/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 18:13:33,185 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 18:13:33,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 18:13:33,236 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 18:13:33,237 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 18:13:33,249 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 18:13:33,251 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 18:13:33,255 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 18:13:33,257 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 18:13:33,261 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 18:13:33,262 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 18:13:33,263 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 18:13:33,263 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 18:13:33,266 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 18:13:33,268 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 18:13:33,269 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 18:13:33,270 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 18:13:33,274 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 18:13:33,276 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 18:13:33,278 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 18:13:33,279 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 18:13:33,280 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 18:13:33,281 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 18:13:33,282 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 18:13:33,285 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 18:13:33,285 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 18:13:33,285 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 18:13:33,286 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 18:13:33,287 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 18:13:33,288 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 18:13:33,288 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 18:13:33,289 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 18:13:33,290 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 18:13:33,290 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 18:13:33,292 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 18:13:33,292 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 18:13:33,293 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 18:13:33,293 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 18:13:33,293 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 18:13:33,294 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 18:13:33,295 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 18:13:33,296 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 18:13:33,322 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 18:13:33,323 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 18:13:33,324 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 18:13:33,324 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 18:13:33,324 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 18:13:33,325 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 18:13:33,325 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 18:13:33,325 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 18:13:33,325 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 18:13:33,326 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 18:13:33,326 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 18:13:33,326 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 18:13:33,326 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 18:13:33,326 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 18:13:33,327 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 18:13:33,327 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 18:13:33,327 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 18:13:33,327 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 18:13:33,328 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 18:13:33,328 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 18:13:33,328 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 18:13:33,328 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:13:33,328 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 18:13:33,329 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 18:13:33,329 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 18:13:33,329 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 18:13:33,329 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 18:13:33,330 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 18:13:33,330 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 18:13:33,330 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLEST;log-additional-information=true; [2020-09-24 18:13:33,789 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 18:13:33,807 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 18:13:33,811 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 18:13:33,813 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 18:13:33,813 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 18:13:33,814 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-24 18:13:33,895 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3df3f69e/7a45ebfaa087432b912a476420ffafdf/FLAGfe64f06ae [2020-09-24 18:13:34,411 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 18:13:34,412 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_4-2.c [2020-09-24 18:13:34,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3df3f69e/7a45ebfaa087432b912a476420ffafdf/FLAGfe64f06ae [2020-09-24 18:13:34,752 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/c3df3f69e/7a45ebfaa087432b912a476420ffafdf [2020-09-24 18:13:34,765 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 18:13:34,771 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 18:13:34,772 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:34,772 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 18:13:34,776 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 18:13:34,778 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:34" (1/1) ... [2020-09-24 18:13:34,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:34, skipping insertion in model container [2020-09-24 18:13:34,782 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 06:13:34" (1/1) ... [2020-09-24 18:13:34,792 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 18:13:34,819 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 18:13:35,063 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:35,068 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 18:13:35,086 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 18:13:35,101 INFO L208 MainTranslator]: Completed translation [2020-09-24 18:13:35,102 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35 WrapperNode [2020-09-24 18:13:35,102 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 18:13:35,103 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 18:13:35,103 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 18:13:35,103 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 18:13:35,116 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,116 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,122 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,122 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,196 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,200 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,201 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... [2020-09-24 18:13:35,204 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 18:13:35,205 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 18:13:35,205 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 18:13:35,205 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 18:13:35,206 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 18:13:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 18:13:35,279 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 18:13:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 18:13:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 18:13:35,280 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 18:13:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 18:13:35,280 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 18:13:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 18:13:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 18:13:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 18:13:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 18:13:35,281 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 18:13:35,501 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 18:13:35,502 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 18:13:35,507 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:35 BoogieIcfgContainer [2020-09-24 18:13:35,507 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 18:13:35,509 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 18:13:35,509 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 18:13:35,513 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 18:13:35,513 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 06:13:34" (1/3) ... [2020-09-24 18:13:35,514 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:35, skipping insertion in model container [2020-09-24 18:13:35,514 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 06:13:35" (2/3) ... [2020-09-24 18:13:35,515 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c96f36e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 06:13:35, skipping insertion in model container [2020-09-24 18:13:35,515 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 06:13:35" (3/3) ... [2020-09-24 18:13:35,517 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_4-2.c [2020-09-24 18:13:35,529 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 18:13:35,540 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 18:13:35,565 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 18:13:35,607 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 18:13:35,607 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 18:13:35,607 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 18:13:35,608 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 18:13:35,608 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 18:13:35,608 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 18:13:35,608 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 18:13:35,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 18:13:35,635 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 18:13:35,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 18:13:35,644 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:35,646 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:35,646 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:35,654 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:35,654 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 18:13:35,667 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:35,667 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1932208191] [2020-09-24 18:13:35,668 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:35,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:35,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:35,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:35,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 18:13:35,986 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:35,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-24 18:13:35,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:35,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 18:13:35,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:35,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-09-24 18:13:36,060 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:36,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,070 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:36,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:13:36,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:36,072 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:36,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,079 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:36,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:36,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 18:13:36,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:13:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 18:13:36,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:36,158 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:13:36,159 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1932208191] [2020-09-24 18:13:36,161 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:36,162 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:36,163 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1717157823] [2020-09-24 18:13:36,169 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:36,169 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:36,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:36,188 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:36,190 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 18:13:36,284 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:36,286 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 18:13:36,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:36,288 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 18:13:36,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:36,305 INFO L225 Difference]: With dead ends: 58 [2020-09-24 18:13:36,305 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 18:13:36,314 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:36,337 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 18:13:36,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 18:13:36,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:36,393 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:36,395 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 18:13:36,397 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:36,397 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:36,397 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:36,398 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:36,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 18:13:36,400 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:36,401 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:36,401 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 18:13:36,401 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:36,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:36,402 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 18:13:36,402 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:36,402 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105747770] [2020-09-24 18:13:36,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:36,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 18:13:36,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:36,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-09-24 18:13:36,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:36,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 18:13:36,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:36,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 18:13:36,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:36,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,607 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,607 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:36,607 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,608 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:13:36,608 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:36,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,609 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:36,609 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:36,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:36,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,660 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:36,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:36,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:36,661 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-24 18:13:36,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 18:13:36,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:36,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:36,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:36,694 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 18:13:36,694 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105747770] [2020-09-24 18:13:36,695 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:36,695 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 18:13:36,695 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1749514268] [2020-09-24 18:13:36,697 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 18:13:36,697 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:36,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 18:13:36,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 18:13:36,698 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 18:13:36,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:36,739 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 18:13:36,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:36,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 18:13:36,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:36,742 INFO L225 Difference]: With dead ends: 50 [2020-09-24 18:13:36,742 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 18:13:36,743 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:36,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 18:13:36,751 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 18:13:36,751 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 18:13:36,752 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 18:13:36,753 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 18:13:36,753 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:36,753 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 18:13:36,753 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 18:13:36,754 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 18:13:36,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 18:13:36,755 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:36,756 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:36,756 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 18:13:36,756 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:36,756 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:36,757 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 18:13:36,757 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:36,757 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891309029] [2020-09-24 18:13:36,757 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:36,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:36,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:36,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:37,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 18:13:38,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:38,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1777 [2020-09-24 18:13:38,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:38,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 18:13:38,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:38,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-24 18:13:38,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:38,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:38,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 18:13:38,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:38,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:38,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:38,578 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:38,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:38,644 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 18:13:38,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:38,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:38,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:38,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:38,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:38,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:38,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:13:38,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:38,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:38,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:38,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:38,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:38,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:38,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:38,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:38,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:13:38,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:38,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:38,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:38,737 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:38,738 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891309029] [2020-09-24 18:13:38,738 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:38,738 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:38,739 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [280324297] [2020-09-24 18:13:38,741 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:38,741 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:38,742 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:38,743 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:38,743 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 6 states. [2020-09-24 18:13:38,831 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:38,832 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 18:13:38,832 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:38,832 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 18:13:38,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:38,834 INFO L225 Difference]: With dead ends: 82 [2020-09-24 18:13:38,834 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 18:13:38,836 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:38,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 18:13:38,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 18:13:38,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 18:13:38,844 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 18:13:38,845 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 18:13:38,845 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:38,845 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 18:13:38,846 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:38,846 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 18:13:38,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 18:13:38,848 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:38,848 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:38,848 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 18:13:38,849 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:38,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:38,849 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 18:13:38,849 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:38,850 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [427425515] [2020-09-24 18:13:38,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:38,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:38,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:38,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 18:13:39,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:39,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1016 [2020-09-24 18:13:39,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:39,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-24 18:13:39,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:39,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:39,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:39,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:39,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:39,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:39,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:39,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:39,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:39,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:39,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:39,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:39,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:39,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:40,184 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:40,184 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 264 [2020-09-24 18:13:40,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:40,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:40,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:40,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:40,211 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,225 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:40,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:40,225 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 18:13:40,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:40,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:40,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:40,231 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:40,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:40,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:40,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:40,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:13:40,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:40,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:40,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:40,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:40,270 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 18:13:40,270 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [427425515] [2020-09-24 18:13:40,271 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 18:13:40,271 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-24 18:13:40,271 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [591599387] [2020-09-24 18:13:40,273 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:40,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:40,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:40,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:40,276 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 7 states. [2020-09-24 18:13:40,391 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:40,392 INFO L93 Difference]: Finished difference Result 56 states and 64 transitions. [2020-09-24 18:13:40,393 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:40,393 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 18:13:40,393 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:40,395 INFO L225 Difference]: With dead ends: 56 [2020-09-24 18:13:40,395 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 18:13:40,396 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:40,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 18:13:40,409 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 48. [2020-09-24 18:13:40,409 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-24 18:13:40,410 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 55 transitions. [2020-09-24 18:13:40,410 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 55 transitions. Word has length 34 [2020-09-24 18:13:40,411 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:40,411 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 55 transitions. [2020-09-24 18:13:40,411 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:40,411 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 55 transitions. [2020-09-24 18:13:40,413 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 18:13:40,413 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:40,413 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:40,413 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 18:13:40,413 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:40,414 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:40,414 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 18:13:40,414 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:40,415 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1939997235] [2020-09-24 18:13:40,415 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:40,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:40,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:40,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:42,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 18:13:42,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 18:13:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1706 [2020-09-24 18:13:42,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:42,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:42,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 18:13:42,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:42,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:42,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:42,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:42,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:42,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:42,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:42,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:42,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:42,162 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:42,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 18:13:42,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:42,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:42,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:42,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 18:13:42,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:42,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 471 [2020-09-24 18:13:42,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:42,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:42,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:13:42,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-09-24 18:13:42,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:42,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:42,661 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:42,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:42,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:42,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:42,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 18:13:42,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:42,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:42,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:42,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:42,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:42,721 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:42,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:42,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:42,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 18:13:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-24 18:13:42,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:42,755 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:13:42,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:42,794 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 18:13:42,794 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1939997235] [2020-09-24 18:13:42,795 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:42,795 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:13:42,795 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947806626] [2020-09-24 18:13:42,795 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:42,796 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:42,796 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:42,796 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:42,796 INFO L87 Difference]: Start difference. First operand 48 states and 55 transitions. Second operand 7 states. [2020-09-24 18:13:42,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:42,916 INFO L93 Difference]: Finished difference Result 100 states and 126 transitions. [2020-09-24 18:13:42,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:42,917 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-24 18:13:42,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:42,918 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:42,919 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 18:13:42,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:42,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 18:13:42,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 52. [2020-09-24 18:13:42,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 18:13:42,930 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 18:13:42,930 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 18:13:42,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:42,931 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 18:13:42,931 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:42,931 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 18:13:42,933 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 18:13:42,933 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:42,933 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:42,934 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 18:13:42,934 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:42,934 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:42,934 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-24 18:13:42,935 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:42,935 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [43347883] [2020-09-24 18:13:42,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:42,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:42,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:42,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:43,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:46,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,945 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 18:13:47,945 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:13:47,945 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 18:13:47,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-24 18:13:47,946 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:47,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:47,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:47,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:47,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:47,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:47,960 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:47,960 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:47,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:47,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:47,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:47,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:47,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:47,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:47,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:47,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:13:49,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:49,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1288 [2020-09-24 18:13:49,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 18:13:49,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:49,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:49,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,309 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,309 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 18:13:49,310 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,310 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 18:13:49,310 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:49,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 18:13:49,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:49,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:49,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:49,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:49,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:13:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:49,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:13:49,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 18:13:49,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:49,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:49,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 18:13:49,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:49,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 18:13:49,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:49,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:49,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:49,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 18:13:49,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 18:13:49,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:49,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:49,381 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 5 proven. 7 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 18:13:49,382 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [43347883] [2020-09-24 18:13:49,382 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:49,382 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 18:13:49,382 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1340419420] [2020-09-24 18:13:49,383 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 18:13:49,383 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:49,383 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 18:13:49,384 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 18:13:49,384 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 6 states. [2020-09-24 18:13:49,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:49,469 INFO L93 Difference]: Finished difference Result 100 states and 125 transitions. [2020-09-24 18:13:49,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 18:13:49,470 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 51 [2020-09-24 18:13:49,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:49,471 INFO L225 Difference]: With dead ends: 100 [2020-09-24 18:13:49,472 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 18:13:49,473 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:49,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 18:13:49,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 18:13:49,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:49,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:49,482 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 51 [2020-09-24 18:13:49,482 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:49,483 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:49,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 18:13:49,483 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:49,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 18:13:49,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:49,485 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:49,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 18:13:49,486 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:49,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:49,487 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 18:13:49,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:49,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [261756561] [2020-09-24 18:13:49,488 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:49,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:49,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:49,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:50,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 18:13:54,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:13:54,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 18:13:54,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:54,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 18:13:54,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 18:13:54,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:13:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:54,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:13:54,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:54,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:13:54,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:54,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:54,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:54,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:13:54,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:54,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:54,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:56,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:13:56,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:13:56,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1647 [2020-09-24 18:13:56,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:56,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:13:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:13:56,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 18:13:56,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:13:56,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:56,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:56,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:56,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:13:56,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:56,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-24 18:13:56,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:13:56,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:56,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:13:56,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:56,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:13:56,236 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:56,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:56,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:56,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:56,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:56,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:56,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:56,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:56,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:56,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:13:56,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:56,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:56,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:13:56,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:56,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:13:56,254 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:13:56,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:56,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:13:56,255 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:56,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:13:56,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:56,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:13:56,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:13:56,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:13:56,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 18:13:56,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:13:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:13:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:13:56,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:13:56,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 18:13:56,314 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 3 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-24 18:13:56,315 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [261756561] [2020-09-24 18:13:56,315 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:13:56,315 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 18:13:56,316 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1029441478] [2020-09-24 18:13:56,317 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 18:13:56,317 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:13:56,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 18:13:56,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-24 18:13:56,318 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 7 states. [2020-09-24 18:13:56,507 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:13:56,508 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2020-09-24 18:13:56,508 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:13:56,509 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 18:13:56,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:13:56,510 INFO L225 Difference]: With dead ends: 72 [2020-09-24 18:13:56,511 INFO L226 Difference]: Without dead ends: 66 [2020-09-24 18:13:56,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:13:56,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-24 18:13:56,519 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-24 18:13:56,520 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 18:13:56,521 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 18:13:56,521 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 52 [2020-09-24 18:13:56,521 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:13:56,521 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 18:13:56,521 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 18:13:56,522 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 18:13:56,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 18:13:56,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:13:56,525 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:13:56,525 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 18:13:56,525 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:13:56,526 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:13:56,526 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-24 18:13:56,526 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:13:56,526 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [896408566] [2020-09-24 18:13:56,527 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:13:56,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:13:56,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:56,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:57,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:58,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:13:59,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 18:14:01,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 18:14:01,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 18:14:01,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 18:14:01,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:14:01,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:01,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:01,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:01,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:01,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:01,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:01,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:01,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:01,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:01,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:01,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:01,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:02,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:04,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:06,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:14:06,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 18:14:06,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:14:06,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 18:14:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:06,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-24 18:14:06,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:06,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:06,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:06,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:06,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:06,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:06,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:06,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-24 18:14:06,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 18:14:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:06,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:06,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:06,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:06,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:06,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:07,012 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:07,012 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 18:14:07,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:07,013 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 18:14:07,013 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:07,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:07,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:07,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:14:07,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:07,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:07,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:07,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:07,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:07,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:07,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-09-24 18:14:07,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:07,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:07,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 18:14:07,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:07,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,240 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,240 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:07,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:07,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:14:07,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:07,241 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:07,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,255 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:07,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:07,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:07,256 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:14:07,256 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:07,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:07,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:07,282 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 12 proven. 20 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-24 18:14:07,282 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [896408566] [2020-09-24 18:14:07,282 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:07,282 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 18:14:07,283 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1849793299] [2020-09-24 18:14:07,283 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 18:14:07,284 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:07,284 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 18:14:07,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 18:14:07,284 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 9 states. [2020-09-24 18:14:07,492 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:07,493 INFO L93 Difference]: Finished difference Result 120 states and 159 transitions. [2020-09-24 18:14:07,493 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 18:14:07,493 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-24 18:14:07,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:07,495 INFO L225 Difference]: With dead ends: 120 [2020-09-24 18:14:07,495 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 18:14:07,496 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-24 18:14:07,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 18:14:07,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 72. [2020-09-24 18:14:07,505 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 18:14:07,506 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 88 transitions. [2020-09-24 18:14:07,506 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 88 transitions. Word has length 69 [2020-09-24 18:14:07,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:07,507 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 88 transitions. [2020-09-24 18:14:07,507 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 18:14:07,507 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 88 transitions. [2020-09-24 18:14:07,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 122 [2020-09-24 18:14:07,509 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:07,509 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 5, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:07,509 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 18:14:07,510 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:07,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:07,510 INFO L82 PathProgramCache]: Analyzing trace with hash -271039366, now seen corresponding path program 1 times [2020-09-24 18:14:07,510 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:07,511 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1602227381] [2020-09-24 18:14:07,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:07,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:07,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:07,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:08,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:10,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:10,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:10,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:11,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 154 [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:12,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:12,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 18:14:12,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:12,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 18:14:12,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:12,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:12,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:12,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:12,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:12,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:12,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 18:14:12,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:12,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:12,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:13,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:14,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:17,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 140 [2020-09-24 18:14:17,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 18:14:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-24 18:14:17,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 18:14:17,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:17,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:17,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:17,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:17,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:17,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:18,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 18:14:18,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 18:14:18,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 957 [2020-09-24 18:14:18,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 18:14:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 18:14:18,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 18:14:18,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:18,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:18,545 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:18,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:18,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:18,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 18:14:18,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-09-24 18:14:18,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 18:14:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:18,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 18:14:18,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:18,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:18,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:18,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:18,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:18,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:18,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 18:14:18,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:18,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 18:14:18,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:18,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:18,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:18,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:18,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:18,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:18,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 18:14:18,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:18,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 18:14:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:18,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:18,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:18,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:18,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:18,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:18,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:18,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:18,799 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 18:14:18,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 18:14:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 18:14:18,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 18:14:18,800 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:18,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 18:14:18,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:18,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:18,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:22,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 18:14:23,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 18:14:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 18:14:23,824 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 73 [2020-09-24 18:14:23,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:23,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 18:14:23,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 18:14:23,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:23,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 18:14:23,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 18:14:23,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,863 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 18:14:23,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:23,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:23,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 18:14:23,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:23,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 18:14:23,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,875 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,876 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 18:14:23,878 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 18:14:23,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:23,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 18:14:23,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 18:14:23,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 18:14:23,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 18:14:23,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 18:14:23,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 18:14:23,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 18:14:23,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLEST [2020-09-24 18:14:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 18:14:23,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 18:14:23,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 18:14:23,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 18:14:23,906 INFO L134 CoverageAnalysis]: Checked inductivity of 206 backedges. 31 proven. 57 refuted. 0 times theorem prover too weak. 118 trivial. 0 not checked. [2020-09-24 18:14:23,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1602227381] [2020-09-24 18:14:23,907 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 18:14:23,907 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 18:14:23,907 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185860004] [2020-09-24 18:14:23,908 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 18:14:23,908 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 18:14:23,908 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 18:14:23,909 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-24 18:14:23,909 INFO L87 Difference]: Start difference. First operand 72 states and 88 transitions. Second operand 8 states. [2020-09-24 18:14:24,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 18:14:24,042 INFO L93 Difference]: Finished difference Result 144 states and 189 transitions. [2020-09-24 18:14:24,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 18:14:24,042 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 121 [2020-09-24 18:14:24,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 18:14:24,044 INFO L225 Difference]: With dead ends: 144 [2020-09-24 18:14:24,044 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 18:14:24,045 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-09-24 18:14:24,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 18:14:24,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 72. [2020-09-24 18:14:24,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-09-24 18:14:24,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 87 transitions. [2020-09-24 18:14:24,054 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 87 transitions. Word has length 121 [2020-09-24 18:14:24,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 18:14:24,054 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 87 transitions. [2020-09-24 18:14:24,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 18:14:24,054 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 87 transitions. [2020-09-24 18:14:24,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 18:14:24,056 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 18:14:24,056 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 18:14:24,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 18:14:24,056 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 18:14:24,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 18:14:24,057 INFO L82 PathProgramCache]: Analyzing trace with hash 1951493560, now seen corresponding path program 2 times [2020-09-24 18:14:24,057 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 18:14:24,057 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [750059404] [2020-09-24 18:14:24,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 18:14:24,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-24 18:14:24,070 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-24 18:14:24,070 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-24 18:14:24,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 18:14:24,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 24.09 06:14:24 BoogieIcfgContainer [2020-09-24 18:14:24,103 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-24 18:14:24,107 INFO L168 Benchmark]: Toolchain (without parser) took 49338.76 ms. Allocated memory was 141.0 MB in the beginning and 407.4 MB in the end (delta: 266.3 MB). Free memory was 103.1 MB in the beginning and 101.3 MB in the end (delta: 1.8 MB). Peak memory consumption was 268.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:14:24,107 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-24 18:14:24,108 INFO L168 Benchmark]: CACSL2BoogieTranslator took 330.22 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. [2020-09-24 18:14:24,109 INFO L168 Benchmark]: Boogie Preprocessor took 101.85 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.8 MB in the beginning and 182.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. [2020-09-24 18:14:24,110 INFO L168 Benchmark]: RCFGBuilder took 302.78 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 168.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. [2020-09-24 18:14:24,111 INFO L168 Benchmark]: TraceAbstraction took 48594.40 ms. Allocated memory was 203.4 MB in the beginning and 407.4 MB in the end (delta: 203.9 MB). Free memory was 167.4 MB in the beginning and 101.3 MB in the end (delta: 66.1 MB). Peak memory consumption was 270.1 MB. Max. memory is 7.1 GB. [2020-09-24 18:14:24,114 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 141.0 MB. Free memory was 121.3 MB in the beginning and 121.1 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 330.22 ms. Allocated memory is still 141.0 MB. Free memory was 102.5 MB in the beginning and 93.0 MB in the end (delta: 9.4 MB). Peak memory consumption was 9.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 101.85 ms. Allocated memory was 141.0 MB in the beginning and 203.4 MB in the end (delta: 62.4 MB). Free memory was 92.8 MB in the beginning and 182.2 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.0 MB. Max. memory is 7.1 GB. * RCFGBuilder took 302.78 ms. Allocated memory is still 203.4 MB. Free memory was 182.2 MB in the beginning and 168.0 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 48594.40 ms. Allocated memory was 203.4 MB in the beginning and 407.4 MB in the end (delta: 203.9 MB). Free memory was 167.4 MB in the beginning and 101.3 MB in the end (delta: 66.1 MB). Peak memory consumption was 270.1 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 4; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 3 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 45 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 48.4s, OverallIterations: 10, TraceHistogramMax: 7, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 387 SDtfs, 211 SDslu, 1292 SDs, 0 SdLazy, 537 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 176 GetRequests, 116 SyntacticMatches, 1 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 26 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=72occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 30 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 46.7s InterpolantComputationTime, 515 NumberOfCodeBlocks, 515 NumberOfCodeBlocksAsserted, 10 NumberOfCheckSat, 419 ConstructedInterpolants, 0 QuantifiedInterpolants, 49901 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 3 PerfectInterpolantSequences, 219/314 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...