/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.2 --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_20-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 11:07:29,643 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 11:07:29,648 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 11:07:29,694 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 11:07:29,695 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 11:07:29,705 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 11:07:29,708 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 11:07:29,711 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 11:07:29,714 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 11:07:29,716 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 11:07:29,717 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 11:07:29,719 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 11:07:29,720 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 11:07:29,723 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 11:07:29,725 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 11:07:29,727 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 11:07:29,728 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 11:07:29,729 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 11:07:29,731 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 11:07:29,737 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 11:07:29,740 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 11:07:29,741 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 11:07:29,742 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 11:07:29,742 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 11:07:29,747 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 11:07:29,747 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 11:07:29,747 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 11:07:29,750 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 11:07:29,750 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 11:07:29,752 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 11:07:29,752 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 11:07:29,753 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 11:07:29,753 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 11:07:29,754 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 11:07:29,757 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 11:07:29,757 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 11:07:29,758 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 11:07:29,758 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 11:07:29,758 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 11:07:29,759 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 11:07:29,760 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 11:07:29,761 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 11:07:29,786 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 11:07:29,786 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 11:07:29,787 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 11:07:29,788 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 11:07:29,788 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 11:07:29,788 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 11:07:29,788 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 11:07:29,788 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 11:07:29,789 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 11:07:29,789 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 11:07:29,789 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 11:07:29,789 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 11:07:29,790 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 11:07:29,790 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 11:07:29,790 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 11:07:29,790 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 11:07:29,790 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 11:07:29,790 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 11:07:29,791 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 11:07:29,791 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 11:07:29,791 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 11:07:29,791 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:29,792 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 11:07:29,792 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 11:07:29,792 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 11:07:29,792 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 11:07:29,792 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 11:07:29,793 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 11:07:29,793 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 11:07:29,793 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.2;log-additional-information=true; [2020-09-25 11:07:30,250 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 11:07:30,276 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 11:07:30,280 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 11:07:30,282 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 11:07:30,284 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 11:07:30,285 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 11:07:30,367 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08876ef21/0cd9df414f4f408f8090a2c21c66972e/FLAGc5a2cca13 [2020-09-25 11:07:30,881 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 11:07:30,882 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_20-1.c [2020-09-25 11:07:30,891 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08876ef21/0cd9df414f4f408f8090a2c21c66972e/FLAGc5a2cca13 [2020-09-25 11:07:31,215 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/08876ef21/0cd9df414f4f408f8090a2c21c66972e [2020-09-25 11:07:31,227 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 11:07:31,235 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 11:07:31,239 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:31,239 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 11:07:31,243 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 11:07:31,244 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,250 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10628d44 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31, skipping insertion in model container [2020-09-25 11:07:31,250 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,260 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 11:07:31,286 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 11:07:31,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:31,517 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 11:07:31,534 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 11:07:31,550 INFO L208 MainTranslator]: Completed translation [2020-09-25 11:07:31,550 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31 WrapperNode [2020-09-25 11:07:31,551 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 11:07:31,551 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 11:07:31,552 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 11:07:31,552 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 11:07:31,565 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,566 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,652 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,653 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,658 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,661 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,666 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... [2020-09-25 11:07:31,668 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 11:07:31,669 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 11:07:31,669 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 11:07:31,669 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 11:07:31,673 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 11:07:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 11:07:31,754 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 11:07:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 11:07:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 11:07:31,755 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 11:07:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 11:07:31,755 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 11:07:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 11:07:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 11:07:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 11:07:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 11:07:31,756 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 11:07:32,048 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 11:07:32,048 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 11:07:32,054 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:32 BoogieIcfgContainer [2020-09-25 11:07:32,055 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 11:07:32,071 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 11:07:32,072 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 11:07:32,077 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 11:07:32,078 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 11:07:31" (1/3) ... [2020-09-25 11:07:32,080 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e1c93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:32, skipping insertion in model container [2020-09-25 11:07:32,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 11:07:31" (2/3) ... [2020-09-25 11:07:32,081 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@65e1c93f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 11:07:32, skipping insertion in model container [2020-09-25 11:07:32,081 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 11:07:32" (3/3) ... [2020-09-25 11:07:32,083 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_20-1.c [2020-09-25 11:07:32,093 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 11:07:32,103 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 11:07:32,125 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 11:07:32,155 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 11:07:32,155 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 11:07:32,155 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 11:07:32,155 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 11:07:32,156 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 11:07:32,156 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 11:07:32,156 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 11:07:32,156 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 11:07:32,176 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 11:07:32,183 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 11:07:32,184 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:32,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:32,185 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:32,191 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:32,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 11:07:32,201 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:32,202 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [229468633] [2020-09-25 11:07:32,202 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:32,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:32,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:32,530 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 11:07:32,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:32,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 11:07:32,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:32,535 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:32,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 11:07:32,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:32,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 11:07:32,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:32,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:32,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:32,618 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:32,618 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:32,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:07:32,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:32,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:32,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:32,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:32,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:32,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:32,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:32,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,644 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:32,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:32,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:32,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:07:32,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:32,646 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:32,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 11:07:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:32,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 11:07:32,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:32,685 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:32,686 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [229468633] [2020-09-25 11:07:32,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:32,690 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:32,691 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464735529] [2020-09-25 11:07:32,698 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:32,699 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:32,716 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:32,718 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:32,720 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 11:07:32,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:32,815 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 11:07:32,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 11:07:32,818 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 11:07:32,818 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:32,832 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:32,832 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 11:07:32,836 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 [2020-09-25 11:07:32,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 11:07:32,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 11:07:32,891 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:32,894 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:32,895 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 11:07:32,896 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:32,896 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:32,896 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:32,896 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:32,898 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 11:07:32,898 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:32,898 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:07:32,899 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 11:07:32,899 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:32,899 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:32,900 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 11:07:32,900 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:32,900 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1340974253] [2020-09-25 11:07:32,900 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:32,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:32,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:32,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,051 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:33,052 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 11:07:33,052 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:33,052 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 11:07:33,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:33,053 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:33,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:33,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:33,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:33,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:33,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:33,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,074 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:33,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:33,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:33,075 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:33,075 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:33,075 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:33,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:33,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:33,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:33,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:33,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,110 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:33,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:33,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:33,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 11:07:33,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:33,112 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 11:07:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:33,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:33,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:33,146 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 11:07:33,147 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1340974253] [2020-09-25 11:07:33,147 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:33,147 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 11:07:33,148 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1493188604] [2020-09-25 11:07:33,150 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 11:07:33,150 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:33,150 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 11:07:33,150 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 11:07:33,151 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 11:07:33,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:33,224 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 11:07:33,225 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 11:07:33,225 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 11:07:33,226 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:33,227 INFO L225 Difference]: With dead ends: 50 [2020-09-25 11:07:33,227 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 11:07:33,229 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 11:07:33,229 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 11:07:33,237 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 11:07:33,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 11:07:33,239 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 11:07:33,239 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 11:07:33,240 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:33,240 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 11:07:33,240 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 11:07:33,240 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 11:07:33,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 11:07:33,242 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:33,243 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] [2020-09-25 11:07:33,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 11:07:33,243 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:33,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:33,244 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 11:07:33,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:33,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [607238583] [2020-09-25 11:07:33,245 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:33,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:33,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:33,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,238 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:35,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 11:07:35,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:35,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1980 [2020-09-25 11:07:35,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:35,240 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:35,240 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 11:07:35,240 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:35,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:35,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:35,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,257 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:35,257 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:35,258 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:35,258 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:35,258 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:35,258 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:35,258 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:35,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:35,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:35,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:35,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:35,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:35,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:35,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:35,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-25 11:07:35,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:35,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:35,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:35,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:35,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:35,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:35,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:35,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:35,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:35,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:35,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 11:07:35,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:35,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:35,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:35,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:35,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:35,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:35,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:35,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,532 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:35,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:35,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:35,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:35,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:35,533 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:35,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:35,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:35,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:35,575 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:35,576 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [607238583] [2020-09-25 11:07:35,576 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 11:07:35,576 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 11:07:35,577 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [968668157] [2020-09-25 11:07:35,577 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:35,578 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:35,578 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:35,578 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:35,578 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 11:07:35,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:35,747 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 11:07:35,747 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:35,747 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 11:07:35,748 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:35,749 INFO L225 Difference]: With dead ends: 58 [2020-09-25 11:07:35,750 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 11:07:35,750 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 11:07:35,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 11:07:35,759 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 11:07:35,759 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:35,761 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:35,761 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 11:07:35,762 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:35,762 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:35,762 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:35,762 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 11:07:35,764 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:35,764 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] [2020-09-25 11:07:35,765 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 11:07:35,765 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:35,765 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:35,765 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 11:07:35,766 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:35,766 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [747937407] [2020-09-25 11:07:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:35,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:35,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:35,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:36,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 11:07:37,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:07:37,391 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1616 [2020-09-25 11:07:37,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,392 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:37,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 11:07:37,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:37,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:37,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,410 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:37,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:37,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:37,417 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 11:07:37,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:37,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:07:37,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 11:07:37,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 462 [2020-09-25 11:07:37,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:37,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:07:37,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:37,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:37,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 11:07:37,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,940 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:37,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:37,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:07:37,978 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:37,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:37,990 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:37,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:37,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:37,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:37,991 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:37,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:37,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:37,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:37,999 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 11:07:38,000 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [747937407] [2020-09-25 11:07:38,000 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:38,001 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:38,001 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [886985895] [2020-09-25 11:07:38,002 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:38,003 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:38,007 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:38,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:38,009 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 11:07:38,153 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:38,153 INFO L93 Difference]: Finished difference Result 72 states and 89 transitions. [2020-09-25 11:07:38,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:38,154 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 11:07:38,154 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:38,158 INFO L225 Difference]: With dead ends: 72 [2020-09-25 11:07:38,158 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 11:07:38,159 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:38,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 11:07:38,174 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 52. [2020-09-25 11:07:38,174 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 11:07:38,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 64 transitions. [2020-09-25 11:07:38,180 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 64 transitions. Word has length 35 [2020-09-25 11:07:38,180 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:38,180 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 64 transitions. [2020-09-25 11:07:38,180 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:38,181 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 64 transitions. [2020-09-25 11:07:38,186 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 11:07:38,186 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:38,186 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] [2020-09-25 11:07:38,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 11:07:38,187 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:38,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:38,187 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 11:07:38,190 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:38,190 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1083425815] [2020-09-25 11:07:38,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:38,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:38,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:38,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:41,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:43,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 11:07:43,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:07:43,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:43,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:43,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:43,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:43,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 11:07:43,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:43,227 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:43,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:43,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:43,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:43,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:07:43,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:43,231 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:43,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:43,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:43,234 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:43,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:43,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:44,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:07:48,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 11:07:48,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:07:48,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,245 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:48,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 11:07:48,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:48,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:48,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 11:07:48,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,432 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:48,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:48,433 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:48,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,445 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:48,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:48,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,447 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:48,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:48,450 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 11:07:48,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:48,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:48,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:07:48,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:48,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:48,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:48,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:48,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:48,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:07:48,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:48,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 11:07:48,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:48,502 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:48,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:07:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:48,540 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 11:07:48,541 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1083425815] [2020-09-25 11:07:48,541 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:48,542 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 11:07:48,542 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930569966] [2020-09-25 11:07:48,543 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 11:07:48,543 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:48,544 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 11:07:48,544 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 11:07:48,544 INFO L87 Difference]: Start difference. First operand 52 states and 64 transitions. Second operand 7 states. [2020-09-25 11:07:48,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:48,716 INFO L93 Difference]: Finished difference Result 70 states and 84 transitions. [2020-09-25 11:07:48,717 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 11:07:48,717 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 11:07:48,718 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:48,719 INFO L225 Difference]: With dead ends: 70 [2020-09-25 11:07:48,720 INFO L226 Difference]: Without dead ends: 64 [2020-09-25 11:07:48,720 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:07:48,721 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-09-25 11:07:48,729 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 50. [2020-09-25 11:07:48,729 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 11:07:48,730 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 11:07:48,730 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 51 [2020-09-25 11:07:48,731 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:48,731 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 11:07:48,731 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 11:07:48,731 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 11:07:48,733 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 11:07:48,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:48,734 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 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, 1] [2020-09-25 11:07:48,734 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 11:07:48,734 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:48,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:48,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 11:07:48,735 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:48,735 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1819223831] [2020-09-25 11:07:48,736 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:48,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:48,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:49,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,744 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:53,744 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 11:07:53,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 11:07:53,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:07:53,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 11:07:53,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:53,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:07:53,757 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:53,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:07:53,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:53,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:07:53,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:53,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:07:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:53,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:07:53,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:53,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:07:53,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:53,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:54,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 11:07:58,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 11:07:58,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:07:58,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,770 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 11:07:58,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:07:58,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-25 11:07:58,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:58,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:58,916 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:07:58,916 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 11:07:58,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,917 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:07:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:58,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:07:58,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:07:58,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:58,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:58,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:07:58,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:58,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:58,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:58,961 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:58,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:58,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:58,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:58,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:58,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:58,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:07:58,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:58,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:58,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:07:58,971 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:07:59,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,097 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:07:59,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:07:59,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 11:07:59,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:07:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:07:59,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:07:59,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:07:59,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:59,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 11:07:59,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,207 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:59,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:59,208 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,211 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:07:59,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,223 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:07:59,224 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:07:59,224 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:07:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 11:07:59,224 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:07:59,224 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:07:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:07:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:07:59,225 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:07:59,225 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:07:59,237 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 13 proven. 19 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 11:07:59,237 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1819223831] [2020-09-25 11:07:59,238 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:07:59,239 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 11:07:59,239 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1082688330] [2020-09-25 11:07:59,240 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 11:07:59,240 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:07:59,240 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 11:07:59,241 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:07:59,241 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 11 states. [2020-09-25 11:07:59,694 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:07:59,694 INFO L93 Difference]: Finished difference Result 120 states and 168 transitions. [2020-09-25 11:07:59,695 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 11:07:59,695 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 67 [2020-09-25 11:07:59,695 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:07:59,696 INFO L225 Difference]: With dead ends: 120 [2020-09-25 11:07:59,698 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 11:07:59,702 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 11:07:59,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 11:07:59,718 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 61. [2020-09-25 11:07:59,718 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 11:07:59,723 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 72 transitions. [2020-09-25 11:07:59,723 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 72 transitions. Word has length 67 [2020-09-25 11:07:59,726 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:07:59,726 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 72 transitions. [2020-09-25 11:07:59,726 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 11:07:59,726 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 72 transitions. [2020-09-25 11:07:59,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 11:07:59,734 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:07:59,735 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 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] [2020-09-25 11:07:59,735 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 11:07:59,735 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:07:59,735 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:07:59,735 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 11:07:59,736 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:07:59,736 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [401218793] [2020-09-25 11:07:59,737 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:07:59,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:07:59,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:07:59,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:00,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:02,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:04,745 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:04,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 11:08:04,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:04,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 11:08:04,746 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:04,747 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 11:08:04,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:08:04,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:04,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:04,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:04,759 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:04,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:04,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:04,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:04,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:04,761 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:04,761 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:04,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:04,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:04,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:04,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:04,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:04,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:04,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:04,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:04,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:05,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,300 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:06,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:09,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 11:08:09,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-09-25 11:08:09,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 11:08:09,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:09,769 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 11:08:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:09,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 11:08:09,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:09,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:09,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:09,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:09,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:08:10,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:10,098 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 292 [2020-09-25 11:08:10,098 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,098 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 11:08:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 11:08:10,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:10,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:10,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:10,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-25 11:08:10,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:10,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:10,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:10,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:10,165 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,173 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,173 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:10,173 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 11:08:10,174 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,174 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:10,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 11:08:10,175 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:10,177 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 11:08:10,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 11:08:10,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 11:08:10,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-09-25 11:08:10,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,314 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 11:08:10,315 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:10,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:10,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:10,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 11:08:10,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:10,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:10,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 11:08:10,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:10,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:10,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:10,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 11:08:10,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:10,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:10,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:10,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:10,340 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-25 11:08:10,340 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [401218793] [2020-09-25 11:08:10,340 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:10,341 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 11:08:10,341 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2134568985] [2020-09-25 11:08:10,341 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 11:08:10,342 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:10,342 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 11:08:10,342 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 11:08:10,342 INFO L87 Difference]: Start difference. First operand 61 states and 72 transitions. Second operand 8 states. [2020-09-25 11:08:10,526 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:10,526 INFO L93 Difference]: Finished difference Result 117 states and 154 transitions. [2020-09-25 11:08:10,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:10,527 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 71 [2020-09-25 11:08:10,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:10,530 INFO L225 Difference]: With dead ends: 117 [2020-09-25 11:08:10,530 INFO L226 Difference]: Without dead ends: 111 [2020-09-25 11:08:10,531 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 11:08:10,533 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-09-25 11:08:10,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 91. [2020-09-25 11:08:10,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 91 states. [2020-09-25 11:08:10,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 121 transitions. [2020-09-25 11:08:10,550 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 121 transitions. Word has length 71 [2020-09-25 11:08:10,551 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:10,551 INFO L479 AbstractCegarLoop]: Abstraction has 91 states and 121 transitions. [2020-09-25 11:08:10,551 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 11:08:10,551 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 121 transitions. [2020-09-25 11:08:10,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2020-09-25 11:08:10,556 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:10,556 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 11:08:10,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 11:08:10,557 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:10,557 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:10,557 INFO L82 PathProgramCache]: Analyzing trace with hash 2103958142, now seen corresponding path program 1 times [2020-09-25 11:08:10,557 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:10,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1917731905] [2020-09-25 11:08:10,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:10,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:10,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,670 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:10,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:14,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:15,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 11:08:15,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:15,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:15,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:15,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:15,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-25 11:08:15,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:08:15,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:15,581 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 11:08:15,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:15,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,584 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:15,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 11:08:15,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:15,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 11:08:15,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:15,585 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:15,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:15,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:15,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 11:08:15,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:15,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:15,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:16,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:20,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-25 11:08:20,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 11:08:20,598 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 11:08:20,599 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:20,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:20,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:20,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:20,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:21,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 11:08:22,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 11:08:22,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2115 [2020-09-25 11:08:22,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,737 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 11:08:22,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 11:08:22,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:22,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,786 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:22,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 11:08:22,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 11:08:22,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:22,856 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:22,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,860 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,860 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:22,860 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:22,861 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,861 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:22,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:22,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:22,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:22,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:22,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 11:08:22,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,867 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 11:08:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 11:08:22,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:22,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:22,870 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:22,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 11:08:22,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:22,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 11:08:22,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:22,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:22,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 11:08:22,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:22,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-25 11:08:22,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:22,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:22,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:23,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:23,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 11:08:23,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 11:08:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1049 [2020-09-25 11:08:23,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:23,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 11:08:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 11:08:23,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 11:08:23,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:24,010 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:24,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 11:08:24,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 11:08:24,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 11:08:24,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,093 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 11:08:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 11:08:24,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:24,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 11:08:24,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:24,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:24,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:24,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:24,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:24,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 11:08:24,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,192 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:24,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:24,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:24,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:24,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:24,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:24,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 11:08:24,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.2 [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 11:08:24,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 11:08:24,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 11:08:24,219 INFO L134 CoverageAnalysis]: Checked inductivity of 141 backedges. 52 proven. 30 refuted. 0 times theorem prover too weak. 59 trivial. 0 not checked. [2020-09-25 11:08:24,220 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1917731905] [2020-09-25 11:08:24,220 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 11:08:24,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 11:08:24,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1878890359] [2020-09-25 11:08:24,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 11:08:24,221 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 11:08:24,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 11:08:24,222 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 11:08:24,222 INFO L87 Difference]: Start difference. First operand 91 states and 121 transitions. Second operand 10 states. [2020-09-25 11:08:24,519 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 11:08:24,519 INFO L93 Difference]: Finished difference Result 226 states and 359 transitions. [2020-09-25 11:08:24,524 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 11:08:24,524 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 102 [2020-09-25 11:08:24,525 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 11:08:24,529 INFO L225 Difference]: With dead ends: 226 [2020-09-25 11:08:24,529 INFO L226 Difference]: Without dead ends: 141 [2020-09-25 11:08:24,533 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-25 11:08:24,534 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2020-09-25 11:08:24,557 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 123. [2020-09-25 11:08:24,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 123 states. [2020-09-25 11:08:24,560 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 123 states to 123 states and 175 transitions. [2020-09-25 11:08:24,560 INFO L78 Accepts]: Start accepts. Automaton has 123 states and 175 transitions. Word has length 102 [2020-09-25 11:08:24,561 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 11:08:24,561 INFO L479 AbstractCegarLoop]: Abstraction has 123 states and 175 transitions. [2020-09-25 11:08:24,561 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 11:08:24,561 INFO L276 IsEmpty]: Start isEmpty. Operand 123 states and 175 transitions. [2020-09-25 11:08:24,563 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 11:08:24,563 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 11:08:24,563 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 2, 2, 2, 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] [2020-09-25 11:08:24,563 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 11:08:24,564 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 11:08:24,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 11:08:24,566 INFO L82 PathProgramCache]: Analyzing trace with hash -594280133, now seen corresponding path program 2 times [2020-09-25 11:08:24,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 11:08:24,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [997394641] [2020-09-25 11:08:24,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 11:08:24,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 11:08:24,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:24,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 11:08:26,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking...