08,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:08,421 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:08,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 02:09:08,421 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:08,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:08,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:08,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,468 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:08,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:08,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:08,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-15 02:09:08,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:08,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:08,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:09:08,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:08,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 02:09:08,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:08,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:08,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:08,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:08,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:09:08,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:08,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:08,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:08,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:08,508 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-15 02:09:08,508 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915790804] [2020-10-15 02:09:08,508 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:08,509 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:09:08,509 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [836642663] [2020-10-15 02:09:08,510 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:09:08,510 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:08,510 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:09:08,510 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:09:08,511 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 7 states. [2020-10-15 02:09:08,649 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:08,649 INFO L93 Difference]: Finished difference Result 37 states and 54 transitions. [2020-10-15 02:09:08,650 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-15 02:09:08,650 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 28 [2020-10-15 02:09:08,651 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:08,652 INFO L225 Difference]: With dead ends: 37 [2020-10-15 02:09:08,653 INFO L226 Difference]: Without dead ends: 33 [2020-10-15 02:09:08,653 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:09:08,654 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-10-15 02:09:08,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 26. [2020-10-15 02:09:08,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-15 02:09:08,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 34 transitions. [2020-10-15 02:09:08,663 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 34 transitions. Word has length 28 [2020-10-15 02:09:08,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:08,663 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 34 transitions. [2020-10-15 02:09:08,663 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:09:08,664 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 34 transitions. [2020-10-15 02:09:08,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-15 02:09:08,666 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:08,666 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:08,666 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-15 02:09:08,666 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:08,667 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:08,667 INFO L82 PathProgramCache]: Analyzing trace with hash -2052347508, now seen corresponding path program 2 times [2020-10-15 02:09:08,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:08,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [776384622] [2020-10-15 02:09:08,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:08,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:08,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:08,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:09,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:09,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:09,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:10,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:10,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:10,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:10,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:13,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-15 02:09:13,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:09:13,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:09:13,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:13,682 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:09:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:13,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 02:09:13,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:13,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:13,703 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:13,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:13,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:13,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:13,706 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:13,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:13,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:13,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:13,707 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:13,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:13,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:13,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:13,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:13,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:15,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:15,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:15,982 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:15,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:16,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:16,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:18,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-15 02:09:18,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:09:18,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:09:18,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:18,719 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:18,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:09:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:18,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-15 02:09:18,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:18,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:18,749 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:18,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:09:18,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-15 02:09:18,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:18,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:18,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:18,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:09:18,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:09:18,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:18,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:18,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:18,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:18,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:18,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:18,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:18,786 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:18,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:18,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:18,789 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 02:09:18,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:18,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:18,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:18,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:18,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:18,793 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:18,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:18,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:18,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:09:18,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:18,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:18,893 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:09:18,893 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:09:18,893 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-15 02:09:18,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:18,894 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:09:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:18,894 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:09:18,894 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:18,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:18,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:18,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:18,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:18,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:18,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:09:18,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:18,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:18,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:18,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:18,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:18,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 02:09:18,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:18,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:18,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:18,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:18,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:18,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:18,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:18,934 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:18,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:18,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:09:18,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:18,945 INFO L134 CoverageAnalysis]: Checked inductivity of 99 backedges. 36 proven. 19 refuted. 0 times theorem prover too weak. 44 trivial. 0 not checked. [2020-10-15 02:09:18,946 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [776384622] [2020-10-15 02:09:18,946 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:18,946 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-15 02:09:18,947 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1802530902] [2020-10-15 02:09:18,948 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-15 02:09:18,948 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:18,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-15 02:09:18,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-15 02:09:18,949 INFO L87 Difference]: Start difference. First operand 26 states and 34 transitions. Second operand 7 states. [2020-10-15 02:09:19,081 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:19,081 INFO L93 Difference]: Finished difference Result 42 states and 68 transitions. [2020-10-15 02:09:19,082 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-15 02:09:19,082 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-10-15 02:09:19,083 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:19,086 INFO L225 Difference]: With dead ends: 42 [2020-10-15 02:09:19,086 INFO L226 Difference]: Without dead ends: 38 [2020-10-15 02:09:19,087 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=32, Invalid=58, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:09:19,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-15 02:09:19,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 31. [2020-10-15 02:09:19,106 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-10-15 02:09:19,107 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 45 transitions. [2020-10-15 02:09:19,108 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 45 transitions. Word has length 52 [2020-10-15 02:09:19,110 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:19,110 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 45 transitions. [2020-10-15 02:09:19,111 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-15 02:09:19,111 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 45 transitions. [2020-10-15 02:09:19,115 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-15 02:09:19,116 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:19,118 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:19,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-15 02:09:19,118 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:19,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:19,119 INFO L82 PathProgramCache]: Analyzing trace with hash 1143247140, now seen corresponding path program 1 times [2020-10-15 02:09:19,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:19,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1461995693] [2020-10-15 02:09:19,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:19,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:19,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:19,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:21,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:23,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:23,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-15 02:09:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:09:24,135 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-15 02:09:24,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:24,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:09:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-10-15 02:09:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:24,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:24,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:24,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:24,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:24,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:24,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:24,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:24,154 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:24,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:24,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:24,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:24,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:24,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:24,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:25,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:25,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:26,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:26,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:29,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:09:29,167 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-15 02:09:29,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:09:29,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:29,168 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-15 02:09:29,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:09:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:29,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:29,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:29,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:29,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 02:09:29,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:29,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:09:29,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:29,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:29,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:29,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-15 02:09:29,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:29,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:29,227 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:29,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:29,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:29,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:29,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:29,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:29,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:29,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:29,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:29,233 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-15 02:09:29,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 02:09:29,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:29,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:29,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:29,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:29,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:29,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:29,238 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:29,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:29,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:29,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:29,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-10-15 02:09:29,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:29,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:29,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-15 02:09:29,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:29,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-15 02:09:29,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:29,317 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-15 02:09:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:29,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 02:09:29,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:29,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:29,351 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:29,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:29,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:29,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:29,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:29,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:29,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:29,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:29,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:29,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 02:09:29,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:29,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:29,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:29,367 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:29,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-15 02:09:29,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:29,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:29,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:29,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:29,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:29,403 INFO L134 CoverageAnalysis]: Checked inductivity of 106 backedges. 42 proven. 22 refuted. 0 times theorem prover too weak. 42 trivial. 0 not checked. [2020-10-15 02:09:29,403 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1461995693] [2020-10-15 02:09:29,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:29,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-15 02:09:29,405 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1702568507] [2020-10-15 02:09:29,406 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-15 02:09:29,406 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:29,406 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-15 02:09:29,407 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-10-15 02:09:29,407 INFO L87 Difference]: Start difference. First operand 31 states and 45 transitions. Second operand 9 states. [2020-10-15 02:09:29,539 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:29,539 INFO L93 Difference]: Finished difference Result 66 states and 118 transitions. [2020-10-15 02:09:29,540 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-15 02:09:29,541 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 54 [2020-10-15 02:09:29,541 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:29,542 INFO L225 Difference]: With dead ends: 66 [2020-10-15 02:09:29,542 INFO L226 Difference]: Without dead ends: 41 [2020-10-15 02:09:29,549 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-10-15 02:09:29,550 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-15 02:09:29,561 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 33. [2020-10-15 02:09:29,561 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-10-15 02:09:29,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 44 transitions. [2020-10-15 02:09:29,563 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 44 transitions. Word has length 54 [2020-10-15 02:09:29,564 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:29,564 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 44 transitions. [2020-10-15 02:09:29,564 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-15 02:09:29,564 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 44 transitions. [2020-10-15 02:09:29,567 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-10-15 02:09:29,568 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:29,568 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 5, 4, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:29,568 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-15 02:09:29,568 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:29,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:29,569 INFO L82 PathProgramCache]: Analyzing trace with hash 1002563631, now seen corresponding path program 2 times [2020-10-15 02:09:29,569 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:29,569 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [839599152] [2020-10-15 02:09:29,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:29,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:29,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:29,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:31,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:31,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:31,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:31,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:31,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:31,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:32,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,580 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:34,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-10-15 02:09:34,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-15 02:09:34,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-15 02:09:34,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:34,581 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:09:34,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-10-15 02:09:34,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 02:09:34,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:34,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:34,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:34,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:34,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:34,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:34,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 02:09:34,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:34,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:34,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:34,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:34,591 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:34,594 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:34,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:34,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:35,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:35,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:35,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:35,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:35,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:35,866 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:39,597 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-10-15 02:09:39,597 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 21 [2020-10-15 02:09:39,597 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-15 02:09:39,598 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:39,598 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:09:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 02:09:39,598 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-15 02:09:39,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:39,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:39,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:39,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,690 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:39,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:09:39,691 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:09:39,691 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-15 02:09:39,691 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:39,692 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:39,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-15 02:09:39,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:39,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:39,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:39,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:39,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:39,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-15 02:09:39,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:39,723 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:39,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:09:39,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:39,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 02:09:39,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:39,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:39,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:39,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:39,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-15 02:09:39,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:39,752 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:39,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:39,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:39,755 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 02:09:39,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:39,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:40,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:41,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-15 02:09:41,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-15 02:09:41,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1578 [2020-10-15 02:09:41,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:41,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:41,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:41,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-15 02:09:41,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:41,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:41,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:41,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,470 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:41,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-15 02:09:41,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-15 02:09:41,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-15 02:09:41,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:41,471 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:41,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-15 02:09:41,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:41,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:41,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:41,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:41,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:41,478 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:41,478 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:41,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:41,478 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:41,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:41,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:41,479 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:41,480 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-10-15 02:09:41,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:41,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:41,484 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:41,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:41,484 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:41,485 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:41,485 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:41,487 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-15 02:09:41,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:41,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:41,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:41,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:41,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:41,492 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:41,492 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:41,492 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:41,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:41,504 INFO L134 CoverageAnalysis]: Checked inductivity of 204 backedges. 44 proven. 73 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-10-15 02:09:41,505 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [839599152] [2020-10-15 02:09:41,505 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:41,505 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-15 02:09:41,506 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278383803] [2020-10-15 02:09:41,506 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-15 02:09:41,506 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:41,507 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-15 02:09:41,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-15 02:09:41,507 INFO L87 Difference]: Start difference. First operand 33 states and 44 transitions. Second operand 10 states. [2020-10-15 02:09:41,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:41,725 INFO L93 Difference]: Finished difference Result 75 states and 124 transitions. [2020-10-15 02:09:41,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-15 02:09:41,725 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 70 [2020-10-15 02:09:41,726 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:41,727 INFO L225 Difference]: With dead ends: 75 [2020-10-15 02:09:41,727 INFO L226 Difference]: Without dead ends: 48 [2020-10-15 02:09:41,729 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=76, Invalid=164, Unknown=0, NotChecked=0, Total=240 [2020-10-15 02:09:41,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-15 02:09:41,737 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-15 02:09:41,737 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-15 02:09:41,738 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 64 transitions. [2020-10-15 02:09:41,739 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 64 transitions. Word has length 70 [2020-10-15 02:09:41,739 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:41,739 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 64 transitions. [2020-10-15 02:09:41,739 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-15 02:09:41,739 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 64 transitions. [2020-10-15 02:09:41,741 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 95 [2020-10-15 02:09:41,741 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:41,741 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 9, 6, 6, 6, 6, 6, 6, 6, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:41,742 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-15 02:09:41,742 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:41,742 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:41,742 INFO L82 PathProgramCache]: Analyzing trace with hash 153740623, now seen corresponding path program 2 times [2020-10-15 02:09:41,743 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:41,743 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1734326161] [2020-10-15 02:09:41,743 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:41,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:41,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:41,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:42,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:43,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:46,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 126 [2020-10-15 02:09:46,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-15 02:09:46,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-10-15 02:09:46,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:46,765 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-15 02:09:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-10-15 02:09:46,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-15 02:09:46,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-15 02:09:46,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:46,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:46,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 7 [2020-10-15 02:09:46,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:46,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:46,781 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:46,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:46,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:46,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-15 02:09:46,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:46,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,799 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:46,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:47,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:47,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:47,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:47,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:48,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:50,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:51,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 114 [2020-10-15 02:09:51,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 25 [2020-10-15 02:09:51,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-15 02:09:51,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:51,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-15 02:09:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 02:09:51,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:09:51,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:51,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:51,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:51,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:51,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:09:52,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-15 02:09:52,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-15 02:09:52,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,299 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:52,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-15 02:09:52,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:52,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:52,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,342 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:09:52,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:52,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-15 02:09:52,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:52,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-15 02:09:52,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-15 02:09:52,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:52,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:52,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:52,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-10-15 02:09:52,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,351 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:52,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:52,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:52,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 02:09:52,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,364 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,364 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:52,364 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:52,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:52,365 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,365 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:52,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:52,366 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:52,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:09:52,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:52,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:52,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:52,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-15 02:09:52,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:52,374 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:52,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:09:52,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:52,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 02:09:52,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:52,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,925 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:52,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:54,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,401 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:57,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-15 02:09:57,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:57,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:57,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:57,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,728 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:57,729 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-10-15 02:09:57,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-15 02:09:57,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-15 02:09:57,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:57,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:57,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-15 02:09:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:57,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-15 02:09:57,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:57,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:57,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:57,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-10-15 02:09:57,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:57,742 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-15 02:09:57,742 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:57,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-10-15 02:09:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-15 02:09:57,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:57,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-15 02:09:57,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:57,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:57,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:57,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:57,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-15 02:09:57,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:57,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-15 02:09:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-15 02:09:57,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-15 02:09:57,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:57,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-15 02:09:57,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:57,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:57,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-15 02:09:57,815 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:57,815 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-15 02:09:57,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:57,815 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 6 [2020-10-15 02:09:57,816 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:57,816 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:57,818 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-15 02:09:57,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:57,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:57,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:57,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-15 02:09:57,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-15 02:09:57,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:57,821 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-15 02:09:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:57,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-15 02:09:57,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-15 02:09:57,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-10-15 02:09:57,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-15 02:09:57,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-15 02:09:57,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-15 02:09:57,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-15 02:09:57,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-15 02:09:57,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-15 02:09:57,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-15 02:09:57,839 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-10-15 02:09:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-15 02:09:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-15 02:09:57,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-15 02:09:57,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-15 02:09:57,896 INFO L134 CoverageAnalysis]: Checked inductivity of 408 backedges. 150 proven. 101 refuted. 0 times theorem prover too weak. 157 trivial. 0 not checked. [2020-10-15 02:09:57,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1734326161] [2020-10-15 02:09:57,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-15 02:09:57,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-15 02:09:57,898 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [317911115] [2020-10-15 02:09:57,900 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-15 02:09:57,900 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-15 02:09:57,900 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-15 02:09:57,901 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=32, Invalid=150, Unknown=0, NotChecked=0, Total=182 [2020-10-15 02:09:57,901 INFO L87 Difference]: Start difference. First operand 45 states and 64 transitions. Second operand 14 states. [2020-10-15 02:09:58,334 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-15 02:09:58,334 INFO L93 Difference]: Finished difference Result 98 states and 173 transitions. [2020-10-15 02:09:58,334 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-15 02:09:58,335 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 94 [2020-10-15 02:09:58,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-15 02:09:58,337 INFO L225 Difference]: With dead ends: 98 [2020-10-15 02:09:58,337 INFO L226 Difference]: Without dead ends: 54 [2020-10-15 02:09:58,339 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=158, Invalid=492, Unknown=0, NotChecked=0, Total=650 [2020-10-15 02:09:58,342 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-10-15 02:09:58,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 51. [2020-10-15 02:09:58,358 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-15 02:09:58,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 64 transitions. [2020-10-15 02:09:58,359 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 64 transitions. Word has length 94 [2020-10-15 02:09:58,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-15 02:09:58,360 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 64 transitions. [2020-10-15 02:09:58,360 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-15 02:09:58,360 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 64 transitions. [2020-10-15 02:09:58,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-10-15 02:09:58,363 INFO L414 BasicCegarLoop]: Found error trace [2020-10-15 02:09:58,363 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 5, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-15 02:09:58,363 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-15 02:09:58,363 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-15 02:09:58,364 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-15 02:09:58,364 INFO L82 PathProgramCache]: Analyzing trace with hash 1200034344, now seen corresponding path program 3 times [2020-10-15 02:09:58,364 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-15 02:09:58,364 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [916190929] [2020-10-15 02:09:58,365 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-15 02:09:58,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-15 02:09:58,379 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-15 02:09:58,380 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-10-15 02:09:58,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-15 02:09:58,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 15.10 02:09:58 BoogieIcfgContainer [2020-10-15 02:09:58,412 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-15 02:09:58,415 INFO L168 Benchmark]: Toolchain (without parser) took 53725.74 ms. Allocated memory was 147.3 MB in the beginning and 730.3 MB in the end (delta: 583.0 MB). Free memory was 104.0 MB in the beginning and 616.1 MB in the end (delta: -512.1 MB). Peak memory consumption was 70.9 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:58,415 INFO L168 Benchmark]: CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. [2020-10-15 02:09:58,416 INFO L168 Benchmark]: CACSL2BoogieTranslator took 237.83 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:58,417 INFO L168 Benchmark]: Boogie Preprocessor took 30.50 ms. Allocated memory is still 147.3 MB. Free memory was 94.5 MB in the beginning and 92.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:58,418 INFO L168 Benchmark]: RCFGBuilder took 471.14 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.9 MB in the beginning and 171.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:58,419 INFO L168 Benchmark]: TraceAbstraction took 52977.73 ms. Allocated memory was 203.9 MB in the beginning and 730.3 MB in the end (delta: 526.4 MB). Free memory was 170.7 MB in the beginning and 616.1 MB in the end (delta: -445.4 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. [2020-10-15 02:09:58,423 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17 ms. Allocated memory is still 147.3 MB. Free memory was 121.9 MB in the beginning and 121.5 MB in the end (delta: 419.8 kB). Peak memory consumption was 419.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 237.83 ms. Allocated memory is still 147.3 MB. Free memory was 103.6 MB in the beginning and 94.5 MB in the end (delta: 9.1 MB). Peak memory consumption was 9.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 30.50 ms. Allocated memory is still 147.3 MB. Free memory was 94.5 MB in the beginning and 92.9 MB in the end (delta: 1.7 MB). Peak memory consumption was 1.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 471.14 ms. Allocated memory was 147.3 MB in the beginning and 203.9 MB in the end (delta: 56.6 MB). Free memory was 92.9 MB in the beginning and 171.6 MB in the end (delta: -78.8 MB). Peak memory consumption was 9.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 52977.73 ms. Allocated memory was 203.9 MB in the beginning and 730.3 MB in the end (delta: 526.4 MB). Free memory was 170.7 MB in the beginning and 616.1 MB in the end (delta: -445.4 MB). Peak memory consumption was 80.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 27]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L24] int x = 5; [L25] CALL, EXPR fibo(x) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND FALSE !(n == 1) [L11] CALL, EXPR fibo(n-1) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND TRUE n < 1 [L7] return 0; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-1) [L11] CALL, EXPR fibo(n-2) [L6] COND FALSE !(n < 1) [L8] COND TRUE n == 1 [L9] return 1; [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L11] RET, EXPR fibo(n-2) [L11] return fibo(n-1) + fibo(n-2); [L25] RET, EXPR fibo(x) [L25] int result = fibo(x); [L26] COND TRUE result == 5 [L27] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 24 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 52.8s, OverallIterations: 9, TraceHistogramMax: 15, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 140 SDtfs, 223 SDslu, 431 SDs, 0 SdLazy, 472 SolverSat, 225 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 192 GetRequests, 115 SyntacticMatches, 0 SemanticMatches, 77 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 120 ImplicationChecksByTransitivity, 0.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=51occurred in iteration=8, 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, 8 MinimizatonAttempts, 32 StatesRemovedByMinimization, 7 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 50.9s InterpolantComputationTime, 460 NumberOfCodeBlocks, 460 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 343 ConstructedInterpolants, 0 QuantifiedInterpolants, 37669 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 616/844 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...