/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:13:43,942 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:13:43,946 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:13:43,979 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:13:43,980 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:13:43,981 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:13:43,983 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:13:43,985 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:13:43,987 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:13:43,988 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:13:43,989 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:13:43,991 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:13:43,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:13:43,992 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:13:43,994 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:13:43,995 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:13:43,996 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:13:43,998 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:13:44,000 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:13:44,002 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:13:44,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:13:44,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:13:44,008 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:13:44,009 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:13:44,012 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:13:44,012 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:13:44,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:13:44,014 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:13:44,015 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:13:44,016 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:13:44,016 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:13:44,017 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:13:44,018 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:13:44,019 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:13:44,020 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:13:44,021 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:13:44,022 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:13:44,022 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:13:44,022 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:13:44,023 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:13:44,024 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:13:44,025 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:13:44,056 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:13:44,057 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:13:44,058 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:13:44,058 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:13:44,059 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:13:44,059 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:13:44,059 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:13:44,059 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:13:44,059 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:13:44,060 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:13:44,060 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:13:44,060 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:13:44,060 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:13:44,060 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:13:44,061 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:13:44,061 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:13:44,061 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:13:44,061 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:13:44,061 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:13:44,062 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:13:44,062 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:13:44,062 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:44,062 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:13:44,063 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:13:44,063 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:13:44,063 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:13:44,063 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:13:44,063 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:13:44,064 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:13:44,064 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:13:44,582 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:13:44,601 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:13:44,606 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:13:44,608 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:13:44,608 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:13:44,609 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 12:13:44,693 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/810eedf03/a269bbe256ec489fa49ed9ba4ba44e1e/FLAGbbdd99a9b [2020-09-25 12:13:45,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:13:45,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 12:13:45,318 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/810eedf03/a269bbe256ec489fa49ed9ba4ba44e1e/FLAGbbdd99a9b [2020-09-25 12:13:45,620 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/810eedf03/a269bbe256ec489fa49ed9ba4ba44e1e [2020-09-25 12:13:45,636 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:13:45,643 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:13:45,644 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:45,644 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:13:45,648 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:13:45,650 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:45,654 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@373efb0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45, skipping insertion in model container [2020-09-25 12:13:45,655 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:45,665 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:13:45,693 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:13:45,919 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:45,926 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:13:45,944 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:13:45,959 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:13:45,959 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45 WrapperNode [2020-09-25 12:13:45,959 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:13:45,960 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:13:45,960 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:13:45,961 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:13:45,975 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:45,975 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:46,058 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:46,059 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:46,064 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:46,067 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:46,068 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... [2020-09-25 12:13:46,070 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:13:46,071 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:13:46,071 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:13:46,071 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:13:46,072 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:13:46,155 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:13:46,156 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 12:13:46,156 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:13:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:13:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:13:46,156 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 12:13:46,157 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:13:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:13:46,158 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:13:46,384 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:13:46,384 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:13:46,390 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:46 BoogieIcfgContainer [2020-09-25 12:13:46,391 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:13:46,392 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:13:46,393 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:13:46,396 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:13:46,397 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:13:45" (1/3) ... [2020-09-25 12:13:46,398 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26720900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:46, skipping insertion in model container [2020-09-25 12:13:46,398 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:13:45" (2/3) ... [2020-09-25 12:13:46,399 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@26720900 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:13:46, skipping insertion in model container [2020-09-25 12:13:46,399 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:13:46" (3/3) ... [2020-09-25 12:13:46,401 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-25 12:13:46,418 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:13:46,452 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:13:46,504 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:13:46,539 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:13:46,539 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:13:46,539 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:13:46,540 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:13:46,540 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:13:46,540 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:13:46,540 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:13:46,540 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:13:46,561 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 12:13:46,569 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 12:13:46,569 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:46,571 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:46,571 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:46,578 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:46,578 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 12:13:46,587 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:46,588 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082059746] [2020-09-25 12:13:46,588 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:46,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 12:13:46,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 170 [2020-09-25 12:13:46,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:46,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:13:46,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 12:13:46,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 12:13:46,991 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:46,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:46,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:46,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:46,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:46,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:46,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:13:46,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:46,999 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:47,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,006 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:13:47,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,059 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:47,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-09-25 12:13:47,060 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:13:47,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,136 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:13:47,138 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082059746] [2020-09-25 12:13:47,140 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:47,141 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:13:47,142 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [398981498] [2020-09-25 12:13:47,149 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:13:47,149 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:47,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:13:47,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:47,173 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-25 12:13:47,351 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:47,351 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 12:13:47,352 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:13:47,354 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 12:13:47,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:47,369 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:13:47,370 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 12:13:47,375 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:13:47,398 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 12:13:47,431 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 12:13:47,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 12:13:47,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 12:13:47,440 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 12:13:47,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:47,440 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 12:13:47,441 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:13:47,441 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 12:13:47,445 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 12:13:47,445 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:47,445 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:47,445 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:13:47,446 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:47,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:47,447 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 12:13:47,447 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:47,447 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [700011758] [2020-09-25 12:13:47,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:47,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 12:13:47,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 175 [2020-09-25 12:13:47,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,659 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:13:47,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 12:13:47,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,684 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:47,685 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:47,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,689 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:47,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:47,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:13:47,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:47,715 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:47,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:47,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:13:47,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:47,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:47,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:13:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:47,758 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:13:47,759 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [700011758] [2020-09-25 12:13:47,759 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:13:47,759 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:13:47,760 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1866503221] [2020-09-25 12:13:47,762 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:13:47,762 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:47,763 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:13:47,763 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:13:47,763 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-25 12:13:47,910 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:47,910 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 12:13:47,911 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 12:13:47,911 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 12:13:47,912 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:47,913 INFO L225 Difference]: With dead ends: 39 [2020-09-25 12:13:47,913 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 12:13:47,915 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 12:13:47,915 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 12:13:47,921 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 12:13:47,921 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 12:13:47,923 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 12:13:47,923 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 12:13:47,924 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:47,924 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 12:13:47,924 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:13:47,924 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 12:13:47,926 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 12:13:47,926 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:47,926 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:47,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:13:47,927 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:47,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:47,927 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 12:13:47,928 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:47,928 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1887999098] [2020-09-25 12:13:47,928 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:47,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:47,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:13:48,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:48,428 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-09-25 12:13:48,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,429 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:13:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:13:48,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 12:13:48,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:13:48,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:48,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:48,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,464 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:48,464 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:48,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:48,465 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,467 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:13:48,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:13:48,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:48,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 182 [2020-09-25 12:13:48,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:13:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:48,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:13:48,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:13:48,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:48,728 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 12:13:48,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,729 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:48,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:13:48,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:13:48,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:48,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:48,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:48,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:48,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:48,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:13:48,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:48,799 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:48,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:13:48,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:48,822 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 12:13:48,822 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1887999098] [2020-09-25 12:13:48,822 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:48,823 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:13:48,823 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912571828] [2020-09-25 12:13:48,824 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:13:48,824 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:48,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:13:48,825 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:13:48,825 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-09-25 12:13:49,130 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:49,131 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-09-25 12:13:49,131 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:13:49,131 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-09-25 12:13:49,132 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:49,134 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:13:49,134 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:13:49,135 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:13:49,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:13:49,144 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-25 12:13:49,144 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 12:13:49,146 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-09-25 12:13:49,147 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2020-09-25 12:13:49,147 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:49,147 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-09-25 12:13:49,147 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:13:49,148 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-09-25 12:13:49,149 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 12:13:49,149 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:49,150 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:49,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:13:49,150 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:49,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:49,151 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 12:13:49,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:49,152 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341279879] [2020-09-25 12:13:49,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:49,161 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:49,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:49,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,051 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 12:13:50,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:50,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 888 [2020-09-25 12:13:50,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 12:13:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:13:50,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:13:50,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:50,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:50,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:50,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:50,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:50,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:50,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:13:50,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:13:50,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:50,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 12:13:50,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,202 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:13:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:13:50,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:13:50,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:13:50,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:50,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:13:50,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,277 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:13:50,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:13:50,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:50,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:50,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:50,355 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:13:50,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:50,356 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:50,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:50,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:13:50,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:50,377 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 12:13:50,378 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341279879] [2020-09-25 12:13:50,378 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:50,379 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 12:13:50,379 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1564322366] [2020-09-25 12:13:50,380 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 12:13:50,380 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:50,380 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 12:13:50,380 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:13:50,381 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 12 states. [2020-09-25 12:13:50,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:50,732 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-09-25 12:13:50,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 12:13:50,733 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 12:13:50,734 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:50,735 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:13:50,736 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:13:50,737 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-25 12:13:50,737 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:13:50,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2020-09-25 12:13:50,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 12:13:50,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-25 12:13:50,748 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 37 [2020-09-25 12:13:50,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:50,749 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-25 12:13:50,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 12:13:50,749 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-25 12:13:50,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 12:13:50,752 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:50,752 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:50,753 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:13:50,753 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:50,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:50,753 INFO L82 PathProgramCache]: Analyzing trace with hash -845339958, now seen corresponding path program 2 times [2020-09-25 12:13:50,754 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:50,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [426561016] [2020-09-25 12:13:50,754 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:50,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:50,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:50,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:51,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 12:13:55,006 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:13:55,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4241 [2020-09-25 12:13:55,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,007 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:13:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:13:55,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 12:13:55,008 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,033 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:13:55,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:55,036 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:13:55,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:55,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:13:55,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:55,037 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:13:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:55,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:13:55,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:55,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:13:55,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:55,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:55,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:57,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:57,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:13:57,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:13:57,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2948 [2020-09-25 12:13:57,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:57,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:13:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:57,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:13:57,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:58,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:13:58,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:58,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:58,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:58,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:58,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:13:58,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:58,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:58,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:13:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:58,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:13:58,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:58,104 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:13:58,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:58,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:58,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:13:58,335 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:13:58,335 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 12:13:58,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:58,336 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:13:58,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:58,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:13:58,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:13:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:58,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:58,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:58,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:58,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:13:58,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:58,423 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:58,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:13:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:58,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:13:58,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:58,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:13:58,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:58,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:13:58,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:13:58,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:13:58,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:13:58,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:13:58,463 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:13:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:13:58,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:13:58,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:13:58,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:13:58,477 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 12:13:58,477 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [426561016] [2020-09-25 12:13:58,478 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:13:58,478 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:13:58,478 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [138381601] [2020-09-25 12:13:58,479 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:13:58,479 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:13:58,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:13:58,480 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:13:58,480 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 14 states. [2020-09-25 12:13:58,925 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:13:58,925 INFO L93 Difference]: Finished difference Result 92 states and 134 transitions. [2020-09-25 12:13:58,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:13:58,926 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-25 12:13:58,926 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:13:58,928 INFO L225 Difference]: With dead ends: 92 [2020-09-25 12:13:58,928 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 12:13:58,930 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:13:58,930 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 12:13:58,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2020-09-25 12:13:58,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 12:13:58,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-09-25 12:13:58,942 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 53 [2020-09-25 12:13:58,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:13:58,942 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-09-25 12:13:58,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:13:58,943 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-09-25 12:13:58,945 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:13:58,945 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:13:58,946 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:13:58,946 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:13:58,946 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:13:58,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:13:58,947 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 1 times [2020-09-25 12:13:58,947 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:13:58,947 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1651491331] [2020-09-25 12:13:58,947 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:13:58,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:13:58,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:58,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:13:59,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:00,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 12:14:03,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 12:14:03,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 12:14:03,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,960 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:14:03,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 12:14:03,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:04,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:04,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:04,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:04,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:04,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:04,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:04,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:04,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:04,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:14:04,017 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:04,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,039 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:08,976 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 12:14:08,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:14:08,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4956 [2020-09-25 12:14:08,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:08,977 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:08,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 12:14:08,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:09,039 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:09,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:14:09,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:09,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:09,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:09,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:14:09,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:09,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-09-25 12:14:09,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,413 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:09,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:09,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:14:09,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:09,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:09,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:09,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,503 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:14:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:09,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:09,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:09,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:09,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:09,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:09,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:09,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:14:09,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:09,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:09,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:09,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:14:09,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:09,567 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 2 proven. 37 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-09-25 12:14:09,567 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1651491331] [2020-09-25 12:14:09,568 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:09,568 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:14:09,568 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [717882790] [2020-09-25 12:14:09,569 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:14:09,569 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:09,569 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:14:09,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:14:09,570 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 14 states. [2020-09-25 12:14:10,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:10,153 INFO L93 Difference]: Finished difference Result 85 states and 117 transitions. [2020-09-25 12:14:10,155 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:14:10,155 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 56 [2020-09-25 12:14:10,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:10,159 INFO L225 Difference]: With dead ends: 85 [2020-09-25 12:14:10,159 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 12:14:10,164 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 88 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=121, Invalid=581, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:14:10,165 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 12:14:10,188 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-25 12:14:10,188 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 12:14:10,191 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 99 transitions. [2020-09-25 12:14:10,191 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 99 transitions. Word has length 56 [2020-09-25 12:14:10,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:10,191 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 99 transitions. [2020-09-25 12:14:10,192 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:14:10,193 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 99 transitions. [2020-09-25 12:14:10,200 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 12:14:10,200 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:10,200 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:10,200 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:14:10,201 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:10,201 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:10,201 INFO L82 PathProgramCache]: Analyzing trace with hash 2003700030, now seen corresponding path program 2 times [2020-09-25 12:14:10,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:10,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1747973344] [2020-09-25 12:14:10,205 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:10,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:10,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 12:14:11,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:11,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1180 [2020-09-25 12:14:11,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:14:11,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:14:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:11,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:11,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,422 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:11,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,422 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:11,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:11,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:11,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:14:11,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:14:12,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 974 [2020-09-25 12:14:12,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 12:14:12,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:12,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:12,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,459 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:12,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:14:12,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:12,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:12,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:12,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:14:12,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 12:14:12,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:14:12,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:12,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:12,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:12,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:14:12,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,684 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:14:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:12,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:12,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:12,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:14:12,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,705 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:12,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:12,746 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 12:14:12,746 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1747973344] [2020-09-25 12:14:12,746 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:12,746 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 12:14:12,747 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [912237350] [2020-09-25 12:14:12,747 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 12:14:12,747 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:12,748 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 12:14:12,748 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:14:12,748 INFO L87 Difference]: Start difference. First operand 67 states and 99 transitions. Second operand 14 states. [2020-09-25 12:14:13,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:13,260 INFO L93 Difference]: Finished difference Result 141 states and 226 transitions. [2020-09-25 12:14:13,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-09-25 12:14:13,262 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-25 12:14:13,262 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:13,267 INFO L225 Difference]: With dead ends: 141 [2020-09-25 12:14:13,267 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 12:14:13,271 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 177 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=153, Invalid=777, Unknown=0, NotChecked=0, Total=930 [2020-09-25 12:14:13,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 12:14:13,286 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 67. [2020-09-25 12:14:13,287 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 12:14:13,288 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 98 transitions. [2020-09-25 12:14:13,289 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 98 transitions. Word has length 55 [2020-09-25 12:14:13,289 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:13,289 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 98 transitions. [2020-09-25 12:14:13,289 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 12:14:13,290 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 98 transitions. [2020-09-25 12:14:13,291 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-25 12:14:13,291 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:13,291 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:13,292 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:14:13,292 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:13,292 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:13,292 INFO L82 PathProgramCache]: Analyzing trace with hash -1799591387, now seen corresponding path program 3 times [2020-09-25 12:14:13,293 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:13,293 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2069237143] [2020-09-25 12:14:13,293 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:13,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,217 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:15,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:14:15,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:15,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1916 [2020-09-25 12:14:15,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:15,219 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:14:15,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-09-25 12:14:15,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:15,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:15,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:15,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:15,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:15,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:15,240 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:15,240 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:15,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:15,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:15,241 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:15,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:14:15,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:15,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,608 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,608 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:14:16,608 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:16,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1360 [2020-09-25 12:14:16,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,609 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:14:16,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:16,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:16,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:16,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:14:16,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:16,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:16,697 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:16,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:16,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 12:14:16,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:14:16,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:16,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:16,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:16,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:16,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:14:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:14:16,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:16,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:16,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:16,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:16,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,979 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:14:16,980 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2069237143] [2020-09-25 12:14:16,980 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:16,980 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:14:16,980 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [876611044] [2020-09-25 12:14:16,981 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:14:16,981 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:16,981 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:14:16,982 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:14:16,982 INFO L87 Difference]: Start difference. First operand 67 states and 98 transitions. Second operand 15 states. [2020-09-25 12:14:17,378 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:17,378 INFO L93 Difference]: Finished difference Result 85 states and 120 transitions. [2020-09-25 12:14:17,379 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 12:14:17,379 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 54 [2020-09-25 12:14:17,380 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:17,381 INFO L225 Difference]: With dead ends: 85 [2020-09-25 12:14:17,381 INFO L226 Difference]: Without dead ends: 79 [2020-09-25 12:14:17,382 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 95 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=116, Invalid=586, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:14:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 79 states. [2020-09-25 12:14:17,391 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 79 to 73. [2020-09-25 12:14:17,391 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 12:14:17,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 108 transitions. [2020-09-25 12:14:17,393 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 108 transitions. Word has length 54 [2020-09-25 12:14:17,393 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:17,394 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 108 transitions. [2020-09-25 12:14:17,394 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:14:17,394 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 108 transitions. [2020-09-25 12:14:17,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 12:14:17,395 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:17,395 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:17,396 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:14:17,396 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:17,396 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:17,396 INFO L82 PathProgramCache]: Analyzing trace with hash 1288436502, now seen corresponding path program 3 times [2020-09-25 12:14:17,397 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:17,397 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [799749765] [2020-09-25 12:14:17,397 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:17,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:17,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:18,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:19,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 12:14:19,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:14:19,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1861 [2020-09-25 12:14:19,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:19,264 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 12:14:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:14:19,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 12:14:19,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:19,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:19,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:19,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:19,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:19,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:19,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:19,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:19,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:19,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:19,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:14:19,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:19,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:20,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 12:14:20,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:14:20,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1557 [2020-09-25 12:14:20,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:20,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:14:20,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 12:14:20,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:20,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:20,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:20,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:14:21,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:21,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 12:14:21,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:21,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:14:21,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:21,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:21,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:21,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:21,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:14:21,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:21,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:21,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:21,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:21,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:14:21,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:21,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 12:14:21,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,086 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:21,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:21,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:21,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:14:21,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,095 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,095 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:21,095 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:21,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:14:21,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,096 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:21,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:14:21,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:21,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:21,117 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 27 proven. 7 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-09-25 12:14:21,118 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [799749765] [2020-09-25 12:14:21,118 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:21,118 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:14:21,119 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910241454] [2020-09-25 12:14:21,119 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:14:21,119 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:21,119 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:14:21,120 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=86, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:14:21,120 INFO L87 Difference]: Start difference. First operand 73 states and 108 transitions. Second operand 11 states. [2020-09-25 12:14:21,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:21,286 INFO L93 Difference]: Finished difference Result 115 states and 196 transitions. [2020-09-25 12:14:21,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:14:21,287 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 53 [2020-09-25 12:14:21,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:21,288 INFO L225 Difference]: With dead ends: 115 [2020-09-25 12:14:21,288 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 12:14:21,290 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=138, Unknown=0, NotChecked=0, Total=182 [2020-09-25 12:14:21,290 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 12:14:21,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 49. [2020-09-25 12:14:21,296 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-09-25 12:14:21,297 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 62 transitions. [2020-09-25 12:14:21,297 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 62 transitions. Word has length 53 [2020-09-25 12:14:21,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:21,299 INFO L479 AbstractCegarLoop]: Abstraction has 49 states and 62 transitions. [2020-09-25 12:14:21,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:14:21,299 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 62 transitions. [2020-09-25 12:14:21,300 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 12:14:21,300 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:21,300 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:21,301 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:14:21,301 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:21,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:21,301 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 4 times [2020-09-25 12:14:21,301 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:21,302 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [768583812] [2020-09-25 12:14:21,302 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:21,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:25,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:25,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 12:14:25,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:25,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4132 [2020-09-25 12:14:25,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:25,445 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:14:25,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 12:14:25,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:25,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:25,461 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:25,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:25,463 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:25,463 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:25,463 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:25,463 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:25,463 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:25,464 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:25,464 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:25,464 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:25,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:14:25,469 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:25,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:25,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:25,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:28,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 12:14:28,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:28,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3307 [2020-09-25 12:14:28,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:28,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:28,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:28,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 12:14:28,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:28,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:28,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:28,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:28,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:14:28,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:28,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-09-25 12:14:28,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:28,885 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:14:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:28,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:14:28,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:28,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:28,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:28,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:28,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:14:28,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:28,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 12:14:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:28,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:28,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:14:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:28,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:28,982 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:14:28,982 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 12:14:28,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:28,982 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:28,983 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:14:28,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:29,009 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:14:29,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:29,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:29,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:29,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:14:29,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:29,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:14:29,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:29,020 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:29,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:29,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:29,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:29,088 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 12:14:29,088 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [768583812] [2020-09-25 12:14:29,088 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:29,088 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 12:14:29,089 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2096124321] [2020-09-25 12:14:29,089 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 12:14:29,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:29,090 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 12:14:29,090 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 12:14:29,090 INFO L87 Difference]: Start difference. First operand 49 states and 62 transitions. Second operand 15 states. [2020-09-25 12:14:29,480 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:29,481 INFO L93 Difference]: Finished difference Result 69 states and 90 transitions. [2020-09-25 12:14:29,481 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 12:14:29,481 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-09-25 12:14:29,482 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:29,483 INFO L225 Difference]: With dead ends: 69 [2020-09-25 12:14:29,483 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 12:14:29,484 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-09-25 12:14:29,485 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 12:14:29,491 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 57. [2020-09-25 12:14:29,491 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 12:14:29,492 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 78 transitions. [2020-09-25 12:14:29,493 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 78 transitions. Word has length 55 [2020-09-25 12:14:29,493 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:29,493 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 78 transitions. [2020-09-25 12:14:29,493 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 12:14:29,493 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 78 transitions. [2020-09-25 12:14:29,494 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-09-25 12:14:29,494 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:29,495 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:29,495 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:14:29,495 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:29,495 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:29,496 INFO L82 PathProgramCache]: Analyzing trace with hash 1523810089, now seen corresponding path program 5 times [2020-09-25 12:14:29,496 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:29,496 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [95611904] [2020-09-25 12:14:29,496 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:29,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:29,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:29,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:29,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:29,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:29,754 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:29,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:29,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:30,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:30,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:34,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 94 [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-25 12:14:34,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:34,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:34,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:34,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:34,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:34,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:34,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:34,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:34,528 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:34,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:34,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:34,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:34,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 12:14:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:34,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:34,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:35,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:35,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking...